Alert archive / Montana / Winter Storm Warnings in 2017

Winter Storm Warning 11, NWS Great Falls, MT

November 1, 2017

NWS Great Falls, MT issued this winter storm warning at Nov 1, 2017, 2:45 PM MDT. It took effect at Nov 2, 2017, 3:46 AM MDT. It was in force for 62 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Nov 1, 2017, 2:45 PM MDT (20:45 UTC)
In effect from
Nov 2, 2017, 3:46 AM MDT
Expired
Nov 4, 2017, 6:00 PM MDT
In force
62 hr
Issued by
NWS Great Falls, MT

The text

As transmitted.

440 
WWUS45 KTFX 012045
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
245 PM MDT Wed Nov 1 2017

MTZ009-048-020300-
/O.NEW.KTFX.WS.W.0011.171102T1200Z-171103T1800Z/
/O.CON.KTFX.WS.W.0010.000000T0000Z-171102T0300Z/
/O.CON.KTFX.WW.Y.0039.000000T0000Z-171102T0300Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
245 PM MDT Wed Nov 1 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM 6 AM THURSDAY TO NOON MDT
FRIDAY...

* WHAT...Heavy snow occurring above 5000 feet. Plan on difficult
  travel conditions, including during the evening commute.
  Additional snow accumulations of 1 to 3 inches are expected
  through the rest of this afternoon. Snow will redevelop Thursday
  with new accumulations of 6 to 12 inches expected Thursday and 
  Friday. 

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...For the Winter Storm Warning and Winter Weather Advisory
  until 9 PM today. Another Winter Storm Warning begins at 6 AM
  Thursday and continues through noon Friday. 

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ012-014-050-052>055-020300-
/O.CON.KTFX.WS.W.0010.000000T0000Z-171102T0300Z/
/O.CON.KTFX.WW.Y.0039.000000T0000Z-171102T0300Z/
Cascade-Central and Southern Lewis and Clark-Judith Basin-
Jefferson-Broadwater-Meagher-Gallatin-
Including the following locations Great Falls, Cascade, Belt, 
Kings Hill Pass, Helena, Lincoln, MacDonald Pass, Rogers Pass, 
Raynesford, Stanford, Hobson, Montana City, Boulder, 
Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, 
Townsend, Martinsdale, White Sulphur Springs, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
245 PM MDT Wed Nov 1 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* WHAT...Heavy snow occurring above 5000 feet. Snow occurring.
  Plan on difficult travel conditions, including during the
  evening commute. Additional snow accumulations of 1 to 3 inches
  are expected.

* WHERE...Portions of central Montana, southwest Montana and 
  west central Montana.

* WHEN...For the Winter Storm Warning, until 9 PM today. For the 
  Winter Weather Advisory, until 9 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ010-013-044-046-049-051-020300-
/O.CON.KTFX.WW.Y.0039.000000T0000Z-171102T0300Z/
Eastern Glacier-Chouteau-Toole-Eastern Pondera-Eastern Teton-
Fergus-
Including the following locations Cut Bank, Fort Benton, Carter, 
Big Sandy, Shelby, Sunburst, Brady, Conrad, Fairfield, Dutton, 
Lewistown, Winifred, Lewistown Divide, and Grass Range
245 PM MDT Wed Nov 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* WHAT...Snow occurring. Plan on slippery road conditions, 
  including during the evening commute. Additional snow 
  accumulations of up to one inch are expected.

* WHERE...Portions of central Montana and north central Montana.

* WHEN...Until 9 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

http://www.weather.gov/greatfalls
12 follow-up statements
225 
WWUS45 KTFX 020243
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
843 PM MDT Wed Nov 1 2017

MTZ009-048-021745-
/O.EXP.KTFX.WS.W.0010.000000T0000Z-171102T0300Z/
/O.EXP.KTFX.WW.Y.0039.000000T0000Z-171102T0300Z/
/O.CON.KTFX.WS.W.0011.171102T1200Z-171103T1800Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
843 PM MDT Wed Nov 1 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THURSDAY TO
NOON MDT FRIDAY...
...WINTER STORM WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING
ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 PM MDT THIS EVENING...

* WHAT...Heavy snow expected. Snow will redevelop Thursday with
  new accumulations of 6 to 12 inches expected Thursday and
  Friday.

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...6 AM Thursday to noon Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ012-014-050-052>055-020345-
/O.EXP.KTFX.WS.W.0010.000000T0000Z-171102T0300Z/
/O.EXP.KTFX.WW.Y.0039.000000T0000Z-171102T0300Z/
Cascade-Central and Southern Lewis and Clark-Judith Basin-
Jefferson-Broadwater-Meagher-Gallatin-
Including the following locations Great Falls, Cascade, Belt, 
Kings Hill Pass, Helena, Lincoln, MacDonald Pass, Rogers Pass, 
Raynesford, Stanford, Hobson, Montana City, Boulder, 
Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, 
Townsend, Martinsdale, White Sulphur Springs, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
843 PM MDT Wed Nov 1 2017

...WINTER STORM WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING
ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 PM MDT THIS EVENING...

Areas of light snow will persist overnight, with new accumulations
of up to one inch possible at higher elevations. Roads remain icy
as temperatures drop and daytime snowmelt freezes. Drivers should
exercise caution.

$$

MTZ010-013-044-046-049-051-020345-
/O.EXP.KTFX.WW.Y.0039.000000T0000Z-171102T0300Z/
Eastern Glacier-Chouteau-Toole-Eastern Pondera-Eastern Teton-
Fergus-
Including the following locations Cut Bank, Fort Benton, Carter, 
Big Sandy, Shelby, Sunburst, Brady, Conrad, Fairfield, Dutton, 
Lewistown, Winifred, Lewistown Divide, and Grass Range
843 PM MDT Wed Nov 1 2017

...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 PM MDT THIS EVENING...

Areas of light snow may continue overnight with up to one- 
quarter inch of new snow possible. Roads remain icy as 
temperatures drop and daytime snowmelt freezes. Drivers should 
exercise caution.

$$

http://www.weather.gov/greatfalls
337 
WWUS45 KTFX 020946
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
346 AM MDT Thu Nov 2 2017

MTZ009-048-022200-
/O.EXT.KTFX.WS.W.0011.171102T0946Z-171104T1200Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
346 AM MDT Thu Nov 2 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 AM MDT SATURDAY...

* WHAT...Heavy snow expected. Travel will be very difficult to
  impossible, especially across mountain passes. Additional snow
  accumulations of 6 to 8 inches today, with another 6 to 10
  inches on Friday through early Saturday. Total snow 
  accumulation of 1 to 2 feet possible today through Saturday.

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...Periods of light to moderate snow expected today into 
  Saturday morning. Some brief heavy snow is also possible at 
  times.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Those with outdoor interests should prepare
  for continued winter conditions or delay outdoor plans.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ010-046-049-022200-
/O.NEW.KTFX.WW.Y.0040.171102T0946Z-171104T1200Z/
Eastern Glacier-Eastern Pondera-Eastern Teton-
Including the following locations Cut Bank, Brady, Conrad, 
Fairfield, and Dutton
346 AM MDT Thu Nov 2 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT SATURDAY...

* WHAT...Periods of light to moderate snow expected. Plan on
  difficult travel conditions. Additional snow accumulations of 1
  to 4 inches today, with 4 to 6 inches possible Friday into
  Saturday morning, are expected. Total snow accumulations today
  through Friday night of 4 to 10 inches is expected. 

* WHERE...Eastern Glacier, Eastern Pondera and Eastern Teton.

* WHEN...Periods of light to moderate snow expected today through
  early Saturday morning.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times. Those with outdoor plans should prepare for the continued
  return of winter weather.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ008-015-055-022200-
/O.NEW.KTFX.WS.A.0012.171103T0900Z-171105T0000Z/
Beaverhead-Madison-Gallatin-
Including the following locations Big Hole Pass, Wisdom, Dillon, 
Chief Joseph Pass, Monida Pass, Wise River, Ennis, Norris Hill, 
Raynolds Pass, Twin Bridges, Virginia City, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
346 AM MDT Thu Nov 2 2017

...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY AFTERNOON...

* WHAT...Moderate to heavy snow possible. Plan on difficult travel
  conditions, especially at pass level. Total snow accumulations
  of 2 to 8 inches across the lower elevations, and 1 to near 2
  feet possible across the mountains.

* WHERE...Beaverhead, Madison and Gallatin.

* WHEN...An initial band of snow or wintry mix is possible late
  tonight into Friday morning. After a brief lull in precipitation 
  Friday afternoon...widespread moderate to heavy snow is possible
  through Saturday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility are
  possible. Those with outdoor plans should prepare on the
  continue return of winter weather, and be mindful of increased
  avalanche danger. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

MTZ011>014-044-045-047-050>054-022200-
/O.NEW.KTFX.WS.A.0012.171103T1200Z-171104T1800Z/
Hill-Cascade-Chouteau-Central and Southern Lewis and Clark-Toole-
Liberty-Blaine-Judith Basin-Fergus-Jefferson-Broadwater-Meagher-
Including the following locations Havre, Rocky Boy, Rudyard, 
Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter,
Big Sandy, Helena, Lincoln, MacDonald Pass, Rogers Pass, Shelby, 
Sunburst, Chester, Whitlash, Chinook, Harlem, Hays, Raynesford, 
Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, 
Grass Range, Montana City, Boulder, Boulder Hill, Elk Park Pass, 
Homestake Pass, Whitehall, Toston, Townsend, Martinsdale, 
and White Sulphur Springs
346 AM MDT Thu Nov 2 2017

...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH
SATURDAY MORNING...

* WHAT...Moderate to heavy snow possible. Plan on difficult travel
  conditions. Total snow accumulations of 4 to 8 inches, with
  higher elevation amounts up to 12 inches, are possible.

* WHERE...Portions of central Montana, north central Montana, 
  southwest Montana and west central Montana.

* WHEN...From Friday morning through Saturday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are
  possible. Those with outdoor plans should prepare for the
  continued return of winter weather. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

http://www.weather.gov/greatfalls
381 
WWUS45 KTFX 022059
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
259 PM MDT Thu Nov 2 2017

MTZ015-055-031200-
/O.UPG.KTFX.WS.A.0012.171103T0900Z-171105T0000Z/
/O.EXB.KTFX.WS.W.0011.171103T0600Z-171105T0000Z/
/O.EXB.KTFX.WW.Y.0040.171103T0600Z-171105T0000Z/
Madison-Gallatin-
Including the following locations Ennis, Norris Hill, 
Raynolds Pass, Twin Bridges, Virginia City, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
259 PM MDT Thu Nov 2 2017

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM
MDT SATURDAY ABOVE 6000 FEET...
...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM MDT SATURDAY BELOW 6000 FEET...

* WHAT...Heavy snow expected above 6000 feet. Periods of snow
  expected below 6000 feet. Travel will become very difficult
  across mountain passes. Above 6000 feet, total snow
  accumulations of 8 to 15 inches, with localized amounts up to 20
  inches are expected. Below 6000 feet, total snow accumulations
  of 3 to 7 inches are expected.

* WHERE...Madison and Gallatin.

* WHEN...Midnight tonight to 6 PM Saturday. The initial round of
  snow tonight may mix with rain at lower elevations. A lull in
  the precipitation is likely for a period Friday morning before
  increasing again Friday afternoon with temperatures turning
  colder. 

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ009-048-031200-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171104T1200Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
259 PM MDT Thu Nov 2 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Heavy snow occurring. Travel will be very difficult to
  impossible, especially over mountain passes. Additional snow
  accumulations of 6 to 12 inches are expected.

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ011>014-044-045-047-050>054-031200-
/O.UPG.KTFX.WS.A.0012.171103T1200Z-171104T1800Z/
/O.EXB.KTFX.WW.Y.0040.171103T1200Z-171104T1800Z/
Hill-Cascade-Chouteau-Central and Southern Lewis and Clark-Toole-
Liberty-Blaine-Judith Basin-Fergus-Jefferson-Broadwater-Meagher-
Including the following locations Havre, Rocky Boy, Rudyard, 
Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter,
Big Sandy, Helena, Lincoln, MacDonald Pass, Rogers Pass, Shelby, 
Sunburst, Chester, Whitlash, Chinook, Harlem, Hays, Raynesford, 
Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, 
Grass Range, Montana City, Boulder, Boulder Hill, Elk Park Pass, 
Homestake Pass, Whitehall, Toston, Townsend, Martinsdale, 
and White Sulphur Springs
259 PM MDT Thu Nov 2 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM FRIDAY TO NOON MDT
SATURDAY...

* WHAT...Snow expected. Plan on difficult travel conditions. Total
  snow accumulations of 3 to 6 inches are expected with up to 10
  inches possible in the mountains.

* WHERE...Portions of central Montana, north central Montana, 
  southwest Montana and west central Montana.

* WHEN...6 AM Friday to noon Saturday. Periods of snow will be
  moderate at times Friday afternoon and evening. 

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ008-031200-
/O.UPG.KTFX.WS.A.0012.171103T0900Z-171105T0000Z/
/O.EXB.KTFX.WW.Y.0040.171103T0600Z-171105T0000Z/
Beaverhead-
Including the following locations Big Hole Pass, Wisdom, Dillon, 
Chief Joseph Pass, Monida Pass, and Wise River
259 PM MDT Thu Nov 2 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM MDT SATURDAY...

* WHAT...Snow expected. Plan on difficult travel conditions,
  including during the morning commute on Friday. Total snow
  accumulations of 4 to 8 inches are expected.

* WHERE...Beaverhead.

* WHEN...Midnight to 6 PM Saturday. The initial round of
  snow tonight may mix with rain at lower elevations. A lull in
  the precipitation is likely for a period Friday morning before
  increasing again Friday afternoon with temperatures turning
  colder. 

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ010-046-049-031200-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Eastern Glacier-Eastern Pondera-Eastern Teton-
Including the following locations Cut Bank, Brady, Conrad, 
Fairfield, and Dutton
259 PM MDT Thu Nov 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Snow occurring. Plan on difficult travel conditions,
  including during the morning commute on Friday. Additional snow
  accumulations of 3 to 6 inches are expected.

* WHERE...Eastern Glacier, Eastern Pondera and Eastern Teton.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

http://www.weather.gov/greatfalls
630 
WWUS45 KTFX 030226
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
826 PM MDT Thu Nov 2 2017

MTZ015-055-031200-
/O.CON.KTFX.WS.W.0011.171103T0600Z-171105T0000Z/
/O.CON.KTFX.WW.Y.0040.171103T0600Z-171105T0000Z/
Madison-Gallatin-
Including the following locations Ennis, Norris Hill, 
Raynolds Pass, Twin Bridges, Virginia City, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
826 PM MDT Thu Nov 2 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM MDT SATURDAY ABOVE 6000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 6 PM MDT SATURDAY BELOW 6000 FEET...

* WHAT...Heavy snow expected above 6000 feet. Snow expected below
  6000 feet. Travel will be very difficult to impossible. Above
  6000 feet, total snow accumulations of 9 to 15 inches, with
  localized amounts up to 18 inches. Below 6000 feet, total snow
  accumulations of 3 to 8 inches, with localized amounts up to 11
  inches, are expected.

* WHERE...Madison and Gallatin.

* WHEN...Midnight tonight to 6 pm Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ009-048-031200-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171104T1200Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
826 PM MDT Thu Nov 2 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Heavy snow occurring. Travel will be very difficult to
  impossible, including during the morning commute on Friday.
  Additional snow accumulations of 6 to 12 inches are expected.

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ010-046-049-031200-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Eastern Glacier-Eastern Pondera-Eastern Teton-
Including the following locations Cut Bank, Brady, Conrad, 
Fairfield, and Dutton
826 PM MDT Thu Nov 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Snow and blowing snow occurring. Plan on slippery road 
  conditions, including during the morning commute on Friday. In 
  addition, some reductions to visibility are expected. 
  Additional snow accumulations of 3 to 5 inches, with localized 
  amounts up to 7 inches, are expected.

* WHERE...Eastern Glacier, Eastern Pondera and Eastern Teton.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will 
  cause patchy blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

$$

MTZ011>014-044-045-047-050>054-031200-
/O.CON.KTFX.WW.Y.0040.171103T1200Z-171104T1800Z/
Hill-Cascade-Chouteau-Central and Southern Lewis and Clark-Toole-
Liberty-Blaine-Judith Basin-Fergus-Jefferson-Broadwater-Meagher-
Including the following locations Havre, Rocky Boy, Rudyard, 
Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter,
Big Sandy, Helena, Lincoln, MacDonald Pass, Rogers Pass, Shelby, 
Sunburst, Chester, Whitlash, Chinook, Harlem, Hays, Raynesford, 
Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, 
Grass Range, Montana City, Boulder, Boulder Hill, Elk Park Pass, 
Homestake Pass, Whitehall, Toston, Townsend, Martinsdale, 
and White Sulphur Springs
826 PM MDT Thu Nov 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO
NOON MDT SATURDAY...

* WHAT...Snow expected. Plan on slippery road conditions. Total
  snow accumulations of 3 to 5 inches, with localized amounts up
  to 10 inches in the mountains, are expected.

* WHERE...Portions of central Montana, north central Montana, 
  southwest Montana and west central Montana.

* WHEN...6 AM Friday to noon Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ008-031200-
/O.CON.KTFX.WW.Y.0040.171103T0600Z-171105T0000Z/
Beaverhead-
Including the following locations Big Hole Pass, Wisdom, Dillon, 
Chief Joseph Pass, Monida Pass, and Wise River
826 PM MDT Thu Nov 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 6 PM MDT SATURDAY...

* WHAT...Snow expected. Travel will be difficult, including during
  the morning commute on Friday. Total snow accumulations of 2 to
  4 inches are expected below 6000-feet elevation, with totals of
  6 to 10 inches expected above 6000-ft elevation.

* WHERE...Beaverhead.

* WHEN...Midnight to 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

http://www.weather.gov/greatfalls
880 
WWUS45 KTFX 030643
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1243 AM MDT Fri Nov 3 2017

MTZ015-055-031300-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171105T0000Z/
Madison-Gallatin-
Including the following locations Ennis, Norris Hill, 
Raynolds Pass, Twin Bridges, Virginia City, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
1243 AM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT
UNTIL 6 PM MDT SATURDAY ABOVE 6000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT
UNTIL 6 PM MDT SATURDAY BELOW 6000 FEET...

* WHAT...Periods of snow, heavy at times occurring through 6 PM
  Saturday. Total snow accumulations of 3 to 7 inches below 6000
  feet and 8 to 15 inches above 6000 feet. Isolated amounts near
  18 inches at ridge tops.

* WHERE...Madison and Gallatin counties.

* WHEN...Until 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. The snowfall will let up in intensity
  during the morning, but intensify by late this afternoon. 
  Snowfall rates near 1 inch per hour are possible this evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ009-048-031300-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171104T1200Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
1243 AM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT
UNTIL 6 AM MDT SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions, including during the morning commute. Additional
  snow accumulations of 3 to 6 inches, with isolated amounts up to
  9 inches near ridge tops.

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ010-046-049-031300-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Eastern Glacier-Eastern Pondera-Eastern Teton-
Including the following locations Cut Bank, Brady, Conrad, 
Fairfield, and Dutton
1243 AM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
UNTIL 6 AM MDT SATURDAY...

* WHAT...Snow and blowing snow occurring. Plan on slippery road 
  conditions, including during the morning commute. In addition, 
  some reductions to visibility are expected. Additional snow 
  accumulations of 3 to 5 inches are expected.

* WHERE...Eastern Glacier, Eastern Pondera and Eastern Teton
  counties.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause
  areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ011>014-044-045-047-050>054-031300-
/O.CON.KTFX.WW.Y.0040.171103T1200Z-171104T1800Z/
Hill-Cascade-Chouteau-Central and Southern Lewis and Clark-Toole-
Liberty-Blaine-Judith Basin-Fergus-Jefferson-Broadwater-Meagher-
Including the following locations Havre, Rocky Boy, Rudyard, 
Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter,
Big Sandy, Helena, Lincoln, MacDonald Pass, Rogers Pass, Shelby, 
Sunburst, Chester, Whitlash, Chinook, Harlem, Hays, Raynesford, 
Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, 
Grass Range, Montana City, Boulder, Boulder Hill, Elk Park Pass, 
Homestake Pass, Whitehall, Toston, Townsend, Martinsdale, 
and White Sulphur Springs
1243 AM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
FROM 6 AM THIS MORNING TO NOON MDT SATURDAY...

* WHAT...Snow expected. Plan on slippery road conditions. Total
  snow accumulations of 3 to 6 inches, with isolated amounts up to
  10 inches.

* WHERE...Portions of north central and southwest MT.

* WHEN...6 AM today to noon Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times. Snowfall could be heavy at times late this afternoon and
  early this evening. Snowfall rates around 1 inch per hour are
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ008-031300-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171105T0000Z/
Beaverhead-
Including the following locations Big Hole Pass, Wisdom, Dillon, 
Chief Joseph Pass, Monida Pass, and Wise River
1243 AM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
UNTIL 6 PM MDT SATURDAY...

* WHAT...Snow occurring. Total snow accumulations of 2 to 6 inches
  below 7000 feet, with isolated amounts near 12 inches at ridge
  tops.

* WHERE...Beaverhead County.

* WHEN...Until 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. The snowfall will let up in intensity
  during the morning, but intensify by late this afternoon. 
  Snowfall rates near 1 inch per hour are possible this evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

http://www.weather.gov/greatfalls
649 
WWUS45 KTFX 031007
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
407 AM MDT Fri Nov 3 2017

MTZ015-055-032200-
/O.CAN.KTFX.WW.Y.0040.000000T0000Z-171105T0000Z/
/O.CON.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
Madison-Gallatin-
Including the following locations Ennis, Norris Hill, 
Raynolds Pass, Twin Bridges, Virginia City, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
407 AM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT
UNTIL 6 PM MDT SATURDAY NOW FOR ALL ELEVATIONS...
...WINTER WEATHER ADVISORY IS CANCELLED...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions, especially during the evening commute tonight. New 
  snow accumulations of 4 to 8 inches at lower elevations and 8 to
  16 inches in the mountains.

* WHERE...Madison and Gallatin counties.

* WHEN...Until 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Periods of snow are expected through
  Saturday. However a period of heavy snow is expected from late
  this afternoon through Midnight. Snowfall rates of 1 to 2 inches
  per hour are possible during this time at all elevations.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ012-014-050-052>054-032200-
/O.UPG.KTFX.WW.Y.0040.171103T1200Z-171104T1800Z/
/O.EXB.KTFX.WS.W.0011.000000T0000Z-171104T1800Z/
Cascade-Central and Southern Lewis and Clark-Judith Basin-
Jefferson-Broadwater-Meagher-
Including the following locations Great Falls, Cascade, Belt, 
Kings Hill Pass, Helena, Lincoln, MacDonald Pass, Rogers Pass, 
Raynesford, Stanford, Hobson, Montana City, Boulder, 
Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, 
Townsend, Martinsdale, and White Sulphur Springs
407 AM MDT Fri Nov 3 2017

...WINTER STORM WARNING IN EFFECT
UNTIL NOON MDT SATURDAY FOR ALL ELEVATIONS...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions, including during the evening commute. New snow
  accumulations of 4 to 7 inches at lower elevations, and 8 to 12
  inches in the mountains.

* WHERE...Portions of central Montana.

* WHEN...Until noon Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. A period of heavy snow is expected from 
  2 PM through 7 PM this evening. Snowfall rates of 1 to 2 inches 
  per hour are possible during this time at all elevations.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ009-048-032200-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171104T1200Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
407 AM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions, including during the morning commute. Additional
  snow accumulations of 5 to 8 inches, with isolated amounts near
  12 inches near ridge tops.

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Snowfall rates could approach 1 inch per
  hour at times this morning through early this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ010-046-049-032200-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Eastern Glacier-Eastern Pondera-Eastern Teton-
Including the following locations Cut Bank, Brady, Conrad, 
Fairfield, and Dutton
407 AM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Snow and blowing snow occurring. Plan on difficult travel
  conditions, including during the evening commute. Additional
  snow accumulations of 3 to 6 inches are expected.

* WHERE...Eastern Glacier, Eastern Pondera and Eastern Teton
  counties.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Winds gusting as high as 25 mph will cause
  areas of blowing and drifting snow. A period of moderate
  snowfall is expected late this morning through the mid afternoon
  hours today. Snowfall rates could approach 1 inch per hour
  during this time.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ011-013-044-045-047-051-032200-
/O.CON.KTFX.WW.Y.0040.171103T1200Z-171104T1800Z/
Hill-Chouteau-Toole-Liberty-Blaine-Fergus-
Including the following locations Havre, Rocky Boy, Rudyard, 
Fort Benton, Carter, Big Sandy, Shelby, Sunburst, Chester, 
Whitlash, Chinook, Harlem, Hays, Lewistown, Winifred, 
Lewistown Divide, and Grass Range
407 AM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Snow expected. Plan on slippery road conditions,
  including during the evening commute. Total snow accumulations
  of 3 to 5 inches, with isolated amounts near 10 inches in the
  mountains.

* WHERE...Portions of central Montana and north central Montana.

* WHEN...6 AM today to noon Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

MTZ008-032200-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171105T0000Z/
Beaverhead-
Including the following locations Big Hole Pass, Wisdom, Dillon, 
Chief Joseph Pass, Monida Pass, and Wise River
407 AM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

* WHAT...Snow occurring. Plan on difficult travel conditions.
  Additional snow accumulations of 2 to 5 inches at lower
  elevations and 6 to 10 inches in the mountains.

* WHERE...Beaverhead.

* WHEN...Until 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

http://www.weather.gov/greatfalls
151 
WWUS45 KTFX 032055
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
255 PM MDT Fri Nov 3 2017

MTZ009-048-041200-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171104T1200Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
255 PM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions, including during the evening commute. Additional
  snow accumulations of up to two inches are expected before snow
  diminishes overnight.

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ015-055-041200-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
Madison-Gallatin-
Including the following locations Ennis, Norris Hill, 
Raynolds Pass, Twin Bridges, Virginia City, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
255 PM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions. Additional snow accumulations of 6 to 9 inches, with
  localized amounts up to 16 inches, are expected.

* WHERE...Madison and Gallatin.

* WHEN...Until 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. The heaviest snow will occur during peak
  commuting times this evening with snowfall rates of 1 to 2 
  inches per hour possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ012-014-050-052>054-041200-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171104T1800Z/
Cascade-Central and Southern Lewis and Clark-Judith Basin-
Jefferson-Broadwater-Meagher-
Including the following locations Great Falls, Cascade, Belt, 
Kings Hill Pass, Helena, Lincoln, MacDonald Pass, Rogers Pass, 
Raynesford, Stanford, Hobson, Montana City, Boulder, 
Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, 
Townsend, Martinsdale, and White Sulphur Springs
255 PM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions, including during the evening commute. Additional 
  snow accumulations of 3 to 6 inches, with localized amounts up 
  to 10 inches, are expected.

* WHERE...Portions of central Montana, southwest Montana and 
  west central Montana.

* WHEN...Until noon Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. The heaviest snow will occur during peak
  commuting times late this afternoon and evening with snowfall
  rates of 1 to 2 inches per hour possible. Heaviest snow is
  expected to occur south of a line from Lincoln to Geyser,
  including the Helena area but primarily south of Great Falls. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ010-046-049-041200-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Eastern Glacier-Eastern Pondera-Eastern Teton-
Including the following locations Cut Bank, Brady, Conrad, 
Fairfield, and Dutton
255 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Snow and blowing snow occurring. Plan on slippery road
  conditions, including during the evening commute. In addition,
  some reductions to visibility are expected. Additional snow
  accumulations of up to one inch are expected before snow
  diminished overnight.

* WHERE...Eastern Glacier, Eastern Pondera and Eastern Teton.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will 
  cause patchy blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

$$

MTZ011-013-044-045-047-051-041200-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171104T1800Z/
Hill-Chouteau-Toole-Liberty-Blaine-Fergus-
Including the following locations Havre, Rocky Boy, Rudyard, 
Fort Benton, Carter, Big Sandy, Shelby, Sunburst, Chester, 
Whitlash, Chinook, Harlem, Hays, Lewistown, Winifred, 
Lewistown Divide, and Grass Range
255 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Snow occurring. Plan on slippery road conditions.
  Additional snow accumulations of 1 to 3 inches except 3 to 7
  inches in Fergus county.

* WHERE...Portions of central Montana and north central Montana.

* WHEN...Until noon Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ008-041200-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171105T0000Z/
Beaverhead-
Including the following locations Big Hole Pass, Wisdom, Dillon, 
Chief Joseph Pass, Monida Pass, and Wise River
255 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

* WHAT...Snow occurring. Plan on difficult travel conditions.
  Additional snow accumulations of 3 to 7 inches. Localized
  amounts up to 10 inches possible in northern Beaverhead county.

* WHERE...Beaverhead.

* WHEN...Until 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

http://www.weather.gov/greatfalls
125 
WWUS45 KTFX 040120
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
720 PM MDT Fri Nov 3 2017

MTZ009-048-041200-
/O.CAN.KTFX.WS.W.0011.000000T0000Z-171104T1200Z/
/O.EXB.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Northern Rocky Mountain Front-Southern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, Heart Butte, Bynum, Choteau, and Augusta
720 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT SATURDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Areas of light snow continuing. Plan on slippery road 
  conditions. Additional snow accumulations of up to one inch are 
  expected.

* WHERE...Northern Rocky Mountain Front and Southern Rocky 
  Mountain Front.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ010-046-049-040230-
/O.CAN.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Eastern Glacier-Eastern Pondera-Eastern Teton-
720 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

Little to no additional widespread snow is expected through the 
remainder of tonight.

$$

MTZ044-040230-
/O.CAN.KTFX.WW.Y.0040.000000T0000Z-171104T1800Z/
Toole-
720 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

Little to no additional widespread snow is expected through the
remainder of tonight.

$$

MTZ012-014-050-041200-
/O.EXT.KTFX.WS.W.0011.000000T0000Z-171104T1200Z/
Cascade-Central and Southern Lewis and Clark-Judith Basin-
Including the following locations Great Falls, Cascade, Belt, 
Kings Hill Pass, Helena, Lincoln, MacDonald Pass, Rogers Pass, 
Raynesford, Stanford, and Hobson
720 PM MDT Fri Nov 3 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 AM MDT SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Additional snow accumulations of 1 to 3 inches, 
  with localized amounts up to 5 inches, are expected.

* WHERE...Cascade, Central and Southern Lewis and Clark and 
  Judith Basin.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Outdoor travel may be very difficult at
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ015-055-041630-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
Madison-Gallatin-
Including the following locations Ennis, Norris Hill, 
Raynolds Pass, Twin Bridges, Virginia City, Bozeman, 
West Yellowstone, Battle Ridge Pass, Bozeman Pass, 
and Targhee Pass
720 PM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Additional snow accumulations of 5 to 8 inches, 
  with localized amounts up to 16 inches, are expected.

* WHERE...Madison and Gallatin.

* WHEN...Until 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Outdoor travel may be very difficult, if
  not impossible, at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ052>054-041630-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171104T1800Z/
Jefferson-Broadwater-Meagher-
Including the following locations Montana City, Boulder, 
Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, 
Townsend, Martinsdale, and White Sulphur Springs
720 PM MDT Fri Nov 3 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Additional snow accumulations of 4 to 6 inches, 
  with localized amounts up to 8 inches, are expected.

* WHERE...Jefferson, Broadwater and Meagher.

* WHEN...Until noon Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Outdoor travel may be very difficult, if
  not impossible, at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

MTZ011-013-045-047-041200-
/O.EXT.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Hill-Chouteau-Liberty-Blaine-
Including the following locations Havre, Rocky Boy, Rudyard, 
Fort Benton, Carter, Big Sandy, Chester, Whitlash, Chinook, 
Harlem, and Hays
720 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* WHAT...Snow tapering off overnight. Plan on slippery road 
  conditions. Additional snow accumulations of up to two inches 
  are expected.

* WHERE...Hill, Chouteau, Liberty and Blaine.

* WHEN...Until 6 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ051-041630-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171104T1800Z/
Fergus-
Including the following locations Lewistown, Winifred, 
Lewistown Divide, and Grass Range
720 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Snow occurring. Plan on slippery road conditions. 
  Additional snow accumulations of 3 to 5 inches, with localized 
  amounts up to 7 inches, are expected.

* WHERE...Fergus.

* WHEN...Until noon Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MTZ008-041630-
/O.CON.KTFX.WW.Y.0040.000000T0000Z-171105T0000Z/
Beaverhead-
Including the following locations Big Hole Pass, Wisdom, Dillon, 
Chief Joseph Pass, Monida Pass, and Wise River
720 PM MDT Fri Nov 3 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

* WHAT...Snow occurring. Plan on slippery road conditions. 
  Additional snow accumulations of 3 to 5 inches, with localized 
  amounts up to 12 inches, are expected.

* WHERE...Beaverhead.

* WHEN...Until 6 PM Saturday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

http://www.weather.gov/greatfalls
970 
WWUS45 KTFX 041000
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
400 AM MDT Sat Nov 4 2017

MTZ052>054-041100-
/O.CAN.KTFX.WS.W.0011.000000T0000Z-171104T1800Z/
Jefferson-Broadwater-Meagher-
400 AM MDT Sat Nov 4 2017

...WINTER STORM WARNING IS CANCELLED...

A few scattered light snow showers will be possible over the
region today, however any new snow accumulations should be less
than a half inch. Thus the winter storm warning has been
cancelled.

$$

MTZ012-014-050-041100-
/O.CAN.KTFX.WS.W.0011.000000T0000Z-171104T1200Z/
Cascade-Central and Southern Lewis and Clark-Judith Basin-
400 AM MDT Sat Nov 4 2017

...WINTER STORM WARNING IS CANCELLED...

A few scattered light snow showers will be possible over the
region today, however any new snow accumulations should be less
than a half inch. Thus the winter storm warning has been
cancelled.

$$

MTZ015-041100-
/O.CAN.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
Madison-
400 AM MDT Sat Nov 4 2017

...WINTER STORM WARNING IS CANCELLED...

Scattered light snow showers will be possible over the region 
today, however any new snow accumulations should be less than an 
inch. Thus the winter storm warning has been cancelled.

$$

MTZ009-011-013-045-047-048-041100-
/O.CAN.KTFX.WW.Y.0040.000000T0000Z-171104T1200Z/
Northern Rocky Mountain Front-Hill-Chouteau-Liberty-Blaine-
Southern Rocky Mountain Front-
400 AM MDT Sat Nov 4 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

A few scattered light snow showers will be possible over the
region today, however any new snow accumulations should be less
than a half inch. Thus the winter weather advisory has been 
cancelled.

$$

MTZ051-041100-
/O.CAN.KTFX.WW.Y.0040.000000T0000Z-171104T1800Z/
Fergus-
400 AM MDT Sat Nov 4 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

A few scattered light snow showers will be possible over the
region today, however any new snow accumulations should be less
than a half inch. Thus the winter weather advisory has been 
cancelled.

$$

MTZ008-041100-
/O.CAN.KTFX.WW.Y.0040.000000T0000Z-171105T0000Z/
Beaverhead-
400 AM MDT Sat Nov 4 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

A few scattered light snow showers will be possible over the
region today, however any new snow accumulations should be less
than an inch. Thus the winter weather advisory has been 
cancelled.

$$

MTZ055-050000-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
Gallatin-
Including the following locations Bozeman, West Yellowstone, 
Battle Ridge Pass, Bozeman Pass, and Targhee Pass
400 AM MDT Sat Nov 4 2017

...WINTER STORM WARNING REMAINS IN EFFECT
UNTIL 6 PM MDT THIS EVENING...

* WHAT...Periods of snow...heavy at times is occurring. Plan on
  difficult travel conditions. Additional snow accumulations of 1
  to 3 inches at lower elevations and up to 6 inches in the
  mountains expected.

* WHERE...Gallatin County.

* WHEN...Until 6 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. The heaviest snowfall is expected to occur
  before 10 AM this morning, with the light snowfall slowly 
  diminishing during the afternoon hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Listen to NOAA Weather Radio or your local media for the latest
updates on this situation.

$$

http://www.weather.gov/greatfalls
784 
WWUS45 KTFX 041628
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1028 AM MDT Sat Nov 4 2017

MTZ055-050000-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
Gallatin-
Including the following locations Bozeman, West Yellowstone, 
Battle Ridge Pass, Bozeman Pass, and Targhee Pass
1028 AM MDT Sat Nov 4 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* WHAT...Heavy snow occurring. Snow continues to taper off in the
  Bozeman area, but snow will continue into this afternoon across
  central and southern Gallatin County. Plan on difficult travel
  conditions in those areas of the county with additional snow
  accumulations of 1 to 4 inches.

* WHERE...Mainly central and southern Gallatin County.

* WHEN...Until 6 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. Roads will continue to be snow-covered and
  slick even in areas where the snow has ended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions can be obtained by calling 
5 1 1.

$$

http://www.weather.gov/greatfalls

MARTIN
348 
WWUS45 KTFX 042101
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
301 PM MDT Sat Nov 4 2017

MTZ055-050000-
/O.CON.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
Gallatin-
Including the following locations West Yellowstone and Targhee
Pass
301 PM MDT Sat Nov 4 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* WHAT...Heavy snow occurring. Plan on difficult travel conditions
  in and around the West Yellowstone area. Additional snow
  accumulations of 2 to 4 inches are expected across far southern
  Gallatin County.

* WHERE...Extreme southern Gallatin County.

* WHEN...Until 6 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions can be obtained by calling 
5 1 1.

$$

MARTIN

MTZ009-050000-
/O.NEW.KTFX.WW.Y.0041.171105T0000Z-171106T1500Z/
Northern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, and Heart Butte
301 PM MDT Sat Nov 4 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM MDT THIS EVENING
TO 8 AM MST MONDAY...

* WHAT...Snow expected. Plan on difficult travel conditions. Total
  snow accumulations of 3 to 6 inches are expected.

* WHERE...Northern Rocky Mountain Front.

* WHEN...6 PM today to 8 AM Monday. Two waves of snow will impact
  the area, first this evening through tonight, then again later
  Sunday into Sunday night. There may be a brief lull in the snow
  Sunday morning.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions can be obtained by calling 5 1 1.

$$

http://www.weather.gov/greatfalls

MARTIN
637 
WWUS45 KTFX 042336
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
536 PM MDT Sat Nov 4 2017

MTZ055-050045-
/O.EXP.KTFX.WS.W.0011.000000T0000Z-171105T0000Z/
Gallatin-
Including the following locations West Yellowstone and Targhee
Pass
536 PM MDT Sat Nov 4 2017

...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING...

Snow is ending this evening across southern portions of Gallatin
county and little or no additional accumulation is expected. 
Therefore the Winter Storm Warning will expire at 6 pm.


$$

MTZ009-051200-
/O.CON.KTFX.WW.Y.0041.171105T0000Z-171106T1500Z/
Northern Rocky Mountain Front-
Including the following locations Logan Pass, Marias Pass, 
Browning, and Heart Butte
536 PM MDT Sat Nov 4 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST
MONDAY...

* WHAT...Snow expected. Plan on difficult travel conditions. Total
  snow accumulations of 3 to 6 inches are expected.

* WHERE...Northern Rocky Mountain Front.

* WHEN...6 PM today to 8 AM Monday. Two waves of snow will impact
  the area, first this evening through tonight, then again later
  Sunday into Sunday night. There may be a brief lull in the snow
  Sunday morning.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

http://www.weather.gov/greatfalls

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Great Falls, MT wrote its last area forecast discussion before this winter storm warning went out at Nov 1, 2:38 PM MDT, 7 minutes earlier.

Area forecast discussion, Nov 1, 2:38 PM MDT, 7 minutes before
Area Forecast Discussion
National Weather Service Great Falls MT
238 PM MDT Wed Nov 1 2017

.SYNOPSIS...

Low pressure exiting into the Dakotas tonight will result in
decreasing precipitation across north central and southwest
Montana this evening with a cold airmass now in place. The next
weather system to impact the region will develop off the British
Columbia coast Thursday morning with snow re-developing over the
Rockies ahead of this system. Snow will increase again across the
rest of north central and southwest Montana Thursday night
through Friday night as the weather system gradually moves inland.

&&

.DISCUSSION...

Tonight through Thursday...Widespread snow across central and
northern portions of SW MT will gradually diminish this evening as
favorable upper level jet dynamics shift south of the forecast
area and baroclinic zone/mid level convergence across the region
weakens. Cold and moist airmass remains across the region tonight
into Thursday for considerable low level cloudiness and some
flurries or light snow showers persisting. Next wave of energy
rotating around the large scale trough over western Canada drops
south across Vancouver Island tonight and slowly turns inland
into the Pacific NW Thursday. This will focus a plume of moisture
into NW MT Thursday. In addition to the increasing Pacific
moisture across NW MT, cold air will remain in place east of the
Rockies with low level easterly upslope flow supporting the re-
development of snow along the Rocky Mtn front by Thursday morning
and continuing though the day. Ongoing set of winter weather
highlights looks on track to expire this evening as the 1st round
of precipitation wanes. A new winter storm warning will be issued
for the Rocky Mtn Front zones to highlight the next round of snow
beginning there Thursday morning. Hoenisch

Thursday night through Sunday...A mid- to upper-level disturbance
over and near Vancouver Island at the start of this period will move
generally eastward and cross our CWA on Saturday. Behind this
disturbance, shortwave high pressure ridging will build-in from the
west Saturday evening into Sunday. At the surface, models are in
better agreement that a front over the far-southern part of
Southwest MT should move little through early Saturday morning as
warm advection occurs south of the front, while an arctic high
pressure ridge builds into North-Central MT from western Canada.
Later on Saturday, this front should advance eastward and southward
as a cold front due to the passage of the aforementioned shortwave
trough and further building of the arctic ridge. This surface ridge
should then blanket the entire CWA on Sunday.

The aforementioned surface front will act as a focus for
precipitation Thursday night through most of Saturday. In addition,
isentropic lift along this front and ahead of the shortwave trough
from the Pac NW should allow precipitation to become more widespread
over much of our region Thursday night through Saturday morning.
During the same time frame, easterly low-level upslope flow along
the Rocky Mountain Front should boost precipitation rates there.
North of the stationary front, a colder airmass should support just
snow, while a rain/snow mix is still forecast in the somewhat warmer
air south of the front. However, as the boundary transitions into a
cold front, any mixed precipitation should change to snow.
Precipitation probabilities then decrease, overall, later Saturday
into Sunday as high pressure ridging gains firm control over the
CWA. Below-normal temperatures are forecast during the period, with
the coldest readings over North-Central MT.

Snow totals for Thursday night through Sunday look to range from
several inches on the plains and the deeper Southwest MT valleys to
1-2 feet for most of our mountains, including the Rocky Mountain
Front, Central MT ranges, and the Southwest MT ranges. Will let
future shifts evaluate the need to expand our winter weather
highlights for this additional snowfall.
Jaszka

Sunday Night through Wednesday...Models start in good agreement
Sunday evening with a longwave trough over the PacNW with very
subtle ridging across central Montana. Models completely diverge by
early Monday until mid- to late week.

Assuming the longwave trough lifts to the east across our region, it
would seem likely conditions will be favorable for light overrunning
snow to develop Sunday night into Monday, while a cold front moves
across southwest Montana, which may produce a brief, but a bit
heavier, snow band, with the potential for minor accumulations. A
warming trend then commences with increasing southwest flow would
then likely bring some increasing winds for Tuesday. A digging
longwave trough over the PacNW toward mid-week would likely begin
pushing moisture our way, especially near and along the Continental
Divide.  CC

&&

.AVIATION...
Updated 1733Z.

Area of moderate to locally heavy snow continues to sink south
across central MT through early this afternoon, impacting KHLN and
KBZN terminals with IFR to at times LIFR cigs and visibility. To the
north of this area snow showers and low ceilings continue but
visibility is not as persistently poor, though IFR conditions will
likely prevail at KGTF and KLWT and occasionally at the KCTB
terminal through this afternoon. Coverage and intensity of snow will
decrease significantly this evening, but low clouds will persist
with only slight improvement to flight conditions under continued
low cloud ceilings with Mtn obscuration. Hoenisch

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  21  31  22  30 /  40  60  50  50
CTB  18  27  15  23 /  30  90  80  70
HLN  22  35  24  32 /  60  30  40  70
BZN  23  39  26  40 /  70  20  50  60
WEY  24  37  28  39 /  60  50  70  80
DLN  25  43  29  45 /  40  20  40  40
HVR  21  31  21  29 /  10  50  50  50
LWT  19  31  21  31 /  50  20  40  60

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until 9 PM MDT this evening Broadwater...
Cascade...Central and Southern Lewis and Clark...Chouteau...
Eastern Glacier...Eastern Pondera...Eastern Teton...Fergus...
Gallatin...Jefferson...Judith Basin...Meagher...Northern Rocky
Mountain Front...Southern Rocky Mountain Front...Toole.

Winter Storm Warning until 9 PM MDT this evening above 5000 feet
for Broadwater...Cascade...Central and Southern Lewis and
Clark...Gallatin...Jefferson...Judith Basin...Meagher...Northern
Rocky Mountain Front...Southern Rocky Mountain Front.

Winter Storm Warning from 6 AM Thursday to noon MDT Friday
Northern Rocky Mountain Front...Southern Rocky Mountain Front.

&&

weather.gov/greatfalls

In the hours before

Local storm report, Nov 1, 10:36 AM MDT, 4 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1036 AM MDT WED NOV 01 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     SNOW             12 ENE GARNEILL         46.79N 109.51W
11/01/2017  M8.0 INCH        FERGUS             MT   MESONET

            24-HOUR SNOWFALL AT CRYSTAL LAKE SNOTEL. ELEVATION 6050
            FT MSL.

&&

KJ
Local storm report, Nov 1, 10:38 AM MDT, 4 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1038 AM MDT WED NOV 01 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     SNOW             6 N BASIN               46.36N 112.26W
11/01/2017  M5.0 INCH        JEFFERSON          MT   MESONET

            24-HOUR SNOWFALL AT ROCKER PEAK SNOTEL. ELEVATION 8000
            FT MSL.

&&

KJ
Local storm report, Nov 1, 10:40 AM MDT, 4 hours 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1040 AM MDT WED NOV 01 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     SNOW             18 W WHITE SULPHUR SPRI 46.56N 111.29W
11/01/2017  M11.0 INCH       MEAGHER            MT   MESONET

            24-HOUR SNOWFALL AT BOULDER MOUNTAIN SNOTEL. ELEVATION
            7950 FT MSL.

&&

KJ
Local storm report, Nov 1, 10:43 AM MDT, 4 hours 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1043 AM MDT WED NOV 01 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     SNOW             13 ENE BELGRADE         45.87N 110.93W
11/01/2017  M1.0 INCH        GALLATIN           MT   MESONET

            24-HOUR SNOWFALL AT SACAJAWEA SNOTEL. ELEVATION 6550 FT
            MSL.

&&

KJ
Local storm report, Nov 1, 11:57 AM MDT, 2 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1157 AM MDT WED NOV 01 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1155 AM     SNOW             8 SW BELT               47.30N 111.05W
11/01/2017  M8.0 INCH        CASCADE            MT   TRAINED SPOTTER

            STORM-TOTAL THUS FAR. STILL SNOWING AT REPORT TIME.

&&

KJ
Local storm report, Nov 1, 2:22 PM MDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
222 PM MDT WED NOV 01 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1154 AM     SNOW             GREAT FALLS             47.50N 111.29W
11/01/2017  M2.0 INCH        CASCADE            MT   PUBLIC

            STORM-TOTAL IN FOX FARM AREA. STILL SNOWING AT TIME OF
            REPORT.

&&

KJ

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 1, 4:08 AM MDTSpecial Weather StatementTFXBroadwater, Jefferson, Lewis and Clark, Meagher112 min

Nearby

Winter Storm Warnings in Montana, 2017Every winter storm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.