Alert archive / Montana / Winter Storm Warnings in 2017

Winter Storm Warning 2, NWS Billings, MT

January 30, 20176 counties in Montana

NWS Billings, MT issued this winter storm warning at Jan 30, 2017, 3:50 AM MST for 6 counties in Montana. It took effect at Jan 30, 2017, 6:00 PM MST. It was in force for 40 hr. 60 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jan 30, 2017, 3:50 AM MST (10:50 UTC)
In effect from
Jan 30, 2017, 6:00 PM MST
Expired
Feb 1, 2017, 10:19 AM MST
In force
40 hr
Issued by
NWS Billings, MT

Counties Carbon County, MT, Golden Valley County, MT, Park County, MT, Stillwater County, MT, Sweet Grass County, MT, Wheatland County, MT

The radar

The Billings radar (KBLX), 81 km from the middle of the area, began a volume at 10:56 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jan 31, 1:00 AM MSTSNOW 22 N Cooke City, MT
Jan 31, 1:00 AM MSTSNOW 33 N Cooke City, MT
Jan 31, 6:00 AM MSTSNOW 15 Se Reed Point, MT
Jan 31, 6:00 AM MSTSNOW 1.81 Nw Columbus, MT
Jan 31, 7:00 AM MSTSNOW 11 S Park City, MT
Jan 31, 7:00 AM MSTSNOW 17 E Columbus, MT
Jan 31, 7:00 AM MSTSNOW 1Mcleod, MT
Jan 31, 7:00 AM MSTSNOW 1.2Wilsall, MT
Jan 31, 7:00 AM MSTSNOW 1.511 Sse Big Timber, MT
Jan 31, 7:00 AM MSTSNOW 1.53 Ne Red Lodge, MT
Jan 31, 7:00 AM MSTSNOW 1.67 Ese Livingston, MT
Jan 31, 7:00 AM MSTSNOW 1.78 E Columbus, MT
Jan 31, 7:00 AM MSTSNOW 22 N Bridger, MT
Jan 31, 7:00 AM MSTSNOW 2.16 W Bridger, MT
Jan 31, 7:00 AM MSTSNOW 2.52 Wsw Joliet, MT
Jan 31, 7:00 AM MSTSNOW 2.54 N Red Lodge, MT
Jan 31, 7:00 AM MSTSNOW 2.75 N Red Lodge, MT
Jan 31, 7:15 AM MSTSNOW 2.32 Ssw Livingston, MT
Jan 31, 7:30 AM MSTSNOW 13 Sw Red Lodge, MT
Jan 31, 8:00 AM MSTSNOW 314 S Livingston, MT
Jan 31, 8:00 AM MSTSNOW 3.11 Wsw Livingston, MT
Jan 31, 8:00 AM MSTSNOW 3.5Springdale, MT
Jan 31, 8:11 AM MSTSNOW 1.82 Se Joliet, MT
Jan 31, 8:15 AM MSTSNOW 36 Ene Livingston, MT
Jan 31, 8:24 AM MSTSNOW 35 Sse Columbus, MT
Jan 31, 9:09 AM MSTSNOW 3Big Timber, MT
Jan 31, 11:20 AM MSTHEAVY SNOW 6Reedpoint, MT
Jan 31, 11:37 AM MSTHEAVY SNOW 6Big Timber, MT
Jan 31, 12:06 PM MSTHEAVY SNOW 8Silver Gate, MT
Jan 31, 1:03 PM MSTSNOW 3Roscoe, MT
Jan 31, 1:12 PM MSTSNOW 42 N Red Lodge, MT
Jan 31, 2:30 PM MSTHEAVY SNOW 91 Sse Big Timber, MT
Jan 31, 2:42 PM MSTHEAVY SNOW 7Absarokee, MT
Jan 31, 3:18 PM MSTHEAVY SNOW 83 Nne Pray, MT
Jan 31, 4:00 PM MSTSNOW 56 Wsw Park City, MT
Jan 31, 4:00 PM MSTHEAVY SNOW 1318 Sw Fishtail, MT
Jan 31, 5:00 PM MSTSNOW 41 S Red Lodge, MT
Jan 31, 6:00 PM MSTSNOW 3.75 W Melville, MT
Jan 31, 6:00 PM MSTSNOW 5.61 S Rapelje, MT
Jan 31, 6:00 PM MSTHEAVY SNOW 1312 S Livingston, MT
Jan 31, 7:00 PM MSTHEAVY SNOW 8Big Timber, MT
Jan 31, 8:30 PM MSTHEAVY SNOW 71 Wsw Roberts, MT
Feb 1, 1:00 AM MSTSNOW 312 Ne Wilsall, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 613 Ene Wilsall, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 65 W Red Lodge, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 1016 Sw Nye, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 1025 Ese Emigrant, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 1026 Ese Emigrant, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 103 Ssw Luther, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 122 N Cooke City, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 1414 W Nye, MT
Feb 1, 1:00 AM MSTHEAVY SNOW 163 N Cooke City, MT
Feb 1, 6:00 AM MSTSNOW 55 S Ryegate, MT
Feb 1, 6:00 AM MSTHEAVY SNOW 85 Se Reed Point, MT
Feb 1, 6:00 AM MSTHEAVY SNOW 95 Se Reed Point, MT
Feb 1, 7:00 AM MSTSNOW 2Big Timber, MT
Feb 1, 7:00 AM MSTSNOW 2.5Big Timber, MT
Feb 1, 7:00 AM MSTSNOW 36 W Bridger, MT
Feb 1, 7:00 AM MSTSNOW 3Judith Gap, MT
Feb 1, 7:00 AM MSTSNOW 3.5Ryegate, MT

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 10.8 hours before the alert went out and 194 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Great_falls, MT at 00:00Z on 2017-01-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Great_falls, MT at 00:00Z on 2017-01-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 221 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2962 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
221 m²/s²
0-3 km storm-relative helicity
292 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

747 
WWUS45 KBYZ 301050
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
350 AM MST MON JAN 30 2017

MTZ067-068-311100-
/O.UPG.KBYZ.WS.A.0002.170131T0000Z-170201T1200Z/
/O.NEW.KBYZ.WS.W.0002.170131T0100Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
350 AM MST MON JAN 30 2017

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 6 PM THIS 
EVENING TO 6 PM MST WEDNESDAY. 

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS.

* TIMING...SNOW WILL BEGIN MONDAY EVENING AND CONTINUE THROUGH
  LATE WEDNESDAY. SNOW MAY BE HEAVY AT TIMES.

* SNOW ACCUMULATION...1 TO 2 FEET OF SNOW IS POSSIBLE THROUGH THE
  PERIOD...HEAVIEST ON WEST AND SOUTH ASPECTS. 

* AFTER A BRIEF BREAK WEDNESDAY NIGHT PERIODS OF SNOW ARE LIKELY 
  TO CONTINUE AT TIMES INTO THE WEEKEND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ028-040-041-063-311100-
/O.UPG.KBYZ.WS.A.0002.170131T0000Z-170201T1200Z/
/O.NEW.KBYZ.WS.W.0002.170131T0700Z-170201T1300Z/
SOUTHERN WHEATLAND-NORTHERN PARK-NORTHERN SWEET GRASS-JUDITH GAP-
350 AM MST MON JAN 30 2017

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM
MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM MIDNIGHT 
TONIGHT TO 6 AM MST WEDNESDAY. 

* IMPACTS...SNOW WILL CREATE SNOW PACKED ROADS AND POOR 
  VISIBILITIES CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA TONIGHT AND CONTINUE
  THROUGH EARLY WEDNESDAY MORNING. 

* SNOW ACCUMULATION...5 TO 10 INCHES. LOCALLY HEAVIER
  ACCUMULATIONS POSSIBLE. 

* AFTER A BRIEF BREAK WEDNESDAY PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ034-042-311100-
/O.UPG.KBYZ.WS.A.0002.170131T0600Z-170201T1200Z/
/O.NEW.KBYZ.WS.W.0002.170131T0700Z-170201T1300Z/
NORTHERN STILLWATER-GOLDEN VALLEY-
350 AM MST MON JAN 30 2017

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM
MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM MIDNIGHT 
TONIGHT TO 6 AM MST WEDNESDAY. 

* IMPACTS...SNOW WILL CREATE SNOW PACKED ROADS AND POOR 
  VISIBILITIES CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA TONIGHT AND CONTINUE
  THROUGH EARLY WEDNESDAY MORNING. 

* SNOW ACCUMULATION...5 TO 10 INCHES. LOCALLY HEAVIER
  ACCUMULATIONS POSSIBLE. 

* AFTER A BRIEF BREAK WEDNESDAY PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ056-064>066-311100-
/O.UPG.KBYZ.WS.A.0002.170131T0000Z-170201T1200Z/
/O.NEW.KBYZ.WW.Y.0005.170131T0700Z-170201T1300Z/
RED LODGE FOOTHILLS-PARADISE VALLEY-LIVINGSTON AREA-
BEARTOOTH FOOTHILLS-
INCLUDING THE LOCATIONS OF LIVINGSTON AND SPRINGDALE
350 AM MST MON JAN 30 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 AM MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM MIDNIGHT 
TONIGHT TO 6 AM MST WEDNESDAY. 

* IMPACTS...SNOW WILL CREATE SNOW PACKED ROADS AND POOR
  VISIBILITIES CAUSING DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA TONIGHT AND CONTINUE
  THROUGH EARLY WEDNESDAY MORNING. 

* SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE. 

* AFTER A BRIEF BREAK WEDNESDAY PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY CAN BE ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS LIGHT SNOW...BLOWING SNOW...SLEET...
FREEZING RAIN...AND EXTREME WIND CHILLS.

&&

$$

MTZ029-035-038-039-057-311100-
/O.UPG.KBYZ.WS.A.0002.170131T0600Z-170201T1200Z/
/O.NEW.KBYZ.WW.Y.0005.170131T0700Z-170201T1300Z/
MUSSELSHELL-YELLOWSTONE-SOUTHERN BIG HORN-EASTERN CARBON-
NORTHERN BIG HORN-
350 AM MST MON JAN 30 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 AM MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM MIDNIGHT 
TONIGHT TO 6 AM MST WEDNESDAY. 

* IMPACTS...SNOW WILL CREATE SNOW PACKED ROADS AND POOR
  VISIBILITIES CAUSING DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA TONIGHT AND CONTINUE
  THROUGH EARLY WEDNESDAY MORNING. 

* SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER
  ACCUMULATIONS POSSIBLE. 

* AFTER A BRIEF BREAK WEDNESDAY PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY CAN BE ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS LIGHT SNOW...BLOWING SNOW...SLEET...
FREEZING RAIN...AND EXTREME WIND CHILLS.

&&

$$

MTZ058-WYZ099-311100-
/O.NEW.KBYZ.WW.Y.0005.170131T0700Z-170201T1300Z/
SOUTHERN ROSEBUD-SHERIDAN FOOTHILLS-
350 AM MST MON JAN 30 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 AM MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM MIDNIGHT 
TONIGHT TO 6 AM MST WEDNESDAY. 

* IMPACTS...SNOW WILL CREATE SNOW PACKED ROADS AND POOR
  VISIBILITIES CAUSING DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA TONIGHT AND CONTINUE
  THROUGH EARLY WEDNESDAY MORNING. 

* SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER
  ACCUMULATIONS POSSIBLE. 

* AFTER A BRIEF BREAK WEDNESDAY PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY CAN BE ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS LIGHT SNOW...BLOWING SNOW...SLEET...
FREEZING RAIN...AND EXTREME WIND CHILLS.

&&

$$

HTTP://WEATHER.GOV/BILLINGS
8 follow-up statements
730 
WWUS45 KBYZ 302118
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
218 PM MST MON JAN 30 2017

MTZ066-312130-
/O.UPG.KBYZ.WW.Y.0005.170131T0700Z-170201T1300Z/
/O.EXA.KBYZ.WS.W.0002.170131T0700Z-170201T1300Z/
BEARTOOTH FOOTHILLS-
218 PM MST MON JAN 30 2017

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM
MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW WHICH IS IN EFFECT FROM MIDNIGHT 
TONIGHT TO 6 AM MST WEDNESDAY. THIS REPLACES THE WINTER WEATHER 
ADVISORY THAT WAS PREVIOUSLY IN EFFECT. 

* IMPACTS...SNOW PACKED ROADS AND POOR VISIBILITIES CAUSING 
  HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA TONIGHT AND CONTINUE 
  THROUGH EARLY WEDNESDAY MORNING.

* SNOW ACCUMULATION...7 TO 10 INCHES.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ067-068-312130-
/O.CON.KBYZ.WS.W.0002.170131T0100Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
218 PM MST MON JAN 30 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM MST WEDNESDAY...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...SNOW WILL BEGIN THIS EVENING AND CONTINUE THROUGH LATE
  WEDNESDAY. SNOW MAY BE HEAVY AT TIMES.

* SNOW ACCUMULATION...1 TO 2 FEET OF SNOW IS POSSIBLE THROUGH 
  THE PERIOD...HEAVIEST ON WEST AND SOUTH ASPECTS. 

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ028-034-040>042-063-312130-
/O.CON.KBYZ.WS.W.0002.170131T0700Z-170201T1300Z/
SOUTHERN WHEATLAND-NORTHERN STILLWATER-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-JUDITH GAP-
218 PM MST MON JAN 30 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 AM MST WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS AND POOR VISIBILITIES CAUSING 
  HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA TONIGHT AND CONTINUE 
  THROUGH EARLY WEDNESDAY MORNING.

* SNOW ACCUMULATION...6 TO 10 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ029-035-038-039-056>058-064-065-WYZ099-312130-
/O.CON.KBYZ.WW.Y.0005.170131T0700Z-170201T1300Z/
MUSSELSHELL-YELLOWSTONE-SOUTHERN BIG HORN-EASTERN CARBON-
RED LODGE FOOTHILLS-NORTHERN BIG HORN-SOUTHERN ROSEBUD-
PARADISE VALLEY-LIVINGSTON AREA-SHERIDAN FOOTHILLS-
INCLUDING THE LOCATIONS OF LIVINGSTON AND SPRINGDALE
218 PM MST MON JAN 30 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 6 AM MST WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS AND POOR VISIBILITIES CAUSING 
  DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA TONIGHT AND CONTINUE 
  THROUGH EARLY WEDNESDAY MORNING.

* SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO  
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY CAN BE ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS LIGHT SNOW...BLOWING SNOW...SLEET...
FREEZING RAIN...AND EXTREME WIND CHILLS.

&&

$$

HTTP://WEATHER.GOV/BILLINGS
060 
WWUS45 KBYZ 310948
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
248 AM MST TUE JAN 31 2017

MTZ067-068-011000-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
248 AM MST TUE JAN 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST
WEDNESDAY...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH WEDNESDAY. SNOW 
  MAY BE HEAVY AT TIMES. 

* SNOW ACCUMULATION...1 TO 2 FEET OF SNOW IS POSSIBLE THROUGH 
  THE PERIOD...HEAVIEST ON WEST AND SOUTH ASPECTS.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ028-034-040>042-063-066-011000-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170201T1300Z/
SOUTHERN WHEATLAND-NORTHERN STILLWATER-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-JUDITH GAP-BEARTOOTH FOOTHILLS-
248 AM MST TUE JAN 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS AND POOR VISIBILITIES CAUSING 
  HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA EARLY THIS MORNING AND
  CONTINUE THROUGH EARLY WEDNESDAY MORNING.

* SNOW ACCUMULATION...6 TO 10 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

WYZ098-011000-
/O.EXB.KBYZ.WW.Y.0005.000000T0000Z-170202T0100Z/
NORTHEAST BIGHORN MOUNTAINS-
248 AM MST TUE JAN 31 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 6 PM MST 
WEDNESDAY. 

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN THE
  MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH WEDNESDAY.

* SNOW ACCUMULATION...8 TO 12 INCHES THROUGH THE PERIOD.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY CAN BE ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS LIGHT SNOW...BLOWING SNOW...SLEET...
FREEZING RAIN...AND EXTREME WIND CHILLS.

&&

$$

MTZ029-035-038-039-056>058-064-065-WYZ099-011000-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170201T1300Z/
MUSSELSHELL-YELLOWSTONE-SOUTHERN BIG HORN-EASTERN CARBON-
RED LODGE FOOTHILLS-NORTHERN BIG HORN-SOUTHERN ROSEBUD-
PARADISE VALLEY-LIVINGSTON AREA-SHERIDAN FOOTHILLS-
INCLUDING THE LOCATIONS OF LIVINGSTON AND SPRINGDALE
248 AM MST TUE JAN 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS AND POOR VISIBILITIES CAUSING 
  DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL DEVELOP OVER THE AREA EARLY THIS MORNING AND
  CONTINUE THROUGH EARLY WEDNESDAY MORNING.

* SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY CAN BE ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS LIGHT SNOW...BLOWING SNOW...SLEET...
FREEZING RAIN...AND EXTREME WIND CHILLS.

&&

$$

HTTP://WEATHER.GOV/BILLINGS
124 
WWUS45 KBYZ 311617
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
917 AM MST TUE JAN 31 2017

MTZ064-065-011300-
/O.UPG.KBYZ.WW.Y.0005.000000T0000Z-170201T1300Z/
/O.EXA.KBYZ.WS.W.0002.000000T0000Z-170201T1300Z/
PARADISE VALLEY-LIVINGSTON AREA-
INCLUDING THE LOCATIONS OF LIVINGSTON AND SPRINGDALE
917 AM MST TUE JAN 31 2017

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
STORM WARNING WHICH IS IN EFFECT UNTIL 6 AM MST WEDNESDAY. THIS
REPLACES THE WINTER WEATHER ADVISORY PREVIOUS IN EFFECT FOR THIS
AREA. 

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR VISIBILITIES
  CAUSING DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL CONTINUE OVER THE AREA TODAY INTO TONIGHT.
  THE HEAVIEST SNOWFALL IS EXPECTED THROUGH MIDDAY. 

* SNOW ACCUMULATION...5 TO 8 INCHES. 

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ067-068-011630-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
917 AM MST TUE JAN 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST
WEDNESDAY...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH WEDNESDAY. 
  SNOW MAY BE HEAVY AT TIMES. 

* SNOW ACCUMULATION...1 TO 2 FEET OF SNOW IS POSSIBLE THROUGH 
  THE PERIOD...HEAVIEST ON WEST AND SOUTH ASPECTS.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ028-034-040>042-063-066-011300-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170201T1300Z/
SOUTHERN WHEATLAND-NORTHERN STILLWATER-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-JUDITH GAP-BEARTOOTH FOOTHILLS-
917 AM MST TUE JAN 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR VISIBILITIES
  CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL CONTINUE OVER THE AREA TODAY INTO TONIGHT.
  THE HEAVIEST SNOWFALL IS EXPECTED THROUGH MIDDAY. 

* SNOW ACCUMULATION...5 TO 10 INCHES. 

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ029-035-038-039-056>058-WYZ099-011300-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170201T1300Z/
MUSSELSHELL-YELLOWSTONE-SOUTHERN BIG HORN-EASTERN CARBON-
RED LODGE FOOTHILLS-NORTHERN BIG HORN-SOUTHERN ROSEBUD-
SHERIDAN FOOTHILLS-
917 AM MST TUE JAN 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR VISIBILITIES
  CAUSING DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL CONTINUE OVER THE AREA TODAY INTO TONIGHT.
  THE HEAVIEST SNOWFALL IS EXPECTED THROUGH MIDDAY.

* SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE AT TIMES THROGH AT LEAST THURSDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY CAN BE ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS LIGHT SNOW...BLOWING SNOW...SLEET...
FREEZING RAIN...AND EXTREME WIND CHILLS.

&&

$$

WYZ098-011630-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170202T0100Z/
NORTHEAST BIGHORN MOUNTAINS-
917 AM MST TUE JAN 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST
WEDNESDAY...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THEMOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH WEDNESDAY.

* SNOW ACCUMULATION...8 TO 12 INCHES THROUGH THE PERIOD.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY CAN BE ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS LIGHT SNOW...BLOWING SNOW...SLEET...
FREEZING RAIN...AND EXTREME WIND CHILLS.

&&

$$

HTTP://WEATHER.GOV/BILLINGS
654 
WWUS45 KBYZ 312034
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
134 PM MST TUE JAN 31 2017

MTZ038-039-056-WYZ099-011300-
/O.UPG.KBYZ.WW.Y.0005.000000T0000Z-170201T1300Z/
/O.EXA.KBYZ.WS.W.0002.000000T0000Z-170201T1300Z/
SOUTHERN BIG HORN-EASTERN CARBON-RED LODGE FOOTHILLS-
SHERIDAN FOOTHILLS-
134 PM MST TUE JAN 31 2017

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
STORM WARNING WHICH IS IN EFFECT UNTIL 6 AM MST WEDNESDAY. THIS 
REPLACES THE WINTER WEATHER ADVISORY THAT WAS PREVIOUSLY IN 
EFFECT. 

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR VISIBILITIES
  CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL CONTINUE OVER THE AREA INTO TONIGHT. 

* SNOW ACCUMULATION...5 TO 9 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS. 


&&

$$

MTZ067-068-012045-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
134 PM MST TUE JAN 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST
WEDNESDAY...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH WEDNESDAY. 
  SNOW MAY BE HEAVY AT TIMES.

* SNOW ACCUMULATION...1 TO 2 FEET OF SNOW IS POSSIBLE THROUGH 
  THE PERIOD...HEAVIEST ON WEST AND SOUTH ASPECTS.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SIGNIFICANT AMOUNT OF SNOW IS OCCURRING. STRONG WINDS ARE ALSO 
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ028-034-040>042-063>066-011300-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170201T1300Z/
SOUTHERN WHEATLAND-NORTHERN STILLWATER-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-
INCLUDING THE LOCATIONS OF LIVINGSTON AND SPRINGDALE
134 PM MST TUE JAN 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR 
  VISIBILITIES CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL CONTINUE OVER THE AREA INTO TONIGHT. 

* SNOW ACCUMULATION...5 TO 10 INCHES. LOCALLY HEAVIER AMOUNTS
  POSSIBLE. 

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS. 

&&

$$

MTZ029-035-057-058-011300-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170201T1300Z/
MUSSELSHELL-YELLOWSTONE-NORTHERN BIG HORN-SOUTHERN ROSEBUD-
134 PM MST TUE JAN 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR 
  VISIBILITIES CAUSING DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL CONTINUE OVER THE AREA TODAY INTO TONIGHT. 

* SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS. 

&&

$$

WYZ098-012045-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170202T0100Z/
NORTHEAST BIGHORN MOUNTAINS-
134 PM MST TUE JAN 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST
WEDNESDAY...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH WEDNESDAY.

* SNOW ACCUMULATION...6 TO 12 INCHES THROUGH THE PERIOD.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT.


&&

$$

HTTP://WEATHER.GOV/BILLINGS
715 
WWUS45 KBYZ 010351
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
851 PM MST TUE JAN 31 2017

MTZ067-068-020100-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
851 PM MST TUE JAN 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST
WEDNESDAY...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH WEDNESDAY. 
  SNOW MAY BE HEAVY AT TIMES.

* SNOW ACCUMULATION...1 TO 2 FEET OF SNOW IS POSSIBLE THROUGH 
  THE PERIOD...HEAVIEST ON WEST AND SOUTH ASPECTS.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SIGNIFICANT AMOUNT OF SNOW IS OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ028-034-038>042-056-063>066-WYZ099-011300-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170201T1300Z/
SOUTHERN WHEATLAND-NORTHERN STILLWATER-SOUTHERN BIG HORN-
EASTERN CARBON-NORTHERN PARK-NORTHERN SWEET GRASS-GOLDEN VALLEY-
RED LODGE FOOTHILLS-JUDITH GAP-PARADISE VALLEY-LIVINGSTON AREA-
BEARTOOTH FOOTHILLS-SHERIDAN FOOTHILLS-
INCLUDING THE LOCATIONS OF LIVINGSTON AND SPRINGDALE
851 PM MST TUE JAN 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR 
  VISIBILITIES CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL CONTINUE OVER THE AREA THROUGH TONIGHT.

* SNOW ACCUMULATION...5 TO 10 INCHES. LOCALLY HEAVIER AMOUNTS 
  POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS.

&&

$$

MTZ029-035-057-058-011300-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170201T1300Z/
MUSSELSHELL-YELLOWSTONE-NORTHERN BIG HORN-SOUTHERN ROSEBUD-
851 PM MST TUE JAN 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
WEDNESDAY...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR 
  VISIBILITIES CAUSING DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL CONTINUE OVER THE AREA THROUGH TONIGHT.

* SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER 
  ACCUMULATIONS POSSIBLE.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS.

&&

$$

WYZ098-020100-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170202T0100Z/
NORTHEAST BIGHORN MOUNTAINS-
851 PM MST TUE JAN 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST
WEDNESDAY...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH WEDNESDAY.

* SNOW ACCUMULATION...6 TO 12 INCHES THROUGH THE PERIOD.

* AFTER A BRIEF BREAK WEDNESDAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT.

&&

$$

HTTP://WEATHER.GOV/BILLINGS
832 
WWUS45 KBYZ 011007
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
307 AM MST WED FEB 1 2017

MTZ034-038>041-056-064>066-WYZ099-011800-
/O.EXT.KBYZ.WS.W.0002.000000T0000Z-170201T1800Z/
NORTHERN STILLWATER-SOUTHERN BIG HORN-EASTERN CARBON-
NORTHERN PARK-NORTHERN SWEET GRASS-RED LODGE FOOTHILLS-
PARADISE VALLEY-LIVINGSTON AREA-BEARTOOTH FOOTHILLS-
SHERIDAN FOOTHILLS-
INCLUDING THE LOCATIONS OF LIVINGSTON AND SPRINGDALE
307 AM MST WED FEB 1 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 AM MST THIS
MORNING...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR 
  VISIBILITIES CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL GRADUALLY DIMINISH OVER THE AREA THIS MORNING.

* TOTAL SNOW ACCUMULATION...5 TO 10 INCHES. LOCALLY HEAVIER 
  AMOUNTS POSSIBLE.

* AFTER A BRIEF BREAK TODAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS.

&&

$$

MTZ067-068-020100-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
307 AM MST WED FEB 1 2017

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

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE TODAY. SNOW MAY BE HEAVY
  AT TIMES.

* TOTAL SNOW ACCUMULATION...1 TO 2 FEET OF SNOW IS POSSIBLE 
  THROUGH THE PERIOD...HEAVIEST ON WEST AND SOUTH ASPECTS.

* AFTER A BRIEF BREAK LATER TODAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE INTO THE WEEKEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SIGNIFICANT AMOUNT OF SNOW IS OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ028-042-063-011300-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170201T1300Z/
SOUTHERN WHEATLAND-GOLDEN VALLEY-JUDITH GAP-
307 AM MST WED FEB 1 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST EARLY
THIS MORNING...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR 
  VISIBILITIES CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL GRADUALLY DIMINISH THIS MORNING.

* TOTAL SNOW ACCUMULATION...5 TO 10 INCHES. LOCALLY HEAVIER 
  AMOUNTS POSSIBLE.

* AFTER A BRIEF BREAK TODAY...PERIODS OF SNOW ARE POSSIBLE AT 
  TIMES THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS.

&&

$$

MTZ029-035-057-058-011300-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170201T1300Z/
MUSSELSHELL-YELLOWSTONE-NORTHERN BIG HORN-SOUTHERN ROSEBUD-
307 AM MST WED FEB 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST EARLY
THIS MORNING...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR 
  VISIBILITIES CAUSING DIFFICULT TRAVEL CONDITIONS. 

* TIMING...SNOW WILL GRADUALLY DIMINISH THIS MORNING.

* TOTAL SNOW ACCUMULATION...3 TO 6 INCHES. LOCALLY HEAVIER AMOUNTS 
  POSSIBLE.

* AFTER A BRIEF BREAK TODAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS.

&&

$$

WYZ098-020100-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170202T0100Z/
NORTHEAST BIGHORN MOUNTAINS-
307 AM MST WED FEB 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST THIS
EVENING...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE TODAY.

* TOTAL SNOW ACCUMULATION...6 TO 12 INCHES. LOCALLY HEAVIER
  AMOUNTS POSSIBLE.

* AFTER A BRIEF BREAK LATER TODAY...PERIODS OF SNOW ARE LIKELY TO
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT.

&&

$$

HTTP://WEATHER.GOV/BILLINGS
545 
WWUS45 KBYZ 011255
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
555 AM MST WED FEB 1 2017

MTZ028-042-063-011400-
/O.EXP.KBYZ.WS.W.0002.000000T0000Z-170201T1300Z/
SOUTHERN WHEATLAND-GOLDEN VALLEY-JUDITH GAP-
555 AM MST WED FEB 1 2017

...WINTER STORM WARNING WILL EXPIRE AT 6 AM MST EARLY THIS
MORNING...

SNOW WILL CONTINUE TO DIMINISH THIS MORNING WITH ONLY MINOR 
ADDITIONAL ACCUMULATIONS EXPECTED.

$$

MTZ029-035-057-058-011400-
/O.EXP.KBYZ.WW.Y.0005.000000T0000Z-170201T1300Z/
MUSSELSHELL-YELLOWSTONE-NORTHERN BIG HORN-SOUTHERN ROSEBUD-
555 AM MST WED FEB 1 2017

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MST EARLY THIS
MORNING...

SNOW WILL GRADUALLY DIMINISH THROUGH THE MORNING. AN INCH OR LESS
OF ADDITIONAL SNOW ACCUMULATION IS EXPECTED.

$$

MTZ067-068-020100-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
555 AM MST WED FEB 1 2017

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

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE TODAY. SNOW MAY BE 
  HEAVY AT TIMES. 

* TOTAL SNOW ACCUMULATION...1 TO 2 FEET OF SNOW IS POSSIBLE 
  THROUGH THE PERIOD...HEAVIEST ON WEST AND SOUTH ASPECTS.

* AFTER A BRIEF BREAK LATER TODAY...PERIODS OF SNOW ARE LIKELY 
  TO CONTINUE INTO THE WEEKEND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SIGNIFICANT AMOUNT OF SNOW IS OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ034-038>041-056-064>066-WYZ099-011800-
/O.CON.KBYZ.WS.W.0002.000000T0000Z-170201T1800Z/
NORTHERN STILLWATER-SOUTHERN BIG HORN-EASTERN CARBON-
NORTHERN PARK-NORTHERN SWEET GRASS-RED LODGE FOOTHILLS-
PARADISE VALLEY-LIVINGSTON AREA-BEARTOOTH FOOTHILLS-
SHERIDAN FOOTHILLS-
INCLUDING THE LOCATIONS OF LIVINGSTON AND SPRINGDALE
555 AM MST WED FEB 1 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS
MORNING...

* IMPACTS...SNOW PACKED ROADS WITH DRIFTING AND POOR 
  VISIBILITIES CAUSING HAZARDOUS TRAVEL CONDITIONS. 

* TIMING...SNOW WILL GRADUALLY DIMINISH OVER THE AREA THIS
  MORNING.

* TOTAL SNOW ACCUMULATION...5 TO 10 INCHES. LOCALLY HEAVIER 
  AMOUNTS POSSIBLE.

* AFTER A BRIEF BREAK TODAY...PERIODS OF SNOW ARE LIKELY TO 
  CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE CHECK ROAD REPORTS AND FORECASTS BEFORE TRAVEL. DRIVE WITH
CAUTION AND ALLOW EXTRA TIME TO REACH DESTINATIONS.

&&

$$

WYZ098-020100-
/O.CON.KBYZ.WW.Y.0005.000000T0000Z-170202T0100Z/
NORTHEAST BIGHORN MOUNTAINS-
555 AM MST WED FEB 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST THIS
EVENING...

* IMPACTS...HAZARDOUS CONDITIONS FOR TRAVEL AND RECREATION IN 
  THE MOUNTAINS. 

* TIMING...PERIODS OF SNOW WILL CONTINUE TODAY.

* TOTAL SNOW ACCUMULATION...6 TO 12 INCHES. LOCALLY HEAVIER 
  AMOUNTS POSSIBLE.

* AFTER A BRIEF BREAK LATER TODAY...PERIODS OF SNOW ARE LIKELY 
  TO CONTINUE AT TIMES THROUGH AT LEAST THURSDAY NIGHT. 

&&

$$

HTTP://WEATHER.GOV/BILLINGS
868 
WWUS45 KBYZ 011719
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
1019 AM MST WED FEB 1 2017

MTZ034-038>041-056-064>066-WYZ099-011830-
/O.CAN.KBYZ.WS.W.0002.000000T0000Z-170201T1800Z/
NORTHERN STILLWATER-SOUTHERN BIG HORN-EASTERN CARBON-
NORTHERN PARK-NORTHERN SWEET GRASS-RED LODGE FOOTHILLS-
PARADISE VALLEY-LIVINGSTON AREA-BEARTOOTH FOOTHILLS-
SHERIDAN FOOTHILLS-
1019 AM MST WED FEB 1 2017

...WINTER STORM WARNING IS CANCELLED...

SNOW HAS DECREASED ACROSS THE AREA. SOME AREAS MAY STILL SEE SOME
FLURRIES OR LIGHT SNOW, BUT THIS SHOULD NOT RESULT IN ANY
ADDITIONAL IMPACT. 

$$

MTZ067-068-011830-
/O.CAN.KBYZ.WS.W.0002.000000T0000Z-170202T0100Z/
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-
1019 AM MST WED FEB 1 2017

...WINTER STORM WARNING IS CANCELLED...

SNOW HAS DECREASED ACROSS THE AREA. SOME AREAS MAY STILL SEE SOME
FLURRIES OR LIGHT SNOW, BUT THIS SHOULD NOT RESULT IN ANY
ADDITIONAL IMPACT. 

$$

WYZ098-011830-
/O.CAN.KBYZ.WW.Y.0005.000000T0000Z-170202T0100Z/
NORTHEAST BIGHORN MOUNTAINS-
1019 AM MST WED FEB 1 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

SNOW HAS DECREASED ACROSS THE AREA. SOME AREAS MAY STILL SEE SOME
FLURRIES OR LIGHT SNOW, BUT THIS SHOULD NOT RESULT IN ANY
ADDITIONAL IMPACT. 

$$

HTTP://WEATHER.GOV/BILLINGS

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 Billings, MT wrote its last area forecast discussion before this winter storm warning went out at Jan 29, 9:11 PM MST, 6 hours 39 minutes earlier.

Area forecast discussion, Jan 29, 9:11 PM MST, 6 hours 39 minutes before
Area Forecast Discussion
National Weather Service Billings MT
911 PM MST Sun Jan 29 2017

.UPDATE...

No update to inherited forecast this evening. Gusty winds continue
in western areas tonight...but should taper off by late Monday
morning. AAG

&&

.SHORT TERM...valid for Mon and Tue...

An active weather period is coming up for the short-term. Still
have the Wind Advisory for the gap flow areas, and the High Wind
Warning for Big Timber in effect until noon MST Monday. Winds have
not met criteria thus far this afternoon, but local guidance
shows a good chance of hitting it tonight as the 700 mb flow turns
more westerly, which should lead to better gap flow. The surface
pressure gradient will not be ideal for gap flow which is a
concern, but will continue to favor Big Timber. So enough concern
remains to leave the highlights alone.

Another wind concern has developed and that is an anomalously
strong 850 mb jet that will be over E MT tonight. The jet will be
on the order of 50 to 70 kt and will continue into Mon. morning.
Soundings over the E did show subsidence which favors high winds
in the plains, however, the pressure rises are very weak which
works against high winds. Thus will keep wind just below criteria
out E and pass concerns along to the next shift.

Otherwise, the flow aloft turns flat NW tonight as a Pacific jet
noses SE from Canada. The airmass remains dry through Monday,
with the exception of the SW mountains which could have a few snow
showers. A cold front will move S during Mon. helping to set up a
convergence zone over the SW part of the area. The arrival of the
front will put an end to the wind threat over the gap areas and
Big Timber. The Pacific jet will continue to ride SE through the
area through Tue. night. Flat NW flow aloft will continue with
limited dynamics, except the ECMWF does try to drive a shortwave
into the region Tue. night. Colder air will surge into the area
Mon. night and a Pacific moisture flow will move into the region
and persist into Tuesday. The models fall out of agreement Tue.
afternoon as the ECMWF pushes the moisture flow S into WY, while
the GFS/WRF keep the moisture in place over S MT/N WY. These
trends continue Tue. night.

Snow will develop from W to E across the area Mon. night,
supported by the moisture, the stationary front/convergence zone
along the MT/WY border, isentropic lift, and low-level upslope
flow. QPF was similar between the models until Tue. afternoon. Did
lower PoPs Tue. afternoon through Tue. night due to increasing
model uncertainty. The combination of QPF and snow ratios
necessitates the issuance of a Winter Storm Watch through Tue.
night. Expect highest amounts in the mountains...on the order of
1-2 ft...with eventual Warning amounts over much of the central
and western zones. The Watch will not include areas E of
Yellowstone and Big Horn Counties. It also will not include
Sheridan County. Still looking for highs in the 40s on Mon. and in
the 20s on Tuesday. Arthur

.LONG TERM...valid for Wed...Thu...Fri...Sat...Sun...

While general 500mb flow patterns are similar in the extended the
details are very important because positioning of moisture and
depth of cold air will determine positioning of continued snow
later in the week. ECMWF is the most northwesterly flow wise of
the global models Wednesday and Thursday which shifts the
moisture southward and deepens the cold air more than GFS. This
would place favored zone for mid to late week snowfall into
Wyoming as opposed to southern Montana so have lowered pops a bit
as ECMWF is quite dry during that period so have depicted a not as
snowy a solution. Models agree that an offshore low fills and
translates eastward Friday into Saturday deepening the moisture
and bringing the best baroclinic band northward into southern
Montana so have not made many changes in the later part of the
extended. GFS ensemble forecasts show operational run higher than
the average temperatures so trended a bit cooler which also
supports the ECMWF solution. borsum
&&

.AVIATION...

Strong west to southwest winds will continue from Livingston to
Big Timber tonight. The strongest winds will be at Livingston with
gusts of 50kts. Billings will continue to see sustained winds of
20kts with gusts to 30kts overnight. Areas of LLWS will be present
east of Billings, from Miles City to Sheridan eastward, with
strong winds just off the surface. This wind shear will continue
into Monday morning. TWH
&&

.PRELIMINARY POINT TEMP/POPS...

    Mon     Tue     Wed     Thu     Fri     Sat     Sun
-----------------------------------------------------------
BIL 031/044 022/027 012/018 005/015 002/022 012/034 016/031
    00/N    68/S    66/S    44/S    43/S    22/S    22/S
LVM 030/044 025/033 012/021 006/019 007/034 023/040 024/040
    00/N    78/S    67/S    45/S    53/S    32/S    22/S
HDN 027/040 018/026 008/019 002/016 903/020 006/029 012/030
    00/U    57/S    56/S    43/S    43/S    22/S    22/S
MLS 029/037 018/025 007/017 001/014 901/018 005/026 009/024
    00/N    23/S    23/S    33/S    31/B    11/B    22/S
4BQ 029/040 016/026 005/018 901/016 903/024 007/029 009/028
    00/N    35/S    34/S    43/S    42/S    10/B    21/E
BHK 028/036 016/024 003/013 903/011 904/016 004/023 008/021
    00/N    11/E    11/E    12/S    31/B    10/B    21/E
SHR 027/042 017/026 008/019 002/017 003/027 012/034 014/033
    00/U    35/S    55/S    33/S    32/S    12/S    22/S

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...Winter Storm Watch in effect from Monday afternoon through
      late Tuesday night FOR ZONES 28-40-41-56-63>68.
     Winter Storm Watch in effect from Monday evening through late
      Tuesday night FOR ZONES 29-34-35-38-39-42-57.
     High Wind Warning in effect until noon MST Monday FOR ZONE
      41.
     Wind Advisory in effect until noon MST Monday FOR ZONES
      65-66.
WY...None.

&&

weather.gov/billings
Hazardous weather outlook, Jan 29, 2:42 PM MST, 13 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
242 PM MST SUN JAN 29 2017

MTZ028>042-056>058-063>068-WYZ098-099-292245-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-NORTHEAST BIGHORN MOUNTAINS-SHERIDAN FOOTHILLS-
242 PM MST SUN JAN 29 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.

* POTENTIAL IMPACTS: SIGNIFICANT SNOW ACCUMULATIONS POSSIBLE...RESULTING
  IN DIFFICULT TRAVEL CONDITIONS. TEMPERATURES 10 TO 20 DEGREES
  BELOW AVERAGE.

* TIMING: MONDAY NIGHT THROUGH WEDNESDAY.

* POTENTIAL SNOW ACCUMULATIONS: 6 TO 10 INCHES WEST...3 TO 6 INCHES
  CENTRAL...1 TO 3 INCHES EAST. OVER A FOOT POSSIBLE IN THE
  MOUNTAINS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HAZARDOUS WEATHER OUTLOOK IS ISSUED WHEN HAZARDOUS WEATHER COULD
IMPACT THE REGION WITHIN THE NEXT WEEK. BE SURE TO STAY TUNED FOR
FUTURE UPDATES AS LOCATIONS, TIMING, AND IMPACTS COULD CHANGE.
BEGIN PREPARATIONS TO MITIGATE ANY IMPACTS THAT COULD RESULT FROM
THE HAZARDOUS WEATHER.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 30, 3:50 AM MSTWinter Weather AdvisoryBYZBig Horn, Carbon, Musselshell, Park, Rosebud, Stillwater and 1 more54 hr

Nearby

Winter Storm Warnings in Montana, 2017Winter Storm Warnings in Wyoming, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.