Alert archive / Montana / Winter Storm Warnings in 2005

Winter Storm Warning 5, NWS Great Falls, MT

December 5, 2005

NWS Great Falls, MT issued this winter storm warning at Dec 5, 2005, 9:58 AM MST. It took effect at Dec 5, 2005, 11:00 AM MST. It was in force for 17 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
Dec 5, 2005, 9:58 AM MST (16:58 UTC)
In effect from
Dec 5, 2005, 11:00 AM MST
Expired
Dec 6, 2005, 3:53 AM MST
In force
17 hr
Issued by
NWS Great Falls, MT

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS45 KTFX 051658
WSWTFX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
958 AM MST MON DEC 5 2005

.A WEATHER SYSTEM FROM CANADA WILL SPREAD SOUTH OVER MONTANA
TONIGHT INTO TUESDAY. THE ASSOCIATED COLD FRONT WILL REACH THE
U.S. BORDER BY NOON TODAY AND WILL SPREAD SOUTH TO CENTRAL
MONTANA BY LATE THIS AFTERNOON. THE COLD FRONT WILL SPREAD
THROUGH THE REMAINDER OF MONTANA EAST OF THE CONTINENTAL DIVIDE
BY MIDNIGHT.

MTZ012-013-050-051-060100-
/O.UPG.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
/O.NEW.KTFX.WS.W.0005.051205T1800Z-051206T1200Z/
/O.CON.KTFX.WC.Y.0001.051206T0000Z-051206T1800Z/
CASCADE-CHOUTEAU-JUDITH BASIN-FERGUS-
INCLUDING THE CITIES OF...GREAT FALLS...FORT BENTON...STANFORD...
LEWISTOWN
958 AM MST MON DEC 5 2005

...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO 11 AM MST TUESDAY...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST TUESDAY. THE
SNOW AND BLOWING SNOW ADVISORY IS NO LONGER IN EFFECT. A WIND
CHILL ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM
MST TUESDAY.

AREAS OF SNOW HAVE DEVELOPED THIS MORNING AND WILL CONTINUE
THROUGH THE DAY. SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A
STRONG ARCTIC COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF
20 TO 30 MPH WITH GUSTS TO 40 MPH COMBINED WITH SNOW WILL PRODUCE
BLOWING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE
AND AT TIMES VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE.
SNOW ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED OVER THE PLAINS
WITH 8 TO 16 INCHES EXPECTED ALONG NORTH FACING SLOPES AND IN THE
MOUNTAINS.

ALSO THE COMBINATION OF COLD AIR AND GUSTY WINDS WILL PRODUCE WIND
CHILLS OF 10 TO 30 DEGREES BELOW ZERO TONIGHT. THESE COLD WIND
CHILLS WILL CONTINUE INTO TUESDAY MORNING.

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

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. 
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

$$

MTZ054-060100-
/O.NEW.KTFX.WS.W.0005.051205T1800Z-051206T1200Z/
MEAGHER-
INCLUDING THE CITY OF...WHITE SULPHUR SPRINGS
958 AM MST MON DEC 5 2005

...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST TUESDAY...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST TUESDAY. 

AREAS OF SNOW HAVE DEVELOPED THIS MORNING AND WILL CONTINUE
THROUGH THE DAY. SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A
STRONG ARCTIC COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF
20 TO 30 MPH WITH GUSTS TO 40 MPH COMBINED WITH SNOW WILL PRODUCE
BLOWING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE
AND AT TIMES VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE.
SNOW ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED IN THE VALLEYS
WITH 8 TO 16 INCHES EXPECTED IN THE MOUNTAINS.

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

$$

MTZ008-015-052-053-055-060100-
/O.EXB.KTFX.SB.Y.0004.051206T0000Z-051206T1200Z/
BEAVERHEAD-MADISON-JEFFERSON-BROADWATER-GALLATIN-
INCLUDING THE CITIES OF...DILLON...ENNIS...BOULDER...TOWNSEND...
BOZEMAN...WEST YELLOWSTONE
958 AM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 AM MST TUESDAY...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A SNOW AND
BLOWING SNOW ADVISORY...WHICH IS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 AM MST TUESDAY. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A STRONG ARCTIC
COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF 15 TO 30 MPH
WITH GUSTS TO 40 MPH COMBINED WITH SNOW WILL PRODUCE BLOWING SNOW.
VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE AND AT TIMES
VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE. SNOW
ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED IN THE VALLEYS WITH 4
TO 8 INCHES EXPECTED IN THE MOUNTAINS.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

MTZ009>011-044>049-060100-
/O.CON.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
/O.CON.KTFX.WC.Y.0001.051206T0000Z-051206T1800Z/
NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-TOOLE-LIBERTY-
EASTERN PONDERA-BLAINE-SOUTHERN ROCKY MOUNTAIN FRONT-
EASTERN TETON-
INCLUDING THE CITIES OF...BROWNING...CUT BANK...HAVRE...SHELBY...
CHESTER...CONRAD...CHINOOK...CHOTEAU...FAIRFIELD
958 AM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO 11 AM MST TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY. A WIND CHILL ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM MST TUESDAY. 

WEST WINDS OF 15 TO 30 MPH WITH GUSTS UP TO 45 MPH HAVE DEVELOPED
THIS MORNING ALONG THE ROCKY MOUNTAINS FRONT. WINDS WILL SHIFT TO
THE NORTH AT 20 TO 30 MPH WITH GUSTS TO 40 MPH THIS AFTERNOON
AS AN ARCTIC COLD FRONT SWEEPS THROUGH THE AREA. THE STRONG WINDS
COMBINED WITH SNOW WILL PRODUCE BLOWING SNOW. VISIBILITY WILL BE
REDUCED TO LESS THAN ONE MILE AND AT TIMES VISIBILITY WILL DROP
BELOW ONE QUARTER OF A MILE. SNOW ACCUMULATIONS OF UP TO 3 INCHES
ARE EXPECTED ACROSS THE PLAINS WITH 3 TO 6 INCHES EXPECTED IN THE
MOUNTAINS.

ALSO THE COMBINATION OF COLD AIR AND GUSTY WINDS WILL PRODUCE WIND
CHILLS OF 10 TO 30 DEGREES BELOW ZERO TONIGHT. THESE COLD WIND
CHILLS WILL CONTINUE INTO TUESDAY MORNING.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

$$

MTZ014-060100-
/O.CON.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
CENTRAL AND SOUTHERN LEWIS AND CLARK-
INCLUDING THE CITY OF...HELENA
958 AM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY. 

WEST WINDS OF 15 TO 30 MPH WITH GUSTS UP TO 45 MPH HAVE DEVELOPED
THIS MORNING. WINDS WILL SHIFT TO THE NORTH AT 20 TO 30 MPH WITH
GUSTS TO 40 MPH LATE THIS AFTERNOON AS AN ARCTIC COLD FRONT SWEEPS
THROUGH THE AREA. THE STRONG WINDS COMBINED WITH SNOW WILL PRODUCE
BLOWING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE AND
AT TIMES VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE. SNOW
ACCUMULATIONS OF UP TO 3 INCHES ARE EXPECTED ACROSS THE PLAINS
WITH 3 TO 6 INCHES EXPECTED IN THE MOUNTAINS.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$
4 follow-up statements
000 
WWUS45 KTFX 052122
WSWTFX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
222 PM MST MON DEC 5 2005

.A WEATHER SYSTEM FROM CANADA WILL SPREAD SOUTH OVER MONTANA
TONIGHT INTO TUESDAY. THE ASSOCIATED COLD FRONT REACHED THE U.S.
BORDER AROUND NOON TODAY AND IS MOVING SOUTH INTO CENTRAL MONTANA.
THE COLD FRONT WILL PUSH THROUGH THE REMAINDER OF MONTANA SOUTHERN
AND EASTERN BY MIDNIGHT. WIDESPREAD SNOW AND STRONG WINDS CAN BE
EXPECT WITH THE FRONT. 

MTZ012-013-050-051-060500-
/O.CON.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
/O.CON.KTFX.WC.Y.0001.051206T0000Z-051206T1800Z/
CASCADE-CHOUTEAU-JUDITH BASIN-FERGUS-
INCLUDING THE CITIES OF...GREAT FALLS...FORT BENTON...STANFORD...
LEWISTOWN
222 PM MST MON DEC 5 2005

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO 11 AM MST TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST TUESDAY.
A WIND CHILL ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO 11 AM MST TUESDAY. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A STRONG ARCTIC
COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF 20 TO 30 MPH
WITH GUSTS TO 45 MPH COMBINED WITH SNOW WILL PRODUCE BLOWING SNOW.
VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE AND AT TIMES
VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE. SNOW
ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED OVER THE PLAINS WITH 8
TO 16 INCHES EXPECTED ALONG NORTH FACING SLOPES AND IN THE
MOUNTAINS.

ALSO THE COMBINATION OF COLD AIR AND GUSTY WINDS WILL PRODUCE
WIND CHILLS OF 10 TO 30 DEGREES BELOW ZERO TONIGHT. THESE COLD
WIND CHILLS WILL CONTINUE INTO TUESDAY MORNING.

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

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

$$

MTZ054-060500-
/O.CON.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
MEAGHER-
INCLUDING THE CITY OF...WHITE SULPHUR SPRINGS
222 PM MST MON DEC 5 2005

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST TUESDAY. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A STRONG ARCTIC
COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF 20 TO 30 MPH
WITH GUSTS TO 40 MPH COMBINED WITH SNOW WILL PRODUCE BLOWING SNOW.
VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE AND AT TIMES
VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE. SNOW
ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED IN THE VALLEYS WITH 8
TO 16 INCHES EXPECTED IN THE MOUNTAINS.

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

$$

MTZ009>011-044>049-060500-
/O.CON.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
/O.CON.KTFX.WC.Y.0001.051206T0000Z-051206T1800Z/
NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-TOOLE-LIBERTY-
EASTERN PONDERA-BLAINE-SOUTHERN ROCKY MOUNTAIN FRONT-
EASTERN TETON-
INCLUDING THE CITIES OF...BROWNING...CUT BANK...HAVRE...SHELBY...
CHESTER...CONRAD...CHINOOK...CHOTEAU...FAIRFIELD
222 PM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO 11 AM MST TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY. A WIND CHILL ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM MST TUESDAY. 

NORTH WINDS OF 25 TO 35 MPH WITH GUSTS TO 50 MPH HAVE DEVELOPED
THIS AFTERNOON. THE STRONG WINDS COMBINED WITH SNOW WILL PRODUCE
BLOWING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE AND
AT TIMES VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE. SNOW
ACCUMULATIONS OF UP TO 3 INCHES ARE EXPECTED ACROSS THE PLAINS
WITH 3 TO 6 INCHES EXPECTED IN THE MOUNTAINS.

ALSO THE COMBINATION OF COLD AIR AND GUSTY WINDS WILL PRODUCE
WIND CHILLS OF 10 TO 30 DEGREES BELOW ZERO TONIGHT. THESE COLD
WIND CHILLS WILL CONTINUE INTO TUESDAY MORNING.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

$$

MTZ014-060500-
/O.CON.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
CENTRAL AND SOUTHERN LEWIS AND CLARK-
INCLUDING THE CITY OF...HELENA
222 PM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY. 

WEST WINDS OF 15 TO 30 MPH WITH GUSTS UP TO 45 MPH WILL SHIFT TO
THE NORTH AT 20 TO 30 MPH WITH GUSTS TO 40 MPH LATE THIS AFTERNOON
AS AN ARCTIC COLD FRONT SWEEPS THROUGH THE AREA. THE STRONG WINDS
COMBINED WITH SNOW WILL PRODUCE BLOWING SNOW. VISIBILITY WILL BE
REDUCED TO LESS THAN ONE MILE AND AT TIMES VISIBILITY WILL DROP
BELOW ONE QUARTER OF A MILE. SNOW ACCUMULATIONS OF UP TO 3 INCHES
ARE EXPECTED ACROSS THE PLAINS WITH 3 TO 6 INCHES EXPECTED IN THE
MOUNTAINS.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

MTZ008-015-052-053-055-060500-
/O.CON.KTFX.SB.Y.0004.051206T0000Z-051206T1200Z/
BEAVERHEAD-MADISON-JEFFERSON-BROADWATER-GALLATIN-
INCLUDING THE CITIES OF...DILLON...ENNIS...BOULDER...TOWNSEND...
BOZEMAN...WEST YELLOWSTONE
222 PM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 5 PM
THIS AFTERNOON TO 5 AM MST TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 AM MST TUESDAY. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A STRONG ARCTIC
COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF 15 TO 30 MPH
WITH GUSTS TO 40 MPH COMBINED WITH SNOW WILL PRODUCE BLOWING
SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE AND AT
TIMES VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE. SNOW
ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED IN THE VALLEYS WITH
4 TO 8 INCHES EXPECTED IN THE MOUNTAINS.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$
000 
WWUS45 KTFX 052321
WSWTFX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
421 PM MST MON DEC 5 2005

.A WEATHER SYSTEM FROM CANADA WILL SPREAD SOUTH OVER MONTANA
TONIGHT INTO TUESDAY. THE ASSOCIATED COLD FRONT REACHED THE U.S.
BORDER AROUND NOON TODAY AND IS MOVING SOUTH INTO CENTRAL
MONTANA. THE COLD FRONT WILL PUSH THROUGH THE REMAINDER OF
MONTANA SOUTHERN AND EASTERN BY MIDNIGHT. WIDESPREAD SNOW AND
STRONG WINDS CAN BE EXPECT WITH THE FRONT.

MTZ052-053-060730-
/O.UPG.KTFX.SB.Y.0004.051206T0000Z-051206T1200Z/
/O.EXA.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
JEFFERSON-BROADWATER-
INCLUDING THE CITIES OF...BOULDER...TOWNSEND
421 PM MST MON DEC 5 2005

...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST TUESDAY...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST TUESDAY. THE
SNOW AND BLOWING SNOW ADVISORY IS NO LONGER IN EFFECT. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING IN THE HELENA
VALLEY...AS A STRONG ARCTIC COLD FRONT SWEEPS THROUGH THE AREA.
NORTH WINDS OF 25 TO 40 MPH...WITH GUSTS TO 55 MPH...COMBINED WITH
SNOW WILL PRODUCE WHITEOUT CONDITIONS AT TIMES THIS EVENING.
VISIBILITY WILL BE REDUCED TO LESS THAN ONE QUARTER OF A MILE
BETWEEN 5 PM AND 8 PM THIS EVENING. EXPECT SNOW ACCUMULATIONS OF 2
TO 4 INCHES IN THE VALLEYS...WITH 4 TO 8 INCHES EXPECTED IN THE
MOUNTAINS.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED. STRONG WINDS WILL ALSO OCCUR. THIS WILL MAKE TRAVEL
IMPOSSIBLE AT TIMES THIS EVENING.

$$

MTZ014-060730-
/O.UPG.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
/O.EXA.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
CENTRAL AND SOUTHERN LEWIS AND CLARK-
INCLUDING THE CITY OF...HELENA
421 PM MST MON DEC 5 2005

...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST TUESDAY...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST TUESDAY. THE
SNOW AND BLOWING SNOW ADVISORY IS NO LONGER IN EFFECT. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING IN THE HELENA
VALLEY...AS A STRONG ARCTIC COLD FRONT SWEEPS THROUGH THE AREA.
NORTH WINDS OF 25 TO 40 MPH...WITH GUSTS TO 55 MPH...COMBINED WITH
SNOW WILL PRODUCE WHITEOUT CONDITIONS AT TIMES THIS EVENING.
VISIBILITY WILL BE REDUCED TO LESS THAN ONE QUARTER OF A MILE
BETWEEN 5 PM AND 8 PM THIS EVENING. EXPECT SNOW ACCUMULATIONS OF 2
TO 4 INCHES IN THE VALLEYS...WITH 4 TO 8 INCHES EXPECTED IN THE
MOUNTAINS.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED. STRONG WINDS WILL ALSO OCCUR. THIS WILL MAKE TRAVEL
IMPOSSIBLE AT TIMES THIS EVENING.

$$

MTZ012-013-050-051-060730-
/O.CON.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
/O.CON.KTFX.WC.Y.0001.051206T0000Z-051206T1800Z/
CASCADE-CHOUTEAU-JUDITH BASIN-FERGUS-
INCLUDING THE CITIES OF...GREAT FALLS...FORT BENTON...STANFORD...
LEWISTOWN
421 PM MST MON DEC 5 2005

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST TUESDAY.
A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A STRONG ARCTIC
COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF 25 TO
40 MPH...WITH GUSTS TO 50 MPH...COMBINED WITH SNOW WILL PRODUCE
BLOWING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE QUARTER
MILE BETWEEN 4 AND 8 PM THIS EVENING. EXPECT SNOW ACCUMULATIONS
OF 1 TO 3 INCHES OVER THE PLAINS...AND 8 TO 16 INCHES ALONG NORTH
FACING SLOPES OF THE MOUNTAINS.

ALSO THE COMBINATION OF COLD AIR AND GUSTY WINDS...WILL PRODUCE
WIND CHILLS OF 10 TO 30 DEGREES BELOW ZERO TONIGHT. THESE COLD
WIND CHILLS WILL CONTINUE INTO TUESDAY MORNING.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED. STRONG WINDS WILL ALSO OCCUR. THIS WILL MAKE TRAVEL
IMPOSSIBLE AT TIMES THIS EVENING.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

$$

MTZ054-060730-
/O.CON.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
MEAGHER-
INCLUDING THE CITY OF...WHITE SULPHUR SPRINGS
421 PM MST MON DEC 5 2005

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST TUESDAY. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A STRONG ARCTIC
COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF 25 TO
40 MPH...WITH GUSTS TO 50 MPH...COMBINED WITH SNOW WILL PRODUCE
BLOWING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE QUARTER
MILE BETWEEN 4 AND 8 PM THIS EVENING. EXPECT SNOW ACCUMULATIONS
OF 1 TO 3 INCHES IN THE VALLEYS...AND 8 TO 16 INCHES ALONG NORTH
FACING SLOPES OF THE MOUNTAINS.

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

$$

MTZ009>011-044>049-060730-
/O.CON.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
/O.CON.KTFX.WC.Y.0001.051206T0000Z-051206T1800Z/
NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-TOOLE-LIBERTY-
EASTERN PONDERA-BLAINE-SOUTHERN ROCKY MOUNTAIN FRONT-
EASTERN TETON-
INCLUDING THE CITIES OF...BROWNING...CUT BANK...HAVRE...SHELBY...
CHESTER...CONRAD...CHINOOK...CHOTEAU...FAIRFIELD
421 PM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY. A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
TUESDAY. 

NORTH WINDS OF 25 TO 35 MPH...WITH GUSTS TO 50 MPH...WILL CONTINUE
OVER THE ROCKY MOUNTAIN FRONT THIS EVENING. THE STRONG WINDS
COMBINED WITH SNOW WILL PRODUCE BLOWING SNOW. VISIBILITY WILL BE
REDUCED TO LESS THAN ONE QUARTER OF A MILE. EXPECT NEW SNOW
ACCUMULATIONS OF 1 TO 3 INCHES OVER THE PLAINS...AND UP TO 6
INCHES IN THE MOUNTAINS.

ALSO THE COMBINATION OF COLD AIR AND GUSTY WINDS WILL PRODUCE
WIND CHILLS OF 10 TO 30 DEGREES BELOW ZERO TONIGHT. THESE COLD
WIND CHILLS WILL CONTINUE INTO TUESDAY MORNING.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

$$

MTZ008-015-055-060730-
/O.CON.KTFX.SB.Y.0004.051206T0000Z-051206T1200Z/
BEAVERHEAD-MADISON-GALLATIN-
INCLUDING THE CITIES OF...DILLON...ENNIS...BOZEMAN...
WEST YELLOWSTONE
421 PM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY. 

SNOW WILL BECOME WIDESPREAD BY THIS EVENING AS A STRONG ARCTIC
COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF 15 TO 30 MPH
WITH GUSTS TO 40 MPH COMBINED WITH SNOW WILL PRODUCE BLOWING
SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE AND AT
TIMES VISIBILITY WILL DROP BELOW ONE QUARTER OF A MILE. SNOW
ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED IN THE VALLEYS WITH
4 TO 8 INCHES EXPECTED IN THE MOUNTAINS.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$
000 
WWUS45 KTFX 060459
WSWTFX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
959 PM MST MON DEC 5 2005

MTZ012-013-050-051-061200-
/O.CON.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
/O.CON.KTFX.WC.Y.0001.000000T0000Z-051206T1800Z/
CASCADE-CHOUTEAU-JUDITH BASIN-FERGUS-
INCLUDING THE CITIES OF...GREAT FALLS...FORT BENTON...STANFORD...
LEWISTOWN
959 PM MST MON DEC 5 2005

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST TUESDAY.
A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY. 

SNOW WILL CONTINUE TO FALL OVER CENTRAL MONTANA THROUGH TONIGHT.
EXPECT VISIBILITIES TO BE REDUCED TO ONE MILE AT TIMES THROUGH 3 AM.
NEW SNOW ACCUMULATIONS TONIGHT OF 1 TO 3 INCHES OVER POSSIBLE OVER
THE PLAINS...AND 4 TO 8 INCHES IN THE MOUNTAINS. THE HEAVIEST SNOW
WILL OCCUR IN THE MOUNTAINS NEAR AND AROUND LEWISTOWN.

ALSO THE COMBINATION OF COLD AIR AND WINDS...WILL PRODUCE WIND
CHILLS OF 15 TO 25 DEGREES BELOW ZERO TONIGHT. THESE COLD WIND
CHILLS WILL CONTINUE INTO TUESDAY MORNING.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND WINDS WILL
COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST
BITE...AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF
YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES.

$$

MTZ014-052>054-061200-
/O.CON.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
CENTRAL AND SOUTHERN LEWIS AND CLARK-JEFFERSON-BROADWATER-MEAGHER-
INCLUDING THE CITIES OF...HELENA...BOULDER...TOWNSEND...
WHITE SULPHUR SPRINGS
959 PM MST MON DEC 5 2005

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST TUESDAY. 

SNOW WILL CONTINUE TO FALL OVER SOUTHWEST MONTANA THROUGH
TONIGHT. EXPECT VISIBILITIES TO BE REDUCED TO ONE MILE AT TIMES
THROUGH 3 AM. NEW SNOW ACCUMULATIONS TONIGHT OF 1 TO 3 INCHES OVER
POSSIBLE IN THE VALLEYS...AND UP TO 6 INCHES IN THE MOUNTAINS.

$$

MTZ009>011-044>049-061200-
/O.CON.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
/O.CON.KTFX.WC.Y.0001.000000T0000Z-051206T1800Z/
NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-TOOLE-LIBERTY-
EASTERN PONDERA-BLAINE-SOUTHERN ROCKY MOUNTAIN FRONT-
EASTERN TETON-
INCLUDING THE CITIES OF...BROWNING...CUT BANK...HAVRE...SHELBY...
CHESTER...CONRAD...CHINOOK...CHOTEAU...FAIRFIELD
959 PM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY. A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
TUESDAY. 

LIGHT SNOW WILL CONTINUE OVER THE ROCKY MOUNTAIN FRONT AND FROM
CUT BANK TO HAVRE THROUGH MUCH OF TONIGHT. NEW SNOW ACCUMULATIONS
WILL GENERALLY BE LESS THAN ONE INCH. HOWEVER...GUSTY NORTH WINDS
GUSTING TO 30 MPH...WILL ALLOW FOR BLOWING AND DRIFTING OF THE SNOW
TO CONTINUE.

ALSO THE COMBINATION OF COLD AIR AND WINDS WILL PRODUCE WIND
CHILLS OF 15 TO 25 DEGREES BELOW ZERO TONIGHT. THESE COLD WIND
CHILLS WILL CONTINUE INTO TUESDAY MORNING.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND WINDS WILL
COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST
BITE...AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF
YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES.

$$

MTZ008-015-055-061200-
/O.CON.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
BEAVERHEAD-MADISON-GALLATIN-
INCLUDING THE CITIES OF...DILLON...ENNIS...BOZEMAN...
WEST YELLOWSTONE
959 PM MST MON DEC 5 2005

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY. 

SNOW WILL BECOME WIDESPREAD OVER SOUTHWEST MONTANA...AS A STRONG
ARCTIC COLD FRONT SWEEPS THROUGH THE AREA. NORTH WINDS OF 15 TO 30
MPH...WITH GUSTS TO 40 MPH...COMBINED WITH SNOW WILL PRODUCE
BLOWING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN ONE MILE AND
AT TIMES...WITH AREAS BELOW ONE QUARTER OF A MILE. SNOW
ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED IN THE VALLEYS...WITH
4 TO 6 INCHES EXPECTED IN THE MOUNTAINS.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED...DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$
000 
WWUS45 KTFX 061053
WSWTFX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
353 AM MST TUE DEC 6 2005


MTZ012-013-050-051-061200-
/O.CAN.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
/O.CAN.KTFX.WC.Y.0001.000000T0000Z-051206T1800Z/
CASCADE-CHOUTEAU-JUDITH BASIN-FERGUS-
INCLUDING THE CITIES OF...GREAT FALLS...FORT BENTON...STANFORD...
LEWISTOWN
353 AM MST TUE DEC 6 2005

...WINTER STORM WARNING IS CANCELLED...
...WIND CHILL ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS CANCELLED THE
WINTER STORM WARNING. THE WIND CHILL ADVISORY HAS BEEN CANCELLED.

SNOW AND WINDS HAVE DIMINISHED OVER THE AREA. LOCAL WIND CHILLS
OF 20 BELOW ZERO TO 25 BELOW ZERO CAN BE EXPECTED UNTIL SHORTLY
AFTER SUNRISE. EXPOSED FLESH CAN FREEZE IN AS LITTLE AS 30 MINUTES
AT THESE WIND CHILLS. BE SURE TO WEAR PROPER CLOTHING AS YOU
VENTURE OUTSIDE THIS MORNING.

$$

MTZ014-052>054-061200-
/O.CAN.KTFX.WS.W.0005.000000T0000Z-051206T1200Z/
CENTRAL AND SOUTHERN LEWIS AND CLARK-JEFFERSON-BROADWATER-MEAGHER-
INCLUDING THE CITIES OF...HELENA...BOULDER...TOWNSEND...
WHITE SULPHUR SPRINGS
353 AM MST TUE DEC 6 2005

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS CANCELLED THE
WINTER STORM WARNING. 

SNOW AND WINDS HAVE DIMINISHED OVER THE AREA. 

$$

MTZ009>011-044>049-061200-
/O.CAN.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
/O.CAN.KTFX.WC.Y.0001.000000T0000Z-051206T1800Z/
NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-TOOLE-LIBERTY-
EASTERN PONDERA-BLAINE-SOUTHERN ROCKY MOUNTAIN FRONT-
EASTERN TETON-
INCLUDING THE CITIES OF...BROWNING...CUT BANK...HAVRE...SHELBY...
CHESTER...CONRAD...CHINOOK...CHOTEAU...FAIRFIELD
353 AM MST TUE DEC 6 2005

...SNOW AND BLOWING SNOW ADVISORY IS CANCELLED...
...WIND CHILL ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS CANCELLED THE
SNOW AND BLOWING SNOW ADVISORY. THE WIND CHILL ADVISORY HAS BEEN
CANCELLED. 

SNOW AND WINDS HAVE DIMINISHED OVER THE AREA. AREAS OF WIND CHILLS
20 BELOW ZERO TO 30 BELOW ZERO CAN BE EXPECTED UNTIL AROUND
SUNRISE. EXPOSED FLESH CAN FREEZE IN AS LITTLE AS 30 MINUTES AT
THESE WIND CHILLS. BE SURE TO WEAR PROPER CLOTHING AS YOU VENTURE
OUTSIDE EARLY THIS MORNING.

$$

MTZ008-015-055-061200-
/O.CAN.KTFX.SB.Y.0004.000000T0000Z-051206T1200Z/
BEAVERHEAD-MADISON-GALLATIN-
INCLUDING THE CITIES OF...DILLON...ENNIS...BOZEMAN...
WEST YELLOWSTONE
353 AM MST TUE DEC 6 2005

...SNOW AND BLOWING SNOW ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS CANCELLED THE
SNOW AND BLOWING SNOW ADVISORY. 

WINDS AND SNOW HAVE DIMINISHED OVER THE AREA. STILL EXPECT AREAS
OF BLOWING SNOW INTO THE MORNING WITH LOCAL VISIBILITIES NEAR ONE
QUARTER OF A MILE.

$$

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 Dec 5, 9:44 AM MST, 14 minutes earlier.

Area forecast discussion, Dec 5, 9:44 AM MST, 14 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
944 AM MST MON DEC 5 2005

.UPDATE...
WILL UPDATE ZONES AND STATE BY 10 AM. HAVE RAISED SOME HIGHS FOR
TODAY MAINLY OVER THE SOUTHWEST AS THEY ARE AT OR ALREADY ABOVE
FORECASTED TEMPERATURES. WILL LOWER TEMPERATURES OVER NORTHEASTERN
ZONES AS TEMPERATURES WILL NOT RAISE AS MUCH AS PREVIOUSLY
THOUGHT. SPOTTERS IN FERGUS COUNTY HAVE REPORTED UP TO 8 INCHES
OF SNOW IN HIGHER ELEVATIONS WITH 2 INCHES OVER PLAINS. WILL ISSUE
A WINTER STORM WARNING FOR SEVERAL COUNTIES FOR SNOW AND WINDS
THIS AFTERNOON AND TONIGHT. HAVE RAISED CHANCE OF SNOW OVER THE
WARNING ZONES AS WELL. CAMP

&&

.AVIATION...
UPDATED 1152Z.
WEAK CONVERGENCE ALONG A SURFACE FRONT WILL CONTINUE TO PRODUCE
POCKETS OF LIGHT SNOW AND MVFR CONDITIONS AROUND KLWT THIS MORNING.
STRONG WESTERLY SURFACE WINDS WILL DEVELOP THIS MORNING WEST OF A
KHVR TO KLWT LINE. AREAS OF MVFR DUE TO BLOWING SNOW CAN BE EXPECTED
AROUND KCTB AND KGTF LATE THIS MORNING AND EARLY THIS AFTERNOON.
MEANWHILE...AN ARCTIC COLD FRONT WILL MOVE INTO NORTH CENTRAL
MONTANA BY THE MIDDLE OF THE AFTERNOON. THE FRONT WILL THEN CROSS
MOST OF CENTRAL MONTANA BY EARLY THIS EVENING...AND MOST OF
SOUTHWEST MONTANA BY 12Z TUESDAY. A 2 TO 4 HOUR PERIOD OF STRONG AND
GUSTY NORTHERLY WINDS CAN BE EXPECTED AS THE FRONT PASSES. CEILINGS
WILL ALSO LOWER WITH LIGHT SNOW DEVELOPING OVER ALL AREAS BEHIND THE
FRONT. MVFR WITH LOCAL IFR CONDITIONS CAN BE EXPECTED WITH THE SNOW
OVERNIGHT. SCHAUMANN

&&

.PREV DISCUSSION... (ISSUED 452 AM MST MON DEC 5 2005)

DISCUSSION...

TODAY THROUGH WEDNESDAY...UPPER TROUGH FROM CANADA WILL BE MOVING
SOUTH OVER THE AREA TONIGHT AND TUESDAY. TROUGH WILL BE PRECEDED
BY A COLD FRONT WHICH SHOULD MOVE SOUTH OVER THE PLAINS THIS
AFTERNOON AND THROUGH THE REST OF THE FORECAST AREA THIS EVENING.
BEFORE THE FRONT EXPECT GUSTY SOUTHWEST WINDS ALONG THE EAST
SLOPES OF THE ROCKY MOUNTAINS. MOS GUIDANCE SEEMS TOO LOW WITH
POPS CONSIDERING LIFT AND MOISTURE SO HAVE BEEFED UP POPS THIS
AFTERNOON INTO TONIGHT. AS FOR HIGHLIGHTS WILL HAVE SNOW AND
BLOWING SNOW ADVISORY OVER THE PLAINS TODAY INTO TONIGHT. ALTHOUGH
THERE MIGHT NOT BE ALL THAT MUCH SNOW ACCUMULATION EXPECT GUSTY
WINDS AHEAD OF AND ALSO BEHIND THE FRONT TO CAUSE POOR
VISIBILITIES AT TIMES. ALSO BASED ON FORECAST WINDS AND
TEMPERATURES HAVE EXPANDED THE WIND CHILL ADVISORY FOR TONIGHT AND
TUESDAY MORNING TO ALL OF THE PLAINS. LATER TUESDAY INTO WEDNESDAY
WEATHER SHOULD BE MUCH QUIETER AS DRY AIR MOVES IN BEHIND THE
UPPER TROUGH. WILL LIKELY SEE COLDEST READINGS OF THE SEASON FOR
MANY AREAS WEDNESDAY MORNING. HAVE ALSO ADDED SOME PATCHY FOG FOR
LATE TUESDAY NIGHT AND WEDNESDAY MORNING. BLANK

WEDNESDAY NIGHT THROUGH SATURDAY NIGHT...A MAJOR PATTERN CHANGE WILL
COMMENCE DURING THIS PERIOD. HAVE USED A COMBINATION OF THE ECMWF
AND CANADIAN MODELS AS THE GFS HAS BROKEN CONTINUITY WITH ITS
PREVIOUS RUNS. THE UPPER LEVEL PATTERN WILL FEATURE A RIDGE OF HIGH
PRESSURE FOLDING OVER THE NORTHERN ROCKIES AS A LOW DIGS DOWN THE
WEST COAST. PRESSURE GRADIENTS IN THE BOUNDARY LAYER WILL FAVOR
DOWNSLOPE FLOW. THE ARCTIC AIRMASS IN PLACE AT THE START OF THE
PERIOD WILL THEREFORE SCOUR OUT AS A CHINOOK WIND DEVELOPS. FEEL THE
PLAINS WILL SCOUR OUT WEDNESDAY NIGHT INTO THURSDAY. THE SOUTHWEST
VALLEYS WILL HOLD ON TO THE COLD AIR LONGER...BUT ARE EXPECTED TO
BEGIN MIXING OUT THURSDAY NIGHT INTO FRIDAY. BY THE WEEKEND...MOST
LOCATIONS CAN EXPECT NEAR NORMAL TEMPERATURES. PRESSURE GRADIENTS ON
FRIDAY SHOULD BE RATHER TIGHT...SO A WINDY DAY IS EXPECTED. A
NORTHWESTERLY FLOW ALOFT WILL FAVOR SOME SNOW OVER THE
MOUNTAINS...OTHERWISE ALL OTHER AREAS WILL REMAIN DRY. SCHAUMANN

SUNDAY THROUGH MONDAY...MODEL INCONSISTENCIES DURING THIS PERIOD
COMPLICATE THE FORECAST SOMEWHAT.  I WENT WITH A COMPROMISE SOLUTION
OF A DIRTY UPPER LEVEL RIDGE BUILDING OVER THE PACIFIC NORTHWEST AND
WESTERN CANADA.  A SERIES OF WEAK DISTURBANCES RIDING OVER THE RIDGE
IN A NORTHWESTERLY UPPER AIR FLOW WILL IMPACT THE CWA.  THIS RESULTS
IN PARTLY TO MOSTLY CLOUDY SKIES WITH ISOLATED TO SCATTERED SNOW
SHOWERS OVER THE MOUNTAINS...MAINLY ALONG THE CONTINENTAL DIVIDE.
DOWNSLOPE WINDS KEEP THE PLAINS AND LARGER SOUTHWEST VALLEYS MOSTLY
DRY.  THESE WINDS WILL KEEP TEMPERATURES A FEW DEGREES ABOVE
SEASONAL AVERAGES ACROSS THE PLAINS...WHILE ELSEWHERE TEMPERATURES
WILL BE A LITTLE BELOW SEASONAL AVERAGES.  EK

&&

.AVIATION...
UPDATED 1152Z.
WEAK CONVERGENCE ALONG A SURFACE FRONT WILL CONTINUE TO PRODUCE
POCKETS OF LIGHT SNOW AND MVFR CONDITIONS AROUND KLWT THIS MORNING.
STRONG WESTERLY SURFACE WINDS WILL DEVELOP THIS MORNING WEST OF A
KHVR TO KLWT LINE. AREAS OF MVFR DUE TO BLOWING SNOW CAN BE EXPECTED
AROUND KCTB AND KGTF LATE THIS MORNING AND EARLY THIS AFTERNOON.
MEANWHILE...AN ARCTIC COLD FRONT WILL MOVE INTO NORTH CENTRAL
MONTANA BY THE MIDDLE OF THE AFTERNOON. THE FRONT WILL THEN CROSS
MOST OF CENTRAL MONTANA BY EARLY THIS EVENING...AND MOST OF
SOUTHWEST MONTANA BY 12Z TUESDAY. A 2 TO 4 HOUR PERIOD OF STRONG AND
GUSTY NORTHERLY WINDS CAN BE EXPECTED AS THE FRONT PASSES. CEILINGS
WILL ALSO LOWER WITH LIGHT SNOW DEVELOPING OVER ALL AREAS BEHIND THE
FRONT. MVFR WITH LOCAL IFR CONDITIONS CAN BE EXPECTED WITH THE SNOW
OVERNIGHT. SCHAUMANN

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  28  -8  -2 -10 /  80  70   0   0
CTB  27 -12   1 -18 /  80  70   0   0
HLN  30   3   9 -15 /  60  70  10   0
BZN  27   2   7 -18 /  40  70  20   0
WEY  16  -8   9 -26 /  50  60  50  10
DLN  27   7  14 -10 /  40  80  20   0
HVR  14 -12  -1 -20 /  70  60   0   0
LWT  28  -6  -2 -15 /  80  80  10   0

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
SNOW AND BLOWING SNOW ADVISORY UNTIL 5 AM MST TUESDAY FOR MTZ009
-MTZ010-MTZ011-MTZ014-MTZ044-MTZ045-MTZ046-MTZ047-MTZ048-MTZ049.

WIND CHILL ADVISORY FROM 5 PM THIS AFTERNOON TO 11 AM MST
TUESDAY FOR MTZ009-MTZ010-MTZ011-MTZ012-MTZ013-MTZ044-MTZ045-
MTZ046-MTZ047-MTZ048-MTZ049-MTZ050-MTZ051.

SNOW AND BLOWING SNOW ADVISORY FROM 5 PM THIS AFTERNOON TO 5 AM
MST TUESDAY FOR MTZ008-MTZ015-MTZ052-MTZ053-MTZ055.

WINTER STORM WARNING UNTIL 5 AM MST TUESDAY FOR
MTZ012-MTZ013-MTZ050-MTZ051-MTZ054.

&&

UPDATE...CAMP
SHORT TERM...BLANK
LONG TERM...SCHAUMANN/EK
AVIATION...SCHAUMANN

WEATHER.GOV/GREATFALLS
Hazardous weather outlook, Dec 5, 5:03 AM MST, 4 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
503 AM MST MON DEC 5 2005

MTZ014-061215-
CENTRAL AND SOUTHERN LEWIS AND CLARK-
503 AM MST MON DEC 5 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

...SNOW AND BLOWING SNOW ADVISORY UNTIL 5 AM MST TUESDAY...
FOR THE FOLLOWING ZONES: CENTRAL AND SOUTHERN LEWIS AND CLARK
PLEASE REFER TO GTFWSWTFX FOR MORE DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MTZ009>013-044>051-061215-
NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-CASCADE-
CHOUTEAU-TOOLE-LIBERTY-EASTERN PONDERA-BLAINE-
SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-JUDITH BASIN-FERGUS-
503 AM MST MON DEC 5 2005

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

.DAY ONE...TODAY AND TONIGHT

...SNOW AND BLOWING SNOW ADVISORY UNTIL 5 AM MST TUESDAY...
FOR THE FOLLOWING ZONES:  NORTHERN ROCKY MOUNTAIN FRONT-EASTERN
GLACIER-HILL-CASCADE- CHOUTEAU-TOOLE-LIBERTY-EASTERN PONDERA-
BLAINE- SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-JUDITH BASIN-
FERGUS
PLEASE REFER TO GTFWSWTFX FOR MORE DETAILS.

...WIND CHILL ADVISORY 5 PM THIS AFTERNOON TO 11 AM MST TUESDAY...
FOR THE FOLLOWING ZONES:  NORTHERN ROCKY MOUNTAIN FRONT-EASTERN
GLACIER-HILL-CASCADE- CHOUTEAU-TOOLE-LIBERTY-EASTERN PONDERA-
BLAINE- SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-JUDITH BASIN-
FERGUS
PLEASE REFER TO GTFWSWTFX FOR MORE DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MTZ008-015-052>055-061215-
BEAVERHEAD-MADISON-JEFFERSON-BROADWATER-MEAGHER-GALLATIN-
503 AM MST MON DEC 5 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

Nearby

Winter Storm Warnings in Montana, 2005Every winter storm warning in 2005

Sources

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