Alert archive / Montana / Wind Chill Advisories in 2008
Wind Chill Advisory 8, NWS Great Falls, MT
NWS Great Falls, MT issued this wind chill advisory at Dec 13, 2008, 9:07 PM MST. It was in force for 39 hr.
The area
The counties it named.
The facts
- Issued
- Dec 13, 2008, 9:07 PM MST (04:07 UTC)
- Expired
- Dec 15, 2008, 12:00 PM MST
- In force
- 39 hr
- Issued by
- NWS Great Falls, MT
What forecasters said that day
The local office's own words before this wind chill advisory 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 wind chill advisory went out at Dec 13, 8:54 PM MST, 13 minutes earlier.
Area forecast discussion, Dec 13, 8:54 PM MST, 13 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 854 PM MST SAT DEC 13 2008 .UPDATE... WILL UPDATE ZONE FORECASTS BY 915 PM MST...AND WILL UPDATE STATE FORECAST BY 10 PM MST. SNOW AND WIND HAVE DECREASED IN INTENSITY ACROSS NORTH CENTRAL...CENTRAL...AND SOUTHWEST MONTANA THIS EVENING. THE WIDESPREAD LIGHT SNOW LINGERING EAST OF A LINE FROM THE ROCKY MOUNTAIN FRONT SOUTH THROUGH HELENA AND WEST YELLOWSTONE WILL PERSIST MAINLY THROUGH THE EVENING HOURS...THEN DECREASE FURTHER AFTER MIDNIGHT. WINDS OF 10 TO 20 MPH WITH OCCASIONAL GUSTS UP TO 30 MPH WILL CAUSE AREAS OF BLOWING SNOW...AGAIN MAINLY THROUGH MIDNIGHT. THEREFORE...HAVE CANCELLED THE BLIZZARD WARNINGS AND WINTER STORM WARNINGS. DUE TO THE LINGERING SNOW AND GUSTY WINDS MAINLY ACROSS NORTH CENTRAL AND CENTRAL MONTANA...WILL GO WITH A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW THROUGH MIDNIGHT THERE. OTHERWISE...TEMPERATURES WILL CONTINUE TO DROP INTO THE TEENS AND 20S BELOW ZERO ACROSS THE AREA TONIGHT. WITH WINDS EXPECTED TO STAY AROUND 10 TO 15 MPH WITH OCCASIONAL GUSTS...WIND CHILL TEMPERATURES WILL FALL INTO THE 40 TO 55 DEGREE BELOW ZERO RANGE ACROSS NORTH CENTRAL AND CENTRAL MONTANA...SO WILL GO WITH A WIND CHILL WARNING THERE UNTIL WINDS DECREASE AROUND NOON MST ON SUNDAY. IN SOUTHWEST MONTANA...WINDS WILL BE SIMILARLY BLUSTERY...BUT WIND CHILL TEMPERATURES ARE ONLY EXPECTED TO FALL INTO THE 30 TO 40 DEGREE BELOW ZERO RANGE...SO WILL GO WITH A WIND CHILL ADVISORY THERE UNTIL NOON MST SUNDAY. REMAINDER OF THE FORECAST IS IN GOOD SHAPE. COULSTON && .AVIATION... UPDATED 14/0000Z... EXPECT MVFR TO IFR CONDITIONS TO CONTINUE TONIGHT AT ALL LOCAL AIRFIELDS AS MAJOR WINTER STORM SLOWLY DEPARTS TO THE EAST. PERIOD OF SIGNIFICANT SNOW HAS ENDED BUT RESIDUAL FLURRIES WILL CONTINUE ACROSS THE REGION TONIGHT. WINDS WILL GRADUALLY DIMINISH AS WELL... REDUCING THE AMOUNT OF SNOW BLOWING ACROSS RUNWAYS. SLOW IMPROVEMENT IN CONDITIONS EXPECTED ON SUNDAY WITH PATCHY SPOTS OF VFR CONDITIONS POSSIBLE BY MID-LATE AFTERNOON. WARANAUSKAS && .PREV DISCUSSION... /ISSUED 305 PM MST SAT DEC 13 2008/ BLIZZARD CONDITIONS SLOWLY DIMINISHING OVER THE REGION...WHILE ARCTIC AIR CONTINUES TO MOVE SOUTHWARD INTO THE AREA. TONIGHT...BLIZZARD WARNING HAS EXPIRED FOR THE ENTIRE REGION EXCEPT FOR BLAINE AND FERGUS COUNTY WHERE IT WILL REMAIN IN EFFECT UNTIL 11 PM. ELSEWHERE A WINTER STORM WARNING IS IN EFFECT UNTIL 11 PM. THE MAJORITY OF THE SNOW ACCUMULATIONS HAVE ENDED...AS THE STORM SYSTEM PULLS OUT INTO THE UPPER MIDWEST. SEE GTFWSWTFX FOR FURTHER DETAILS. EXPECT BITTERLY COLD TEMPERATURES TO MOVE INTO THE REGION TONIGHT. WIND CHILL VALUES COULD BE AS COLD AS 50 BELOW IN THE CUT BANK AND HAVRE AREA. A WIND CHILL WARNING COULD BE ISSUED LATER TONIGHT IF WIND SPEEDS REMAIN STRONG ENOUGH. SUNDAY THROUGH MONDAY...EXPECT SCATTERED SNOW SHOWERS TO CONTINUE OVER SOUTHWEST MONTANA...WHILE ARCTIC AIR CONTINUES TO RESIDE OVER THE REMAINDER OF THE REGION. OVERNIGHT LOWS COULD APPROACH 40 BELOW IN HIGHER ELEVATIONS. DAYTIME HIGHS WILL REMAIN VERY COLD...GENERALLY IN THE TEENS BELOW ZERO OVER THE NORTH...AND AROUND ZERO IN THE SOUTHWEST. BRUSDA MONDAY NIGHT THROUGH THURSDAY NIGHT...GFS AND ECMWF ARE IN PRETTY GOOD AGREEMENT DURING THE PERIOD IN A GENERAL SENSE. A SHORTWAVE IS FORECAST TO MOVE SOUTHEAST THROUGH THE AREA TUESDAY BUT IS NOT SUPPOSED TO HAVE MUCH MOISTURE WITH IT. IN FACT AHEAD OF IT HAVE DROPPED THE MENTION OF SNOW OVER A PORTION OF THE PLAINS. SHOULD SEE SOME SLIGHT MODERATION IN TEMPERATURES TUESDAY AND WEDNESDAY. BUT THEN ANOTHER SURGE OF ARCTIC AIR WILL INVADE THE AREA LATE WEDNESDAY INTO THURSDAY. MEANWHILE AN UPPER LOW PRESSURE SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST ON THURSDAY. MOISTURE IN A SOUTHWEST FLOW ALOFT AHEAD OF THE LOW WILL FLOW OVER THE ARCTIC AIR AND BRING ANOTHER SHOT OF SNOW AT LEAST IN THE NORTH. SINCE THE GFS AND ECMWF AGREE ON THIS IDEA HAVE INCREASED THE CHANCES OF SNOW OVER MOST OF THE PLAINS INTO THE LIKELY CATEGORY. THIS ARCTIC AIR LOOKS TO BE ABOUT AS COLD AS WHAT WILL OCCUR LATE THIS WEEKEND AND EARLY THIS WEEK SO HAVE LOWERED BOTH HIGH AND LOW TEMPERATURES LATE IN THE WEEK INTO THE WEEKEND. BLANK && .PRELIMINARY POINT TEMPS/POPS... GTF -27 -19 -31 -16 / 80 20 20 20 CTB -30 -23 -31 -17 / 60 20 20 20 HLN -20 -11 -20 -7 / 30 30 20 20 BZN -19 -5 -19 -4 / 60 30 20 20 WEY -19 1 -12 7 / 70 60 40 40 DLN -19 -2 -16 4 / 30 40 30 30 HVR -26 -19 -31 -18 / 80 20 10 10 LWT -24 -18 -30 -14 / 80 30 20 20 && .TFX WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW UNTIL MIDNIGHT MST TONIGHT FOR MTZ009>014-044>051-054. WIND CHILL WARNING UNTIL NOON MST SUNDAY FOR MTZ009>014-044>051-054. WIND CHILL ADVISORY UNTIL NOON MST SUNDAY FOR MTZ008-015-052-053-055. && SHORT TERM...COULSTON/BRUSDA LONG TERM...BLANK AVIATION...WARANAUSKAS WEATHER.GOV/GREATFALLS
Hazardous weather outlook, Dec 13, 3:26 PM MST, 5 hours 41 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE GREAT FALLS MT 326 PM MST SAT DEC 13 2008 MTZ047-051-141400- BLAINE-FERGUS- 326 PM MST SAT DEC 13 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA AND NORTH CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A BLIZZARD WARNING IS IN EFFECT UNTIL 11 PM MST TONIGHT. SEVERE WINTER CONDITIONS ARE EXPECTED TO CONTINUE ACROSS BLAINE AND FERGUS COUNTIES THROUGH THIS EVENING. THE MAIN IMPACTS FROM THIS STORM WILL BE REDUCED VISIBILITY DUE TO SIGNIFICANT BLOWING AND DRIFTING SNOW...VERY LOW WIND CHILL TEMPERATURES...AND ADDITIONAL SNOW ACCUMULATIONS. SNOW WILL GENERALLY DECREASE OVERNIGHT...BUT VERY COLD AIR TEMPERATURES AND LINGERING BLUSTERY WINDS WILL KEEP WIND CHILL TEMPERATURES QUITE LOW OVERNIGHT. THEREFORE...PRODUCTS SPECIFIC TO WIND CHILLS MAY BE NEEDED LATER THIS EVENING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY BLOWING AND DRIFTING SNOW WILL CONTINUE TO IMPACT VISIBILITY THROUGH SUNDAY. AIR TEMPERATURES WILL REMAIN WELL BELOW ZERO...AND THERE IS THE POTENTIAL FOR CONTINUED BLUSTERY WINDS THROUGH TUESDAY. VERY COLD WIND CHILL TEMPERATURES WILL CONTINUE TO BE A SERIOUS THREAT...AND PRODUCTS SPECIFIC TO WIND CHILLS MAY STILL BE NEEDED THROUGH THE PERIOD. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ008>015-044>046-048>050-052>055-141400- BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL- CASCADE-CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON- TOOLE-LIBERTY-EASTERN PONDERA-SOUTHERN ROCKY MOUNTAIN FRONT- EASTERN TETON-JUDITH BASIN-JEFFERSON-BROADWATER-MEAGHER-GALLATIN- 326 PM MST SAT DEC 13 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A WINTER STORM WARNING IS IN EFFECT UNTIL 11 PM MST TONIGHT. WIND AND SNOW WILL CONTINUE TO DECREASE ACROSS NORTH CENTRAL...CENTRAL...AND SOUTHWEST MONTANA THIS EVENING. HOWEVER...REDUCED VISIBILITIES DUE TO SIGNIFICANT BLOWING AND DRIFTING SNOW...VERY LOW WIND CHILL TEMPERATURES...AND ADDITIONAL SNOW ACCUMULATION WILL CONTINUE THROUGH THE EVENING HOURS. VERY COLD AIR TEMPERATURES AND LINGERING BLUSTERY WINDS WILL KEEP WIND CHILL TEMPERATURES QUITE LOW OVERNIGHT. THEREFORE...PRODUCTS SPECIFIC TO WIND CHILLS MAY BE NEEDED LATER THIS EVENING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY BLOWING AND DRIFTING SNOW WILL CONTINUE TO IMPACT VISIBILITY THROUGH SUNDAY. AIR TEMPERATURES WILL REMAIN WELL BELOW ZERO...AND THERE IS THE POTENTIAL FOR CONTINUED BLUSTERY WINDS THROUGH TUESDAY. VERY COLD WIND CHILL TEMPERATURES WILL CONTINUE TO BE A SERIOUS THREAT...AND PRODUCTS SPECIFIC TO WIND CHILLS MAY STILL BE NEEDED THROUGH THE PERIOD. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Local storm report, Dec 13, 3:18 PM MST, 5 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GREAT FALLS MT
318 PM MST SAT DEC 13 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 AM BLIZZARD SIMMS 47.49N 111.93W
12/13/2008 CASCADE MT TRAINED SPOTTER
A REPORT OF WINDS GUSTING TO 60 MILES AN HOUR WITH NEAR
ZERO VISIBILITY.
0215 AM BLIZZARD 10 NW HELENA 46.70N 112.17W
12/13/2008 LEWIS AND CLARK MT TRAINED SPOTTER
REPORTS FROM SILVER CITY OF WIND GUSTING TO 50 MILES AN
HOUR WITH ABOUT ONE QUARTER OF A MILE VISIBILITY.
0220 AM BLIZZARD GREAT FALLS 47.50N 111.29W
12/13/2008 CASCADE MT OFFICIAL NWS OBS
BLIZZARD CONDITIONS CONTINUING AT KGTF SINCE 1 AM LOCAL
TIME
0220 AM BLIZZARD SHELBY 48.51N 111.86W
12/13/2008 TOOLE MT LAW ENFORCEMENT
REPORTS OF BLIZZARD CONDITIONS STRANDING MOTORISTS WHO
ARE SHELTERED IN A LOCAL CHURCH.
0354 AM BLIZZARD 7 W FAIRFIELD 47.62N 112.13W
12/13/2008 TETON MT TRAINED SPOTTER
NEAR ZERO VISIBILITY...BRANCHES DOWN...ROOF DAMAGED...
POWER OUT. SPOTTER REPORTS THAT WIND SO STRONG COULD
BARELY STAND...WORST STORM SEEN IN DECADES.
0810 AM NON-TSTM WND GST 15 S BOULDER 46.02N 112.12W
12/13/2008 M50.00 MPH JEFFERSON MT TRAINED SPOTTER
MEASURED WIND GUST 70 MPH WITH LIGHT SNOW FALLING
0920 AM SNOW HAVRE 48.54N 109.68W
12/13/2008 E5.0 INCH HILL MT TRAINED SPOTTER
ESTIMATED 3 TO 5 INCHES OF SNOW AT 930 AM LOCAL TIME
0920 AM BLIZZARD 3 N DILLON 45.26N 112.63W
12/13/2008 BEAVERHEAD MT TRAINED SPOTTER
4.75 INCHES OF SNOW WITH VISIBILITIES LESS THAN ONE
QUARTER OF A MILE
1015 AM BLIZZARD 8 SE CUT BANK 48.55N 112.21W
12/13/2008 GLACIER MT TRAINED SPOTTER
ESTIMATED 2 TO 3 INCHES SNOW ACCUMLATION WITH LESS THAN
ONE QUARTER MILE VISIBILITY FOR OVER 3 HOURS
1042 AM BLIZZARD 20 W CHOTEAU 47.81N 112.61W
12/13/2008 TETON MT TRAINED SPOTTER
6 INCHES OF NEW SNOW...NORTH WINDS AT 50 MPH...VISIBILITY
ZERO
1130 AM SNOW 7 S NEIHART 46.83N 110.74W
12/13/2008 E5.0 INCH MEAGHER MT PUBLIC
ESTIMATED 6 TO 8 INCHES OF SNOW AT SHOWDOWN AS OF 1130 AM
LOCAL TIME
1130 AM BLIZZARD CHESTER 48.51N 110.97W
12/13/2008 LIBERTY MT LAW ENFORCEMENT
ESTIMATED 5 TO 8 INCHES OF SNOW WITH 2 FEET DRIFTS.
REDUCED VISIBILITIES LESS THAN ONE QUARTER OF A MILE
SINCE 8AM
1200 PM BLIZZARD 27 N RUDYARD 48.95N 110.55W
12/13/2008 HILL MT TRAINED SPOTTER
ESTIMATED 3 TO 5 INCHES OF SNOW WITH 2 TO 4 FEET DRIFTS
AS OF NOON LOCAL TIME. LESS THAN ONE QUARTER OF A MILE
VISIBILITY SINCE APPROXIMATELY 130 AM.
1200 PM BLIZZARD SE CHINOOK 48.59N 109.23W
12/13/2008 BLAINE MT CO-OP OBSERVER
ESTIMATED 8 INCHES OF SNOW WITH LESS THAN ONE QUARTER OF
A MILE VISIBILITY SINCE 4 AM LOCAL TIME.
1228 PM BLIZZARD 1 N SIMMS 47.51N 111.93W
12/13/2008 CASCADE MT TRAINED SPOTTER
SUSTAINED WIND 40 GUST 60 MPH AT 2 AM...3 INCHES OF
SNOW...VISIBILITY 1/4 MILES OR LESS FROM 2 AM UNTIL 1225
PM MST.
1245 PM BLIZZARD 12 E CONRAD 48.17N 111.69W
12/13/2008 PONDERA MT TRAINED SPOTTER
ESTIMATED 3 TO 4 INCHES OF SNOW. LESS THAN ONE QUARTER OF
A MILE VISIBILITY BETWEEN 7AM MST AND NOON MST.
0100 PM BLIZZARD 8 E POWER 47.72N 111.51W
12/13/2008 TETON MT TRAINED SPOTTER
ESTIMATED 2 TO 4 INCHES OF SNOW WITH 3 FEET DRIFTS. LESS
THAN ONE QUARTER OF A MILE VISIBILITY SINCE 9 AM MST.
0101 PM HEAVY SNOW 3 N DILLON 45.26N 112.63W
12/13/2008 M7.0 INCH BEAVERHEAD MT TRAINED SPOTTER
DRIFTS TO 1 FOOT...NORTH WINDS 20-30 MPH...VISIBILITY 1/2
MILE.
0130 PM BLIZZARD 3 SW CRAIG 47.04N 112.01W
12/13/2008 LEWIS AND CLARK MT TRAINED SPOTTER
ESTIMATED 3 INCHES OF SNOW WITH LESS THAN ONE QUARTER OF
A MILE VISIBILITY ESTIMATED BETWEEN 8 AM AND NOON MST.
0130 PM BLIZZARD 3 ESE WOLF CREEK 46.99N 112.01W
12/13/2008 LEWIS AND CLARK MT CO-OP OBSERVER
ESTIMATED 3 INCHES OF SNOW ACCUMULATION. LESS THAN ONE
QUARTER OF A MILE VISIBILITY 630 AM TO 830 AM MST.
0145 PM BLIZZARD HOBSON 47.00N 109.87W
12/13/2008 JUDITH BASIN MT CO-OP OBSERVER
CONSIDERABLE BLOWING AND DRIFTING SNOW. VISIBILITIES AT
OR LESS THAN ONE QUARTER OF A MILE SINCE 5 AM MST.
0200 PM BLIZZARD BOULDER 46.24N 112.12W
12/13/2008 JEFFERSON MT TRAINED SPOTTER
ESTIMATED SNOW ACCUMATION 4 TO 5 INCHES. LESS THAN ONE
QUARTER OF A MILE VISIBILITY SINCE 7 AM MST.
0230 PM BLIZZARD HILGER 47.25N 109.36W
12/13/2008 FERGUS MT TRAINED SPOTTER
SEVERAL INCHES OF SNOW ACCUMULATION WITH 2 TO 3 FEET
DRIFTS. VISIBILITY LESS THAN OR EQUAL TO ONE QUARTER OF A
MILE BETWEEN 7 AM AND 2 PM MST.
0245 PM BLIZZARD WHITE SULPHUR SPRINGS 46.55N 110.90W
12/13/2008 MEAGHER MT LAW ENFORCEMENT
VISIBILITIES LESS THAN OR EQUAL TO ONE QUARTER OF A MILE
SINCE 6AM MST. CONSIDERABLE BLOWING AND DRIFTING SNOW.
0300 PM BLIZZARD SW BOZEMAN 45.68N 111.04W
12/13/2008 GALLATIN MT LAW ENFORCEMENT
ESTIMATED SNOW ACCUMULATION 4 TO 5 INCHES WITH
CONSIDERABLE BLOWING AND DRIFTING. VISIBILITIES LESS THAN
OR EQUAL TO ONE QUARTER OF A MILE BETWEEN 6 AM AND 10 AM
MST.
&&
MSYNERThe office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 9:07 PM MST | Wind Chill Warning | TFX | 39 hr | |
| Dec 13, 9:07 PM MST | Winter Weather Advisory | TFX | 3 hr |
Nearby
Wind Chill Advisories in Montana, 2008Every wind chill advisory in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.