Alert archive / Montana / Special Weather Statements in 2012
Special Weather Statement, NWS Great Falls, MT
NWS Great Falls, MT issued this special weather statement at Apr 26, 2012, 7:06 PM MDT for Pondera County, Montana. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2012, 7:06 PM MDT (01:06 UTC)
- Expired
- Apr 26, 2012, 7:45 PM MDT
- In force
- 39 min
- Issued by
- NWS Great Falls, MT
County Pondera County, MT
The radar
The Great Falls radar (KTFX), 88 km from the middle of the area, began a volume at 01:08 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.
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Apr 26, 5:55 PM MDT, 1 hour 11 minutes earlier.
Area forecast discussion, Apr 26, 5:55 PM MDT, 1 hour 11 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 555 PM MDT THU APR 26 2012 UPDATED AVIATION SECTION .DISCUSSION... TODAY THROUGH SATURDAY EVENING...FORECAST STILL ON TRACK FOR PAIR OF VERY MOIST PACIFIC WEATHER SYSTEMS TO BRING WIDESPREAD AND LONG DURATION PRECIPITATION ALONG WITH MUCH COOLER TEMPERATURES OVER OUR REGION THROUGH THE ENTIRE SHORT-TERM FORECAST AREA. CURRENT SATELLITE IMAGERY SHOWS THE SLIGHTLY WEAKER SYSTEM NOW IN ARIZONA AND BEGINNING TO LIFT NORTHEASTWARD. MEANWHILE...THE MUCH DEEPER UPPER LEVEL TROF IS CLOSING IN ON THE WA/OR COAST AND IS EXPECTED TO MOVE INLAND TONIGHT. ASSOCIATED MOISTURE PLUME WITH THESE SYSTEM COVERS A BROAD AREA OF THE GREAT BASIN AND NRN ROCKIES WITH ADDITIONAL MOISTURE EXPECTED TO ACCOMPANY THE STRONGER TROF. AS OF 230 PM LEADING EDGE OF THE MOISTURE IS LOCATED IN OVER OUR FORECAST AREA WHERE IT HAS BEGUN TO MIX WITH LIFT AND INSTABILITY TO GENERATE ISOLATED SHOWERS AND A FEW THUNDERSTORMS OVER SOUTHWEST AND CENTRAL MT. EXPECT THIS ACTIVITY TO BROADEN IN COVERAGE THIS AFTN/EVE BUT INSTABILITY WILL WEAKEN AFTER SUNSET SO SHOWERS WILL CONTINUE BUT THUNDERSTORMS SHOULD DISSIPATE. BEST NEWS IN THE OUTLOOK IS THAT PRIMARY SHORT-TERM FORECAST MODELS ARE IN MUCH BETTER AGREEMENT ON CONDITIONS FOR TOMORROW AND SATURDAY...CERTAINLY BETTER THAN THE GLARING DIFFERENCES SEEN THE PAST FEW DAYS. THE TWO WEATHER SYSTEMS WILL CONTINUE TO TRACK TOWARD EACH OTHER AND EVENTUALLY MERGE OVER NORTHERN WYOMING LATE FRI...THEN GRADUALLY LIFT INTO FAR SOUTHEAST MT ON SAT. AS IT DOES SO...ADDITIONAL MOISTURE WILL BE PULLED FROM THE DAKOTAS OVER THE NRN FLANK OF THE CLOSED LOW PRESSURE AREA...KEEPING A NEAR CONTINUOUS PERIOD OF RAIN...RAIN/SNOW MIX...AND SNOW GOING THROUGH SATURDAY. MODELS STILL SHOW SOME SLIGHT VARIATIONS IN TOTAL PRECIPITATION AND AMOUNTS BUT GENERALLY EXPECT ONE-HALF TO THREE-QUARTERS OF AN INCH OVER MUCH OF THE REGION. SNOW WILL DEVELOP OVER THE SOUTHWEST MTNS TONIGHT AND GRADUALLY SPREAD INTO THE HIGHER ELEVATIONS OF CENTRAL MT FRI PM-SAT AM. SNOW LEVELS WILL GRADUALLY DROP THROUGH SATURDAY SO A FEW INCHES OF WET SLUSH ARE POSSIBLE AT ELEVATIONS AROUND 3000 FT WITH SIGNIFICANTLY HIGHER SNOW AMOUNTS FOR THE CENTRAL MTN RANGES. THUS CURRENT WINTER WEATHER WATCH FOR ALL BUT OUR NORTHEAST ZONES REMAINS IN EFFECT AND BEGINS AT MIDNIGHT TONIGHT. GIVEN THE EXPECTED PRECIP AMOUNTS...RIVERS AND STREAMS WILL CONTINUE TO RISE. A FEW CREEKS IN GLACIER COUNTY ARE ALREADY NEAR BANKFULL...SO HAVE ISSUED A SMALL STREAM FLOOD ADVISORY THERE. FURTHER DETAILS ARE IN THE HYDROLOGY SECTION BELOW. WARANAUSKAS SATURDAY NIGHT THROUGH THURSDAY...MODERATE AGREEMENT IN MODEL GUIDANCE REGARDING THE TIMING AND LOCATION OF THE UPPER LEVEL LOW AS IT MOVES OUT OF THE REGION. CURRENT FORECAST FAVORS THE GFS SOLUTION AND KEEPS RESIDUAL MOISTURE AROUND AS THE GFS IS SLOWER TO PUSH THE SYSTEM NORTHEASTWARD. PRECIPITATION SHOULD BE LIGHT AND REMAIN AS RAIN...POSSIBLY A RAIN SNOW MIX...IN THE LOWER ELEVATIONS WITH SNOW IN THE MOUNTAINS. A MORE ZONAL FLOW DEVELOPS EARLY NEXT WEEK AND WILL PERSIST THROUGH WEDNESDAY. A SHORTWAVE WILL MOVE OVER THE AREA MONDAY EVENING BRINGING A CHANCE OF PACIFIC MOISTURE...MAINLY TO THE ROCKY MOUNTAIN FRONT AND SW MONTANA...AND THEN AGAIN ON TUESDAY EVENING AFFECTING THE SAME AREAS. BY WEDNESDAY AFTERNOON EXPECT CLEARING AND THE FLOW TO BECOME MORE SOUTHWESTERLY. TEMPERATURES WILL START OFF A LITTLE COOL ON SUNDAY AND APPROACH SEASONAL AVERAGES THE REMAINDER OF THE PERIOD. MERCER && .AVIATION... UPDATED 2355Z. A TROUGH OF LOW PRESSURE AND COLD FRONT WILL BRING ACTIVE WEATHER TO THE AREA THROUGH THE TAF PERIOD. AN UNSTABLE AIRMASS OVER THE REGION WILL RESULT IN SCATTERED SHOWERS AND THUNDERSTORMS...SOME WITH GUSTY WINDS...THROUGH THE EARLY EVENING HOURS. A COLD FRONT WILL BRING A LINE OF SHOWERS AND THUNDERSTORMS AND WIND SHIFT THROUGH THE AREA FROM WEST TO EAST...AFFECTING KHLN...KCTB...AND KGTF AFTER 01Z AND KBZN... KLWT...AND KHVR CLOSER TO 06Z. WESTERLY WINDS WILL INCREASE ACROSS THE AREA OVERNIGHT AND INTO FRIDAY ALONG WITH AREAS OF PRECIPITATION AND LOWER CEILINGS...RESULTING IN MVFR CONDITIONS AND MOUNTAIN OBSCURATION. LANGLIEB && .HYDROLOGY... A SMALL STREAM FLOOD ADVISORY HAS BEEN ISSUED FOR GLACIER COUNTY...AS THE TWO MEDICINE RIVER IS RUNNING NEAR BANKFULL. ADDITIONALLY...PORTIONS OF CUT BANK CREEK AND BADGER CREEK COULD EXCEED BANKFULL AT TIMES IN LOW LYING AREAS FROM TONIGHT THROUGH SATURDAY...BECAUSE OF THE ADDITIONAL SNOWMELT AND EXPECTED RAINFALL. OTHER AREAS OVER PORTIONS OF NORTH CENTRAL AND SOUTHWEST MONTANA COULD BE ADDED TO THE SMALL STREAM FLOOD ADVISORY OVER THE NEXT FEW DAYS AS THE SPRING MOUNTAIN SNOWPACK RUNOFF CONTINUES. && .PRELIMINARY POINT TEMPS/POPS... GTF 39 50 33 47 / 80 60 70 70 CTB 34 48 31 49 / 90 60 70 70 HLN 36 48 32 49 / 90 50 60 60 BZN 31 46 23 46 / 90 80 60 60 WEY 27 35 18 37 / 90 80 70 60 DLN 30 43 24 46 / 90 70 50 50 HVR 38 51 33 45 / 80 70 80 60 LWT 35 47 30 41 / 90 70 70 70 && .TFX WATCHES/WARNINGS/ADVISORIES... WINTER STORM WATCH FROM MIDNIGHT MDT TONIGHT THROUGH SATURDAY AFTERNOON BEAVERHEAD...BROADWATER...CASCADE...CENTRAL AND SOUTHERN LEWIS AND CLARK...CHOUTEAU...EASTERN GLACIER...EASTERN PONDERA...EASTERN TETON...FERGUS...GALLATIN...JEFFERSON...JUDITH BASIN...MADISON...MEAGHER...NORTHERN ROCKY MOUNTAIN FRONT... SOUTHERN ROCKY MOUNTAIN FRONT. SMALL STREAM FLOOD ADVISORY FOR GLACIER COUNTY UNTIL NOON SATURDAY. && SHORT TERM...WARANAUSKAS LONG TERM...ZELZER AVIATION...MERCER WEATHER.GOV/GREATFALLS
Hazardous weather outlook, Apr 26, 1:50 PM MDT, 5 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE GREAT FALLS MT 150 PM MDT THU APR 26 2012 MTZ008>010-012>015-046-048>055-271200- BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-CASCADE- CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON- EASTERN PONDERA-SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON- JUDITH BASIN-FERGUS-JEFFERSON-BROADWATER-MEAGHER-GALLATIN- 150 PM MDT THU APR 26 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING. SOME STORMS MAY CONTAIN GUSTY WINDS AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A STRONG PACIFIC STORM SYSTEM WILL BRING WIDESPREAD PRECIPITATION AND SIGNIFICANTLY COOLER TEMPERATURES TO THE AREA FRIDAY AND SATURDAY. SNOW IS EXPECTED IN THE MOUNTAINS. LOWER ELEVATIONS WILL SEE MOSTLY RAIN...HOWEVER THERE IS A CHANCE OF SOME SNOW ESPECIALLY FRIDAY NIGHT THROUGH SATURDAY MORNING. A WINTER STORM WATCH IS IN EFFECT FOR FRIDAY AND SATURDAY. WARM TEMPERATURES CONTRIBUTING TO MELTING SNOW IN THE HIGHER ELEVATIONS...COMBINED WITH WIDESPREAD PRECIPITATION...COULD CAUSE MINOR SMALL STREAM FLOODING AT TIMES THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... ANY SPOTTER REPORTS OF STRONG THUNDERSTORMS AND FLOODING PROBLEMS WOULD GREATLY BE APPRECIATED. MTZ011-044-045-047-271200- HILL-TOOLE-LIBERTY-BLAINE- 150 PM MDT THU APR 26 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL MONTANA. .DAY ONE...TODAY AND TONIGHT STRONG EASTERLY WINDS ARE POSSIBLE THROUGHOUT THE DAY WITH SCATTERED THUNDERSTORMS DEVELOPING THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A STRONG PACIFIC STORM SYSTEM WILL BRING WIDESPREAD PRECIPITATION AND SIGNIFICANTLY COOLER TEMPERATURES TO THE AREA FRIDAY AND SATURDAY THROUGH SATURDAY. LOWER ELEVATIONS WILL SEE MOSTLY RAIN...HOWEVER THERE IS A CHANCE OF SOME SNOW ESPECIALLY FRIDAY NIGHT THROUGH SATURDAY MORNING. WARM TEMPERATURES CONTRIBUTING TO MELTING SNOW IN THE HIGHER ELEVATIONS...COMBINED WITH WIDESPREAD PRECIPITATION...COULD CAUSE MINOR SMALL STREAM FLOODING AT TIMES THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... ANY SPOTTER REPORTS OF STRONG THUNDERSTORMS AND FLOODING PROBLEMS WOULD GREATLY BE APPRECIATED.
In the hours before
Special weather statement, Apr 26, 4:02 PM MDT, 3 hours 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 402 PM MDT THU APR 26 2012 MTZ009-044-046-048-049-262245- EASTERN PONDERA MT-EASTERN TETON MT-NORTHERN ROCKY MOUNTAIN FRONT MT-SOUTHERN ROCKY MOUNTAIN FRONT MT-TOOLE MT- 402 PM MDT THU APR 26 2012 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN PONDERA...EXTREME NORTHERN TETON AND CENTRAL TOOLE COUNTIES UNTIL 445 PM MDT... AT 358 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES WEST OF CONRAD...MOVING NORTH AT 30 MPH. WIND GUSTS UP TO 50 MPH...OCCASIONAL LIGHTING...AND DIME SIZED HAIL ARE EXPECTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... CONRAD... LEDGER... SHELBY... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. LAT...LON 4861 11212 4852 11160 4805 11197 4810 11223 TIME...MOT...LOC 2200Z 196DEG 24KT 4817 11206 NL
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 6:29 PM MDT | Special Weather Statement | TFX | Cascade, Teton | 46 min |
| Apr 26, 8:55 PM MDT | Winter Storm Warning | TFX | 62 hr | |
| Apr 27, 4:49 AM MDT | Winter Weather Advisory | TFX | 34 hr | |
| Apr 27, 12:58 PM MDT | Areal Flood Advisory | TFX | Blaine, Chouteau, Hill | 47 hr |
| Apr 27, 1:09 PM MDT | Areal Flood Advisory | TFX | Cascade, Fergus, Judith Basin | 47 hr |
| Apr 27, 5:48 PM MDT | High Wind Warning | TFX | 12 hr |
Nearby
Special Weather Statements in Montana, 2012Every special weather statement in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.