Alert archive / Montana / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 60, NWS Great Falls, MT

August 1, 2010Fergus County, Judith Basin County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Aug 1, 2010, 7:12 PM MDT for Fergus County, Judith Basin County, Montana. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 1, 2010, 7:12 PM MDT (01:12 UTC)
Expired
Aug 1, 2010, 8:00 PM MDT
In force
48 min
Issued by
NWS Great Falls, MT
Area
Storm-based polygon

Counties Fergus County, MT, Judith Basin County, MT

The radar

The Great Falls radar (KTFX), 128 km from the middle of the area, began a volume at 01:13 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 forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 1, 6:45 PM MDT, 27 minutes earlier.

Area forecast discussion, Aug 1, 6:45 PM MDT, 27 minutes before
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Hazardous weather outlook, Aug 1, 5:34 AM MDT, 13 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
534 AM MDT SUN AUG 1 2010

MTZ008>015-044>055-021145-
BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-
CASCADE-CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON-
TOOLE-LIBERTY-EASTERN PONDERA-BLAINE-
SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-JUDITH BASIN-FERGUS-
JEFFERSON-BROADWATER-MEAGHER-GALLATIN-
534 AM MDT SUN AUG 1 2010

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

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Aug 1, 3:24 PM MDT, 3 hours 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
324 PM MDT SUN AUG 1 2010

MTZ012-013-049-012215-
CASCADE MT-CHOUTEAU MT-EASTERN TETON MT-
324 PM MDT SUN AUG 1 2010

...SIGNIFICANT WEATHER ADVISORY FOR EXTREME EASTERN TETON...NORTHERN
CASCADE AND WESTERN CHOUTEAU COUNTIES UNTIL 415 PM MDT...

AT 319 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES SOUTHEAST OF POWER...OR 14 MILES
NORTHWEST OF GREAT FALLS...MOVING EAST AT 30 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...GREAT FALLS...BLACK
EAGLE...MALMSTROM AFB...TRACY...FLOWEREE AND CARTER. WHILE THE STORM
WILL TRACK NORTH OF GREAT FALLS...OUTFLOW WIND GUSTS UP TO 50 MPH
WILL EXTEND WELL SOUTH OF THE STORM.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

IN ADDITION...THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR
LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

LAT...LON 4780 11084 4740 11100 4746 11167 4770 11165
TIME...MOT...LOC 2122Z 265DEG 27KT 4764 11149

OH
Special weather statement, Aug 1, 3:41 PM MDT, 3 hours 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
341 PM MDT SUN AUG 1 2010

MTZ013-044>046-012230-
CHOUTEAU MT-EASTERN PONDERA MT-LIBERTY MT-TOOLE MT-
341 PM MDT SUN AUG 1 2010

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN PONDERA...NORTHWESTERN
CHOUTEAU...SOUTHEASTERN TOOLE AND SOUTHERN LIBERTY COUNTIES UNTIL 430
PM MDT...

AT 337 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 14 MILES NORTHWEST OF THE KNEES...OR 25 MILES
EAST OF CONRAD...MOVING EAST AT 35 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MAINLY RURAL AREAS
EXTREME SOUTHEASTERN TOOLE...NORTHWESTERN CHOUTEAU AND SOUTHERN
LIBERTY COUNTIES.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

IN ADDITION...THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR
LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

LAT...LON 4846 11080 4809 11076 4806 11149 4833 11157
TIME...MOT...LOC 2141Z 264DEG 31KT 4821 11136

OH
Special weather statement, Aug 1, 3:52 PM MDT, 3 hours 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
352 PM MDT SUN AUG 1 2010

MTZ050-051-012300-
FERGUS MT-JUDITH BASIN MT-
352 PM MDT SUN AUG 1 2010

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN JUDITH BASIN AND
SOUTHWESTERN FERGUS COUNTIES UNTIL 500 PM MDT...

AT 351 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 16 MILES SOUTHWEST OF HOBSON...OR 22 MILES SOUTH
OF STANFORD...MOVING EAST AT 30 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...HOBSON...MOORE...
UTICA...BUFFALO AND MOCCASIN.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

IN ADDITION...THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR
LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

LAT...LON 4683 10946 4675 11019 4694 11028 4719 10963
TIME...MOT...LOC 2153Z 255DEG 24KT 4684 11008

OH
Special weather statement, Aug 1, 4:19 PM MDT, 2 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
419 PM MDT SUN AUG 1 2010

MTZ013-012315-
CHOUTEAU MT-
419 PM MDT SUN AUG 1 2010

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CHOUTEAU COUNTY UNTIL 515
PM MDT...

AT 414 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 8 MILES NORTH OF HIGHWOOD...OR 10 MILES SOUTHWEST
OF FORT BENTON...MOVING EAST AT 35 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

* LOCATIONS IMPACTED INCLUDE...
  RURAL CENTRAL CHOUTEAU COUNTY...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 4797 11008 4763 10999 4762 11080 4778 11087
TIME...MOT...LOC 2219Z 258DEG 32KT 4771 11069

OH
Local storm report, Aug 1, 6:21 PM MDT, 51 minutes before
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Local storm report, Aug 1, 6:59 PM MDT, 13 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 6:19 PM MDTSevere Thunderstorm WarningTFXBlaine41 min
Aug 1, 8:06 PM MDTSpecial Weather StatementTFXFergus24 min

Nearby

Severe Thunderstorm Warnings in Montana, 2010Every severe thunderstorm warning in 2010

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.