A severe thunderstorm developed over Blaine county during the late afternoon hours of July 14. Hail the size of quarters was reported.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS TFX wrote it up.
A severe thunderstorm developed over Blaine county during the late afternoon hours of July 14. Hail the size of quarters was reported.
The local office's own words before the first event, 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 the first event at Jul 14, 1:20 PM MST, 2 hours 48 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 220 PM MDT SAT JUL 14 2007 .DISCUSSION... TONIGHT THROUGH MONDAY...STRONG UPPER LEVEL RIDGE REMAINS FIRMLY IN PLACE OVER THE CWA THROUGH THE SHORT TERM. A WEAK SHORT WAVE MOVING THROUGH THE REGION TONIGHT WILL BRING ISOLATED TO SCATTERED THUNDERSTORMS THROUGH THE EVENING...ESPECIALLY IN SOUTHWESTERN MONTANA. DO NOT EXPECT ANY WIDESPREAD SEVERE WEATHER BUT SOME STORMS MAY HAVE GUSTY WINDS. WILL SEE A REPEAT OF AFTERNOON AND EVENING THUNDERSTORMS SUNDAY AND MONDAY AS MORE SHORT WAVES MOVE THROUGH THE RIDGE...AND AGAIN SOME WILL HAVE GUSTY WINDS. BENEATH THE RIDGE TEMPERATURES WILL CONTINUE TO BE VERY HOT...WITH THE POTENTIAL TO TIE OR EXCEED RECORD HIGHS ACROSS THE ENTIRE CWA ON SUNDAY. THE RIDGE WILL SHIFT EVER SO SLIGHTLY EASTWARD ON MONDAY BUT NOT ENOUGH TO BRING MUCH RELIEF FROM THE HEAT...THOUGH THE AREA FOR RECORD HIGHS WILL BE SMALLER. THOMSON MONDAY NIGHT THROUGH THURSDAY NIGHT...AN AMPLIFIED RIDGE OF HIGH PRESSURE WILL BE THE MAIN WEATHER FEATURE DURING THIS PERIOD...WITH EXCEPTIONAL WARMTH REMAINING OVER THE REGION. AFTERNOON THUNDERSTORMS ARE ANTICIPATED EACH DAY OVER HIGH TERRAIN...PARTICULARLY THE SOUTHWEST MOUNTAINS. THE FLOW PATTERN ALOFT WILL TRANSITION FROM SOUTHWESTERLY DURING MONDAY EVENING...TO SOUTHERLY BY TUESDAY EVENING. A FEW WEAK DISTURBANCES ARE EXPECTED TO MOVE WITHIN THE TRANSITIONING FLOW...BRINGING AN INCREASED CHANCE OF MEASURABLE PRECIPITATION OVER THE SOUTHWEST MOUNTAINS AND NORTHERN ROCKIES TUESDAY EVENING THRU MIDDAY WEDNESDAY. TOWARD THE END OF THE PERIOD...THE AXIS OF THE HIGH PRESSURE RIDGE DRIFTS TO THE NORTHEAST AND RELATIVELY COOLER CONDITIONS ARE ANTICIPATED TO DEVELOP THEREAFTER. ZUMPFE FRIDAY THROUGH SATURDAY...MODELS CONTINUE IN FAIR AGREEMENT DURING THIS PERIOD. AN UPPER LEVEL RIDGE DRIFTS EAST OF THE STATE... FOLLOWED BY AN UPPER LEVEL TROUGH THAT MOVES ONTO THE WEST COAST SATURDAY. WEAK DISTURBANCES IN A SOMEWHAT MOIST AND UNSTABLE SOUTHWESTERLY FLOW ALOFT...RESULTS IN PARTLY TO MOSTLY CLOUDY SKIES WITH ISOLATED SHOWERS OR THUNDERSTORMS OVER MUCH OF THE FORECAST AREA...ESPECIALLY THE MOUNTAINS. WITH LOWER HEIGHTS...TEMPERATURES WILL COOL A FEW DEGREES BUT WILL REMAIN ABOVE SEASONAL AVERAGES. EK && .AVIATION... UPDATED 1702Z. A STRONG UPPER LEVEL RIDGE WILL REMAIN OVER THE REGION THROUGH THE NEXT 24 HOURS. MOISTURE AND WEAK DISTURBANCES EMBEDDED WITHIN THE RIDGE WILL COMBINE WITH AN UNSTABLE ATMOSPHERE FOR WIDELY SCATTERED THUNDERSTORM ACTIVITY LATE THIS AFTERNOON AND EVENING. VFR CONDITIONS ARE EXPECTED TO PREVAIL WITH ISOLATED MVFR CEILINGS AND VISIBILITY NEAR THUNDERSTORM ACTIVITY. HOENISCH && .FIRE WEATHER... THE SCREAMING MESSAGE WILL BE A NEAR RECORD HEAT THIS WEEKEND AND EARLY NEXT WEEK. EXPECT SOME ISOLATED TO SCATTERED THUNDERSTORMS. SOME OF THESE STORMS WILL BE WET WHILE OTHERS WILL HAVE LITTLE OR NO RAINFALL. DRY THUNDERSTORM ACTIVITY SHOULD BE ISOLATED SO WILL HOLD OFF ON ISSUING ANY FIRE WEATHER HIGHLIGHTS AND WILL JUST HIGHLIGHT THE HEAT AND DEVELOPMENT OF THUNDERSTORMS OVER THE AREA. THOMSON/BLANK && .PRELIMINARY POINT TEMPS/POPS... GTF 65 100 63 99 / 20 20 20 20 CTB 60 98 60 98 / 20 20 20 10 HLN 63 102 62 100 / 20 20 20 10 BZN 59 98 60 98 / 30 20 30 20 WEY 50 90 50 89 / 30 20 20 20 DLN 59 96 58 92 / 30 20 20 20 HVR 63 104 65 101 / 10 10 20 10 LWT 61 99 60 95 / 20 20 30 10 && .TFX WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...THOMSON LONG TERM...ZUMPFE/EK AVIATION...HOENISCH WEATHER.GOV/GREATFALLS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREAT FALLS MT 416 AM MDT SAT JUL 14 2007 MTZ008-015-052-151030- BEAVERHEAD-MADISON-JEFFERSON- 416 AM MDT SAT JUL 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MONTANA. .DAY ONE...TODAY AND TONIGHT THERE IS A FIRE WEATHER WATCH IN EFFECT THIS AFTERNOON INTO THIS EVENING FOR INCREASING THUNDERSTORM ACTIVITY. NEAR RECORD HIGH TEMPERATURES ARE EXPECTED TODAY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY AN EXTENDED PERIOD OF HOT TEMPERATURES IS EXPECTED WITH NEAR RECORD HIGH TEMPERATURES SUNDAY THROUGH THURSDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ054-055-151030- MEAGHER-GALLATIN- 416 AM MDT SAT JUL 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MONTANA. .DAY ONE...TODAY AND TONIGHT THERE IS A FIRE WEATHER WATCH IN EFFECT THIS AFTERNOON AND TONIGHT FOR INCREASING THUNDERSTORM ACTIVITY...HOT AND DRY CONDITIONS. NEAR RECORD HIGH TEMPERATURES ARE EXPECTED TODAY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THERE IS A FIRE WEATHER WATCH IN EFFECT SUNDAY AND SUNDAY EVENING FOR THUNDERSTORMS...HOT AND DRY CONDITIONS. AN EXTENDED PERIOD OF HOT TEMPERATURES IS EXPECTED WITH NEAR RECORD HIGH TEMPERATURES SUNDAY THROUGH THURSDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ009>014-044>051-053-151030- NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-CASCADE- CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-TOOLE-LIBERTY- EASTERN PONDERA-BLAINE-SOUTHERN ROCKY MOUNTAIN FRONT- EASTERN TETON-JUDITH BASIN-FERGUS-BROADWATER- 416 AM MDT SAT JUL 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...TODAY AND TONIGHT NEAR RECORD HIGH TEMPERATURES ARE EXPECTED TODAY IN THE WEST. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY AN EXTENDED PERIOD OF HOT TEMPERATURES IS EXPECTED WITH NEAR RECORD HIGH TEMPERATURES SUNDAY THROUGH THURSDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
341 PM MDT SAT JUL 14 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM HAIL 3 NW AUGUSTA 47.52N 112.44W
07/14/2007 E0.50 INCH LEWIS AND CLARK MT TRAINED SPOTTER
HALF INCH DIAMETER HAIL 1 TO 2 INCHES DEEP.
&&
BRUSDAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
412 PM MDT SAT JUL 14 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0405 PM HAIL BOWMANS CORNER 47.29N 112.16W
07/14/2007 E0.25 INCH LEWIS AND CLARK MT PUBLIC
ABOUT AN INCH ON THE GROUND
&&
WILLIAMSON DCThe Great Falls radar (KTFX), 193 km away, was scanning. The volume nearest the first event began at 23:05 UTC.
1 hail. Local standard time, as filed.
A severe thunderstorm dropped 1 inch diameter hail at Chinook 11S. The storm also produced .55 inches of rain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2007Every state in 2007This day in weather historyWarnings in Montana, July 2007
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 35862.