Thunderstorms developed over Hill County.
Every event with a place to put it. Tap one for its entry below.
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.
Thunderstorms developed over Hill County.
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 Jun 24, 9:55 PM MST, 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 1055 PM MDT SUN JUN 24 2012 UPDATED AVIATION SECTION .DISCUSSION... HAVE ISSUED A RED FLAG WARNING FOR FIRE ZONE 118 ON MONDAY AFTERNOON AND EVENING. CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED WITH FORECASTED WARM TEMPERATURES...STRONG WINDS AND LOW RELATIVE HUMIDITIES. MLV && .AVIATION... UPDATED 0455Z. SOUTHWEST FLOW ALOFT CONTINUES. THE AIRMASS REMAINS VERY DRY AND HAS STABILIZED. A LAYER OF LOW AND MID CLOUDS WILL PERSIST ACROSS PORTIONS OF NORTH CENTRAL MONTANA. ISOLATED THUNDERSTORMS REMAIN A POSSIBILITY ALONG THE INTERNATIONAL BOUNDARY. VFR CONDITIONS PREVAIL WITH MVFR CONDITIONS IN THE VICINITY OF THUNDERSTORMS. && .FIRE WEATHER... RED FLAG WARNING FOR FIRE ZONES 110 AND 111 REMAINS IN EFFECT THROUGH 9 PM MDT. SOME STRONGER WINDS AND LOW HUMIDITY VALUES HAVE ALSO MOVED INTO THE SOUTHERN PORTION OF ZONE 118 AND HAVE ISSUED A RED FLAG WARNING UNTIL MIDNIGHT MDT. ANOTHER WARNING HAS BEEN ISSUED FOR MONDAY AFTERNOON AND EVENING FOR ZONES 110...111 AND 118 FOR STRONG WINDS AND LOW RELATIVE HUMIDITIES. MPJ/MLV && .PREV DISCUSSION... /ISSUED 550 PM MDT SUN JUN 24 2012/ TONIGHT THROUGH TUESDAY...SAME OLD PATTERN CONTINUES FOR THE FORECAST AREA THROUGH THE SHORT TERM. A DEEP UPPER LOW IS OVER THE PACIFIC NORTHWEST COAST WHILE A RIDGE REMAINS ENTRENCHED ALONG THE MONTANA-DAKOTAS BORDER. MODELS HAVE DONE A PRETTY TERRIBLE JOB HANDLING THE LOW CLOUDS IN NORTH CENTRAL MONTANA BUT SATELLITE IMAGERY CONTINUES TO SHOW THE CLOUD COVER ERODING FROM THE SOUTH. VERY UNSURE ABOUT THE CHANCE OF PRECIPITATION ACROSS NORTH CENTRAL MONTANA TONIGHT. THE GFS HAS A LARGE BULLSEYE OF QPF IN THIS REGION FOR THIS EVENING BUT THE OTHER MODELS REMAIN DRY...EXCEPT THEY ARE SHOWING QUITE A BIT OF INSTABILITY. HAVE GONE WITH A MENTION OF ISOLATED POPS OVERNIGHT BUT EXPECT THAT IF ANYTHING GETS GOING OVER THE WESTERN MOUNTAINS THIS AFTERNOON...THOSE STORMS COULD MOVE OUT OVER THE PLAINS AND CONTINUE WITH ELEVATED CONVECTION THROUGH MUCH OF THE NIGHT. PATTERN CONTINUES TO LOOK UNSETTLED WITH PERIODS OF SHOWERS AND THUNDERSTORMS EXPECTED MONDAY AFTERNOON AND EVENING. BEST LOCATION FOR POSSIBLE SEVERE STORMS WILL BE OVER EASTERN MONTANA MONDAY EVENING AND SOME OF THESE COULD EXTEND INTO MY NORTHEAST ZONES. HAVE LEFT MENTION OF SEVERE OUT OF THE FORECAST FOR NOW BUT WOULD NOT BE SURPRISED TO SEE MODELS AND/OR SPC INCREASE THE LIKELIHOOD BY TOMORROW MORNING. CORE OF THE UPPER LOW FINALLY SWINGS ACROSS THE NORTHERN ROCKIES AND INTO CANADA ON TUESDAY. WIDESPREAD RAIN IS EXPECTED OVER THE GLACIER PARK REGION AND HPC HAS PUT NORTHWEST MONTANA INTO THE EXCESSIVE RAINFALL OUTLOOK. MPJ TUESDAY NIGHT THROUGH SUNDAY...AN UPPER LEVEL LOW PRESSURE TROF WILL MOVE ACROSS THE NORTHERN ROCKIES INTO ALBERTA TUESDAY NIGHT. THE AIRMASS WILL BE UNSETTLED AND THUNDERSTORMS COULD CONTINUE INTO THE LATE EVENING. BRISK WINDS ASSOCIATED WITH THE SURFACE LOW IN CANADA WILL BRING COOLER AIR INTO REGION THROUGH WEDNESDAY. HIGH PRESSURE ALOFT WILL BE IN PLACE THURSDAY AND THE AIRMASS WILL BE DRY AND STABLE. A SHORTWAVE WILL CROSS THE ROCKIES THURSDAY NIGHT BUT WITH THE DRY AIRMASS THE CHANCE OF PRECIPITATION WILL REMAIN LOW. HIGH PRESSURE WILL REBUILD FRIDAY BUT ANOTHER SHORTWAVE WILL MOVE MOISTURE INTO THE RIDGE ON SATURDAY. THIS WILL BRING A CHANCE OF SHOWERS AND THUNDERSTORMS INTO THE AREA SATURDAY AND SUNDAY. ZELZER. && .PRELIMINARY POINT TEMPS/POPS... GTF 59 89 59 79 / 10 10 20 20 CTB 56 76 55 67 / 20 10 30 60 HLN 58 93 58 80 / 10 10 20 20 BZN 53 93 54 82 / 0 10 10 10 WEY 47 84 49 69 / 0 10 10 10 DLN 53 89 53 74 / 0 10 10 10 HVR 61 90 61 85 / 20 10 20 30 LWT 59 91 59 84 / 10 10 20 10 && .TFX WATCHES/WARNINGS/ADVISORIES... RED FLAG WARNING UNTIL MIDNIGHT MDT TONIGHT BROADWATER... CASCADE...CENTRAL AND SOUTHERN LEWIS AND CLARK...GALLATIN... JEFFERSON...MEAGHER. RED FLAG WARNING FROM NOON TO 9 PM MDT MONDAY BEAVERHEAD... BROADWATER...CASCADE...CENTRAL AND SOUTHERN LEWIS AND CLARK... GALLATIN...JEFFERSON...MADISON...MEAGHER. RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING BEAVERHEAD... MADISON. && WEATHER.GOV/GREATFALLS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREAT FALLS MT 434 PM MDT SUN JUN 24 2012 MTZ008-014-015-052-053-055-252245- BEAVERHEAD-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON-JEFFERSON- BROADWATER-GALLATIN- 434 PM MDT SUN JUN 24 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MONTANA. .DAY ONE...TONIGHT RED FLAG WARNING FOR LOW RELATIVE HUMIDITIES AND GUSTY WINDS IS IN EFFECT UNTIL MIDNIGHT. VERY WARM AND DRY CONDITIONS WILL BRING INCREASED FIRE DANGER OVER SOUTHWEST MONTANA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY VERY WARM AND DRY CONDITIONS WILL CONTINUE TO BRING INCREASED FIRE DANGER OVER SOUTHWEST MONTANA MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MTZ009>013-044>051-054-252245- NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-CASCADE- CHOUTEAU-TOOLE-LIBERTY-EASTERN PONDERA-BLAINE- SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-JUDITH BASIN-FERGUS- MEAGHER- 434 PM MDT SUN JUN 24 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...TONIGHT VERY WARM AND DRY CONDITIONS ARE EXPECTED ON SUNDAY AND MONDAY WITH HIGH TEMPERATURES REACHING THE UPPER 80S TO MID 90S OVER THE VALLEYS AND PLAINS. LOW HUMIDITIES WILL ALSO BRING AN INCREASE IN FIRE DANGER CONDITIONS BUT NO FIRE WEATHER HEADLINES ARE EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY VERY WARM AND DRY CONDITIONS ARE EXPECTED ON SUNDAY AND MONDAY WITH HIGH TEMPERATURES REACHING THE UPPER 80S TO MID 90S OVER THE VALLEYS AND PLAINS. LOW HUMIDITIES WILL ALSO BRING AN INCREASE IN FIRE DANGER CONDITIONS BUT NO FIRE WEATHER HEADLINES ARE EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1120 PM MDT SUN JUN 24 2012
MTZ011-250600-
HILL MT-
1120 PM MDT SUN JUN 24 2012
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HILL COUNTY UNTIL
MIDNIGHT MDT...
AT 1117 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 14 MILES NORTHEAST OF INVERNESS...OR 24 MILES
NORTHEAST OF CHESTER...MOVING NORTHEAST AT 20 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.
* LOCATIONS IMPACTED INCLUDE...
RURAL WESTERN HILL COUNTY...
RURAL NORTHWESTERN HILL COUNTY...
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 4900 11014 4862 11049 4871 11073 4901 11054
4901 11018
TIME...MOT...LOC 0520Z 207DEG 17KT 4875 11054
SUKThe Great Falls radar (KTFX), 177 km away, was scanning. The volume nearest the first event began at 05:49 UTC.
2 hail. Local standard time, as filed.
Golf ball sized hail was reported 24 miles N of Gildford. Vehicle damage was also reported as a result of the hail.
Gold ball sized hail of 1.75 inches was reported 21 miles N of Gildford.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2012Every state in 2012This day in weather historyWarnings in Montana, June 2012
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: 396898, 396899.