A thunderstorm produced a funnel cloud near Gilmore Summit.
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The episode as NWS MSO wrote it up.
A thunderstorm produced a funnel cloud near Gilmore Summit.
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 Missoula, MT wrote its last area forecast discussion before the first event at Jun 3, 1:50 PM MST, 3 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 250 PM MDT WED JUN 3 2009 ...HEAVY RAINFALL POSSIBLE IN PORTIONS OF NORTH CENTRAL IDAHO AND SOUTHWEST MONTANA...WITH WIND AND MOUNTAIN SNOW IN NORTHWEST MONTANA THE END OF THE WORK WEEK INTO THE WEEKEND... .DISCUSSION...STILL WATCHING MOISTURE FROM CALIFORNIA COAST LOW STREAMING EVERY SO SLIGHTLY NORTH TODAY. AGAIN...MAIN IMPACT THIS AFTERNOON AND EARLY EVENING WILL BE THE CENTRAL AND SOUTHERN CLEARWATERS AND LEMHI COUNTY. A SHORTWAVE CURRENTLY ROUNDING THE BASE OF THE CALIFORNIA LOW IS EXPECTED TO BRING A BETTER CHANCE OF THUNDERSTORMS THURSDAY AS IT GETS CAUGHT UP IN WEAK UPPER LEVEL FLOW OVER THE INTER-MOUNTAIN REGION. WITH PRECIPITABLE WATER VALUES APPROACHING ONE INCH ACROSS THE CLEARWATER MOUNTAINS THROUGH THE SOUTHERN BITTERROOTS AND BUTTE REGION AND POINTS SOUTH. ANY STORMS THAT DEVELOP HAVE TO POTENTIAL TO BE SLOW MOVING WITH HEAVY RAINFALL. THIS SCENARIO IS EXPECTED TO REPEAT ON FRIDAY AS THE CALIFORNIA LOW BEGINS TO MOVE INLAND USHERING IN EVEN MORE MOISTURE AND ENERGY TO NORTH CENTRAL IDAHO AND SOUTHWEST MONTANA. ACROSS THE NORTH...THE WEAK UPPER LEVEL FLOW AND DRY AIRMASS IN PLACE WILL MAKE FOR QUIET WEATHER UNTIL THE END OF THE WEEK. LATE FRIDAY...A BACK DOOR CANADIAN COLD FRONT WILL APPROACH THE DIVIDE AND INCREASE AN EAST TO WEST PRESSURE GRADIENT RESULTING IN STRONG NORTHEAST WINDS ACROSS GLACIER NATIONAL PARK AND THE NORTHERN FLATHEAD VALLEY. GUSTS OF 30 TO 40 MPH ARE POSSIBLE FRIDAY AFTERNOON AND EVENING THROUGH FAVORED CHANNELED VALLEYS...INCLUDING BAD ROCK CANYON. COLD AIR AND MOISTURE ASSOCIATED WITH THIS FRONT WILL SPREAD SHOWERS FROM NORTHEAST TO SOUTHWEST THROUGH THE EVENING. THE MODELS ARE ADVERTISING QUITE A BIT OF MOISTURE WITH THIS FEATURE...BUT BELIEVE THEY ARE OVERDONE A BIT. EXPECT A GOOD BURST OF RAIN ALONG AND JUST BEHIND THE FRONT...BUT EAST FLOW IS TYPICALLY DRYING FOR NORTHWEST MONTANA. BEST CHANCES FOR PRECIPITATION IN THE NORTHWEST WILL BE DETERMINED BY TIMING OF THE FRONT. IN THE HIGHER TERRAIN...ACCUMULATING SNOW IS VERY POSSIBLE OVER THE PASSES IN THE PARK FRIDAY NIGHT AND SATURDAY. A HAZARDOUS WEATHER OUTLOOK HAS BEEN ISSUED TO ACCOUNT FOR ALL THE ABOVE IMPACTS FOR THE REST OF THE WEEK INTO THIS WEEKEND. PLEASE SEE WWW.WEATHER.GOV/MISSOULA SATURDAY THROUGH SUNDAY A COLD UPPER LEVEL STORM SYSTEM MOVING OUT OF CANADA WILL BE DIRECTLY OVER THE NORTHERN ROCKIES REGION. AT THE SAME TIME...THE CUT OFF UPPER LOW WHICH HAS REMAINED STATIONARY OFF THE COAST OF CALIFORNIA WILL EJECT INLAND INTO THE GREAT BASIN AND INTER-MOUNTAIN WEST...PUMPING MOISTURE AND WAVES OF ENERGY THROUGHOUT THE WESTERN UNITED STATES AS IT MOVES ACROSS THE WESTERN STATES. THE INTERACTION OF THESE TWO UPPER LOWS AND A CANADIAN COLD FRONT WILL PRODUCE WIDESPREAD SHOWERS THROUGHOUT WESTERN MONTANA AND CENTRAL IDAHO. AT THIS TIME IT IS TOO HARD TO DETERMINE WHERE THE HEAVIEST PRECIPITATION WILL FALL. BUT GIVEN THE EASTERLY FLOW EXPECTED FROM THE CANADIAN LOW...WOULD EXPECT THE POTENTIAL FOR HEAVY PRECIPITATION TO EXIST ALONG THE CREST OF THE DIVIDE WITH DOWN SLOPING IN THE FLATHEAD/MISSION VALLEY. COLD AIR ASSOCIATED WITH THIS UPPER LOW WILL DROP SNOW LEVELS CONSIDERABLY AND THUS SNOW WILL BE POSSIBLE DOWN TO AROUND 5000 FEET BY SUNDAY MORNING WHICH COULD POSE A POTENTIAL IMPACT OVER MARIAS PASS AND THOSE RECREATING IN THE MOUNTAINS OF WESTERN MONTANA AND GLACIER NATIONAL PARK. ANOTHER REGION FOR POTENTIAL HEAVY PRECIPITATION WILL BE OVER CENTRAL IDAHO WHERE A STALLED FRONTAL BOUNDARY...UPPER LEVEL JET DYNAMICS AND WARM...SUP- TROPICAL AIR BROUGHT IN FROM THE CALIFORNIA LOW WILL INTERACT SATURDAY. THUNDERSTORMS ARE LIKELY OVER CENTRAL IDAHO WITH THE POTENTIAL FOR HEAVY RAINFALL AND FLASH FLOODING. THE WEATHER PATTERN FOR MONDAY THROUGH WEDNESDAY OF NEXT WEEK REMAINS SOMEWHAT IN QUESTION. THE GFS MOVES THE DEEP...UPPER LOW SLOWLY EAST INTO THE NORTHERN PLAINS WITH WESTERLY OR NORTHWESTERLY FLOW LEFT IN PLACE THROUGH THE REST OF THE WEEK. HOWEVER THE ECMWF MOVES THE MAIN ENERGY ASSOCIATED WITH THE UPPER LOW EAST WHILE DEVELOPING YET ANOTHER...YET WEAKER UPPER LOW WHICH APPEARS TO STAY IN PLACE UNTIL IT OPENS AND MOVES EAST LATE IN THE WEEK. REGARDLESS OF WHICH SOLUTION COMES TO FRUITION...COOLER...MORE NORMAL TEMPERATURES ALONG WITH A BETTER CHANCE FOR PRECIPITATION APPEARS TO BE IN THE MIX FOR NEXT WEEK. A WELCOME CHANGE FROM THE ABOVE NORMAL AND DRY CONDITIONS EXPERIENCED IN LATE MAY. && .AVIATION...A WEAK EASTERLY FLOW OVER NORTHWEST MONTANA IS KEEPING SKIES MOSTLY CLEAR...BUT HAS PRODUCED SOME GUSTY WINDS. THE SKY CONDITIONS WILL REMAIN THROUGH THE NIGHT WITH WINDS DECREASING AFTER SUNSET. ACROSS SOUTHWEST MONTANA AND NORTH CENTRAL IDAHO A MOIST SOUTHERLY FLOW IS PRODUCING SOME CLOUDS WITH SOME ISOLATED THUNDERSTORMS AROUND KSMN AND KBTM THIS EVENING. THUNDERSTORMS ARE NOT EXPECTED TO REACH AS FAR NORTH AS KMSO TODAY. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...NONE. ID...NONE. && SHORT TERM...MEAD LONG TERM....DICKERSON AVIATION...KOLATA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MISSOULA MT 156 PM MDT WED JUN 3 2009 IDZ006-008>010-041200- SOUTHERN CLEARWATER MOUNTAINS- LOWER HELLS CANYON/SALMON RIVER REGION-WESTERN LEMHI COUNTY- EASTERN LEMHI COUNTY- 156 PM MDT WED JUN 3 2009 /1256 PM PDT WED JUN 3 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE POTENTIAL EXISTS FOR STRONG THUNDERSTORMS TO DEVELOP THURSDAY AND FRIDAY AFTERNOONS AND EVENINGS...WHICH MAY PRODUCE QUICK BURSTS OF HEAVY RAIN. HEAVY RAINFALL THAT DEVELOPS COULD PRODUCE SMALL STREAM FLOODING AND DEBRIS FLOWS ALONG STEEP TERRAIN AND SEVERELY BURNED FOREST AREAS ALONG AND NEAR THE SALMON RIVER CORRIDOR. THE AREA POSSIBLY IMPACTED BY HEAVY RAINFALL AND FLOODING WOULD STRETCH FROM SOUTH OF SALMON ALL THE WAY TO NEAR WHITE BIRD. THE MAIN STEM SALMON RIVER IS NOT EXPECTED TO BE IMPACTED BY HEAVY RAIN AND RISING TO FLOOD STAGE. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ007-041200- BUTTE/BLACKFOOT REGION- 156 PM MDT WED JUN 3 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE POTENTIAL EXISTS FOR STRONG THUNDERSTORMS TO DEVELOP THURSDAY EVENING AND AGAIN FRIDAY AFTERNOON INTO SATURDAY MORNING...WHICH MAY PRODUCE QUICK BURSTS OF HEAVY RAIN. HEAVY RAINFALL THAT DEVELOPS MAY PRODUCE SMALL STREAM FLOODING TO SMALL CREEKS NEAR ANACONDA AND URBAN FLOODING IN THE STREETS OF BUTTE. THE RAINFALL THAT OCCURS IS NOT EXPECTED TO BRING ANY LARGER RIVERS TO FLOOD STAGE. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ002-003-041200- WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- 156 PM MDT WED JUN 3 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A LOW PRESSURE SYSTEM FROM CANADA IS EXPECTED TO BRING A COLDER AIRMASS TO THE AREA FRIDAY AFTERNOON INTO SATURDAY. AS THE COLDER AIRMASS MOVES OVER THE CONTINENTAL DIVIDE...GUSTY NORTHEAST WINDS OF 30 TO 40 MPH ARE POSSIBLE OVER GLACIER NATIONAL PARK AND THE NORTHERN FLATHEAD VALLEY FRIDAY AFTERNOON INTO EARLY SATURDAY BEFORE DIMINISHING LATE SATURDAY. IN ADDITION...ACCUMULATING SNOW ABOVE 5000 FEET OVER GLACIER NATIONAL PARK INCLUDING MARIAS PASS IS POSSIBLE FRIDAY NIGHT INTO EARLY SATURDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Pocatello radar (KSFX), 142 km away, was scanning. The volume nearest the first event began at 23:48 UTC.
1 funnel cloud. Local standard time, as filed.
A funnel cloud formed from a thunderstorm south of Gilmore Summit and moved towards Mud Creek before dissipating.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2009Every state in 2009This day in weather historyWarnings in Idaho, June 2009
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: 171765.