On June 4, a strong cold front moved southeast across the area and produced several strong to severe thunderstorms over Western and Southwestern Montana during the late afternoon and evening hours.
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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 MSO wrote it up.
On June 4, a strong cold front moved southeast across the area and produced several strong to severe thunderstorms over Western and Southwestern Montana during the late afternoon and evening hours.
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 4, 1:28 PM MST, 2 hours 44 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 228 PM MDT MON JUN 4 2007 .DISCUSSION...UPPER RIDGE AND SURFACE THERMAL TROUGH ARE SLOWLY SLIDING EAST ACROSS THE NORTHERN ROCKIES THIS AFTERNOON. BEST INSTABILITY APPEARS TO BE JUST AHEAD OF THE INCOMING CLOUD SHIELD NEAR THE RIDGE AXIS AND OVER THE BEST SURFACE CONVERGENCE. AT MID AFTERNOON THIS AREA EXTENDED FROM SOUTH CENTRAL IDAHO COUNTY NORTH THROUGH THE PANHANDLE. RADAR INDICATED MODERATELY STRONG STORM SIGNATURES ALREADY IN SOUTHERN IDAHO COUNTY. MORE ISOLATED CONVECTION IS DEVELOPING ACROSS SOUTHWEST MONTANA. THE INSTABILITY AND WEATHER FEATURES WILL SPREAD OVER WESTERN MONTANA THIS EVENING. EXPECT THE STORMS TO LINGER PAST DARK IN WESTERN MONTANA AS THERE APPEARS TO BE SUFFICIENT LIFT WITH THE THERMAL TROUGH AND A WEAK UPPER DISTURBANCE BEHIND THE RIDGE AXIS TO OFFSET THE LOSS OF SURFACE HEATING. FOR TUESDAY...A FRONT WILL PRECEDE THE INCOMING UPPER TROUGH...MOVING INTO NORTHERN IDAHO AND EXTREME NORTHWEST MONTANA IN THE MORNING...THEN THROUGH WESTERN MONTANA IN THE AFTERNOON. ALONG WITH WIDESPREAD SHOWERS...COULD BE SOME THUNDERSTORM ACTIVITY WITH THE FRONT. HOWEVER...THE AIR MASS WILL STABILIZE RAPIDLY BEHIND THE FRONT. TEMPERATURES WILL BE SUBSTANTIALLY COOLER TUESDAY WITH THE AIR MASS CHANGE BEHIND THE FRONT AND ALSO DUE TO SHOWERS. THE UPPER LOW WILL MOVE IN TUESDAY NIGHT AND WEDNESDAY WITH THE POTENTIAL FOR COPIOUS AMOUNTS OF WRAP AROUND RAIN DEVELOPING. HAVE INCREASED RAIN CHANCES AND AMOUNTS MOST AREAS...BUT IT LOOKS LIKE THE FOCUS WILL BE OVER WESTERN MONTANA. VALLEY TEMPERATURES WILL BE WELL BELOW NORMAL FOR EARLY JUNE...AND HIGHER MOUNTAIN TEMPERATURES WILL ALLOW SNOW TO ACCUMULATE. THURSDAY THROUGH MONDAY...THE THROUGH MOVES OFF TO THE SOUTHEAST ON THURSDAY WITH SOME LINGERING SHOWERS. AFTER THE TROUGH MOVES OFF WESTERN MONTANA AND NORTH CENTRAL IDAHO ARE UNDER A ZONAL FLOW WITH SOME WEAK DISTURBANCES MOVING ACROSS THE REGION EACH DAY. NOT CONFIDENT ENOUGH TO TRY TO TIME THE DISTURBANCES SO HAVE KEPT A MENTION OF SLIGHT CHANCE TO LOW CHANCE SHOWERS IN THE FORECAST THROUGH MONDAY. TEMPERATURES REMAIN SLIGHTLY BELOW NORMAL THOUGH THE EXTENDED FORECAST. && .AVIATION...WIDESPREAD SHOWERS AND ISOLATED TO SCATTERED EMBEDDED THUNDERSTORMS WILL ADVANCE INTO NORTHERN IDAHO AND WESTERN MONTANA THIS AFTERNOON AND EVENING. SOME STORMS COULD BE MODERATELY STRONG WITH SMALL HAIL AND BRIEF HEAVY SHOWERS. NO SIGNIFICANT WEATHER IMPACT TO AVIATION EXPECTED...SEE APPROPRIATE TAFS AND TWEBS. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...NONE. ID...NONE. && SHORT TERM...WHITMORE LONG TERM....KOLATA AVIATION...WHITMORE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MISSOULA MT 153 AM MDT MON JUN 4 2007 IDZ005>010-MTZ001>007-043-051200- NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-KOOTENAI/CABINET REGION- WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- LOWER CLARK FORK REGION-MISSOULA/BITTERROOT VALLEYS- BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION- POTOMAC/SEELEY LAKE REGION- 153 AM MDT MON JUN 4 2007 /1253 AM PDT MON JUN 4 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO...NORTHWEST MONTANA AND WEST CENTRAL MONTANA. .DAY ONE... TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AS A COLD FRONT MOVES TO THE SOUTHEAST...ACROSS THE AREA. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A SIGNIFICANT COOL DOWN WILL BEGIN TONIGHT. BY WEDNESDAY AFTERNOON...TEMPERATURES WILL BE ABOUT 30 DEGREES LOWER THAN MONDAYS HIGH TEMPERATURES. SNOW LEVELS ARE EXPECTED TO FALL TO BE BETWEEN 6000 AND 7000 FEET ON WEDNESDAY AND WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Missoula radar (KMSX), 79 km away, was scanning. The volume nearest the first event began at 23:10 UTC.
2 thunderstorm wind. Local standard time, as filed.
Severe Thunderstorm downdraft winds blew several large trees down 5 miles west of Superior.
Estimated Severe Thunderstorm downdraft winds of 60 mph were reported in both the Nine Mile area and in Missoula. The winds broke several large branches off of trees in Missoula.
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, June 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: 29685, 29687.