A broken line of strong to severe thunderstorms moved across northeast Montana ahead of an upper trough.
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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 GGW wrote it up.
A broken line of strong to severe thunderstorms moved across northeast Montana ahead of an upper trough.
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 Glasgow, MT wrote its last area forecast discussion before the first event at Jun 2, 1:52 PM MST, 5 hours 18 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 252 PM MDT MON JUN 2 2008 .SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH WEDNESDAY... AN UPPER LOW CONTINUES TO SLOWLY PUSH EAST THIS AFTERNOON AND IS CURRENTLY OVER EASTERN WASHINGTON AND NORTHERN IDAHO. UPPER SHORTWAVE CONTINUES TO LIFT NORTHEAST IN SOUTHWEST FLOW AHEAD OF THE UPPER LOW. THIS IS PRODUCING AREAS OF RAIN FROM GLASGOW NORTH AND EASTWARD. IN THE WAKE OF THE SHORTWAVE SCATTERED SHOWERS AND THUNDERSTORMS ARE DEVELOPING OVER CENTRAL MONTANA AS THE ATMOSPHERE IS DESTABILIZING. OVERALL THE ATMOSPHERE HAS REMAINED STABLE IN THE LOCAL FORECAST AREA...ALTHOUGH CURRENT SPC ANALYSIS DOES INDICATE SOME DESTABILIZATION IN THE FAR SOUTHWEST ZONES. TONIGHT...THE AREA OF RAINFALL IN THE NORTHEAST ZONES WILL CONTINUE TO LIFT TO THE NORTHEAST...WHILE THE CONVECTION TO THE WEST SLOWLY MOVES EAST. A FEW STRONG STORMS COULD WORK INTO THE SOUTHWEST ZONES THIS EVENING. THESE SHOWERS WILL DIMINISH IN INTENSITY AND INCREASE IN AREAL COVERAGE AS THE UPPER LOW INTERACTS WITH A SURFACE TROUGH. RAIN SHOWERS WILL CONTINUE THROUGH TUESDAY AS THE UPPER LOW APPROACHES THE LOCAL FORECAST AREA. BY TUESDAY NIGHT THE UPPER LOW WILL MOVE EAST AND RAIN SHOWERS WILL DIMINISH IN INTENSITY. ANOTHER WAVE WILL TRACK TO THE SOUTH OF THE CWA WEDNESDAY WITH ONLY SCATTERED SHOWERS EXPECTED. TEMPERATURES WILL REMAIN BELOW AVERAGE THROUGH THE SHORT TERM PERIOD. AJZ .LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY... NO SIGNIFICANT CHANGE TO THE EXTENDED FORECAST FOR THE AFTERNOON PACKAGE. COOL AND WET WEATHER EXPECTED WITH A SERIES OF UPPER TROFS MOVING ACROSS THE NORTHWEST STATES THROUGH NEXT WEEKEND. EBERT PREVIOUS LONG TERM DISCUSSION...MODELS AGREE ON AN UNSETTLED WEATHER PATTERN WITH AN UPPER TROUGH OR CLOSED LOW AFFECTING MONTANA WEDNESDAY NIGHT THROUGH THURSDAY NIGHT. THIS LOW MOVES TO THE EAST ON FRIDAY. ANOTHER UPPER TROUGH MOVES IN FOR THE WEEKEND WHICH IS FORECASTED TO PASS THROUGH EASTERN MONTANA ON SUNDAY. AFTER THE TROUGH PASSES ON SUNDAY...MODELS DIFFER BETWEEN THE GFS SOUTHWEST FLOW ALOFT WITH ANOTHER TROUGH TO THE WEST WHILE THE ECMWF WANTS TO BRING A FLAT RIDGE INTO THE AREA NEXT MONDAY. WITH RUN TO RUN DIFFERENCES SHOWING UP FROM SUNDAY AND BEYOND WILL NOT FORECAST WEATHER THAT IS SIGNIFICANT DIFFERENT FROM WHAT WILL PREVAIL THROUGH THE PERIOD. LOOK FOR BELOW NORMAL TEMPERATURES AND FREQUENT CHANCES FOR SHOWERS AND THUNDERSTORMS THROUGH THE PERIOD. FORRESTER && .AVIATION... LARGE AREA OF RAIN WITH MVFR TO OCCASIONAL IFR CONDITIONS WILL LIFTS NORTHEAST OF THE TAF SITES THROUGH THE LATE AFTERNOON. ANOTHER AREA OF RAIN SHOWERS WILL MOVE INTO NORTHEAST MONTANA LATE TONIGHT...WITH MVFR CONDITIONS AGAIN POSSIBLE THROUGH TUESDAY AFTERNOON. BETWEEN THESE SYSTEMS...THIS EVENING...ISOLATED THUNDERSTORMS ARE POSSIBLE WITH SUB VFR CONDITIONS AND GUSTY WINDS. RAE && .CLIMATE... MAY PRECIP IN GLASGOW TOTALED 3.46 INCHES...TWICE THE NORMAL...AND THE 11TH WETTEST ON RECORD. SIMONSEN && .GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE. && WEATHER.GOV/GLASGOW
The Billings radar (KBLX), 124 km away, was scanning. The volume nearest the first event began at 02:08 UTC.
1 hail. Local standard time, as filed.
Mostly pea size hail with a few penny size hailstones. One inch of rainfall was estimated in about 15 minutes.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2008Every state in 2008This day in weather historyWarnings in Montana, June 2008
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: 100454.