Record releases from the Fort Peck Dam with contributing flow from the Milk River combined to produce flooding on the Missouri River. A scheduled release of 65,000 cfs from Fort Peck Dam occurred from June 11 to 14, which exceeded the previous record release of 34,500 cfs.
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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.
Record releases from the Fort Peck Dam with contributing flow from the Milk River combined to produce flooding on the Missouri River. A scheduled release of 65,000 cfs from Fort Peck Dam occurred from June 11 to 14, which exceeded the previous record release of 34,500 cfs.
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 5, 8:23 AM MST, 4 hours 53 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE GLASGOW MT 923 AM MDT SUN JUN 5 2011 .SHORT TERM...FOR NORTHEAST MONTANA...TODAY THROUGH TUESDAY... UPDATE SENT THIS MORNING MAINLY TO TWEAK TEMPERATURES JUST A BIT AND TO REMOVE SOME MORNING WORDING IN THE ZONE FORECAST PRODUCT. SOME SPATIAL VARIABILITY WILL EXIST TODAY FOR SUNNY VERSUS PARTLY CLOUDY SKIES WITH UPPER LEVEL CLOUDS. WITH PEAK HEATING THIS AFTERNOON AND EVENING...CLOUDINESS WILL INCREASE THE MOST OVER OUR SOUTHEASTERN ZONES AS CONVECTIVE SHOWERS DEVELOP OVER SOUTHWESTERN NORTH DAKOTA AND NORTHWESTERN SOUTH DAKOTA. I KEPT POPS HIGH SILENT THERE...BUT A SPRINKLE OR TWO MAY SNEAK INTO SOUTHEASTERN WIBAUX COUNTY. BMICKELSON GOES SATELLITE IMAGERY THIS MORNING REVEALS A STACKED LOW LOCATED OVER HUDSON BAY. THE CYCLONIC FLOW ALOFT IS MAINTAINING WESTERLY FLOW ALOFT INTO EASTERN MONTANA. WITH THE STATIONARY BOUNDARY WELL TO OUR NORTH IN SASKATCHEWAN TODAY WILL BE MOSTLY SUNNY AND WARM. THROUGH THE DAY TODAY THE STACKED LOW OFF THE CALIFORNIA COAST MOVES CLOSER TO THE COAST SENDING MOIST FLOW ALOFT TO THE NORTH. THE LOW MOVES ONSHORE MONDAY CONTINUING TO DIRECT THIS PACIFIC MOISTURE NORTH. UPPER FLOW OVER EASTERN MONTANA THEN BEGINS TO BACK TO THE SOUTHWEST. BY MONDAY EVENING AN INVERTED SURFACE TROUGH NUDGES NORTH INTO NEMONT PROVIDING SIGNIFICANT INSTABILITY AS THE FRONT INITIATES THE FIRST ROUND OF RAIN SHOWERS. WITH THE JET AT THE BASE OF THE TROUGH AIMED DIRECTLY AT NEMONT...QPF MONDAY NIGHT RANGES FROM A HALF TO AN INCH. ASSOCIATED WITH THIS STORM ARE STRONG CONVECTIVE PARAMETERS WHICH WILL LEAD TO THUNDERSTORM ACTIVITY. SOME STORMS IN THE REGION MAY BECOME SEVERE. SPC SUGGESTS THUNDERSTORM ACTIVITY COULD CONTINUE ALL NIGHT AND HAS PLACED THE REGION WITHIN THE AREA OF SLIGHT RISK FOR SEVERE THUNDERSTORMS. THE LOW CENTER TRAVELS NORTHEAST OVER NEMONT ON TUESDAY BRINGING WITH IT AN ADDITIONAL INCH OR MORE OF QPF. THIS STORM WILL ADD TO THE CURRENT FLOODING PROBLEMS. MONDAY NIGHT AND TUESDAY WILL ALSO SEE STRONG EASTERLY WINDS INITIALLY...25-35KTS...THEN BACKING TO THE NORTHEAST ON TUESDAY AS THE SURFACE LOW TRACKS OVER THE AREA. A WIND ADVISORY FOR FORT PECK LAKE WILL LIKELY BE NEEDED. TEMPERATURES SUNDAY COULD BE THE WARMEST DAY OF THE YEAR SO FAR. GFS AND NAM GUIDANCE SUGGEST TEMPERATURES IN THE UPPER 70S NEAR THE INTERNATIONAL BORDER TO THE UPPER 80S SOUTH OF THE YELLOWSTONE RIVER. INCREASING CLOUDINESS WILL COOL TEMPERATURES SLIGHTLY ON MONDAY. THEN AS THE STORM MOVES OVER THE AREA HIGHS ON TUESDAY TEMPERATURES WILL DROP BELOW NORMAL WITH MOST HIGHS IN THE UPPER 60S AND LOWER 70S. SCT .LONG TERM...TUESDAY NIGHT THROUGH SUNDAY... CLOSED UPPER LOW WILL MOVE NORTHEAST FROM EASTERN MONTANA TO MANITOBA TUESDAY NIGHT. RAIN WILL LINGER MOST OF THE NIGHT. WILL MAINTAIN LIKELY POPS IN MOST AREAS. SOME MOISTURE WILL LINGER ON WEDNESDAY WITH A SHORTWAVE MOVING THROUGH THE AREA. WILL MENTION A CHANCE OF SHOWERS FOR NOW. MODELS ARE HINTING AT A BREAK IN THE RAIN WEDNESDAY NIGHT AND THURSDAY MORNING WITH A SHORTWAVE RIDGE AHEAD OF THE NEXT UPPER LOW THAT MOVES INTO THE AREA THURSDAY NIGHT. NOT SURE AT THIS POINT IF AN ENTIRE FORECAST PERIOD WILL BE DRY. WILL MAINTAIN A CHANCE OF SHOWERS FOR NOW. ECMWF SOMEWHAT FASTER THAN THE GFS IN MOVING THIS LOW THROUGH THE AREA. WILL MAINTAIN A CHANCE OF SHOWERS FOR THIS SYSTEM THOUGH SATURDAY. MODELS VARY FROM ZONAL FLOW (ECMWF) TO SW FLOW ALOFT GOING INTO NEXT SUNDAY. WITH THE POSSIBILITY OF SHORTWAVES IN THE FLOW AND THE FACT THAT IT HAS BEEN A VERY WET RAINY SEASON SO FAR...WILL KEEP A CHANCE OF SHOWERS IN THE FORECAST. FORRESTER && .AVIATION... VFR. UPPER RIDGING AND DRIER AIR MOVING INTO THE REGION SHOULD KEEP LOW CLOUD DEVELOPMENT REDUCED FOR THE NEXT 24 HOURS. PROTON && .HYDROLOGY... FOR THE MILK AND MUSSELSHELL BASINS...EXPECT ONGOING FLOODING OF MAIN STEM RIVERS AND SMALLER STREAMS AND CREEKS DUE TO CONTINUED RUNOFF FROM RECENT HEAVY RAIN AND MOUNTAIN SNOW-MELT. FLOOD WARNINGS ARE IN EFFECT. THE MISSOURI RIVER BELOW FORT PECK DAM WILL SEE A SUBSTANTIAL RISE IN WATER LEVELS THROUGH THE WEEKEND AND NEXT WEEK DUE TO INCREASING AMOUNTS OF WATER BEING RELEASED FROM THE FORT PECK RESERVOIR. A FLOOD WATCH REMAINS IN EFFECT FOR THIS AREA. WIDESPREAD RAIN WILL IMPACT THE AREA BETWEEN MONDAY NIGHT AND WEDNESDAY WHICH WILL MAINTAIN THE CURRENT FLOODING AND POSSIBLY CREATE NEW FLOODING IN SOME AREAS DEPENDING ON HOW MUCH RAIN FALLS. && .GLASGOW WATCHES/WARNINGS/ADVISORIES... FLOOD WATCH FROM 6 PM MDT THIS EVENING THROUGH TUESDAY AFTERNOON FOR CENTRAL AND SOUTHERN VALLEY...WESTERN ROOSEVELT...MCCONE... RICHLAND...EASTERN ROOSEVELT. && WEATHER.GOV/GLASGOW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 314 AM MDT SUN JUN 5 2011 MTZ016-017-059-061-060900- CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY- NORTHERN PHILLIPS-NORTHERN VALLEY- 314 AM MDT SUN JUN 5 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...TODAY AND TONIGHT FLOODING CONTINUES ON SMALL STREAMS IN VALLEY AND PHILLIPS COUNTIES...AND ALONG THE MILK RIVER FROM JUST BELOW SACO TO THE CONFLUENCE WITH THE MISSOURI RIVER. FLOODING IS EXPECTED ON THE MISSOURI RIVER AS THE ARMY CORPS OF ENGINEERS INCREASES RELEASES FROM FORT PECK RESERVOIR. THEREFORE A FLOOD WATCH HAS BEEN ISSUED ON THE MISSOURI RIVER FROM DOWNSTREAM OF FORT PECK DAM THROUGH THE NORTH DAKOTA BORDER. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A STORM SYSTEM MOVING OVER THE AREA MONDAY NIGHT AND TUESDAY WILL BRING STRONG WINDS...HEAVY RAINS AND THUNDERSTORMS...SOME POSSIBLY SEVERE. A LAKE WINDS ADVISORY WILL LIKELY BE NECESSARY. THE WIDESPREAD RAIN IMPACTING THE AREA BETWEEN MONDAY NIGHT AND WEDNESDAY WILL LIKELY MAINTAIN THE CURRENT FLOODING AND POSSIBLY CREATE NEW FLOODING IN SOME AREAS DEPENDING ON HOW MUCH RAIN FALLS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ021-022-060900- PETROLEUM-GARFIELD- 314 AM MDT SUN JUN 5 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...TODAY AND TONIGHT FLOODING WILL CONTINUE ALONG THE MUSSELSHELL RIVER AND SOME SMALL STREAMS THROUGH THE WEEK. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A STORM SYSTEM MOVING OVER THE AREA MONDAY NIGHT AND TUESDAY WILL BRING STRONG WINDS...HEAVY RAINS AND THUNDERSTORMS...SOME POSSIBLY SEVERE. A LAKE WINDS ADVISORY WILL LIKELY BE NECESSARY. THE WIDESPREAD RAIN IMPACTING THE AREA BETWEEN MONDAY NIGHT AND WEDNESDAY WILL LIKELY MAINTAIN THE CURRENT FLOODING AND POSSIBLY CREATE NEW FLOODING IN SOME AREAS DEPENDING ON HOW MUCH RAIN FALLS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ020-023-024-062-060900- WESTERN ROOSEVELT-MCCONE-RICHLAND-EASTERN ROOSEVELT- 314 AM MDT SUN JUN 5 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...TODAY AND TONIGHT FLOODING IS EXPECTED ON THE MISSOURI RIVER AS THE ARMY CORPS OF ENGINEERS INCREASES RELEASES FROM FORT PECK RESERVOIR. THEREFORE A FLOOD WATCH HAS BEEN ISSUED OR THE MISSOURI RIVER FROM DOWNSTREAM OF FORT PECK DAM THROUGH THE NORTH DAKOTA BORDER. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A STORM SYSTEM MOVING OVER THE AREA MONDAY NIGHT AND TUESDAY WILL BRING STRONG WINDS...HEAVY RAINS AND THUNDERSTORMS...SOME POSSIBLY SEVERE. A LAKE WINDS ADVISORY WILL LIKELY BE NECESSARY. THE WIDESPREAD RAIN IMPACTING THE AREA BETWEEN MONDAY NIGHT AND WEDNESDAY WILL LIKELY MAINTAIN THE CURRENT FLOODING AND POSSIBLY CREATE NEW FLOODING IN SOME AREAS DEPENDING ON HOW MUCH RAIN FALLS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ018-019-025>027-060-060900- DANIELS-SHERIDAN-DAWSON-PRAIRIE-WIBAUX-SOUTHWEST PHILLIPS- 314 AM MDT SUN JUN 5 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A STORM SYSTEM MOVING OVER THE AREA MONDAY NIGHT AND TUESDAY WILL BRING STRONG WINDS...HEAVY RAINS AND THUNDERSTORMS...SOME POSSIBLY SEVERE. A LAKE WINDS ADVISORY WILL LIKELY BE NECESSARY. THE WIDESPREAD RAIN IMPACTING THE AREA BETWEEN MONDAY NIGHT AND WEDNESDAY WILL LIKELY MAINTAIN THE CURRENT FLOODING AND POSSIBLY CREATE NEW FLOODING IN SOME AREAS DEPENDING ON HOW MUCH RAIN FALLS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The national radar mosaic for the moment the first event began.
4 flood. Local standard time, as filed.
Minor flooding was occurring at Wolf Point where stages exceeded Flood Stage by about 1.5 feet (estimated from the river gauge at Wolf Point). Flooding of Highway 480 north of the Poplar bridge occurred.
Minor flooding was occurring at Wolf Point where stages exceeded Flood Stage by about 1.5 feet (estimated from the river gauge at Wolf Point).
Minor flooding was occurring at Wolf Point where stages exceeded Flood Stage by about 1.5 feet (estimated from the river gauge at Wolf Point).
Minor flooding was occurring at Wolf Point where stages exceeded Flood Stage by about 1.5 feet (estimated from the river gauge at Wolf Point).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2011Every state in 2011This day in weather historyWarnings in Montana, June 2011
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: 322971, 322972, 322974, 322976.