Falling river levels on the Missouri occurred on the stretch from the Fort Peck dam eastward that ended on July 1.
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 GGW wrote it up.
Falling river levels on the Missouri occurred on the stretch from the Fort Peck dam eastward that ended on July 1.
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 30, 8:01 PM MST, 3 hours 59 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 901 PM MDT THU JUN 30 2011 .SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH SATURDAY... UPDATE...GOING FORECAST IN OVERALL GOOD SHAPE. BIGGEST CHANGES WERE TO LOWER WINDS AND TWEAK SKY COVER BASED ON THE LATEST OBSERVATIONS. STILL FEEL THERE IS ENOUGH POTENTIAL FOR ISOLATED SHOWERS ALONG THE FAR SOUTHERN TIER TO WARRANT MENTION IN THE FORECAST. TEMPERATURES ARE ON TRACK TO DIP INTO THE LOWER 50S UNDER CLEAR SKIES IN THE WEST...TO UPPER 50S UNDER CLOUD COVER IN THE EAST. GILCHRIST PREVIOUS DISCUSSION...NE MT IN A SW FLOW ALOFT REGIME TODAY THAT BECOMES MORE ZONAL AS A BROAD UPPER RIDGE BUILDS OVER THE CENTRAL AND WESTERN PORTION OF THE COUNTRY OVER THE WEEKEND. WEAK DISTURBANCES LOOK TO AFFECT BRUSH THE SOUTHEAST ZONES TONIGHT AND AGAIN SATURDAY AFTERNOON. PRECIP TYPE THOUGH FOR TONIGHT LOOKS MORE SHOWERY AS ATMOSPHERE LOOKS TO BE MORE STABLE WITH LI/S GREATER THAN ZERO WHILE UPPER ENERGY AND CAPE STAYS TO OUR SOUTH AND EAST. GREATEST QPF LOOKS TO OCCUR FRIDAY MORNING WITH UP TO A TENTH OF AN INCH POSSIBLE. KEPT POPS IN THE SLIGHT CHANCE CATEGORY. WITH SATURDAY/S DISTURBANCE...THE ATMOSPHERE LOOKS MORE UNSTABLE WITH CAPES REACHING 1000 J/KG IN OUR SOUTHEAST ZONES. SIDED MORE WITH THE WETTER GFS ON THIS DISTURBANCE AS ABUNDANT STANDING WATER AND VEGETATION SHOULD AID IN BETTER LOW LEVEL MOISTURE. JAMBA .LONG TERM...SATURDAY NIGHT THROUGH THURSDAY... A SUMMERY PATTERN FOR NE MT...WITH A LARGE UPPER HIGH OVER THE WESTERN STATES...AND FLAT W FLOW ALOFT FOR OUR AREA. THIS MEANS GENERALLY DRY WEATHER AND TEMPS AVERAGING ABOUT NORMAL. THE HIGH IS A LITTLE TOO FAR S TO COMPLETELY PROTECT AGAINST WEAK SHORTWAVES...WHICH IN UNSTABLE AIRMASSES THIS TIME OF YEAR WILL MEAN THERE WILL BE A LITTLE CONVECTION. THIS WILL BE MAINLY JUST A FEW VERY ISOLATED CELLS...LESS THAN 15 PCT POPS MOST PERIODS. THE EXCEPTION IS A COLD FRONT THAT ALL MODELS HAVE MOVING ACROSS OUR AREA LATE SUN NIGHT/MON. THICKNESSES AT LEAST APPROACH 580 DM SUNDAY...PROBABLY THE ONLY DAY THAT COULD REACH 90 OR SO. SIMONSEN PREVIOUS LONG TERM...SATURDAY NIGHT THROUGH SUNDAY NIGHT...LONG TERM BEGINS WITH A RIDGE ORIENTED FROM THE DESERT SOUTHWEST UP THROUGH THE GREAT BASIN AND INTO CENTRAL MONTANA AND A LARGE TROUGH OVER WESTERN BRITISH COLUMBIA. RIDGE WILL MAINTAIN THROUGH SUNDAY NIGHT ALLOWING SURFACE TEMPERATURES TO SLOWLY WARM UP. CONDITIONS SHOULD REMAIN DRY AND CLEAR TO PARTLY CLOUDY. MONDAY THROUGH MONDAY NIGHT... BRITISH COLUMBIAN TROUGH WILL DIVE SOUTH AND WEST THROUGH SOUTHERN ALBERTA AND CENTRAL MONTANA WITH THE BULK OF THE ENERGY RUNNING ALONG THE INTERNATIONAL BORDER. A COLD FRONT WILL DEVELOP IN RESPONSE AND BE CAPABLE OF GENERATING A FEW SHOWERS AND THUNDERSTORMS DURING THE AFTERNOON HOURS. TEMPERATURES SHOULD ALSO COOL TO SLIGHTLY BELOW SEASONAL NORMS FOR A SHORT TIME. TUESDAY ONWARD...LARGE SCALE RIDGE WITH HEAT EMANATING FROM THE GREAT BASIN AND DESERT SOUTHWEST WILL QUICKLY BOUNCE BACK ACROSS MONTANA. THIS WILL LEAD TO A SLOW WARMING TREND THROUGH MID WEEK WITH MOSTLY CLEAR TO PARTLY CLOUDY SKIES AND DRY CONDITIONS. ISOLATED AFTERNOON THUNDERSTORMS GENERATING OVER MOUNTAIN TERRAIN AND DYING AT SUNDOWN IS ALSO A POSSIBILITY IN THIS TYPE OF PATTERN. GAH && .AVIATION... VFR. AN UPPER LEVEL SHORTWAVE TROUGH SLIDING EAST OVER THE CANADIAN PRAIRIE TONIGHT AND FRIDAY WILL MAINTAIN A DRY WESTERLY FLOW ALOFT OVER NORTHEAST MONTANA FOR MOSTLY CLEAR SKIES. HIGH SURFACE PRESSURE IN THE WEST AND SOME MIXING WILL KEEP SURFACE WINDS NORTHWESTERLY AT 10 KTS TONIGHT AND 10-20KTS FRIDAY. SCT && .HYDROLOGY... THE RECENT STRETCH OF WARMER AND DRIER WEATHER HAS HELPED THE CREEKS AND STREAMS IN NORTHEAST MONTANA TO RECEDE AND REMAIN WITHIN THEIR BANKS. THE MUSSELSHELL AND MILK RIVERS CONTINUE TO RUN HIGHER THAN NORMAL BUT ARE FALLING TOO. ON THE MISSOURI RIVER...ONLY A COUPLE OF ROADS NEAR POPLAR ARE EXPERIENCING SOME MINOR FLOOD IMPACTS. THESE SHOULD BE DRY BY THE WEEKEND. THE USACE HAS REDUCED THE AMOUNT OF WATER RELEASED TO 50000 CFS. && .GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE. && WEATHER.GOV/GLASGOW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 251 PM MDT THU JUN 30 2011 MTZ020-024-062-011200- WESTERN ROOSEVELT-RICHLAND-EASTERN ROOSEVELT- 251 PM MDT THU JUN 30 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT THE FLOOD WARNING CONTINUES FOR THE MISSOURI RIVER FROM FORT PECK DAM TO THE NORTH DAKOTA BORDER. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ016-017-021>023-011200- CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY- PETROLEUM-GARFIELD-MCCONE- 251 PM MDT THU JUN 30 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT THE FLOOD WARNING CONTINUES FOR THE MISSOURI RIVER FROM FORT PECK DAM TO THE NORTH DAKOTA BORDER. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NORTHWEST WINDS WILL PICK UP ON FRIDAY ACROSS FORT PECK LAKE AT 20 TO 30 MPH IN THE AFTERNOON WHICH WOULD REQUIRE A LAKE WIND ADVISORY. .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 diminishing as river levels were falling.
Minor flooding was diminishing as river levels were falling.
Minor flooding was diminishing as river levels were falling.
Minor flooding was diminishing as river levels were falling.
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, July 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: 323967, 323968, 323969, 323970.