Another group of storms approached from the southwest over a very moist and unstable air mass.
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.
Another group of storms approached from the southwest over a very moist and unstable air mass.
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 19, 1:53 PM MST, 2 hours 18 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 253 PM MDT SUN JUN 19 2011 .SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH TUESDAY... CLOUD SHIELD THIS AFTERNOON HAS BEEN PREVENTING FULL DAYTIME HEATING AND THEREFORE LENGTHENING THE INITIATION TIMES OF CONVECTIVE SHOWERS AND THUNDERSTORMS TO LATER THIS EVENING. MAIN AREAS OF CONCERN ARE STILL ACROSS EASTERN SECTION OF THE CWA WHERE BEST LIFT IS LOCATED. BULK OF JET ENERGY AND LIFT HAS ALSO SLOWLY SHIFTED FURTHER SOUTH AND EAST OUT OF THE AREA WITH ONLY 200 TO 1200 J/KG CAPE LEFT AVAILABLE. LARGE SCALE TROUGH ORIENTED FROM UTAH TO CENTRAL MONTANA WILL ALSO VERY SLOWLY MOVE EAST. 850 MB TEMPERATURES WILL START AT A SPREAD OF 10 TO 13*C OVERNIGHT. MONDAY THROUGH TUESDAY... NORTHEASTERN MONTANA IS EXPECTED TO ENTER THE WESTERN SIDE OF THE LARGE SCALE TROUGH EXITING THE AREA. THIS WILL SLOWLY DIMINISH THE CHANCE OF RAIN SHOWERS FROM WEST TO EAST ACROSS THE REGION THROUGH TUESDAY. IT WILL ALSO ALLOW MORE SUNLIGHT TO FILTER INTO THE AREA AND RAISE 850MB TEMPS UP TO A RANGE OF 12*C TO 19*C. THAT WILL IN TURN WARM THE SURFACE INTO HIGHS AROUND THE MID 70S BY TUESDAY AND GIVE THE REGION A SMALL REPRIEVE TO DRY OUT. GAH .LONG TERM...TUESDAY NIGHT THROUGH SUNDAY... THE EXTENDED FORECAST RIDGING IS BUILDING INTO THE AREA WITH THE UPPER LOW OVER MINNESOTA CONTINUE TO TRACK INTO THE GREAT LAKES REGION. MODELS ARE IN FAIRLY GOOD AGREEMENT. THE RIDGE HOLDS IN UNTIL LATE ON THURSDAY WHEN A PACIFIC NORTHWEST UPPER LOW BEGINS TO KNOCK DOWN THE RIDGE AND BRING SOUTHWEST FLOW TO THE AREA. THIS WILL INCREASE THE PROBABILITY OF THUNDERSTORMS TO NORTHEAST MONTANA. THIS TREND WILL HOLD INTO NEXT WEEKEND. TEMPERATURES WILL CONTINUE WITH HIGHS MAINLY IN THE 70S WITH LOWS IN THE 50S. PROTON/EBERT && .AVIATION... SCATTERED SHOWERS WITH ISOLATED THUNDERSTORMS WILL BECOME MORE NUMEROUS DURING THE EVENING. OCCASIONAL MVFR OR EVEN IFR CONDITIONS ARE POSSIBLE THROUGH THE EVENING WITH THE STORMS AS HEAVY RAIN IS EXPECTED. RAE && .HYDROLOGY... FLOODING CONTINUES ON THE MILK RIVER FROM NEAR HINSDALE THROUGH NASHUA. FLUCTUATIONS ARE EXPECTED IN RIVER LEVELS THROUGH NEXT WEEKEND AS RUNOFF FROM RECENT RAINS MOVES INTO AND DOWN THE RIVER. HIGH WATER ALSO WILL CONTINUE ON STREAMS FEEDING INTO THE MILK RIVER FROM THE SOUTH INCLUDING PEOPLES CREEK...BEAVER CREEK AND WILLOW CREEK. TRIPLE CREEK RESERVOIR IN S VALLEY COUNTY IS IN DANGER OF FAILING...WHICH EMPTIES INTO LONE TREE CREEK...THEN INTO WILLOW CREEK. FLOODING ALSO CONTINUES ALONG THE MUSSELSHELL RIVER AND MANY CREEKS ACROSS PETROLEUM COUNTY. WATER RELEASES WILL CONTINUE FROM FORT PECK DAM AT AROUND 65K CFS. THE MISSOURI RIVER FROM BELOW THE DAM TO THE NORTH DAKOTA BORDER WILL CONTINUE TO REMAIN HIGH DUE TO THESE RELEASES COMBINED WITH THE WATER FLOWING FROM THE MILK RIVER. LITTLE CHANGE IN RIVER LEVEL IS EXPECTED OVER THE NEXT WEEK. WIDESPREAD RAIN OF ONE TO THREE INCHES HAS OCCURRED ACROSS NORTHEASTERN MONTANA FRIDAY. THIS HAS RESULTED IN HIGH WATER ALONG ROCK CREEK...THE POPLAR RIVER AND BIG MUDDY CREEK...AS WELL AS OTHER SMALLER CREEKS ACROSS THE REGION. THE WEATHER PATTERN REMAINS SOMEWHAT ACTIVE WITH PERIODS OF RAIN...SOMETIMES LOCALLY HEAVY...THROUGH NEXT WEEK. WITH WIDESPREAD SATURATED GROUND FROM RECENT RAINS...FLASH FLOODING WILL BE POSSIBLE FROM ANY HEAVY RAIN STORMS THAT DEVELOP. A FLASH FLOOD WATCH HAS BEEN ISSUED FOR THIS AFTERNOON THROUGH MONDAY MORNING FOR MUCH OF THE REGION IN ANTICIPATION OF THE NEXT STORM SYSTEM LIFTING INTO THE CENTRAL PLAINS. && .CLIMATE... 2011 RAINFALL THROUGH JUNE 18TH IN GLASGOW IS ON A RECORD PACE AT 14.81 INCHES. IT IS CERTAIN TO BE THE WETTEST FIRST HALF OF THE YEAR EVER...THE RECORD BEING 14.92 INCHES IN 1906. THERE HAVE BEEN 4 TIMES SO FAR THIS YEAR WHEN AN INCH OR MORE OF RAIN HAS FALLEN IN ONE DAY. THE RECORD FOR THE ENTIRE YEAR IS 5 DAYS...IN 1906 AND 1923. JUNE RAINFALL OF 4.42 INCHES IS ALREADY MORE THAN DOUBLE THE NORMAL FOR THE ENTIRE MONTH. IT IS EXPECTED ALSO THAT JUNE WILL BE THE 8TH MONTH IN A ROW TO BE COOLER THAN NORMAL...7 OF THOSE 8 MONTHS ALSO BEING WETTER THAN NORMAL. SIMONSEN && .GLASGOW WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH MONDAY MORNING FOR CENTRAL AND SOUTHERN VALLEY...DANIELS...SHERIDAN...WESTERN ROOSEVELT... MCCONE...RICHLAND...DAWSON...PRAIRIE...WIBAUX...NORTHERN VALLEY...EASTERN ROOSEVELT. && WEATHER.GOV/GLASGOW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 248 PM MDT SUN JUN 19 2011 MTZ017>020-023>027-061-062-201100- CENTRAL AND SOUTHERN VALLEY-DANIELS-SHERIDAN-WESTERN ROOSEVELT- MCCONE-RICHLAND-DAWSON-PRAIRIE-WIBAUX-NORTHERN VALLEY- EASTERN ROOSEVELT- 248 PM MDT SUN JUN 19 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A FLASH FLOOD WATCH IS IN EFFECT THROUGH NOON MONDAY. STRONG...SLOW- MOVING THUNDERSTORMS ARE EXPECTED TO BRING THE POTENTIAL FOR HEAVY AMOUNTS OF RAIN IN A SHORT PERIOD OF TIME TONIGHT. FLOOD WARNINGS CONTINUE ON THE MILK AND MISSOURI RIVERS FROM TAMPICO IN VALLEY COUNTY...EASTWARD TO THE NORTH DAKOTA BORDER. FLOOD WARNINGS FOR SMALL STREAMS REMAIN IN EFFECT FOR MANY OTHER LOCATIONS NORTH OF THE MISSOURI RIVER. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY 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. MTZ016-059-060-201100- CENTRAL AND SOUTHEAST PHILLIPS-NORTHERN PHILLIPS- SOUTHWEST PHILLIPS- 248 PM MDT SUN JUN 19 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT SLOW-MOVING SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND EVENING... AND AFFECT THE AREA INTO MONDAY. SOME ISOLATED POCKETS OF FLASH FLOODING MAY BE POSSIBLE. FLOOD WARNINGS REMAIN IN EFFECT FOR MANY SMALL CREEKS AND STREAMS IN CENTRAL PHILLIPS COUNTY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY 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. MTZ021-022-201100- PETROLEUM-GARFIELD- 248 PM MDT SUN JUN 19 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT SLOW-MOVING SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND EVENING... AND AFFECT THE AREA INTO MONDAY. SOME ISOLATED POCKETS OF FLASH FLOODING MAY BE POSSIBLE. FLOOD WARNINGS FOR SMALL STREAMS REMAIN IN EFFECT FOR THE MUSSELSHELL RIVER IN GARFIELD AND PETROLEUM COUNTIES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY 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.
The Glasgow radar (KGGW), 197 km away, was scanning. The volume nearest the first event began at 23:10 UTC.
1 funnel cloud, 1 heavy rain, 1 flash flood. Local standard time, as filed.
Several people contacted Richland County Dispatch to report seeing a funnel cloud near this location around the same time.
Accumulated 3 inches of rain in only 45 minutes.
When the person arrived at home, the creek near his home was out of its banks and water was running down the hills and through his yard. One hour later, water was still running through the yard. The site accumulated 1.10 of rain from this storm.
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: 329449, 329453, 329445.