A cold air funnel was reported along with showers moving through Prairie into Dawson county.
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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 cold air funnel was reported along with showers moving through Prairie into Dawson county.
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 May 27, 2:10 PM MST, 1 hour 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 310 PM MDT MON MAY 27 2013 .SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH WEDNESDAY... MAIN CONCERN FOR THE SHORT TERM CONTINUES TO BE THE SHOWERS AND THUNDERSTORMS AFFECTING THE FORECAST AREA THIS EVENING HEADING INTO TONIGHT. A BROAD AREA OF STEADY SHOWERS AND EMBEDDED THUNDERSTORMS HAS BEEN PUSHING ACROSS PRAIRIE AND WIBAUX COUNTY AND HAS BEEN MOVING NORTHEASTWARD INTO EXTREME EASTERN MCCONE COUNTY AS WELL AS DAWSON AND RICHLAND COUNTIES. LOCALLY HEAVY RAINFALL IS POSSIBLE AS THIS PUSHES THROUGH AND CONTINUES TO LIFT NORTH AND EAST THROUGH TONIGHT. EXPECT THIS TO REACH DANIELS...SHERIDAN...AND ROOSEVELT COUNTY THIS EVENING. OUTSIDE OF THIS AREA SHOWERS AND THUNDERSTORMS HAVE BEEN POPPING UP ACROSS PHILLIPS AND PETROLEUM COUNTY AS WELL AS AREAS SOUTH OF THE CWA BORDER. THESE SHOWERS AND STORMS WILL CONTINUE TO BLOSSOM THROUGH THE REST OF THE DAY AND PUSH EASTWARD THROUGH THE OVERNIGHT. THROUGH THE EVENING SOME OF THESE STORMS MAY BECOME STRONG TO SEVERE...ESPECIALLY IN THE SOUTHEASTERN ZONES. HAIL AND SOME GUSTY WINDS WOULD BE THE PRIMARY THREAT IN THOSE AREAS. SOUNDINGS SHOW DECENT CAPE AND SHEAR IN THOSE LOCATIONS SO ONCE AGAIN FEEL PRETTY GOOD THAT IF STRONG TO SEVERE STORMS WERE TO OCCUR...THAT THE SOUTHEASTERN PORTIONS OF THE FORECAST REGION IS WHERE THEY WOULD BE EXPECTED. OVERNIGHT WITH THE LOSS OF DAYTIME HEATING THESE SHOWERS AND STORMS WILL DIMINISH IN INTENSITY BUT STILL PROVIDE SOME RAINFALL TO THE CWA. TUESDAY THROUGH WEDNESDAY...UPPER LEVEL SHORTWAVE LIFTS NORTHEASTWARD ON TUESDAY AND WILL BRING MUCH LOWER CHANCES FOR SHOWER AND THUNDERSTORM ACTIVITY. MAINTAINED CHANCES IN THE NORTH PRIMARILY AS SOME SHORTWAVE ENERGY THERE MAY LINGER. LARGE NEGATIVELY TILTED TROUGH EXTENDING FROM A CLOSED LOW ACROSS THE PACIFIC THROUGH THE NORTHWESTERN U.S. AND THE UPPER MIDWEST WILL HELP TO BRING A RETURN TO UNSETTLED CONDITIONS BEGINNING ON WEDNESDAY AS IT IS ASSOCIATED WITH VERY ABUNDANT PACIFIC MOISTURE. A SURFACE LOW WILL ALSO BEGIN TO DEVELOP ACROSS EASTERN COLORADO AND TRACK NORTHEASTWARD. THIS LOW WILL DRAW IN LOW LEVEL SOUTHEASTERLY WINDS HELPING TO PUMP IN PLENTY OF GULF OF MEXICO MOISTURE AS WELL. IN A NUTSHELL...THE POTENTIAL EXISTS FOR A VERY HEAVY RAINFALL EVENT BEGINNING ON WEDNESDAY AFTERNOON AND EVENING. THE 12Z NAM...GFS...AND ECMWF ARE ALL CONVERGING ON THIS IDEA. THERE ARE STILL TIMING DIFFERENCES IN THE MODELS ON START TIME...HOWEVER...BY 00Z NEARLY THE ENTIRE CWA SHOULD BE UNDER THE INFLUENCE OF THIS SYSTEM. THEREFORE HAD NO PROBLEM WHATSOEVER RAISING POPS CONSIDERABLY AND INCLUDED A MENTION OF HEAVY RAIN SHOWERS WITH SOME THUNDER IN THE SOUTHERN ZONES. FUTURE SHIFTS MAY WANT TO CONSIDER LIFTING THE CATEGORICAL POPS EVEN FURTHER NORTH BY WEDNESDAY AFTERNOON AND/OR EVENING AS MODELS COME INTO BETTER ALIGNMENT WITH THEIR SOLUTIONS. MALIAWCO .LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY... FOCUS HAS BEEN ON CURRENT WEATHER TODAY SO NO CHANGES HAVE BEEN MADE TO THE LONG TERM. HAVE LOOKED AT THE MODELS THOUGH AND THE WET PERIOD CONTINUES THROUGH NEXT WEEKEND. TIMING AND EXACT LOCATIONS FOR HOW MUCH RAINFALL IS NOT IN AGREEMENT ON THE EXTENDED MODELS ALTHOUGH ALL OF THEM HAVE SOME ACCUMULATING MOISTURE AT SOME POINT OR ANOTHER. IT DOES LOOK LIKE WEDNESDAY NIGHT INTO FRIDAY MORNING COULD BRING SOME SIGNIFICANT MOISTURE TO THE AREA AND THE LIKELY POPS THE MID SHIFT HAS THERE LOOKS GOOD. FRANSEN MIDNIGHT SHIFT DISCUSSION FOR THE LONG TERM...A NEGATIVELY TILTED UPPER TROUGH MOVES INTO THE AREA ON WEDNESDAY AND IT BECOMES A CLOSED UPPER LOW DURING THE DAY ON THURSDAY OVER EASTERN MONTANA. THIS LOW WHICH WILL BE STACKED WITH A SURFACE LOW OVER WESTERN NORTH DAKOTA WILL BRING COPIUS AMOUNTS OF MOISTURE OVER THE FORECAST AREA WEDNESDAY NIGHT AND THURSDAY. THERE IS A POSSIBILITY OF WIDESPREAD HEAVY RAIN. THE UPPER LOW MOVES SLOWLY EAST INTO NORTH DAKOTA THURSDAY NIGHT. AT THIS POINT...MODELS DIFFER SOMEWHAT ON WHERE TO HAVE THE DEEP MOISTURE AS THE GFS KEEPS IT IN EASTERN MONTANA WHILE THE ECMWF LIFTS IT NORTH INTO CANADA. THE DIFFERENCE FOR THE FORECAST AREA IS WHETHER IT WILL BE LIGHT RAIN OR HEAVY RAIN. THE ECWMF IS SLOWER THAN THE GFS TO MOVE THE LOW TO THE EAST ON FRIDAY. WILL BROADBRUSH LIKELY POPS FROM WEDNESDAY NIGHT THROUGH THURSDAY NIGHT AND GO HIGH CHANCE POPS ON FRIDAY. MAY SEE A BREAK IN THE RAIN ON SATURDAY AS BOTH THE GFS AND ECMWF HAVE A SHORTWAVE RIDGE OVER THE AREA. HOWEVER...GIVEN THE MODELS RUN TO RUN TIMING DIFFERENCES...NOT READY TO GO WITH A DRY FORECAST. WILL MAINTAIN A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. SUNDAY AND NEXT MONDAY HAS THE MODELS TIMING SYSTEM DIFFERENTLY WITH ECMWF BRINGING THE NEXT SHORTWAVE TROUGH IN FASTER THAN THE GFS. WILL HAVE A CHANCE/SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. FORRESTER && .AVIATION... RESIDUAL MOISTURE FROM THE WEEKENDS STORMS HAS ALLOWED FOR SOME IFR CEILINGS AT KGGW AND KOLF THIS MORNING. SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL MOVE INTO AND DEVELOP IN NORTHEAST MONTANA TODAY. CONDITIONS WILL VARY FROM VFR TO IFR AS LOW CEILINGS AND REDUCED VISIBILITIES WILL OCCUR AT TIMES AND BRIEF HEAVY RAINFALL WITH THE STORMS. WINDS WILL BE ERRATIC NEAR STORMS BUT OTHERWISE ON THE LIGHTER SIDE TODAY. LOOK FOR MAINLY VFR CONDITIONS AFTER 03Z WITH MID LEVEL CLOUDS. SOME PATCHY FOG MAY DEVELOP AFTER 06Z WITH OCCASIONAL MVFR AND IFR VISIBILITIES. && .GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE. && WEATHER.GOV/GLASGOW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 330 PM MDT MON MAY 27 2013 MTZ016>027-059>062-281000- CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY- DANIELS-SHERIDAN-WESTERN ROOSEVELT-PETROLEUM-GARFIELD-MCCONE- RICHLAND-DAWSON-PRAIRIE-WIBAUX-NORTHERN PHILLIPS- SOUTHWEST PHILLIPS-NORTHERN VALLEY-EASTERN ROOSEVELT- 330 PM MDT MON MAY 27 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT AN UPPER LEVEL SYSTEM PUSHING ACROSS THE AREA WILL CONTINUE TO SET OFF SHOWERS AND THUNDERSTORMS THROUGH TONIGHT. SOME STORMS MAY BECOME SEVERE THIS AFTERNOON AND EVENING WITH LARGE HAIL AND DAMAGING WINDS...ESPECIALLY OVER DAWSON... WIBAUX... RICHLAND AND PRAIRIE COUNTIES. HEAVY RAIN IS ALSO POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY CONFIDENCE IS INCREASING ON A HEAVY RAIN EVENT FOR NORTHEAST MONTANA BEGINNING WEDNESDAY AFTERNOON...LINGERING THROUGH THURSDAY. THE POSSIBILITY EXISTS FOR SOME AREAS TO RECEIVE OVER AN INCH OF RAINFALL ACCUMULATION WITHIN A 24 HOUR PERIOD. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Glasgow radar (KGGW), 187 km away, was scanning. The volume nearest the first event began at 22:58 UTC.
1 funnel cloud. Local standard time, as filed.
A cold air funnel was reported by the county Disaster and Emergency Services Coordinator over the town of Terry, and it was further verified with several photographs. It only lasted a few minutes before dissipating.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2013Every state in 2013This day in weather historyWarnings in Montana, May 2013
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: 456949.