Slow moving thunderstorms dropped heavy rain over portions of east central Cass county. Most rainfall reports ranged from two to four inches.
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 FGF wrote it up.
Slow moving thunderstorms dropped heavy rain over portions of east central Cass county. Most rainfall reports ranged from two to four inches. This caused several roads to be shut down due to high water levels.
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 Grand Forks, ND wrote its last area forecast discussion before the first event at May 29, 11:12 PM CST, 2 hours 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND FORKS ND 1212 AM CDT THU MAY 30 2013 .UPDATE... ISSUED AT 1209 AM CDT THU MAY 30 2013 RAIN AREA FROM THE SOUTH ONCE AGAIN DIMINISHING AS IT MOVES NORTH SO SLOWED TIMING OF HIGHER POPS NORTHWARD. OTHERWISE LOCALLY 3 INCHES OF RAIN NORTH FARGO SINCE 6 PM SO ISSUED FLOOD ADV TIL 09Z FOR F-M AREA. && .SHORT TERM...(THIS EVENING THROUGH THURSDAY NIGHT) ISSUED AT 255 PM CDT WED MAY 29 2013 A LEAD SHORTWAVE COMING OFF THE MAIN TROUGH CONTINUES TO LIFT NORTHEASTWARD THROUGH THE DAKOTAS. THE SHORTWAVE ALONG WITH THE 850MB JET NOSING INTO THE AREA HAS HELPED SET OFF SHOWERS AND A FEW THUNDERSTORMS OVER MAINLY THE SOUTHERN CWA THIS AFTERNOON. CLOUDS AND COOLER TEMPS HAVE KEPT INSTABILITY MINIMIZED ACROSS THE SOUTHERN CWA BUT SPC MESOANALYSIS HAS SOME CAPE AROUND 1000 J/KG JUST TO THE NORTH ACROSS THE CENTRAL CWA. THE VERY UNSTABLE AIR IS STILL WELL TO OUR SOUTH OVER SD. MODELS HAVE THE CAPE INCREASING OVER OUR SOUTHERN CWA LATER THIS EVENING...BUT BULK SHEAR IS STILL ONLY AROUND 20 KTS. THINK THAT THERE WILL BE THE POSSIBILITY OF SOME SEVERE HAIL OR WINDS...BUT BETTER CHANCES WILL BE FURTHER SOUTH OR TOMORROW. THE SHORTWAVE WILL CONTINUE TO LIFT NORTHEASTWARD OVERNIGHT AND SPREAD RAINFALL TOWARDS THE CANADIAN BORDER. THE TROUGH ENTERING THE CENTRAL PLAINS TONIGHT WILL CLOSE OFF AND CONTINUE NORTHEASTWARD INTO THE WY/MT AREA AND WESTERN DAKOTAS BY TOMORROW. THE SFC LOW WILL CONTINUE TO DEEPEN AND LIFT INTO SOUTHERN ND...WITH A WARM FRONT PUSHING INTO THE CWA. HOW MUCH WE DESTABILIZE WILL DEPEND ON HOW MUCH CLEARING OCCURS TOMORROW AFTERNOON. THE NAM HAS AROUND 1300 J/KG IN SOME AREAS BUT LIKE TODAY HAS SOME PLACES WITH REDUCED INSTABILITY DUE TO CLOUDS AND PRECIP. THE GFS HAS A MORE WIDESPREAD AREA OF MORE THAN 1500 J/KG. BOTH MODELS HAVE MORE SIGNIFICANT SHEAR AND WITH THE SFC BOUNDARY IN THE AREA THINK THAT THERE WILL BE A GOOD CHANCE FOR SEVERE STORMS TOMORROW AFTERNOON AND EVENING. THE UPPER LOW WILL CONTINUE OVER THE DAKOTAS THURSDAY NIGHT...WITH THE BULK OF THE PRECIP MOVING INTO THE NORTHERN CWA DURING THE OVERNIGHT HOURS AS THE WARM FRONT MOVES TOWARDS THE CANADIAN BORDER. .LONG TERM...(FRIDAY THROUGH WEDNESDAY) ISSUED AT 255 PM CDT WED MAY 29 2013 FRIDAY...THE MODELS SEEM TO BE IN FAIRLY DECENT AGREEMENT ON THE DRY SLOT MOVING INTO THE SOUTHERN COUNTIES. LOWERED POPS A BIT IN THAT AREA. THE UPPER LOW WILL FINALLY BEGIN TO MOVE EASTWARD FRIDAY AND FRIDAY NIGHT. THIS WILL HELP PUSH THE SFC LOW INTO MN AND DROP A COLD FRONT INTO THE CWA. THE FRONT WILL BE THROUGH THE WESTERN CWA BY FRIDAY AFTERNOON AND ACROSS THE ENTIRE AREA FRIDAY NIGHT. INCREASED POPS AGAIN IN THE SOUTH AS THE COLD FRONT MOVES IN. TEMPS SHOULD DROP DOWN INTO THE 60S FOR HIGHS AND 40S TO LOW 50S FOR LOWS. EARLY IN THE PERIOD...SHORT WAVES WILL CONTINUE TO ROTATE AROUND UPPER LOW PROGGED TO BE OVER UPPER GREAT LAKES. THIS WILL CONTINUE CHANCES FOR RAIN SHOWERS THROUGH THE DAY SATURDAY. MODELS IN GENERAL AGREEMENT HOWEVER GFS PUTS ASSOCIATED SFC LOW FURTHER EAST. SHORT WAVE RIDGE THEN SETS UP FOR SUNDAY AND SHOULD SEE DRY WEATHER BEFORE NEXT ROUND OF SHOWERS/TSTMS MOVES IN AS AN UPPER LOW TRANSITS SOUTHERN SASK/MANITOBA. STILL SOME DIFFERENCES IN POSITION OF UPPER LOW (ECMWF FURTHER NORTH) HOWEVER SIMILAR SOLUTIONS FOR PLACEMENT OF PRECIP ACROSS OUR CWA MON NIGHT INTO TUE. CONSALL SOLUTION TRENDING TOWARD LIKELY POPS...WHICH SEEMS REASONABLE ALTHOUGH LIKELY TO WIDESPREAD THIS FAR OUT. AN ACTIVE PERIOD FOR NEXT WEEK NONETHELESS. && .AVIATION...(FOR THE 06Z TAFS THROUGH 06Z THURSDAY NIGHT) ISSUED AT 1209 AM CDT THU MAY 30 2013 TOUGH TAFS MAINLY IN IF AND WHEN ANY LOW CLOUDS WILL SPREAD NORTH LATE TONIGHT INTO THURSDAY MORNING. NOTHING NOW BUT OFTEN IN CASES OF LOW LEVEL MOIST ADV AND 850 MB TEMP/MOIST ADV WE DO GET THEM TO FORM IN THE 10Z-15Z PERIOD SO KEPT THAT IDEA OF MVFR CIGS AT ALL TAF SITES LATE TONIGHT THRU THUR MORNING. RAIN CHANCES AND SOME THUNDER FARGO NEXT FEW HOURS GRADUALLY SPREADS NORTH THOUGH THUNDER CHANCES AT GFK-TVF SEEM LESS THAN THOUGHT EARLIER. BEST CHC PROBABLY 12Z-15Z THU. WINDS WILL BE EASTERLY AND INCREASE TO 10 TO 25 KTS. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && UPDATE...RIDDLE SHORT TERM...JR LONG TERM...JR/SPEICHER AVIATION...RIDDLE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND FORKS ND 647 AM CDT WED MAY 29 2013 MNZ003-005-006-008-009-013>017-022>024-027>032-040-NDZ038-039-049- 052-053-301200- CLAY-ROSEAU-LAKE OF THE WOODS-EAST MARSHALL-NORTH BELTRAMI- PENNINGTON-RED LAKE-EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI- MAHNOMEN-SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN- WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-BARNES-CASS-RANSOM- SARGENT-RICHLAND- 647 AM CDT WED MAY 29 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED THIS AFTERNOON AND TONIGHT ROUGHLY SOUTH OF A LINE FROM COOPERSTOWN ND TO THOMPSON ND TO GUTHRIE MN. THE THUNDERSTORMS WILL BE MOST LIKELY AFTER 3 PM CDT. THE THUNDERSTORMS WILL PRODUCE SOME LARGE HAIL AND DAMAGING WINDS. ALSO A TORNADO MAY BE POSSIBLE. MOIST UNSTABLE AIR WILL MOVE NORTH INTO NORTH DAKOTA TODAY AND PRODUCE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A SLIGHT RISK OF SEVERE THUNDERSTORMS IS POSSIBLE ROUGHLY SOUTH OF A LINE FROM LEEDS ND TO WEBSTER ND TO HITTERDAL MN TO BATTLE LAKE MN ON THURSDAY. THE SEVERE T=STORMS WILL BE POSSIBLE FROM EARLY MORNING UNTIL SUNSET. LARGE HAIL...DAMAGING WINDS AND A TORNADO ARE POSSIBLE. MOIST UNSTABLE AIR WILL BE OVER THE AREA ON THU. AN UPPER LEVEL DISTURBANCE WILL AID IN THUNDERSTORM DEVELOPMENT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. MNZ001-002-004-007-NDZ006>008-014>016-024-026>030-054-301200- WEST POLK-NORMAN-KITTSON-WEST MARSHALL-TOWNER-CAVALIER-PEMBINA- BENSON-RAMSEY-EASTERN WALSH-EDDY-NELSON-GRAND FORKS-GRIGGS-STEELE- TRAILL-WESTERN WALSH- 647 AM CDT WED MAY 29 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED THIS AFTERNOON AND TONIGHT ROUGHLY SOUTH OF A LINE FROM COOPERSTOWN ND TO THOMPSON ND TO GUTHRIE MN. THE THUNDERSTORMS WILL BE MOST LIKELY AFTER 3 PM CDT. THE THUNDERSTORMS WILL PRODUCE SOME LARGE HAIL AND DAMAGING WINDS. ALSO A TORNADO MAY BE POSSIBLE. LOCALLY HEAVY RAIN CAN ALSO BE EXPECTED. MOIST UNSTABLE AIR WILL MOVE NORTH INTO NORTH DAKOTA TODAY AND PRODUCE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A SLIGHT RISK OF SEVERE THUNDERSTORMS IS POSSIBLE ROUGHLY SOUTH OF A LINE FROM LEEDS ND TO WEBSTER ND TO HITTERDAL MN TO BATTLE LAKE MN ON THURSDAY. THE SEVER T=STORMS WILL BE POSSIBLE FROM EARLY MORNING UNTIL SUNSET. LARGE HAIL...DAMAGING WINDS AND A TORNADO ARE POSSIBLE. ALSO LOCALLY HEAVY RAIN CAN BE EXPECTED. MOIST UNSTABLE AIR WILL BE OVER THE AREA ON THU. AN UPPER LEVEL DISTURBANCE WILL AID IN THUNDERSTORM DEVELOPMENT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. HOPPES
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1120 PM CDT WED MAY 29 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1100 PM HEAVY RAIN WEST FARGO 46.87N 96.90W
05/29/2013 M2.40 INCH CASS ND PUBLIC
RAINFALL SINCE 6 PM. STILL RAINING.
1111 PM HEAVY RAIN FARGO 46.88N 96.82W
05/29/2013 M2.55 INCH CASS ND PUBLIC
REPORT WAS FROM NORTHEAST SIDE OF FARGO - EDGEWOOD
NEIGHBORHOOD -- STILL RAINING. RAINFALL WAS SINCE 6 PM.
&&
DRIDDLEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1150 PM CDT WED MAY 29 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1149 PM HEAVY RAIN FARGO 46.88N 96.82W
05/29/2013 M1.00 INCH CASS ND BROADCAST MEDIA
REPORT FROM WDAY-TV. SINCE 6 PM.
&&
DRIDDLEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1151 PM CDT WED MAY 29 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1149 PM HEAVY RAIN HARWOOD 46.98N 96.88W
05/29/2013 M2.86 INCH CASS ND PUBLIC
MEASURED BY DAVIS PERSONAL WEATHER STATION. SINCE 6 PM.
&&
DRIDDLEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1156 PM CDT WED MAY 29 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1149 PM HEAVY RAIN 3 SW FELTON 47.05N 96.55W
05/29/2013 M1.21 INCH CLAY MN PUBLIC
MEASURED DAVIS WEATHER STATION. RAINFALL SINCE 6 PM.
&&
DRIDDLEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1214 AM CDT THU MAY 30 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1213 AM HEAVY RAIN FARGO 46.88N 96.82W
05/30/2013 M3.05 INCH CASS ND PUBLIC
AT NORTHEAST FARGO - EDGEWOOD NEIGHBORHOOD. SINCE 6 PM.
&&
DRIDDLEThe national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Many roads in Fargo were water covered and closed. Sections of 12th Avenue North from the 3900 to 4200 block were closed with two feet of water covering it. Street and basement flooding was also reported in West Fargo. Two to five inches of rain was reported in a short amount of time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Dakota in 2013Every state in 2013This day in weather historyWarnings in North Dakota, 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: 444954.