After up to five inches of rain fell over portions of Kittson County, tremendous amounts of water continued to move into the area river systems. Sheets of water covered many farm fields and roads into early June.
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.
After up to five inches of rain fell over portions of Kittson County, tremendous amounts of water continued to move into the area river systems. Sheets of water covered many farm fields and roads into early June.
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 30, 1:27 AM CST, 7 hours 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND FORKS ND 227 AM CDT SUN MAY 30 2010 .DISCUSSION... THE VERY MOIST AIRMASS WILL MOVE EAST TODAY AND BE REPLACED WITH MUCH DRIER AIR. MODELS IN DECENT AGREEMENT AND NO REAL PREFERENCE THIS MORNING. FOR TODAY...THE BEST CHANCE FOR SHOWERS AND A RUMBLE OF THUNDER WILL BE DURING THE MORNING. EXPECT CLEARING BY AFTERNOON WITH TEMPS BELOW NORMAL AND MUCH COOLER THAN YESTERDAY. PWATS WILL FALL FROM NEAR 1.5 INCHES IN THE NORTH THIS MORNING TO AROUND 0.5 BY LATE AFTERNOON. FOR TONIGHT...IT SHOULD DRY OUT WITH WESTERLY FLOW ALOFT MOVING IN. FOR MEMORIAL DAY...EXPECT A CHANCE OF SHOWERS TO THE NORTH DURING THE MORNING...WITH CYCLONIC/MOIST FLOW AND SOME INSTABILITY. PWATS JUMP BACK UP TO AROUND AN INCH BY AFTERNOON ALONG WITH LI/S TO AROUND -4C AND CAPES TO 500 J/KG. THERE WILL BE STRONG DEEP LAYERED SHEAR AS WELL...SO WILL ADD AN AFTERNOON MENTION OF THUNDER TO ALL AREAS AND CONTINUE IT THROUGH MONDAY EVENING. A FEW SHOWERS COULD CONTAIN BRIEF HEAVY DOWNPOURS IN THE NORTHERN VALLEY ALONG WITH THE THREAT FOR SOME HAIL AND PERHAPS A WIND GUST OR TWO. TEMPS SHOULD WARM MORE THAN SUNDAY WITH SOME WAA NEAR 850MB NEAR A SFC TROUGH THAT SHOULD FOCUS AFTERNOON CONVECTION. ON TUE...IT SHOULD BE A DRY DAY WITH WEAK HIGH PRESSURE RIDGING DOWN FROM CANADA. TEMPS WILL ALSO FALL BELOW NORMAL WITH NORTHERLY FLOW AND COOL 850MB TEMPS AROUND +2C IN THE NORTH AND +6C SOUTH. ON WED/THU...SEVERAL SHORTWAVES WILL MOVE THROUGH GENERAL WESTERLY FLOW ALOFT. THESE WAVES WILL BE HARD TO TIME SO WILL MENTION MAINLY CHANCES FOR THUNDER. THE LATEST MODEL RUNS APPEAR A BIT DRIER THOUGH AND THIS PERIOD COULD TURN OUT BEING QUITE DRY...AND THIS WILL NEED TO BE WATCHED WITH LATER RUNS. && .AVIATION... IFR/MVFR CONDITIONS THIS MORNING SHOULD GIVE WAY TO VFR CONDITIONS BY AFTERNOON. W/NW WINDS WILL GUST UP TO 30KT MAINLY DURING THE MORNING BEFORE SUBSIDING THIS EVENING. && .HYDROLOGY... MORE HEAVY RAIN HAS FALLEN OVER THE NORTHERN PORTION OF THE RED RIVER VALLEY. THE PEMBINA AND KITTSON COUNTY AREA HAVE BEEN HIT HARDEST...WITH UPWARDS OF 5 INCHES OF RAIN IN THE PAST 24 HOURS. THIS HAS PROMPTED 2 FLASH FLOOD WARNINGS FOR THESE AREAS. THIS HAS CAUSED SIGNIFICANT RISES ON THE PEMBINA RIVER POINT ON THE RED AND HALLOCK ON THE TWO RIVERS RIVER. A NEW WARMING FOR HALLOCK HAS BEEN ISSUED WITH MODERATE FLOODING NOW OCCURRING. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && DK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND FORKS ND 555 AM CDT SUN MAY 30 2010 MNZ004-NDZ008-311100- KITTSON-PEMBINA- 555 AM CDT SUN MAY 30 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT HEAVY RAIN HAS FALLEN OVER PEMBINA AND KITTSON COUNTY OVER THE PAST 24 HOURS. THIS WILL CAUSE SIGNIFICANT OVERLAND FLOODING...IN ADDITION TO RIVER RISES ALONG THE TWO RIVERS RIVER NEAR HALLOCK AND ON THE RED RIVER NEAR PEMBINA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE CHANCE FOR THUNDERSTORMS WILL RETURN ON MONDAY AFTERNOON. A FEW OF THESE STORMS MAY CONTAIN BRIEF HEAVY RAIN...SMALL HAIL AND GUST WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. MNZ001>003-005>009-013>017-022>024-027>032-040-NDZ006-007-014>016- 024-026>030-038-039-049-052>054-311100- WEST POLK-NORMAN-CLAY-ROSEAU-LAKE OF THE WOODS-WEST MARSHALL- 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-TOWNER-CAVALIER-BENSON-RAMSEY-EASTERN WALSH COUNTY- EDDY-NELSON-GRAND FORKS-GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM- SARGENT-RICHLAND-WESTERN WALSH COUNTY- 555 AM CDT SUN MAY 30 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED TODAY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE CHANCE FOR THUNDERSTORMS WILL RETURN ON MONDAY AFTERNOON. A FEW OF THESE STORMS MAY CONTAIN BRIEF HEAVY RAIN...SMALL HAIL AND GUST WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. DK
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
700 AM CDT SUN MAY 30 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0659 AM FLOOD LANCASTER 48.86N 96.80W
05/30/2010 KITTSON MN LAW ENFORCEMENT
MAJOR FLOOD ISSUES IN CITY OF LANCASTER. WATER OVER
HIGHWAY 59 SOUTH OF LANCASTER.
&&
DKELLENBThe national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2010Every state in 2010This day in weather historyWarnings in Minnesota, May 2010
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: 223544.