Flash flood conditions developed over portions of northwest North Dakota as slow moving and redeveloping thunderstorms moved over Burke County. Local law enforcement reported water flowing over roads southwest of Lignite.
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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 BIS wrote it up.
Flash flood conditions developed over portions of northwest North Dakota as slow moving and redeveloping thunderstorms moved over Burke County. Local law enforcement reported water flowing over roads southwest of Lignite.
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 Bismarck, ND wrote its last area forecast discussion before the first event at Jun 24, 2:39 PM CST, 2 hours 21 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BISMARCK ND 339 PM CDT FRI JUN 24 2011 .SHORT TERM...TONIGHT THROUGH SATURDAY NIGHT... MAIN FORECAST PROBLEM TODAY WILL BE PRECIPITATION CHANCES TONIGHT AND AGAIN SATURDAY AFTERNOON/SATURDAY NIGHT. CURRENTLY...SCATTERED SHOWERS ARE MOVING OUT OF EASTERN PORTIONS OF CENTRAL NORTH DAKOTA. UPSTREAM...CONVECTION IS FIRING ALONG THE BIGHORNS IN NORTH CENTRAL WYOMING AND SOUTHEAST MONTANA. SLIGHT TO MODERATELY UNSTABLE ATMOSPHERE EXISTS OVER SOUTHEAST MONTANA INTO NORTHWEST SOUTH DAKOTA AND EASTERN WYOMING. UNSTABLE CONDITIONS ALSO EXTEND INTO SOUTHWEST NORTH DAKOTA. A SHORTWAVE TROUGH MOVING ACROSS WYOMING THIS EVENING WILL PROVIDE THE UPPER SUPPORT FOR THUNDERSTORM DEVELOPMENT INTO SOUTHWEST NORTH DAKOTA LATE THIS AFTERNOON AND THIS EVENING. KEPT A MENTION OF SEVERE STORMS OVER THE FAR SOUTHWEST THIS EVENING. AN UPPER LEVEL LOW PRESSURE SYSTEM OVER BRITISH COLUMBIA CANADA TONIGHT WILL MOVE EAST INTO SASKATCHEWAN BY SUNDAY MORNING. THIS WILL KEEP THE CHANCE OF THUNDERSTORMS IN THE FORECAST AGAIN ON SATURDAY WITH THE BEST CHANCES FROM MID AFTERNOON TO LATE EVENING. ONCE AGAIN...THE SOUTHERN PORTION OF THE CWA WILL HAVE THE BEST LIKELIHOOD OF SEEING SEVERE CONVECTION. LOW TEMPERATURES WILL BE GENERALLY IN THE 50S TONIGHT AND SATURDAY NIGHT...WITH HIGHS ON SATURDAY IN THE 70S. .LONG TERM...SUNDAY THROUGH FRIDAY... AN UPPER LEVEL LOW PRESSURE/TROUGH WILL TRAVERSE THROUGH WESTERN AND CENTRAL NORTH DAKOTA SUNDAY NIGHT/MONDAY. SOUTHWEST FLOW WITH PLENTY OF INSTABILITY AHEAD OF THIS WAVE WILL SET THE STAGE FOR STRONG TO POSSIBLY SEVERE THUNDERSTORMS WITH HEAVY RAIN MAINLY OVER SOUTHERN AND SOUTHEAST NORTH DAKOTA SUNDAY AFTERNOON AND EVENING. THE UPPER TROUGH EXITS OUR EASTERN ZONES MONDAY AFTERNOON AND THE THREAT FOR SHOWERS AND THUNDERSTORMS WILL DIMINISH FROM WEST TO EAST MONDAY. THEREAFTER...DRY AND WARMER WEATHER TAKES CONTROL TUESDAY THROUGH THURSDAY AS A RIDGE ESTABLISHES ITSELF OVER THE CENTRAL PLAINS. BY THURSDAY NIGHT AND FRIDAY...THE RIDGE AXIS MOVES EAST AND ALLOWS ANOTHER TROUGH TO SLIDE THROUGH. TIMING DIFFERENCES EXIST BETWEEN THE ECMWF AND GFS AS TO WHEN A SURFACE COLD FRONT MOVES THROUGH...BUT DO EXPECT THIS IS WHEN OUR NEXT GOOD CHANCE OF SHOWERS AND THUNDERSTORMS WILL ARRIVE AFTER MONDAYS TROUGHS EXITS. HIGH TEMPERATURES ON TUESDAY WILL BE IN THE 70S...THEN RISING INTO THE 80S WEDNESDAY THROUGH FRIDAY. ALSO EXPECT MORE HUMID CONDITIONS AS DEWPOINTS RISE INTO THE LOWER 60S. OVERNIGHT LOWS WILL BEGIN COMFORTABLE AT AROUND 50F MONDAY MORNING...BUT THEN RISE TO 60F-65F FOR OVERNIGHT LOWS WEDNESDAY THROUGH FRIDAY. && .AVIATION...MVFR TO VFR CEILINGS ARE EXPECTED THROUGH 18Z SATURDAY. AT TIMES A SHOWER IN THE VICINITY WILL BE CARRIED AT EACH AERODROME OVER THE NEXT 24HR. HOWEVER AT THIS TIME...THE HIGHEST THREAT FOR SHOWERS AND THUNDERSTORMS WOULD FAVOR KDIK FRIDAY EVENING. WILL CONTINUE TO MONITOR AS SHOWERS AND THUNDERSTORMS EXIT FROM WYOMING AND MONTANA THIS EVENING AND INTO SOUTHWESTERN NORTH DAKOTA THROUGH LATE FRIDAY EVENING. && .BIS WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...TWH LONG TERM/AVIATION....KS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BISMARCK ND 511 AM CDT FRI JUN 24 2011 NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-251015- DIVIDE-BURKE-RENVILLE-BOTTINEAU-ROLETTE-WILLIAMS-MOUNTRAIL-WARD- MCHENRY-PIERCE-MCKENZIE-DUNN-MERCER-OLIVER-MCLEAN-SHERIDAN-WELLS- FOSTER-GOLDEN VALLEY-BILLINGS-STARK-MORTON-BURLEIGH-KIDDER- STUTSMAN-SLOPE-HETTINGER-GRANT-BOWMAN-ADAMS-SIOUX-EMMONS-LOGAN- LA MOURE-MCINTOSH-DICKEY- 511 AM CDT FRI JUN 24 2011 /411 AM MDT FRI JUN 24 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL NORTH DAKOTA...NORTHWEST NORTH DAKOTA...SOUTH CENTRAL NORTH DAKOTA...SOUTHEAST NORTH DAKOTA AND SOUTHWEST NORTH DAKOTA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE LIKELY ACROSS SOUTHWEST AND SOUTH CENTRAL NORTH DAKOTA FRIDAY MORNING. THERE IS A CHANCE OF THUNDERSTORMS...SOME POSSIBLY SEVERE...ACROSS WESTERN AND SOUTH CENTRAL NORTH DAKOTA LATE FRIDAY AFTERNOON AND INTO THE NIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS...SOME SEVERE AND CAPABLE OF PRODUCING HEAVY RAINFALL ARE POSSIBLE ACROSS CENTRAL AND PORTIONS OF WESTERN NORTH DAKOTA ON SATURDAY. ANOTHER ROUND OF THUNDERSTORMS...SOME SEVERE AND CAPABLE OF HEAVY RAINFALL...ARE POSSIBLE EAST OF HIGHWAY 83 AND SOUTH OF INTERSTATE 94 ON SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED LATE FRIDAY AFTERNOON ACROSS WESTERN AND SOUTH CENTRAL NORTH DAKOTA. AYD
The national radar mosaic for the moment the first event began.
2 flash flood, 1 heavy rain. Local standard time, as filed.
A report of heavy rain measured at 1.50 inches was received. The time when the rain started is unknown. The report indicated the rain fell over a short period of time. Flash flood conditions eventually developed. Please see the Flash Flood entry for details.
Slow moving and redeveloping thunderstorms brought heavy rain to the area. Excessive runoff from the heavy rain resulted in water flowing over roads southwest of Lignite.
Slow moving and redeveloping thunderstorms brought heavy rain to the area. Excessive runoff from the heavy rain resulted in flash flood conditions to develop.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Dakota in 2011Every state in 2011This day in weather historyWarnings in North Dakota, 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: 315347, 315348, 316604.