5 billion dollars. Flooding was the result of significant winter snows and significant spring rains, not only in North Dakota but in Montana as well.
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 BIS wrote it up.
This was part of historic flooding in North Dakota with statewide costs estimated around 1.5 billion dollars. Flooding was the result of significant winter snows and significant spring rains, not only in North Dakota but in Montana as well. Rocky Mountain snowpack was four to six times normal. Flooding was along the Missouri River from the Montana border to Garrison Dam. Dams were overwhelmed by the amount of water. Flooding included river, ground, and overland types. Oil wells were shuttered. Estimated damages were around $400,000 and that is not all inclusive. There was a significant loss to agriculture by not being able to plant. A tremendous flood fight was waged against the river, and that cost is not included here. Storm Data cannot reflect the scope of this event. Information is what was available at the time of this writing. Refer to newspaper articles and other federal, state, and local sources for detailed information.
Here are some facts about the flooding in North Dakota provided by North Dakota Emergency Management. The total estimated flood cost was around $1.5 billion. Individual and housing assistance was $323 million; small business $248 million; home and business reconstruction $452 million; public response, recovery, and mitigation $480 million; disaster unemployment for 866 claims was $2.3 million; and the public finance authority disaster loan program approved $56.6 million. Public infrastructure costs were $320 million. Of the state's 53 counties, 48 were impacted, along with three tribal nations.
The Missouri River was in flood in every state in the United States of America that it runs through. This was a multi-state disaster.
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 30, 10:58 PM CST, 1 hour 2 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BISMARCK ND 1158 PM CDT THU JUN 30 2011 .UPDATE...POPS/WX. && .DISCUSSION...LATEST WATER VAPOR IMAGERY SHOWS THE NEXT SHORTWAVE OVER NORTH CENTRAL WYOMING MOVING NORTHEAST WITH TIME. THIS IS BEING REFLECTED WITH SHOWERS AND SCATTERED THUNDERSTORMS ON REGIONAL RADAR WHICH WERE PUSHING THROUGH SOUTHWESTERN NORTH DAKOTA AND WILL SOON MOVE INTO SOUTH CENTRAL NORTH DAKOTA BY 06Z. OVERALL EXPECT THE THUNDERSTORMS TO REMAIN NON-SEVERE AS THE BEST OMEGA/FORCING REMAINS OVER CENTRAL SOUTH DAKOTA. SPEAKING OF THIS...THERE IS A COMPLEX OF SEVERE THUNDERSTORMS OVER SOUTH CENTRAL SOUTH DAKOTA AT THIS TIME WHICH WILL NEED TO BE WATCHED CLOSELY THE REST OF THE NIGHT AS THEY MOVE NORTHEAST...LIKELY MOVING INTO OUR SOUTHEASTERN ZONES AFTER 06Z. DRIER AIR MOVES IN LATE TONIGHT FROM WEST TO EAST WITH A DECREASE IN SHOWERS FRIDAY MORNING. THE REST OF THE FORECAST IS ON TRACK. && .AVIATION...SHOWERS AND SCATTERED THUNDERSTORMS CURRENTLY MOVING ACROSS SOUTHWEST NORTH DAKOTA WILL CONTINUE TO ADVECT EAST AND SLIGHTLY NORTH THROUGH 12Z. ANOTHER AREA OF SHOWERS AND THUNDERSTORMS (HEAVIER INTENSITY CURRENTLY) OVER CENTRAL SOUTH DAKOTA WILL ALSO CONTINUE TO ADVECT NORTHEAST TOWARDS SOUTH CENTRAL/SOUTHEASTERN NORTH DAKOTA...PROJECTED TO CROSS THE SD/ND BORDER 06-08Z. KDIK...KBIS...AND KJMS WILL HAVE THE BEST CHANCE OF RECEIVING ACCUMULATING PRECIPITATION...WITH THE HEAVIER AMOUNTS MAINLY OVER FAR SOUTHERN ND POSSIBLY IMPACTING KJMS AROUND 08-10Z. OVERALL VFR CONDITIONS SHOULD PREVAIL AT ALL TAF SITES THROUGHOUT THE PERIOD. PERIODS OF MVFR-IFR CIGS/VIS ARE POSSIBLE AT THE SOUTHERN TERMINALS MENTIONED ABOVE THROUGH 12-15Z WITH ANY HEAVIER RAINFALL. && .BIS WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...KS AVIATION...NH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BISMARCK ND 1210 AM CDT FRI JUL 1 2011 NDZ020-022-023-025-034>037-040>048-050-051-020515- OLIVER-SHERIDAN-WELLS-FOSTER-MORTON-BURLEIGH-KIDDER-STUTSMAN- SLOPE-HETTINGER-GRANT-BOWMAN-ADAMS-SIOUX-EMMONS-LOGAN-LA MOURE- MCINTOSH-DICKEY- 1210 AM CDT FRI JUL 1 2011 /1110 PM MDT THU JUN 30 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL NORTH DAKOTA...SOUTHEAST NORTH DAKOTA AND SOUTHWEST NORTH DAKOTA. .DAY ONE...REST OF TONIGHT SCATTERED THUNDERSTORMS...SOME WITH GUSTY WINDS AND HEAVY RAINFALL CAN BE EXPECTED THE REST OF TONIGHT MAINLY SOUTH OF THE INTERSTATE 94 CORRIDOR...ESPECIALLY ACROSS THE JAMES RIVER VALLEY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE JAMES RIVER VALLEY FRIDAY MORNING. THERE IS A SLIGHT CHANCE OF THUNDERSTORMS ACROSS SOUTHERN NORTH DAKOTA SATURDAY...AND CENTRAL NORTH DAKOTA SUNDAY...WITH A BETTER CHANCE POSSIBLE ON INDEPENDENCE DAY...MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ASKED TO REPORT ANY SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN BISMARCK. NDZ001>005-009>013-017>019-021-031>033-020515- DIVIDE-BURKE-RENVILLE-BOTTINEAU-ROLETTE-WILLIAMS-MOUNTRAIL-WARD- MCHENRY-PIERCE-MCKENZIE-DUNN-MERCER-MCLEAN-GOLDEN VALLEY-BILLINGS- STARK- 1210 AM CDT FRI JUL 1 2011 /1110 PM MDT THU JUN 30 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL NORTH DAKOTA...NORTHWEST NORTH DAKOTA...SOUTH CENTRAL NORTH DAKOTA AND SOUTHWEST NORTH DAKOTA. .DAY ONE...REST OF TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A SLIGHT CHANCE OF THUNDERSTORMS ACROSS SOUTHERN NORTH DAKOTA SATURDAY...WITH A BETTER CHANCE POSSIBLE ON INDEPENDENCE DAY MONDAY. THERE IS ALSO A SLIGHT CHANCE OF THUNDERSTORMS ACROSS THE SOUTHWEST ON TUESDAY NIGHT INTO WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. KS/NH
The national radar mosaic for the moment the first event began.
4 flood. Local standard time, as filed.
See the event episode narrative for details.
See the event episode narrative for details.
See the event episode narrative for details.
See the event episode narrative for details.
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, July 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: 356400, 356403, 356402, 356404.