Thunderstorms caused heavy rain and flash flooding in the Lake Park area in Dickinson County of northwest Iowa on the afternoon of June 14th.
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 FSD wrote it up.
Thunderstorms caused heavy rain and flash flooding in the Lake Park area in Dickinson County of northwest Iowa on the afternoon of June 14th.
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 Sioux Falls, SD wrote its last area forecast discussion before the first event at Jun 14, 9:53 AM CST, 3 hours 52 minutes earlier.
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA NATIONAL WEATHER SERVICE SIOUX FALLS SD 1053 AM CDT TUE JUN 14 2011 .DISCUSSION... SHOWERS AND THUNDERSTORMS CONTINUE TO REDEVELOP AHEAD OF A WEAK UPPER WAVE MOVING ACROSS SOUTHWEST MINNESOTA. RAINFALL RATES HAVE PUSHED 2 INCHES PER HOUR WITH SOME OF THESE STORMS...WHICH HAS BEEN CAUSE FOR WATER IN THE STREETS IN SOME COMMUNITIES. OVERALL THE FLASH FLOOD THREAT IS LOW THE REST OF THE DAY...BUT A COUPLE OF INCHES OF RAIN ARE CERTAINLY POSSIBLE IN A SHORT PERIOD OF TIME OVER PORTIONS OF SOUTHWEST MINNESOTA THROUGH EARLY THIS AFTERNOON. MOST OF THE REMAINDER OF THE FORECAST AREA SHOULD STAY DRY THROUGH MUCH OF THE DAY WITH THUNDERSTORMS REDEVELOPING ACROSS CENTRAL SOUTH DAKOTA...THEN MOVING EAST ACROSS THE FORECAST AREA THIS EVENING AND OVERNIGHT. A GOOD PUSH OF WESTERN WINDS FOLLOWING THE PASSAGE OF A TROUGH SHOULD ALLOW FOR SKIES TO CLEAR OUT. TEMPERATURES FORECAST IN RELATIVELY GOOD SHAPE FOR TODAY...ALTHOUGH AREAS WHERE RAIN HAS BEEN FALLING THIS MORNING MAY BE A FEW DEGREES TO WARM. WILL MAKE MINOR MODIFICATIONS TO THE FORECAST SHORTLY. /97 && .AVIATION... SHOWERS AND THUNDERSTORMS CONTINUE MAINLY OVER SOUTHWEST MINNESOTA THIS MORNING...MUCH OF THIS ACTIVITY SHOULD MOVE OUT OF THE AREA BY EARLY THIS AFTERNOON. MORE THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER CENTRAL SOUTH DAKOTA AND THEN MOVE ACROSS EASTERN SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA THIS EVENING AND OVERNIGHT. VISIBILITY AND CEILINGS VARY GREATLY ACROSS THE FORECAST AREA THIS MORNING. LOTS OF IFR ACROSS FAR SOUTHEAST SOUTH DAKOTA...AND INTO NORTHWEST IOWA...SOUTHWEST MINNESOTA DUE TO LOW STRATUS. THIS SHOULD HANG AROUND THROUGH THE DAY BUT LOW CLOUDS WILL CLEAR OUT FROM WEST TO EAST TONIGHT. /97 && .PREV DISCUSSION... WANING ELEVATED BOUNDARY CONTINUING TO PRODUCE A LINE OF SCATTERED SHOWERS VERY EARLY THIS MORNING FROM NEAR BRIDGEWATER TO DELL RAPIDS TO TRACY. MORE SIGNIFICANT SHOWERS/THUNDERSTORM COMPLEX TRACKING ALONG THE SOUTH DAKOTA/NEBRASKA NEAR TYNDALL...AND PUSHING TO THE EAST. QUESTION BECOMES WHERE THIS COMPLEX WILL END UP THIS MORNING...WITH THE HRRR MODEL ONCE AGAIN HANDLING THE CONVECTION POORLY. IF IT HOLDS TOGETHER...AT ITS CURRENT RATE OF SPEED IT WILL TRACK ACROSS OUR NORTHWESTERN IOWA ZONES BETWEEN 12Z AND 14Z THIS MORNING. WITH THE EXIT OF THIS FEATURE...THINK THERE WILL BE A GENERAL BREAK IN ACTIVITY UNTIL LATE MORNING/EARLY AFTERNOON WHEN REDEVELOPMENT WILL OCCUR IN OUR WEST WITH THE APPROACH OF A MORE SIGNIFICANT UPPER LEVEL TROUGH. CURRENT OBS/SATELLITE INDICATING AN AREA OF STRATUS OVER MUCH OF THE CENTRAL AND SOUTHEASTERN PORTIONS OF THE COUNTY WARNING AREA...AND MODEL RH FIELDS INDICATING THAT THE STRATUS WILL HOLD OVER MUCH OF THE CWA THROUGH MOST OF THE DAY...THOUGH MAY BREAK IN THE WEST BY AFTERNOON. THIS WILL PLAY A PART IN KEEPING THE POTENTIAL FOR SEVERE STORMS AT BAY. MARGINAL CHANCE OF SEVERE STORMS WILL OCCUR OVER OUR SOUTH CENTRAL SOUTH DAKOTA ZONES...WHERE MUCAPE VALUES PER BUFKIT SOUNDINGS ARE PROGGED TO BE AROUND 2000 J/KG BY AFTERNOON...THOUGH EFFECTIVE SHEAR VALUES ARE FAIRLY LOW...SO THINK THAT A SEVERE STORM WOULD BE ISOLATED IF IT OCCURS AT ALL. EXPECT RAINFALL AMOUNTS TO REMAIN IN CHECK...GENERALLY RUNNING FROM NEAR 3 TENTHS TO AROUND HALF AN INCH FOR THE PERIOD OF TODAY/TONIGHT...WHICH WILL REMAIN BELOW FLASH FLOOD GUIDANCE...EVEN IN AREAS THAT RECEIVED SO MUCH RAIN ON MONDAY. IF RAINFALL AMOUNTS WOULD COME IN HIGHER THAN FORECASTED...WOULD NEED TO WATCH FOR FLASH FLOODING THROUGH THE CENTRAL PORTIONS OF THE JAMES RIVER VALLEY WHERE THE STATIONARY BAND SET UP YESTERDAY. WITH THE CLOUDS AND AN EASTERLY LOW LEVEL FLOW...HIGHS WILL REMAIN BELOW NORMAL WITH UPPER 60S TO NEAR 70 EAST TO LOWER/MID 70S WEST AND FAR SOUTH. SHOWERS AND THUNDERSTORMS WILL OVERSPREAD THE AREA FROM WEST TO EAST TONIGHT...EXITING OUR EAST ON WEDNESDAY MORNING AS THE UPPER WAVE PUSHES INTO THE UPPER MIDWEST. BEHIND THE EXITING WAVE...NORTHWESTERLY WINDS WILL PICK UP ON WEDNESDAY AFTERNOON. WITH CLEARING SKIES AND BETTER MIXING...HIGHS EXPECTED TO MAKE IT INTO THE MID 70S NORTHEAST TO AROUND 80 THROUGH THE JAMES RIVER VALLEY INTO THE MISSOURI RIVER CORRIDOR. THURSDAY WILL BE MAINLY DRY AND WARMER AS UPPER LEVEL RIDING BUILDS INTO THE REGION. DID THROW SOME SLIGHT POPS IN ALONG THE MISSOURI RIVER CORRIDOR WITH INCREASING MOISTURE TRANSPORT/INSTABILITY ON A DEVELOPING LOW LEVEL IN CONJUNCTION WITH A WEAK MIDLEVEL WAVE TRACKING ACROSS THE REGION. HIGHS ON THURSDAY LOOKING TO BE IN THE UPPER 70S TO LOWER 80S. A BETTER WAVE EMBEDDED IN THE UPPER LEVEL RIDGE PUSHES INTO THE AREA ON FRIDAY...WITH SLIGHTLY BETTER CHANCES FOR SHOWERS/THUNDERSTORMS. /JM && .FSD WATCHES/WARNINGS/ADVISORIES... IA...NONE. MN...NONE. NE...NONE. SD...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 1210 PM CDT TUE JUN 14 2011 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-151200- AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA- CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE- DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON- IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN- LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN- OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN- SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON- 1210 PM CDT TUE JUN 14 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS... SHOWERS AND THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE ACROSS THE AREA THIS AFTERNOON AND EVENING. THE MAIN THREAT FOR THUNDERSTORM ACTIVITY THIS AFTERNOON WILL BE AREAS NORTH OF INTERSTATE 90 AND ALONG AND EAST OF INTERSTATE 29. SEVERE THUNDERSTORMS ARE GENERALLY NOT EXPECTED TODAY...HOWEVER...A FEW STRONGER THUNDERSTORMS MAY BE CAPABLE OF PRODUCING MARGINALLY SEVERE HAIL. THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE ACROSS SOUTHEAST SOUTH DAKOTA...NORTHWEST IOWA...AND SOUTHWEST MINNESOTA EARLY THIS EVENING...BUT CHANCES FOR THUNDERSTORMS WILL DECREASE FROM WEST TO EAST EVENING PROGRESSES AND INTO THE OVERNIGHT. CHANCES FOR SEVERE THUNDERSTORMS WILL REMAIN LOW TONIGHT. STRONGER THUNDERSTORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL AND HEAVY RAIN. FLOODING... RECORD HIGH RELEASES ARE OCCURRING FROM THE MISSOURI RIVER RESERVOIRS AND WILL CONTINUE INTO MID SUMMER. HIGH WATER LEVELS WILL CAUSE SIGNIFICANT IMPACTS BETWEEN CHAMBERLAIN AND SIOUX CITY. MANY PORTIONS OF THE LOWER JAMES RIVER VALLEY TO THE SOUTH OF MITCHELL WILL SEE MODERATE TO MAJOR FLOODING THROUGH THE WEEKEND DUE TO RECENT RAINFALL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE POSSIBLE TODAY INTO THIS EVENING. && FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.WEATHER.GOV/SIOUXFALLS. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
108 PM CDT TUE JUN 14 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0105 PM FLASH FLOOD 3 SE SIOUX FALLS 43.51N 96.69W
06/14/2011 MINNEHAHA SD NWS EMPLOYEE
WATER OVER CURB AT 49TH AND SOUTHEASTERN
&&
MFUHSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
150 PM CDT TUE JUN 14 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0107 PM FLASH FLOOD 4 NNE SIOUX FALLS 43.59N 96.70W
06/14/2011 MINNEHAHA SD TRAINED SPOTTER
CORNER OF POTSDAM AND LEWIS AVE CARS STRANDED ON FLOODED
ROAD
&&
MFUHSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
200 PM CDT TUE JUN 14 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 PM FLASH FLOOD 9 N WESTBROOK 44.17N 95.42W
06/14/2011 COTTONWOOD MN EMERGENCY MNGR
5 COUNTY ROADS UNDERWATER IN NORTHWEST PORTION OF COUNTY
&&
MFUHSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
220 PM CDT TUE JUN 14 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0100 PM LIGHTNING PIPESTONE 44.00N 96.31W
06/14/2011 PIPESTONE MN EMERGENCY MNGR
LIGHTNING STRIKE STARTED APARTMENT FIRE. NO INJURIES
REPORTED AT THIS TIME.
0210 PM FLASH FLOOD PIPESTONE 44.00N 96.31W
06/14/2011 PIPESTONE MN EMERGENCY MNGR
HIGHWAY 30 UNDERPASS UNDERWATER IN PIPESTONE
&&
MFUHSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
222 PM CDT TUE JUN 14 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0215 PM FLASH FLOOD 5 SSW PIPESTONE 43.94N 96.36W
06/14/2011 PIPESTONE MN EMERGENCY MNGR
HIGHWAY 23 FLOODED BETWEEN IHLEN AND PIPESTONE
&&
MFUHSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
241 PM CDT TUE JUN 14 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0235 PM FLASH FLOOD 1 WNW VALLEY SPRINGS 43.59N 96.48W
06/14/2011 MINNEHAHA SD LAW ENFORCEMENT
FLOODED ROAD ON 262ND STREET
&&
MFUHSThe Sioux Falls radar (KFSD), 118 km away, was scanning. The volume nearest the first event began at 19:46 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain caused flash flooding of some roads.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2011Every state in 2011This day in weather historyWarnings in Iowa, 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: 322884.