A warm front was draped across the region on the afternoon and evening of June 10th with weak shear and a large amount of CAPE. Thunderstorms developed across the area producing numerous hail reports, heavy rain, and a few high winds across southern and southwest Iowa.
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 DMX wrote it up.
A warm front was draped across the region on the afternoon and evening of June 10th with weak shear and a large amount of CAPE. Thunderstorms developed across the area producing numerous hail reports, heavy rain, and a few high winds across southern and southwest Iowa. Two funnel clouds were also noted in south central Iowa.
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 Des Moines, IA wrote its last area forecast discussion before the first event at Jun 10, 5:49 AM CST, 11 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 649 AM CDT WED JUN 10 2015 .SHORT TERM /TODAY/... ISSUED AT 351 AM CDT WED JUN 10 2015 A COLD FRONT WILL CONTINUE TO SINK SOUTH ACROSS CENTRAL IOWA TODAY SETTLING MOST LIKELY ACROSS FAR SOUTHERN IOWA BY THIS AFTERNOON. SOME FORCING IN THE VICINITY OF THE FRONT IS HELPING TO KEEP SOME ISOLATED THUNDERSTORMS GOING IN FAR NORTHWEST IOWA EARLY THIS MORNING BUT THE FORCING IS EXPECTED TO WEAKEN BY DAYBREAK AS A VERY SUBTLE WAVE SHIFTS SOUTHEAST AND THE SURFACE LOW THAT THE FRONTAL BOUNDARY IS TIED TO CONTINUES TO MOVE INTO THE GREAT LAKES REGION. OTHER THAN A WIND SHIFT AND SOME CLOUDS...THERE WILL BE LITTLE SENSIBLE WEATHER ASSOCIATED WITH THE FRONTAL PASSAGE THIS MORNING INTO THE AFTERNOON. HOWEVER...DURING PEAK HEATING HOURS OF THE AFTERNOON THE STALLED FRONTAL BOUNDARY WILL SERVE AS A FOCUS FOR THUNDERSTORM DEVELOPMENT AS VERY STRONG INSTABILITY DEVELOPS ALONG AND AHEAD OF THE FRONTAL BOUNDARY WHERE DEWPOINTS WILL REMAIN IN THE MID 60S. MODELS ARE SUGGESTING MUCAPES ON THE ORDER OF 3000+ J/KG. IN ADDITION... FORCING WILL INCREASE AGAIN LATER TODAY AS A SURFACE LOW DEVELOPS OVER THE PLAINS AND MOVES EAST...EVENTUALLY INTERACTING WITH THE FRONTAL BOUNDARY. THE ONE THING THIS SCENARIO HAS GOING AGAINST IT SOMEWHAT IS WEAK SHEAR IN THE VICINITY OF THE FRONTAL BOUNDARY. HAVING SAID THAT THE FRONTAL BOUNDARY AND THE AMOUNT OF INSTABILITY DURING PEAK HEATING SHOULD BE ENOUGH TO GET THUNDERSTORMS WITH ROBUST UPDRAFTS GOING BUT THE LACK OF SHEAR WILL NOT ALLOW STORMS TO BE SUSTAINED...AT LEAST BE STRONG FOR VERY LONG. THUS THERE WILL BE A RISK FOR SOME LARGE HAIL AS THE UPDRAFTS GO UP THEN DAMAGING WIND AS THE STORMS WEAKEN OR COLLAPSE. SHORT TERM MODELS...INCLUDING HI-RES MODELS...DO NOT SEEM TO PICK UP ON THE THUNDERSTORM DEVELOPMENT POTENTIAL DURING THE LATE AFTERNOON AS NONE OF THEM DEVELOP MUCH OR ANY QPF ACROSS THE AREA. WE HAD SLIGHT CHANCE POPS GOING IN THE GRIDS ALREADY SO THIS WAS LEFT THOUGH REFINED SOME TO MAINLY THE SOUTHERN TIER OR TWO AND I DID INCREASE THEM TO CHANCE POPS BETWEEN 23Z AND 00Z. .LONG TERM /TONIGHT THROUGH TUESDAY/... ISSUED AT 351 AM CDT WED JUN 10 2015 WEAK FRONTAL BOUNDARY TO BE IN PLACE ACROSS THE SOUTHERN CWA THIS EVENING TO LIFT NORTHEASTWARD AS A WARM FRONT LATE TONIGHT. LARGE AMOUNT OF INSTABILITY PRESENT...WITH MARGINAL SHEAR WITH ANY ACTIVITY THAT DEVELOPS ALONG THE BOUNDARY. MOISTURE TRANSPORT TO INCREASE INTO THE AREA TOWARD LATER EVENING...WITH SHEAR INCREASING A BIT SO SOME SEVERE ACTIVITY POSSIBLE. STRONGER UPPER LEVEL WAVE TO LIFT OUT OF THE GREAT BASIN REGION THROUGH THE STATE THURSDAY AND MERGE WITH A NORTHERN STREAM WAVE FRIDAY. THIS WILL ALLOW FOR A LONGER DURATION PRECIPITATION EVENT THURSDAY INTO FRIDAY...WITH AN AXIS OF LOW PRESSURE EXPECTED TO STRETCH FROM WESTERN IOWA INTO CENTRAL/WESTERN KS BY LATE THURSDAY. WARM FRONT TO BE SITUATED ACROSS NORTHERN IOWA...WITH A TREMENDOUS AMOUNT OF MOISTURE ADVECTING INTO THE STATE. EXPECT THUNDERSTORMS TO DEVELOP ALONG AND NORTH OF THE WARM FRONT AS IT LIFTS THROUGH CENTRAL/NORTHERN IOWA THURSDAY. ADDITIONAL ACTIVITY EXPECTED TO DEVELOP ALONG THE SFC TROUGH AXIS ACROSS WRN IA BY LATE THURSDAY. DEF ZONE PRECIP EXPECTED TO THE NORTHWEST OF THE SURFACE LOW ACROSS THE NORTHERN/NORTHWESTERN CWA THURSDAY NIGHT...WITH THE SYSTEM PUSHING EAST INTO FRIDAY. PWAT VALUES STILL EXPECTED TO PUSH TOWARDS THE MAXIMUM VALUES FOR THIS TIME OF YEAR AROUND 2+ INCHES...WITH DEEP WARM CLOUD DEPTHS OF AROUND 14 KFT. THEREFORE STILL A LIKELY HEAVY RAIN SCENARIO SETTING UP...WITH CHANCES FOR SEVERE STORMS AS WELL. FLASH FLOOD GUIDANCE VALUES REMAIN HIGH GIVEN THE DRIER CONDITIONS THAT HAVE BEEN IN PLACE...BUT COULD STILL SEE SOME POTENTIAL FOR FLASH FLOODING WITH THIS SYSTEM AND RIVER FLOODING A POSSIBILITY TOO GIVEN THE WIDESPREAD LARGER AMOUNTS OF RAIN EXPECTED. HOWEVER CONFIDENCE ON THE POSSIBILITY OF WIDESPREAD FLASH FLOODING NOT GREAT GIVEN THE HIGH GUIDANCE VALUES...THE HIGHER PRECIPITATION TO BE SPREAD OUT OVER A LONGER TIME...AND FALLING IN AN AREA OF THE CWA THAT IS LESS RESPONSIVE/FLASHY. POSSIBILITY OF SOME RISES ON AREA RIVERS...SO WILL HAVE TO MONITOR FOR POSSIBLY FLOOD WATCH BUT AGAIN THREAT DIMINISHED SOME WITH THE ORIENTATION OF THE AXIS OF HEAVY RAINFALL NOT LINING UP WITH THE RIVER BASINS. AS SYSTEM PULLS EAST OF THE AREA FRIDAY...STILL HAVE THE UPPER LOW OVERHEAD AND MAY SEE SOME LINGERING ACTIVITY. OTHERWISE MAINLY DRY CONDITIONS FOR LATE FRIDAY INTO FRIDAY NIGHT. FRONTAL BOUNDARY COULD GET HUNG UP ACROSS THE SOUTH AND LIFT BACK NORTH SATURDAY WITH ANOTHER WAVE LIFTING OUT OF THE DESERT SOUTHWEST. SOUTHWEST FLOW ALOFT WILL TRANSITION INTO A MORE ZONAL FLOW PATTERN INTO EARLY NEXT WEEK. OVERALL CONTINUE TO SEE WEAK IMPULSES LIFT INTO THE REGION...RESULTING IN CONTINUED CHANCES FOR THUNDERSTORMS ACROSS MUCH OF THE CWA FOR THE WEEKEND INTO EARLY NEXT WEEK. TEMPS TO COOL A BIT FRIDAY INTO SATURDAY BEHIND THE COOL FRONT...THEN MODERATE AND WARM AGAIN INTO EARLY NEXT WEEK. && .AVIATION...10/12Z ISSUED AT 649 AM CDT WED JUN 10 2015 A COLD FRONT WILL SAG SOUTH TO NEAR KOTM BY 20Z AND REMAIN NEARLY STATIONARY. STORMS WILL RE-DEVELOP ALONG THIS BOUNDARY AFT 22Z WILL PERSIST INTO THE EVENING AS THE FRONT LIFTS NORTH AFFECTING KDSM AND KFOD AROUND 06Z. MAINLY VFR CIGS EXPECTED. WINDS WILL BE VARIABLE AND UNDER 10KTS BUT STRONGER NEAR ANY STORMS. && .DMX WATCHES/WARNINGS/ADVISORIES...NONE. && SHORT TERM...FAB LONG TERM...BEERENDS AVIATION...FAB
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 507 AM CDT WED JUN 10 2015 IAZ072>075-081>086-092>097-111000- MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE- WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS- 507 AM CDT WED JUN 10 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TODAY AND TONIGHT AN ISOLATED NON-SEVERE THUNDERSTORM MAY BE POSSIBLE THIS MORNING...WITH AN INCREASING CHANCE FOR THUNDERSTORMS LATE TONIGHT. HEAVY RAINFALL IS POSSIBLE WITH ANY THUNDERSTORM LATE TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY WIDESPREAD THUNDERSTORMS ARE EXPECTED THURSDAY INTO THURSDAY NIGHT...WITH INTERMITTENT CHANCES CONTINUING THROUGH THE FORECAST PERIOD. THERE IS A SLIGHT RISK FOR SEVERE WEATHER LATER THURSDAY INTO THURSDAY NIGHT...WITH LARGE HAIL AND DAMAGING WINDS THE MAIN SEVERE THREATS. HEAVY RAINFALL IS EXPECTED THURSDAY INTO FRIDAY...WITH RAINFALL AMOUNTS IN EXCESS OF TWO TO THREE INCHES POSSIBLE. THE HEAVY RAINFALL COULD POSSIBLY BRING THE POTENTIAL FOR FLASH FLOODING AND MINOR RIVER FLOODING. THE HEAVIEST RAINFALL IS EXPECTED ALONG THE MN/IA BORDER. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THURSDAY INTO THURSDAY NIGHT. IAZ004>007-015>017-023>028-033>039-044>050-057>062-070-071-111000- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER- POWESHIEK-CASS-ADAIR- 507 AM CDT WED JUN 10 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE EXPECTED LATE THIS AFTERNOON INTO TONIGHT. AN ISOLATED SEVERE STORM IS POSSIBLE...WITH LARGE HAIL AND DAMAGING WINDS THE MAIN SEVERE THREATS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY WIDESPREAD THUNDERSTORMS ARE POSSIBLE THURSDAY INTO THURSDAY NIGHT...WITH INTERMITTENT THUNDERSTORM CHANCES THROUGH THE FORECAST PERIOD. THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS...WITH LARGE HAIL AND DAMAGING WINDS THE MAIN SEVERE THREATS LATE THURSDAY AND THURSDAY NIGHT. LOCALLY HEAVY RAINFALL WILL BE POSSIBLE WITH THE STRONGER STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE THURSDAY INTO THURSDAY NIGHT. MJB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 531 AM CDT WED JUN 10 2015 IAZ004-005-015-023-024-033>035-044>046-101245- EMMET-KOSSUTH-PALO ALTO-POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER- CRAWFORD-CARROLL-GREENE- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...EMMETSBURG... POCAHONTAS...LAURENS...ROLFE...FONDA...GILMORE CITY...HUMBOLDT... SAC CITY...LAKE VIEW...ODEBOLT...WALL LAKE...SCHALLER...EARLY... ROCKWELL CITY...MANSON...LAKE CITY...POMEROY...FORT DODGE... DENISON...CARROLL...JEFFERSON 531 AM CDT WED JUN 10 2015 ...GUSTY WIND POSSIBLE WITH THUNDERSTORMS... ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE MOVING ACROSS NORTHWEST IOWA THIS MORNING AND ARE EXPECTED TO DISSIPATE AS THEY MOVE TO THE SOUTHEAST BY MID MORNING. THE STORMS ARE CAPABLE OF PRODUCING WIND GUSTS TO AS MUCH AS 35 MPH. IF STORMS APPROACH YOUR AREA SEEK SHELTER INDOORS UNTIL THE STORMS PASS. FAB
The Des Moines radar (KDMX), 139 km away, was scanning. The volume nearest the first event began at 12:01 UTC.
19 hail, 4 heavy rain, 3 thunderstorm wind, 2 funnel cloud. Local standard time, as filed.
Heavy rainfall report by Blockton Coop observer of 2.28 inches over the previous 24 hours.
Heavy rainfall reported by Bedford Coop observer of 3.68 inches over the previous 24 hours.
Coop observer reported heavy rainfall of 2.05 inches between approximately 4 pm and 5 pm CDT.
Coop observer reported 1 inch hail.
Winds were estimated at 60 mph as well with some limbs down.
Quarter size hail and downed tree limbs were also reported.
Public reported hail up to quarter size five and a half miles south of Creston. Report received via Twitter.
Observer reported heavy rainfall of 1.5 inches. Duration time unknown.
Healthy tree split and fell onto a garage. Numerous other 4 to 6 inch branches broken off around Allerton.
Dime to nickel size hail was reported.
Multiple trees of 3 to 4 feet in diameter were down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2015Every state in 2015This day in weather historyWarnings in Iowa, June 2015
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: 576203, 576204, 576189, 576177, 576179, 576180, 576181, 576182, 576183, 576184, 576185, 576186, 576187, 576188, 576190, 576191, 588670, 588673, 576192, 576193, 576196, 576197, 576198, 576200, 576201, 588677, 576202, 588678.