The frontal system that had remained stationary over the state remained over Iowa on the 22nd. Thunderstorms formed by the early afternoon hours.
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.
The frontal system that had remained stationary over the state remained over Iowa on the 22nd. Thunderstorms formed by the early afternoon hours. The thunderstorms produced sub-severe hail and winds to around 60 MPH over parts of central into southeast Iowa. Downdraft CAPE was between 900 and 1200 J/kg at the time. The freezing level was relatively low, around 12,500 feet. The thunderstorms produced funnel clouds during the mid and late afternoon hours over north 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 22, 11:48 AM CST, 1 hour 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 1248 PM CDT SUN JUN 22 2014 .SHORT TERM /TODAY/... ISSUED AT 334 AM CDT SUN JUN 22 2014 ACTIVE WEATHER SETTING UP FOR TODAY AS SYSTEM PASSES ROCKIES AND INTO THE PLAINS IN BROAD WESTERLY FLOW. ONGOING CONVECTION ACRS NORTHWEST IOWA WILL CONTINUE TO SETTLE SOUTHEAST EARLY THIS MORNING ALONG THE INSTABILITY AXIS ACROSS WESTERN IOWA. MOISTURE TRANSPORT WILL CONTINUE TO POINT INTO THE STATE THROUGH THE DAY AHEAD OF SLOW MOVING FRONT CURRENTLY ACRS THE DAKOTAS AND NEBRASKA. IN ADDITION...A WEAK SURFACE WAVE WILL MOVE ALONG THIS BOUNDARY ACRS KS AND TOWARD IOWA BY THIS EVENING. THIS WILL HELP THE FOCUS OF LOW LEVEL MOISTURE CONVERGENCE AND MOISTURE TRANSPORT TO CONTINUE INTO WESTERN IOWA DURING THE DAY. THE MORNING CONVECTION SHOULD AFFECT MAINLY THE WESTERN HALF OF THE FORECAST AREA WITH ADDITIONAL CONVECTION IN NEBRASKA SLIDING INTO THE STATE LATE THIS MORNING. ADDITIONAL CONVECTION WILL DEVELOP LATER THIS AFTERNOON WITH PEAK HEATING AND CONTINUE INTO TONIGHT AS THE SURFACE WAVE MOVES UP ALONG THE BOUNDARY. AT THIS POINT...OVERALL SHEAR IS RATHER MUNDANE WITH THE THREAT OF SEVERE CONVECTION LIMITED TO HAIL AND DAMAGING WINDS. HOWEVER...A BIGGER THREAT IS EXPECTED FROM HEAVY RAINFALL POTENTIAL AS PWATS REMAIN FROM 1.50-2.00 INCHES ACROSS THE AREA BY THIS AFTERNOON. STORMS WILL ALSO BE RELATIVELY SLOW MOVING AND WITH AMPLE MOISTURE...HIGH RAINFALL RATES CAN BE EXPECTED. GIVEN THE VERY MOIST ANTECEDENT CONDITIONS...HAVE OPTED FOR A FLASH FLOOD WATCH ACROSS THE NORTHWEST TWO-THIRDS OF THE FORECAST AREA FOR THIS AFTERNOON WHICH WILL EXTEND INTO TONIGHT AS THE SYSTEM MOVES THROUGH THE STATE. .LONG TERM /TONIGHT THROUGH SATURDAY/... ISSUED AT 334 AM CDT SUN JUN 22 2014 IOWA REMAINS IN AN ACTIVE PATTERN THIS WEEK. OF IMMEDIATE CONCERN IS THE SHORTWAVE THAT WILL AFFECT IOWA TODAY THROUGH MID-DAY MONDAY. CONVECTION IS VERY SLOW MOVING AND STORMS ARE VERY EFFICIENT RAIN PRODUCERS. WITH THE RAIN IN RECENT PAST AND HIGH PWATS OF 1.5 INCHES AND SLIGHTLY HIGHER...FLASH FLOODING WILL BE A CONCERN. I EXPECT CONVECTION TO SLOWLY CREEP IN FROM NEBRASKA THEN SLOWLY MOVE ACROSS IOWA THROUGH THE TONIGHT PERIOD. THE NEW DAY 1 SEVERE OUTLOOK HAS THE SLIGHT RISK PUSHED BACK TO THE WEST WHICH MAKES SENSE AND WHILE THE SEVERE THREAT IS NOT AS HIGH AS THE HEAVY RAIN AND FLASH FLOOD THREAT FOR CENTRAL IOWA...A FEW STORMS THIS EVENING WILL LIKELY BE CAPABLE OF PRODUCING DAMAGING WIND AND LARGE HAIL. NORTHERN IOWA WILL ONCE AGAIN BE UNDER THE GUN BUT STORMS WILL LIKELY DEVELOP INTO A BROKEN LINE ACROSS THE FORECAST AREA AND HEAVY RAINFALL WILL BE A THREAT ACROSS MOST OF THE NORTHWEST HALF TO TWO THIRDS OR SO OF THE FORECAST AREA. BY 21Z MONDAY THE SHORTWAVE WILL FINALLY BE PAST CENTRAL IOWA SO RAINFALL WILL BE SHIFTING EAST OUT OF THE AREA THROUGH THE EARLY AFTERNOON AND OUT OF THE FORECAST AREA BY MID TO LATE AFTERNOON. THERE IS A RELATIVE LULL FROM MONDAY NIGHT THROUGH TUESDAY OR TUESDAY NIGHT BEFORE THE NEXT SHORTWAVE MOVES INTO IOWA. PRECIP CHANCES WILL INCREASE ACROSS THE WEST FROM LATE TUESDAY OR TUESDAY NIGHT THROUGH WEDNESDAY. MODEL DIFFERENCES PRECLUDE BEING ABLE TO BE MORE SPECIFIC ON TIMING AT THIS POINT. THE SEVERE POTENTIAL LOOKS LOW AS WELL BUT ONCE AGAIN HEAVY RAINFALL WILL BE LIKELY. ONCE LOCATION IS ABLE TO BE BETTER DEFINED THEN ADDITIONAL FLOOD OR FLASH FLOOD WATCHES MAY BE REQUIRED. FOR THE REMAINDER OF THE EXTENDED...THE MODELS STILL DIFFER ON THE HANDLING OF A DEEP TROUGH TO DEVELOP OVER THE WEST. THE GFS APPEARS MORE BULLISH WITH THIS FEATURE THAN DOES THE EURO AND THE RESULT WILL MEAN A RIDGE PARKED OVER THE UPPER MIDWEST BUT JUST HOW AMPLIFIED THE RIDGE BECOMES FROM THE DEEPENING TROUGH IS IN QUESTION. AS A RESULT THE TIMING OF SHORTWAVES IS ALSO IN QUESTION AS IS WHETHER THEY WILL BE STRONG ENOUGH TO FLATTEN THE RIDGE ANY. HAVING SAID THAT WE WILL STILL BE UNSTABLE AND IT WOULD NOT TAKE MUCH TO GET STORMS TO INITIATE...ESPECIALLY LATE DAY AND THROUGH THE NIGHT. AT THIS POINT SEVERE WEATHER DOES NOT APPEAR TO BE MUCH OF A THREAT BUT A HEAVY RAIN THREAT CONTINUES TO PLAGUE THE REGION SO TRENDS WILL CONTINUE TO BE MONITORED. && .AVIATION...22/18Z ISSUED AT 1248 PM CDT SUN JUN 22 2014 SCATTERED THUNDERSTORMS WILL IMPACT THE AREA THROUGH THIS AFTERNOON WITH THE MAIN FOCUS EAST OF INTERSTATE 35. HEAVY DOWNPOURS CREATING REDUCED VISIBILITIES AND GUSTY WINDS WILL BE THE MAIN ISSUES. LOCALIZED MVFR CIGS MAY ALSO OCCUR. THE PRECIPITATION WILL END FROM WEST TO EAST LATE AFTERNOON AND INTO THE EVENING. POTENTIAL FOR SOME FOG OVERNIGHT WITH THE BEST POTENTIAL VICINITY OF KALO/KOTM. ERRATIC WIND DIRECTIONS TODAY BECOMING WEST TO NORTHWEST OVERNIGHT AND INTO MONDAY MORNING. && .HYDROLOGY... ISSUED AT 334 AM CDT SUN JUN 22 2014 TODAY THROUGH MONDAY NIGHT PLENTY OF CONCERN AS SLOW MOVING SYSTEM PASSES THROUGH THE REGION TODAY INTO TONIGHT. THE AIRMASS CONTINUE TO BE VERY MOIST WITH PWATS IN EXCESS OF 1.50 INCHES IN CENTRAL IOWA. LOW LEVEL MOISTURE TRANSPORT WILL FOCUS INTO THE STATE BY THIS AFTERNOON AND CONTINUE INTO TONIGHT AS THE SYSTEM PULLS THROUGH THE STATE. RECENT HEAVY RAINFALL ACROSS MUCH OF IOWA HAS LEFT FLASH FLOOD GUIDANCE VALUES RELATIVELY LOW. IN ADDITION...MANY RIVERS ACROSS NORTHERN IOWA ARE IN FLOOD OR NEAR FLOOD STAGE AND ANY ADDITIONAL RAINFALL WILL ONLY AGGRAVATE THE SITUATION. AS MENTIONED IN THE SHORT TERM DISCUSSION...A FLASH FLOOD WATCH WILL COVER MUCH OF THE NORTHWEST TWO-THIRDS OF THE FORECAST AREA FROM THIS AFTERNOON INTO TONIGHT GIVEN THE POTENTIAL FOR SLOW MOVING STORMS TO DUMP HEAVY RAINFALL IN A SHORT PERIOD OF TIME. WIDESPREAD RAINFALL OF AN INCH TO TWO INCHES IS ALSO EXPECTED WITH LOCALIZED HIGHER AMOUNTS. THIS COULD CERTAINLY STOP RECEDING RIVERS OR ADD TO THE RISE ON THOSE RIVERS STILL CLIMBING. && .DMX WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH MONDAY MORNING FOR ADAIR-ADAMS-AUDUBON- BLACK HAWK-BOONE-BREMER-BUTLER-CALHOUN-CARROLL-CASS-CERRO GORDO- CRAWFORD-DALLAS-EMMET-FRANKLIN-GREENE-GRUNDY-GUTHRIE-HAMILTON- HANCOCK-HARDIN-HUMBOLDT-KOSSUTH-MADISON-MARSHALL-PALO ALTO- POCAHONTAS-POLK-SAC-STORY-TAYLOR-UNION-WEBSTER-WINNEBAGO-WORTH- WRIGHT. && SHORT TERM...COGIL LONG TERM...FAB AVIATION...DONAVON HYDROLOGY...COGIL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 513 AM CDT SUN JUN 22 2014 IAZ050-061-062-073>075-083>086-093>097-231015- TAMA-JASPER-POWESHIEK-WARREN-MARION-MAHASKA-CLARKE-LUCAS-MONROE- WAPELLO-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS- 513 AM CDT SUN JUN 22 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A SMALL PART OF THE SOUTHEAST PORTION OF CENTRAL IOWA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE POSSIBLE MAINLY FROM LATE AFTERNOON THROUGH TONIGHT. THE THREAT OF SEVERE STORMS IS LOW BUT HEAVY RAINFALL IS LIKELY WITH STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ADDITIONAL THUNDERSTORMS ARE POSSIBLE MAINLY FROM MID-WEEK THROUGH SATURDAY. THERE WILL BE AN INCREASING RISK FOR SEVERE STORMS THROUGH THAT PERIOD BUT IT IS TOO FAR OUT TO DETERMINE SPECIFIC THREATS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY. IAZ007-017-025>028-036>039-046>049-058>060-070>072-081-082-092- 231015- WORTH-CERRO GORDO-WRIGHT-FRANKLIN-BUTLER-BREMER-HAMILTON-HARDIN- GRUNDY-BLACK HAWK-GREENE-BOONE-STORY-MARSHALL-GUTHRIE-DALLAS-POLK- CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR- 513 AM CDT SUN JUN 22 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NORTHWEST TWO THIRDS OF CENTRAL IOWA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WITH HEAVY RAIN ARE LIKELY TODAY INTO TONIGHT. THE RISK OF SEVERE STORMS IS LOW BUT CANNOT BE COMPLETELY RULED OUT. IF AN ISOLATED STORM BECAME SEVERE THEN DAMAGING WIND AND LARGE HAIL WOULD BE THE MAIN THREATS. A FLASH FLOOD WATCH IS IN EFFECT FOR THE AREA. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ADDITIONAL THUNDERSTORMS ARE POSSIBLE MAINLY FROM MID-WEEK THROUGH SATURDAY. THERE WILL BE AN INCREASING RISK FOR SEVERE STORMS THROUGH THAT PERIOD BUT IT IS TOO FAR OUT TO DETERMINE SPECIFIC THREATS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED AT TIMES TODAY INTO THIS EVENING. IAZ004>006-015-016-023-024-033>035-044-045-057-231015- EMMET-KOSSUTH-WINNEBAGO-PALO ALTO-HANCOCK-POCAHONTAS-HUMBOLDT-SAC- CALHOUN-WEBSTER-CRAWFORD-CARROLL-AUDUBON- 513 AM CDT SUN JUN 22 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A SMALL PART OF THE NORTHWEST PORTION OF CENTRAL IOWA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WITH HEAVY RAINFALL ARE LIKELY TODAY AND THIS EVENING. IN ADDITION...THERE IS A SLIGHT RISK OF SEVERE STORMS WITH THE MAIN THREAT BEING DAMAGING WIND AND LARGE HAIL. A FLASH FLOOD WATCH IS IN EFFECT FOR THE AREA. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ADDITIONAL THUNDERSTORMS ARE POSSIBLE MAINLY FROM MID-WEEK THROUGH SATURDAY. THERE WILL BE AN INCREASING RISK FOR SEVERE STORMS THROUGH THAT PERIOD BUT IT IS TOO FAR OUT TO DETERMINE SPECIFIC THREATS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED AT TIMES TODAY INTO THIS EVENING. FAB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1048 AM CDT SUN JUN 22 2014 IAZ027-028-038-039-050-062-221730- BUTLER-BREMER-GRUNDY-BLACK HAWK-TAMA-POWESHIEK- INCLUDING THE CITIES OF...PARKERSBURG...CLARKSVILLE... SHELL ROCK...GREENE...APLINGTON...ALLISON...DUMONT...WAVERLY... GRUNDY CENTER...REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO... CEDAR FALLS...TAMA...TOLEDO...TRAER...DYSART...GLADBROOK... GRINNELL 1048 AM CDT SUN JUN 22 2014 ...STRONG STORMS TO MOVE THROUGH THE AREA THROUGH NOON... A LINE OF STRONG STORMS WILL PASS THROUGH THE AREA OVER THE NEXT HOURS. EXPECT A 10 TO 15 MINUTE PERIOD OF INTENSE RAINFALL RAINS THAT WILL SIGNIFICANTLY REDUCE VISIBILITY. IN ADDITIONAL 50 MPH WINDS GUSTS AND ONE HALF INCH DIAMETER HAIL IS POSSIBLE. DONAVON
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
141 PM CDT SUN JUN 22 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0138 PM HAIL 1 N FLORIS 40.88N 92.33W
06/22/2014 E0.25 INCH DAVIS IA TRAINED SPOTTER
&&
ZOGGThe Des Moines radar (KDMX), 102 km away, was scanning. The volume nearest the first event began at 19:16 UTC.
3 thunderstorm wind, 3 hail, 1 funnel cloud. Local standard time, as filed.
Winds of 60 MPH blew down small branches.
Pea to nickel size hail was reported.
Dime to nickel size hail was reported.
Part of a machine shop roof was blown off.
Eight inch diameter trees were blown over. Dime size hail also fell.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2014Every state in 2014This day in weather historyWarnings in Iowa, June 2014
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: 514122, 514118, 514119, 514120, 514121, 514117, 514116.