S. during the day on the 28th.
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 negatively tilted shortwave moved through the central U.S. during the day on the 28th. A squall line developed over central Iowa and moved east during the afternoon. The storms produced small hail, very heavy rainfall, and gusty winds. One storm produced winds in Tama County at Traer. Several trees were toppled and damage was done to the roof of one home on the south side of town. There were also other scattered reports of damage in town.
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 28, 5:39 PM CST, 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 639 PM CDT SAT JUN 28 2014 .SHORT TERM /TONIGHT/... ISSUED AT 343 PM CDT SAT JUN 28 2014 A LINE OF THUNDERSTORMS HAS DEVELOPED OVER THE WESTERN HALF OF THE STATE AHEAD OF A STRONG PV ANOMALY THAT IS MOVING EAST ACROSS NEBRASKA. INDIVIDUAL STORMS HAVE BEEN FOLLOWING THE 850-300 MB STEERING FLOW WHICH IS OUT OF THE SOUTH/SOUTHEAST AT AROUND 35 KTS. THIS HAS LED TO TRAINING OF STORMS INITIALLY THIS AFTERNOON WITH LOCALLY HEAVY RAINFALL OCCURRING. THE STEERING FLOW DOES GRADUALLY VEER THROUGH THE REMAINDER OF THE AFTERNOON AND INTO THE EVENING AND WILL HELP THE LINE SHIFT MORE PROGRESSIVE TO THE EAST. SEVERE WEATHER THREAT IS THERE AS THE LINE SHIFTS EAST INTO AN AREA OF GREATER INSTABILITY OVER CENTRAL AND SOUTH CENTRAL IOWA WHERE MLCAPES IN EXCESS OF 2500 J/KG ARE IN PLACE. DEEP LAYER SHEAR IS MARGINALLY WEAK ALONG AND AHEAD OF THE LINE AND SHOULD RESULT IN THE STORM MODE TO REMAIN MULTI-CELLULAR WITH A PRIMARY THREAT FOR MARGINALLY SEVERE HAIL AND DAMAGING WIND GUSTS. THE UPPER LEVEL SHORT WAVE WILL PASS THROUGH THIS EVENING WITH DRIER AIR AND SUBSIDENCE TO FOLLOW AND THIS WILL DIMINISH THE PRECIPITATION THREAT FROM WEST TO EAST. POTENTIAL FOR SOME FOG TO DEVELOP OVERNIGHT AS WINDS DIMINISH. .LONG TERM /SUNDAY THROUGH SATURDAY/... ISSUED AT 343 PM CDT SAT JUN 28 2014 SEVERAL EPISODES OF SEVERE STORMS ARE EXPECTED FROM SUNDAY THROUGH MONDAY. A NEGATIVELY TILTED TROUGH ASSOCIATED WITH A STRONG LOW OVER SOUTHERN CANADA WILL GRADUALLY SHIFT EAST THROUGH MONDAY. THE MODELS ARE ALL SUGGESTING A SURFACE LOW WILL SLOWLY LIFT INTO MN THEN CANADA DRAGGING A COLD FRONT TO THE WESTERN IOWA BORDER. DURING THE LATE MORNING/EARLY AFTERNOON A SECOND SURFACE LOW WILL DEVELOP AND TRACK UP THE BOUNDARY AS A SHORT WAVE HEADS TOWARDS THE UPPER MIDWEST FROM THE NORTHERN/CENTRAL PLAINS. STRONG SOUTHERLY FLOW WILL BE PRESENT TRANSPORTING DEEP MOISTURE AND SHEAR OF 35- 50KTS ACROSS THE STATE WHICH IS MAXIMIZED BETWEEN 18Z AND 21Z. STORMS ARE EXPECTED TO INITIATE OVER THE WEST OR NORTHWEST BY LATE MORNING OR EARLY AFTERNOON THEN PROPAGATE EAST SOUTHEAST. ALL MODES OF SEVERE STORMS WILL BE POSSIBLE SUNDAY WITH DAMAGING WIND THE BIGGER THREAT BUT A FEW TORNADOES CANNOT BE RULED OUT...ESPECIALLY NEAR THE BOUNDARY. PWATS APPROACH 2 INCHES SUNDAY AFTERNOON SO HEAVY RAINFALL ALONG WITH SOME POTENTIAL FOR FLASH FLOODING WILL BE POSSIBLE. SUNDAY NIGHT A LOW LEVEL JET DEVELOPS AND STORMS REFIRE TO THE WEST MOVING INTO WEST CENTRAL IOWA. AS THE JET TURNS INTO IA ANOTHER ROUND OF SEVERE STORMS WILL MOVE IN...LIKELY BECOMING AN MCS WITH ADDITIONAL THREAT OF DAMAGING WIND AND VERY HEAVY RAINFALL. THE HEAVY RAINFALL FROM EARLIER IN THE DAY WILL SET THE STAGE FOR FLASH FLOODING. IF WE DO NOT SEE MUCH FLASH FLOODING FROM THE EARLIER EVENT THEN THE EVENING EVENT WILL MOST LIKELY CAUSE FLASH FLOODING...DEPENDING ON WHERE EACH EVENT SETS UP OF COURSE. CONVECTION WILL LIKELY BE ONGOING MONDAY MORNING AS THE UPPER LOW FINALLY BEGINS TO PUSH EAST AND THE FINAL SHORTWAVE/TROUGH SWEEPS THE AREA. WE WILL STILL SEE A THREAT OF SEVERE STORMS MONDAY...ALONG WITH HEAVY RAINFALL WHICH WILL WANE THROUGH THE LATE MORNING THROUGH MID AFTERNOON HOURS. A SECONDARY COLD FRONT DROPS SOUTH OUT OF MINNESOTA ON TUESDAY BUT WE LOSE OUR INSTABILITY SO I AM JUST EXPECTING SHOWERS ACROSS THE NORTH AT THIS POINT...THOUGH AN ISOLATED STORM CANNOT BE RULED OUT. && .AVIATION...29/00Z ISSUED AT 636 PM CDT SAT JUN 28 2014 LINE OF TSRA WILL CONTINUE TO PUSH EAST OF SITES THROUGH 06Z...AFFECTING KALO AND KOTM WITH IFR OR LOWER VISIBILITIES WITHIN TSRA AND LINGERING VCTS AT KDSM AND KMCW. CONDITIONS WILL IMPROVE QUICKLY TO VFR...THOUGH ADDITIONAL ROUND TSRA IS POSSIBLE OVERNIGHT WITH SYSTEM MOVING IN FROM SD/NE...THOUGH HAVE NOT INCLUDED MENTION ATTM WITH LOW CONFIDENCE. MAY SEE BR/FG AT SITES NEAR 12Z WITH AMPLE LOW LEVEL MOISTURE AND HAVE TRENDED THIS WAY AT KOTM. ADDITIONAL TSRA LIKELY AT SITES DURING THE DAY TOMORROW...THOUGH TIMING AND LOCATION STILL UNCERTAIN ATTM. && .HYDROLOGY... ISSUED AT 325 AM CDT SAT JUN 28 2014 LITTLE CHANGE TO PREVIOUS HYDRO OUTLOOK. WITH ADDITIONAL PERIODS OF HEAVY RAINFALL POSSIBLE THROUGH THE WEEKEND INTO MONDAY...CHANCES FOR SOME ADDITIONAL FLOODING WILL CONTINUE. HIGH PRECIPITABLE WATER AND DEEP WARM CLOUD DEPTHS SUGGEST TROPICAL RAIN ENVIRONMENT ONCE AGAIN...SIMILAR TO THE PAST TWO DAYS. STORMS MAY BE MORE PROGRESSIVE TONIGHT AND SUNDAY/MONDAY...BUT GIVEN THE INCREASED DYNAMICS AND AVAILABLE MOISTURE...RAINFALL EFFICIENCY WILL BE VERY HIGH. THE MORE ORGANIZED EVENTS APPEAR TO BE SUNDAY INTO SUNDAY NIGHT...AND POSSIBLY AGAIN ON MONDAY AS WIND FIELDS ALOFT BOTH DAYS WILL SUPPORT MORE WIDESPREAD CONVECTION. && .DMX WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...DONAVON LONG TERM...FAB AVIATION...AWB HYDROLOGY...REV
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 442 PM CDT SAT JUN 28 2014 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-292145- 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-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION- CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE- APPANOOSE-DAVIS- 442 PM CDT SAT JUN 28 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TONIGHT FLOOD WARNINGS ARE IN EFFECT FOR PORTIONS OF THE DES MOINES RIVER...WEST FORK OF THE DES MOINES RIVER...AND RACCOON RIVER BASINS...PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. THUNDERSTORMS WITH HEAVY RAINFALL ARE POSSIBLE THROUGH MID EVENING. SOME OF THE STORMS MAY ALSO BECOME SEVERE WITH DAMAGING WIND THE MAIN THREAT. LOCALIZED FLOODING IS POSSIBLE WITH A FEW STORMS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY PERIODS OF THUNDERSTORMS ARE EXPECTED SUNDAY INTO MONDAY. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS FOR SUNDAY AND SUNDAY NIGHT. DAMAGING WIND...LARGE HAIL AND A FEW TORNADOES ARE ALL POSSIBLE SUNDAY. SUNDAY NIGHT THE THREAT WILL MAINLY BE DAMAGING WIND. VERY HEAVY RAINFALL WILL OCCUR WITH STORMS AND FLASH FLOODING WILL BE POSSIBLE. ADDITIONAL SEVERE THUNDERSTORMS ARE POSSIBLE MONDAY WITH DAMAGING WIND THE MAIN THREAT. HEAVY RAINFALL IS ALSO LIKELY WITH THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY BUT MAY BE NEEDED SUNDAY AFTERNOON...SUNDAY NIGHT AND MONDAY. FAB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 243 PM CDT SAT JUN 28 2014 IAZ005-006-016-023>025-034>036-046-047-058-059-071-072-081-082- 092-093-282145- KOSSUTH-WINNEBAGO-HANCOCK-POCAHONTAS-HUMBOLDT-WRIGHT-CALHOUN- WEBSTER-HAMILTON-GREENE-BOONE-GUTHRIE-DALLAS-ADAIR-MADISON-ADAMS- UNION-TAYLOR-RINGGOLD- INCLUDING THE CITIES OF...ALGONA...FOREST CITY...LAKE MILLS... GARNER...BRITT...KANAWHA...POCAHONTAS...LAURENS...ROLFE...FONDA... GILMORE CITY...HUMBOLDT...EAGLE GROVE...CLARION...BELMOND... ROCKWELL CITY...MANSON...LAKE CITY...POMEROY...FORT DODGE... WEBSTER CITY...JEFFERSON...BOONE...GUTHRIE CENTER...PANORA... BAYARD...CASEY...PERRY...WAUKEE...ADEL...GREENFIELD...STUART... ADAIR...FONTANELLE...WINTERSET...EARLHAM...CORNING...CRESTON... BEDFORD...LENOX...NEW MARKET...MOUNT AYR 243 PM CDT SAT JUN 28 2014 ...LINE OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN... A NORTH TO SOUTH LINE OF THUNDERSTORMS HAS DEVELOPED OVER WESTERN IOWA AND IS TRACKING TO THE NORTH TO NORTHEAST. THESE THUNDERSTORMS WILL TRACK OVER THE SAME AREA REPEATEDLY AND WILL BE CAPABLE OF DROPPING ONE TO TWO INCHES OF RAIN IN A VERY SHORT AMOUNT OF TIME. THIS WILL LEAD TO LOCALIZED FLOODING IN AREAS WITH POOR DRAINAGE. PLEASE STAY TUNED FOR ANY FUTURE UPDATES AND POSSIBLE WARNINGS. KS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 437 PM CDT SAT JUN 28 2014 IAZ006-007-016-017-025-026-036-037-048-049-060-061-073-074-084- 085-095-096-282300- WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-WRIGHT-FRANKLIN-HAMILTON- HARDIN-STORY-MARSHALL-POLK-JASPER-WARREN-MARION-LUCAS-MONROE- WAYNE-APPANOOSE- INCLUDING THE CITIES OF...FOREST CITY...LAKE MILLS...NORTHWOOD... MANLY...GARNER...BRITT...KANAWHA...MASON CITY...CLEAR LAKE... EAGLE GROVE...CLARION...BELMOND...HAMPTON...WEBSTER CITY... IOWA FALLS...ELDORA...ACKLEY...AMES...MARSHALLTOWN...DES MOINES... NEWTON...INDIANOLA...NORWALK...CARLISLE...PELLA...KNOXVILLE... CHARITON...ALBIA...CORYDON...SEYMOUR...ALLERTON...HUMESTON... CENTERVILLE 437 PM CDT SAT JUN 28 2014 ...LINE OF THUNDERSTORMS PRODUCING HEAVY RAIN WITH STRONG WINDS POSSIBLE... A NORTH TO SOUTH LINE OF THUNDERSTORMS IS TRACKING ACROSS CENTRAL IOWA TO THE NORTH TO NORTHEAST. THESE THUNDERSTORMS WILL TRACK OVER THE SAME AREA REPEATEDLY AND WILL BE CAPABLE OF DROPPING ONE TO TWO INCHES OF RAIN IN A VERY SHORT AMOUNT OF TIME. THIS WILL LEAD TO LOCALIZED FLOODING IN AREAS WITH POOR DRAINAGE. IN ADDITION...STRONG AND GUSTY WINDS WILL BE POSSIBLE WITH THUNDERSTORMS...WITH GUSTS UP TO 50 MPH OR HIGHER. PLEASE STAY TUNED FOR ANY FUTURE UPDATES AND POSSIBLE WARNINGS.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 521 PM CDT SAT JUN 28 2014 IAZ027-028-038-039-050-062-075-086-097-290000- BUTLER-BREMER-GRUNDY-BLACK HAWK-TAMA-POWESHIEK-MAHASKA-WAPELLO- DAVIS- 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...OSKALOOSA...OTTUMWA...BLOOMFIELD 521 PM CDT SAT JUN 28 2014 ...LINE OF THUNDERSTORMS PRODUCING HEAVY RAIN WITH STRONG WINDS POSSIBLE... A NORTH TO SOUTH LINE OF THUNDERSTORMS IS TRACKING ACROSS CENTRAL IOWA TO THE NORTH TO NORTHEAST. THESE THUNDERSTORMS WILL TRACK OVER THE SAME AREA REPEATEDLY AND WILL BE CAPABLE OF DROPPING ONE TO TWO INCHES OF RAIN IN A VERY SHORT AMOUNT OF TIME. THIS WILL LEAD TO LOCALIZED FLOODING IN AREAS WITH POOR DRAINAGE. IN ADDITION...STRONG AND GUSTY WINDS WILL BE POSSIBLE WITH THUNDERSTORMS...WITH GUSTS UP TO 50 MPH OR HIGHER. PLEASE STAY TUNED FOR ANY FUTURE UPDATES AND POSSIBLE WARNINGS. AWB
The Des Moines radar (KDMX), 116 km away, was scanning. The volume nearest the first event began at 23:41 UTC.
1 thunderstorm wind. Local standard time, as filed.
Reports of several trees down in Traer with roof damage to a home on the south side of town.
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: 515388.