Iowa sat in an area of northwest flow aloft, and a shortwave moving through the northwest flow was able to spark off a few elevated storms across far north central Iowa that resulted in a pair of hail reports.
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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.
Iowa sat in an area of northwest flow aloft, and a shortwave moving through the northwest flow was able to spark off a few elevated storms across far north central Iowa that resulted in a pair of hail reports.
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 8, 2:29 PM CST, 47 minutes earlier.
Area Forecast Discussion National Weather Service Des Moines IA 329 PM CDT WED JUN 8 2016 .SHORT TERM.../Tonight/ Issued at 330 PM CDT Wed Jun 8 2016 Warm advection underway across Iowa on backside of retreating high pressure. 850mb thermal gradient crossing the state today will continue to push northeast on decent southwest winds. Theta-e advection also quite good and maximized in northern Iowa into southern Minnesota currently along moisture and instability gradient. This gradient continues to push northeast this evening and into tonight and will act as focus for convection during this time. Anticipate scattered storms to persist in the far north this evening pushing to the east of the area this evening. However, additional convection is expected later tonight as low level jet focuses into convergent area just north of Iowa by late evening. This convection will drift southeast into far northern and northeastern portions of forecast area overnight. This convection will be elevated with some non severe hail possible and locally heavy rainfall. With focus of storms to the north overnight, much of the rest of the forecast area will see little threat for rainfall and much warmer readings tonight as warm sector moves into the state. .LONG TERM.../Thursday through Wednesday/ Issued at 330 PM CDT Wed Jun 8 2016 Warm sector will have expanded through much of the state on Thursday with temperatures climbing into the lower 90s in most locations. There will remain the threat of thunderstorms in the far northeast in the morning where some residual overnight convection may be occurring. With little focus for convection the rest of the day, there seems low chance of thunderstorms on Thursday. Iowa will be on the margins of convection on Thursday night once again with focus mainly in southern MN and WI were surface front will act to focus moisture transport and thunderstorm development overnight. Proximity of northern IA may allow for a few storms in the far north but majority of storms should remain north and east of Iowa. GFS continues to produce storms in the LLJ axis overnight as well and while not totally out of the question, seems overdone in extent of coverage given its recent bias of overconvecting. Have chosen to go with more of the Euro/NAM output which keeps convection tied to convergent areas to the north. This generally scenario for precipitation threat continues into Friday night as well. Meanwhile...daytime temperatures on Friday and Saturday will be well into the 90s for the highest readings of the year so far. Good southwest winds and sunshine may push readings even higher and will continue to monitor. Fortunately, it hasn't been overly moist recently and crops have yet to hit peak evapotranspiration stage, therefore dewpoints should mix out into the 60s on both Friday and Saturday. This will help keep heat index values from rising much above 100 on both days. These values are close to advisory levels and will have to also consider early season conditions as people have yet to acclimate to hot airmasses. For now, will continue to stress the early season heat in various products. Record highs may be approach with most ranging from mid-upper 90s north to 97-103 south. Models diverge by Sunday with GFS settling boundary southward into state and Euro keeping the front in MN. Will keep temperatures slightly cooler on Sunday but still likely a very warm/hot day and even Monday looks warm before both GFS/Euro bring front through late in the day with a more widespread chances of thunderstorms across all of central Iowa. Large divergence in models by the middle of next week with Euro bring closed low and wet conditions to Iowa and GFS remaining progressive with boundary and cooler and drier weather through midweek. Storms on Monday into early Tuesday do not appear particularly intense at this point with relatively weak wind fields limiting shear and overall storm organization. && .AVIATION.../For the 18Z TAFS through 18Z Thursday afternoon/ Issued at 1227 PM CDT Wed Jun 8 2016 Widespread VFR conditions are expected across the forecast area as warm advection intensifies. There will be a thunderstorms threat on the northern and northeast edge of the area near the Minnesota border overnight where best theta-e advection exists. Otherwise, any ceilings will remain at or above 10kft with unrestricted visibilities. Surface winds will be from the south to southeast through tonight but become southwest on Thursday as warm sector spread across the state. && .DMX Watches/Warnings/Advisories...None. && SHORT TERM...Cogil LONG TERM...Cogil AVIATION...Cogil
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 347 PM CDT WED JUN 8 2016 IAZ004>007-016-017-025>028-037>039-049-050-062-091100- EMMET-KOSSUTH-WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-WRIGHT-FRANKLIN- BUTLER-BREMER-HARDIN-GRUNDY-BLACK HAWK-MARSHALL-TAMA-POWESHIEK- 347 PM CDT WED JUN 8 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TONIGHT SCATTERED NON SEVERE THUNDERSTORMS ARE FORECAST INTO TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SCATTERED NON SEVERE THUNDERSTORMS ARE FORECAST THROUGH MID MORNING THURSDAY. ON FRIDAY AND SATURDAY...THE COMBINATION OF HEAT AND HUMIDITY WILL PUSH HEAT INDEX VALUES FROM 95 TO 100 DURING THE AFTERNOON AND EARLY EVENING HOURS. ADDITIONAL THUNDERSTORMS ARE EXPECTED LATE SUNDAY THROUGH TUESDAY. THE POTENTIAL FOR SEVERE THUNDERSTORMS REMAINS LOW AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. IAZ015-023-024-033>036-044>048-057>061-070>075-081>086-092>097- 091100- PALO ALTO-POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER-HAMILTON- CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-POLK- JASPER-CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION- CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE- APPANOOSE-DAVIS- 347 PM CDT WED JUN 8 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY ON FRIDAY AND SATURDAY...HOT TEMPERATURES AND MODERATE HUMIDITY WILL PRODUCE HEAT INDEX VALUES OF AROUND 100 DURING THE AFTERNOON AND EARLY EVENING HOURS. ADDITIONAL THUNDERSTORMS ARE EXPECTED LATE SUNDAY THROUGH TUESDAY. THE POTENTIAL FOR SEVERE THUNDERSTORMS REMAINS LOW AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Minneapolis radar (KMPX), 169 km away, was scanning. The volume nearest the first event began at 21:15 UTC.
2 hail. Local standard time, as filed.
Emergency Manager reported grape sized hail. Relayed via the Swea City Fire Chief.
Kossuth County EM reported dime to nickel sized hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2016Every state in 2016This day in weather historyWarnings in Iowa, June 2016
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: 633525, 633526.