The severe drought that began in June across much of northeast Iowa continued through the entire month of July for all or portions of Chickasaw, Fayette, Floyd, Howard, Mitchell and Winneshiek Counties.
Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 ARX wrote it up.
The severe drought that began in June across much of northeast Iowa continued through the entire month of July for all or portions of Chickasaw, Fayette, Floyd, Howard, Mitchell and Winneshiek Counties.
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 La Crosse, WI wrote its last area forecast discussion before the first event at Jun 30, 9:52 PM CST, 2 hours 8 minutes earlier.
Area Forecast Discussion National Weather Service La Crosse WI 1052 PM CDT Wed Jun 30 2021 .SHORT TERM...(This evening through Thursday) Issued at 237 PM CDT Wed Jun 30 2021 Next in series of mid level troughs working into the western Great Lakes this afternoon. While shear remains weak/low, seeing enough destabilization for isolated shower and storm development in parts of central Wisconsin given SBCAPE up to 1500 J/Kg and steep low level lapse rates. Coverage will remain low so most will just see diurnal cumulus field fade going into this evening. After extensive valley fog scenario this morning, far more elements going against that happening again tonight. Drier low level air advecting in, nearly full dry day, and slightly higher boundary layer winds should keep any fog early Thursday morning far more isolated. Meanwhile another short wave trough follows the first dropping into the region early Thursday. This feature is a bit stronger and will push low level moisture even further south. Still some hints in short term guidance of scattered shower and storms developing along this passing boundary, especially to the south where more instability will still be waiting. Rain chances have been trending drier but kept a small threat in far south. Could also be a few degrees cooler than Wednesday with weak cold air advection with wave passage. .LONG TERM...(Thursday night through Wednesday) Issued at 237 PM CDT Wed Jun 30 2021 Heading into the holiday weekend, warm and dry conditions continue to headline the first half of the extended forecast. A high- amplitude trough will dig its way into the eastern part of the Great Lakes region from the north, putting our region in an area of broad subsidence. After seasonably warm temps on Friday, eastward propagation of a ridge across the Midwest will lead to an influx of warm, dry air from the southwest on Saturday and Sunday. Temps could exceed 90F, especially Sunday. A chance of rain returns Monday into Tuesday. Lower amplitude flow with a series of shortwave troughs moves across the upper Midwest throughout the week. The passage of a weak cold front Tuesday morning could also kick off some precip, but the predictability of rain events remains low at this time given model differences in these features. && .AVIATION...(For the 06Z TAFS through 06Z Thursday night) Issued at 1052 PM CDT Wed Jun 30 2021 VFR conditions are expected through Thursday evening. An area of high pressure over Canada with the ridge axis extending southwest into the region will keep the weather quiet. Expect light northeast winds with speeds under 10 knots and little to no cloud cover. && .ARX WATCHES/WARNINGS/ADVISORIES... WI...None. MN...None. IA...None. && SHORT TERM...TJS LONG TERM...KAA AVIATION...04
Hazardous Weather Outlook National Weather Service La Crosse WI 812 AM CDT Wed Jun 30 2021 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029- 032>034-041>044-053>055-061-011200- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau- Adams-Vernon-Crawford-Richland-Grant- 812 AM CDT Wed Jun 30 2021 This Hazardous Weather Outlook is for portions of southeast Minnesota...northeast Iowa and southwest into central Wisconsin. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Storm chances return for Monday and Tuesday. It is too early to discern if there would be a severe weather threat. .SPOTTER INFORMATION STATEMENT... No action needed. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. KAA nofwd
The national radar mosaic for the moment the first event began.
6 drought. Local standard time, as filed.
The severe drought that began in June across Chickasaw County continued for most of the county through July. The northern portion of the county received enough rain in the middle of the month to be removed from the severe drought.
The severe drought that began in June across Fayette County continued for much of the county through July. The southern half of the county received enough rain in the middle of the month to be removed from the severe drought.
The severe drought that began in June across Floyd County continued for almost all of the county through July. The northeast corner of the county received enough rain in the middle of the month to be removed from the severe drought.
The severe drought that began in June across Howard County continued for a small part of the county through July. Almost all of the county received enough rain in the middle of the month to be removed from the severe drought except for a small portion in the northwest part of the county.
The severe drought that began in June across Mitchell County continued for most of the county through July. The southeast corner of the county received enough rain in the middle of the month to be removed from the severe drought.
The severe drought that began in June across Winneshiek County continued for a small part of the county through July. Almost all of the county received enough rain in the middle of the month to be removed from the severe drought except for a small portion in the southwest part of the county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2021Every state in 2021This day in weather historyWarnings in Iowa, July 2021
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: 973435, 973437, 973439, 973442, 973444, 973446.