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Iowa storm reports for August 18, 2017

NOAA recorded 10 hail reports, 1 wind report and 3 tornado reports in Iowa on August 18, 2017.

in Iowa
14
Storm reports
Near 43.09, -95.55, IA
1.75 in
Largest hail
About 53 miles from Sioux Falls, SD
81 mph
Highest gust
Highest rating EF2, about 55 miles from Sioux Falls, SD
3
Tornado reports
Sources: NOAA/NWS Storm Prediction Center reports; damage surveys from the NWS Damage Assessment Toolkit

Hail, inches

  • 0.75
  • 1
  • 1.5
  • 2
  • 2.5
  • 3+

Dots: reports.

  • Wind report
  • Tornado and its path
  • Surveyed tornado path

Source: NOAA/NWS Storm Prediction Center, final severe weather database (from NOAA's Storm Data). Report day: 12:00 UTC on August 18, 2017 to 12:00 UTC the next day. Times are Central.

Select a dot or a path for the report. NWS survey teams walked the shaded paths after the storm; each is drawn at the widest width they found, so it can look wider than the damage at any one spot.

Reports by hour

Hail10, most at 8 PM

Wind1, most at 7 PM

Tornado3, most at 7 PM

Reports per hour, Central time. Each row has its own scale.

Every report

Source: NOAA/NWS Storm Prediction Center.

TimeRatingWherePath
7:47 PMEF1About 50 miles from Sioux Falls, SD1.63 mi long, 100 yd wide
8:07 PMEF2About 55 miles from Sioux Falls, SD5.14 mi long, 250 yd wide
9:21 PMEF0Near 42.85, -95.49, IA0.81 mi long, 50 yd wide

Reports are what observers recorded near a location, not a complete record of every storm. They don’t describe conditions at any building.