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107 MPH Gust
Date: 20 Jun 05:30 AM
Votes: Good: 5
Bad: 0 Abstain: 0
There continues to be no shortage of interesting things to denote from the storms of last Wednesday (17 June 2026) including low June surface pressure and a rapid change in dew point. Today's featured chart looks into the wind reports from the Marshalltown Airport. A gust of 107 MPH is shown at 5:48 AM with a sustained peak wind speed of 68 MPH just a few minutes prior. NWS Des Moines has an excellent event summary page with more details on this damaging wind event.
The featured media can be generated on-demand here
.| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Svr Tstorm | 162 | 0 | 0 | 0 | 0 | 2 | 0 | 5 |
| Flash Flood | 39 | 0 | 0 | 0 | 0 | 0 | 0 | --- |
ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD
SVR+TOR Warnings Issued: 161 Verified: 83 [51.6%] Polygon Size Versus County Size [26.0%] Average Perimeter Ratio [28.7%] Percentage of Warned Area Verified (15km) [17.0%] Average Storm Based Warning Size [2776 sq km] Probability of Detection(higher is better) [0.81] False Alarm Ratio (lower is better) [0.48] Critical Success Index (higher is better) [0.46]
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