Date: 23 Apr 05:30 AM
Votes: Good: 11 Bad: 0 Abstain: 0
Past Weekend Minimum
Date: 23 Apr 05:30 AM
Votes: Good: 11
Bad: 0 Abstain: 0
This past weekend featured some chilly temperatures along with a brisk wind, which was a remarkable departure from the previous weekend with highs in the 80s. The NWS issued a number of freeze and frost headlines for each day of the weekend as the warm spring had some sensitive vegetation in a vulnerable state. The featured map presents a minimum temperature analysis over the weekend, including Friday morning, based on the 15 minute NCEP RTMA. This analyses is generally able to capture some topographic effects at 2.5 km resolution and some of those can be readily seen over the Mississippi River.
The featured media can be generated on-demand here
.| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Svr Tstorm | 12 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| Flash Flood | 3 | 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: 13 Verified: 4 [30.8%] Polygon Size Versus County Size [18.5%] Average Perimeter Ratio [24.0%] Percentage of Warned Area Verified (15km) [16.4%] Average Storm Based Warning Size [1051 sq km] Probability of Detection(higher is better) [0.56] False Alarm Ratio (lower is better) [0.69] Critical Success Index (higher is better) [0.25]