Alert archive / Iowa / Special Weather Statements in 2021
Special Weather Statement, NWS Des Moines, IA
NWS Des Moines, IA issued this special weather statement at Apr 7, 2021, 1:55 PM CDT for Ringgold County, Iowa. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 7, 2021, 1:55 PM CDT (18:55 UTC)
- Expired
- Apr 7, 2021, 2:30 PM CDT
- In force
- 35 min
- Issued by
- NWS Des Moines, IA
County Ringgold County, IA
The radar
The Des Moines radar (KDMX), 112 km from the middle of the area, began a volume at 18:56 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 6.9 hours before the alert went out and 199 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 626 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, 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 this special weather statement went out at Apr 7, 6:38 AM CDT, 7 hours 17 minutes earlier.
Area forecast discussion, Apr 7, 6:38 AM CDT, 7 hours 17 minutes before
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</html>Hazardous weather outlook, Apr 7, 3:07 AM CDT, 10 hours 48 minutes before
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<div class="status" id="status">Temporary Notice</div>
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</html>In the hours before
Special weather statement, Apr 7, 1:55 PM CDT, 0 minutes before
Special Weather Statement National Weather Service Des Moines IA 155 PM CDT Wed Apr 7 2021 IAZ093-094-071930- Ringgold IA-Decatur IA- 155 PM CDT Wed Apr 7 2021 ...Small Hail Possible in Eastern Ringgold County... At 154 PM CDT, Doppler radar was tracking a strong thunderstorm 8 miles southeast of Mount Ayr, moving north at 40 mph. Penny size hail and winds in excess of 30 mph will be possible with this storm. Locations impacted include... Sun Valley Lake, Kellerton, Grand River, Tingley, Ellston and Beaconsfield. LAT...LON 4090 9422 4089 9391 4057 9399 4057 9421 TIME...MOT...LOC 1854Z 187DEG 37KT 4061 9414 Martin
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 2:26 PM CDT | Special Weather Statement | DMX | Clarke, Decatur | 34 min |
| Apr 7, 2:52 PM CDT | Special Weather Statement | DMX | Madison | 23 min |
| Apr 7, 3:23 PM CDT | Special Weather Statement | DMX | Polk | 22 min |
Nearby
Special Weather Statements in Iowa, 2021Every special weather statement in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.