Alert archive / Iowa / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 64, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 9, 2021, 9:38 PM CDT for Ringgold County, Iowa. It was in force for 52 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 9, 2021, 9:38 PM CDT (02:38 UTC)
- Expired
- Jul 9, 2021, 10:30 PM CDT
- In force
- 52 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Ringgold County, IA
The radar
The Des Moines radar (KDMX), 120 km from the middle of the area, began a volume at 02:39 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 10:24 PM CDT | HAIL 1.5 | Mount Ayr, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 2.6 hours before the alert went out and 196 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
- 2603 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1447 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 8.1
The text
As transmitted.
982
WUUS53 KDMX 100238
SVRDMX
IAC159-100330-
/O.NEW.KDMX.SV.W.0064.210710T0238Z-210710T0330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Des Moines IA
938 PM CDT Fri Jul 9 2021
The National Weather Service in Des Moines has issued a
* Severe Thunderstorm Warning for...
Eastern Ringgold County in south central Iowa...
* Until 1030 PM CDT.
* At 937 PM CDT, a severe thunderstorm was located north of Mount
Ayr, moving south at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Mount Ayr around 945 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4081 9431 4084 9413 4066 9401 4057 9402
4057 9429
TIME...MOT...LOC 0237Z 341DEG 21KT 4076 9423
HAIL...1.00IN
WIND...60MPH
$$
Ansorge2 follow-up statements
370
WWUS53 KDMX 100259
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
959 PM CDT Fri Jul 9 2021
IAC159-100330-
/O.CON.KDMX.SV.W.0064.000000T0000Z-210710T0330Z/
Ringgold IA-
959 PM CDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR EASTERN RINGGOLD COUNTY...
At 959 PM CDT, a severe thunderstorm was located north of Mount Ayr,
moving south at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mount Ayr.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4081 9431 4084 9413 4066 9401 4057 9402
4057 9429
TIME...MOT...LOC 0259Z 339DEG 13KT 4076 9425
HAIL...1.00IN
WIND...60MPH
$$
Ansorge528
WWUS53 KDMX 100313
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
1013 PM CDT Fri Jul 9 2021
IAC159-100330-
/O.CON.KDMX.SV.W.0064.000000T0000Z-210710T0330Z/
Ringgold IA-
1013 PM CDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR EASTERN RINGGOLD COUNTY...
At 1013 PM CDT, a severe thunderstorm was located just north of
Mount Ayr, moving south at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mount Ayr and Mt Ayr Municipal Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4083 9420 4079 9410 4066 9401 4057 9402
4057 9429 4081 9431
TIME...MOT...LOC 0313Z 341DEG 15KT 4074 9424
HAIL...1.00IN
WIND...60MPH
$$
AnsorgeThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 9:16 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 44 min |
| Jul 9, 9:31 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 15 min |
| Jul 9, 10:21 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 39 min |
| Jul 9, 11:41 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 49 min |
| Jul 9, 11:56 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass | 49 min |
| Jul 10, 12:41 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Ringgold, Taylor, Union | 64 min |
| Jul 10, 2:49 PM CDT | Special Weather Statement | DMX | Carroll, Crawford, Sac | 56 min |
| Jul 10, 4:36 PM CDT | Tornado Warning | DMX | Dallas, Guthrie | 24 min |
| Jul 10, 5:00 PM CDT | Tornado Warning | DMX | Dallas | 30 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2021Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.