Alert archive / Iowa / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 62, NWS Des Moines, IA

July 9, 2021Ringgold County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 9, 2021, 9:16 PM CDT for Ringgold County, Iowa. It was in force for 44 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: Jul 9, 2021, 9:16 PM CDT (02:16 UTC)
Expired: Jul 9, 2021, 10:00 PM CDT
In force: 44 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 60.0 mph

County Ringgold County, IA

The radar

The Des Moines radar (KDMX), 110 km from the middle of the area, began a volume at 02:14 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 00:00Z, 2.3 hours before the alert went out and 185 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted.

785 
WUUS53 KDMX 100216
SVRDMX
IAC159-100300-
/O.NEW.KDMX.SV.W.0062.210710T0216Z-210710T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Des Moines IA
916 PM CDT Fri Jul 9 2021

The National Weather Service in Des Moines  has issued a

* Severe Thunderstorm Warning for...
  Northeastern Ringgold County in south central Iowa...

* Until 1000 PM CDT.

* At 915 PM CDT, a severe thunderstorm was located 12 miles south of
  Creston, moving southeast at 15 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  northeastern Ringgold County, including the following locations...
  Tingley and Shannon City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4073 9426 4089 9436 4090 9434 4090 9424
      4082 9411
TIME...MOT...LOC 0215Z 324DEG 13KT 4089 9430 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

Ansorge

2 follow-up statements

242 
WWUS53 KDMX 100240
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
940 PM CDT Fri Jul 9 2021

IAC159-100300-
/O.CON.KDMX.SV.W.0062.000000T0000Z-210710T0300Z/
Ringgold IA-
940 PM CDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHEASTERN RINGGOLD COUNTY...

At 939 PM CDT, a severe thunderstorm was located north of Mount Ayr, 
moving southeast 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...
Tingley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4085 9434 4089 9422 4082 9411 4073 9426
TIME...MOT...LOC 0239Z 324DEG 13KT 4082 9423 

HAIL...1.00IN
WIND...60MPH
 
$$

Ansorge

874 
WWUS53 KDMX 100255
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
955 PM CDT Fri Jul 9 2021

IAC159-100302-
/O.EXP.KDMX.SV.W.0062.000000T0000Z-210710T0300Z/
Ringgold IA-
955 PM CDT Fri Jul 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN RINGGOLD COUNTY
WILL EXPIRE AT 1000 PM CDT...
    
The severe thunderstorm which prompted the warning will expire at 
10:00pm. Another severe thunderstorm warning for central and 
southeastern Ringgold County remains until 10:30pm.

LAT...LON 4085 9434 4089 9422 4082 9411 4073 9426
TIME...MOT...LOC 0252Z 324DEG 13KT 4079 9420 

$$

Ansorge

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 9:31 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Ringgold, Union	15 min
Jul 9, 9:38 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold	52 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, 2021 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.