Alert archive / Iowa / Special Weather Statements in 2021

Special Weather Statement, NWS Des Moines, IA

June 19, 2021Davis County, Iowa

NWS Des Moines, IA issued this special weather statement at Jun 19, 2021, 3:59 AM CDT for Davis County, Iowa. It was in force for 46 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: Jun 19, 2021, 3:59 AM CDT (08:59 UTC)
Expired: Jun 19, 2021, 4:45 AM CDT
In force: 46 min
Issued by: NWS Des Moines, IA

County Davis County, IA

The radar

The Des Moines radar (KDMX), 151 km from the middle of the area, began a volume at 09:01 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

Davenport, (KDVN), launched 00:00Z, 9.0 hours before the alert went out and 195 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: 4 J/kg
Mixed-layer CIN: -335 J/kg
Mixed-layer LCL: 2572 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

481 
WWUS83 KDMX 190859
SPSDMX

Special Weather Statement
National Weather Service Des Moines IA
359 AM CDT Sat Jun 19 2021
 
IAZ096-097-190945-
Appanoose IA-Davis IA-
359 AM CDT Sat Jun 19 2021

...Small Hail in Appanoose and Davis Counties...

At 358 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles northwest of Bloomfield, moving east at 50 mph.

Penny size hail will be possible with this storm.

Locations impacted include...
Centerville, Bloomfield, Lake Sundown, Moulton, Pulaski, Drakesville,
Unionville, Udell, Lake Wapello State Park, Sharon Bluffs State Park
and Bloomfield Municipal Airport.

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
south central and southeastern Iowa.

LAT...LON 4078 9291 4090 9255 4082 9218 4060 9218
      4060 9220 4059 9263
TIME...MOT...LOC 0858Z 289DEG 41KT 4080 9255 

$$

Hagenhoff

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 9:56 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Madison, Marion, Warren	49 min
Jun 18, 10:06 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Clarke, Madison, Union	39 min
Jun 18, 10:39 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Monroe, Wayne	51 min
Jun 18, 10:43 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Madison, Union, Warren	47 min
Jun 18, 10:45 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion, Monroe, Wapello	45 min
Jun 18, 10:54 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Cass	51 min
Jun 18, 11:05 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion	25 min
Jun 18, 11:10 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Lucas, Monroe, Wayne	50 min
Jun 18, 11:14 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison	46 min
Jun 18, 11:19 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska	26 min
Jun 18, 11:22 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Monroe, Wapello	53 min
Jun 18, 11:25 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Wayne	50 min
Jun 18, 11:32 PM CDT	Severe Thunderstorm Warning	DMX	Cass	28 min
Jun 18, 11:37 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Union	53 min
Jun 18, 11:54 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Warren	36 min
Jun 18, 11:55 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Lucas, Monroe, Wayne	50 min
Jun 18, 11:59 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Clarke, Madison, Ringgold, Union	46 min
Jun 19, 12:13 AM CDT	Severe Thunderstorm Warning	DMX	Adams	26 min
Jun 19, 12:14 AM CDT	Severe Thunderstorm Warning	DMX	Davis, Wapello	31 min
Jun 19, 12:25 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Marion, Warren	35 min
Jun 19, 12:29 AM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis	46 min
Jun 19, 12:44 AM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe	31 min

Nearby

Special Weather Statements in Iowa, 2021 Every 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.