Alert archive / Iowa / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 113, NWS Des Moines, IA

May 23, 2007Carroll County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at May 23, 2007, 4:10 PM CDT for Carroll County, Iowa. It was in force for 35 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: May 23, 2007, 4:10 PM CDT (21:10 UTC)
Expired: May 23, 2007, 4:45 PM CDT
In force: 35 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Carroll County, IA

The radar

The Des Moines radar (KDMX), 97 km from the middle of the area, began a volume at 21:11 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
May 23, 4:25 PM CDT	HAIL 1	Glidden, IA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 3:11 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.2 hours before the alert went out and 157 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: 200 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KDMX 232109
SVRDMX
IAC027-232145-
/O.NEW.KDMX.SV.W.0113.070523T2110Z-070523T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
410 PM CDT WED MAY 23 2007

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CARROLL COUNTY IN WEST CENTRAL IOWA...

* UNTIL 445 PM CDT

* AT 407 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 6 MILES WEST OF COON RAPIDS...OR ABOUT 47 MILES
  SOUTHEAST OF IDA GROVE...AND MOVING NORTH AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GLIDDEN AND CARROLL BY 425 PM CDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
WEDNESDAY EVENING FOR WESTERN IOWA.

LAT...LON 4221 9490 4221 9465 4220 9464 4187 9464
      4186 9499

$$

VACHALEK

2 follow-up statements

000 
WWUS53 KDMX 232129
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
428 PM CDT WED MAY 23 2007

IAC027-232145-
/O.CON.KDMX.SV.W.0113.000000T0000Z-070523T2145Z/
CARROLL IA-
428 PM CDT WED MAY 23 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR EASTERN CARROLL COUNTY...

AT 423 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
 THIS STORM WAS LOCATED NEAR GLIDDEN...OR ABOUT 43 MILES SOUTHWEST OF
FORT DODGE...MOVING NORTH AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LANESBORO BY 435 PM CDT...

HAIL UP TO QUARTER SIZE WAS REPORTED BY THE CARROLL COUNTY SHERIFF 
AT 425 PM IN GLIDDEN. IF YOU ARE IN THE PATH OF THE STORM...TAKE 
IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
WEDNESDAY EVENING FOR WESTERN IOWA.

LAT...LON 4221 9490 4221 9465 4220 9464 4187 9464
      4186 9499

$$

KINNEY

000 
WWUS53 KDMX 232146
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
446 PM CDT WED MAY 23 2007

IAC027-232156-
/O.EXP.KDMX.SV.W.0113.000000T0000Z-070523T2145Z/
CARROLL IA-
446 PM CDT WED MAY 23 2007

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CARROLL COUNTY EXPIRES
AT 445 PM CDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
WEDNESDAY EVENING FOR WESTERN IOWA.

LAT...LON 4221 9490 4221 9465 4220 9464 4187 9464
      4186 9499

$$

MOYER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 10:04 AM CDT	Severe Thunderstorm Warning	DMX	Jasper	41 min
May 23, 1:55 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	18 min
May 23, 3:08 PM CDT	Severe Thunderstorm Warning	DMX	Cass	52 min
May 23, 3:40 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Guthrie	36 min
May 23, 3:44 PM CDT	Flash Flood Watch	DMX	Adair, Adams, Audubon, Boone, Calhoun, Carroll and 19 more	19 hr
May 23, 3:45 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Cass	45 min
May 23, 4:50 PM CDT	Severe Thunderstorm Warning	DMX	Hancock	25 min
May 23, 4:54 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas	51 min
May 23, 5:02 PM CDT	Flash Flood Warning	DMX	Carroll	6 hr
May 23, 5:16 PM CDT	Severe Thunderstorm Warning	DMX	Hancock	29 min
May 23, 5:45 PM CDT	Severe Thunderstorm Warning	DMX	Dallas	45 min
May 23, 6:07 PM CDT	Severe Thunderstorm Warning	DMX	Polk	38 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2007 Every severe thunderstorm warning in 2007

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.