Alert archive / Iowa / Tornado Warnings in 2007

Tornado Warning 43, NWS Des Moines, IA

August 28, 2007Carroll County, Crawford County, Iowa

NWS Des Moines, IA issued this tornado warning at Aug 28, 2007, 6:21 PM CDT for Carroll County, Crawford County, Iowa. It was in force for 24 min. 3 reports 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
Aug 28, 2007, 6:21 PM CDT (23:21 UTC)
Expired
Aug 28, 2007, 6:45 PM CDT
In force
24 min
Issued by
NWS Des Moines, IA
Area
Counties, with a storm outline in the text

Counties Carroll County, IA, Crawford County, IA

The radar

The Des Moines radar (KDMX), 102 km from the middle of the area, began a volume at 23:22 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

TimeReportWhereRemark
Aug 28, 6:44 PM CDTTSTM WND GST 582 E Templeton, IATRAINED SPOTTER MEASURED WIND GUSTS UP TO 58 MPH.
Aug 28, 6:44 PM CDTTSTM WND GST 68Templeton, IA50 YEAR OLD LARGE TREE DOWN...ALONG WITH SEVERAL OTHER LIMBS COVERING ROADS IN THE TOWN OF TEMPLETON.
Aug 28, 6:55 PM CDTTSTM WND DMGGlidden, IATREES DOWN IN TOWN...ONE ON FIRE.

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.

IssuedProductOfficeLasted
Aug 28, 5:30 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.4 hours before the alert went out and 145 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-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2007-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 438 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2007-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
438 J/kg
Mixed-layer CIN
-240 J/kg
Mixed-layer LCL
1545 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 282321
TORDMX
IAC027-047-282345-
/O.NEW.KDMX.TO.W.0043.070828T2321Z-070828T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
621 PM CDT TUE AUG 28 2007

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  CARROLL COUNTY IN WEST CENTRAL IOWA...
  SOUTHEASTERN CRAWFORD COUNTY IN WEST CENTRAL IOWA...

* UNTIL 645 PM CDT.

* AT 617 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES NORTH OF
  MANILLA...OR ABOUT 28 MILES SOUTHEAST OF IDA GROVE...MOVING EAST AT
  60 MPH.

* THE TORNADO WILL BE NEAR...
  7 MILES SOUTH OF CARROLL BY 635 PM CDT...
  7 MILES SOUTH OF GLIDDEN BY 640 PM CDT...
  6 MILES NORTH OF COON RAPIDS BY 645 PM CDT...

IN ADDITION TO THE TORNADO...THIS STORM IS ALSO EXPECTED TO PRODUCE  
DESTRUCTIVE STRAIGHT LINE WINDS. AT 620 PM...A NATIONAL WEATHER 
SERVICE SPOTTER ON THE SOUTH SIDE OF DENISON REPORTED TREES DOWN AND 
WINDS TO 70 MPH.

THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR...SEEK SHELTER IN A REINFORCED BUILDING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
TUESDAY EVENING FOR NORTHWESTERN IOWA.

LAT...LON 4210 9464 4186 9464 4187 9527 4212 9527
TIME...MOT...LOC 2321Z 274DEG 55KT 4198 9515

$$

JUNGBLUTH
1 follow-up statement
000 
WWUS53 KDMX 282332
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
631 PM CDT TUE AUG 28 2007

IAC027-047-282345-
/O.CON.KDMX.TO.W.0043.000000T0000Z-070828T2345Z/
CRAWFORD IA-CARROLL IA-
631 PM CDT TUE AUG 28 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR CARROLL
AND SOUTHEASTERN CRAWFORD COUNTIES...

AT 626 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A TORNADO.  THIS 
TORNADO WAS LOCATED NEAR ASPINWALL...OR ABOUT 32 MILES SOUTHEAST OF 
IDA GROVE...MOVING EAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  TEMPLETON BY 640 PM CDT...
  DEDHAM...WILLEY AND 9 MILES SOUTHWEST OF CARROLL AIRPORT BY 645 PM
  CDT...

SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM
WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A
REINFORCED BUILDING.

IN ADDITION TO THE TORNADO...THIS STORM IS PRODUCING DESTRUCTIVE 
STRAIGHT LINE WINDS THAT PRODUCE TREE AND ROOF DAMAGE IN DENISON 
BEFORE 630 PM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
TUESDAY EVENING FOR NORTHWESTERN IOWA.

LAT...LON 4210 9464 4186 9464 4187 9527 4212 9527
TIME...MOT...LOC 2331Z 277DEG 38KT 4195 9507

$$

JUNGBLUTH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 3:56 AM CDTFlash Flood WatchDMXAdair, Audubon, Black Hawk, Boone, Bremer, Butler and 25 more23 hr
Aug 28, 4:59 PM CDTSevere Thunderstorm WarningDMXSac46 min
Aug 28, 5:52 PM CDTSevere Thunderstorm WarningDMXCrawford38 min
Aug 28, 6:02 PM CDTFlash Flood WarningDMXWright6 hr
Aug 28, 6:11 PM CDTFlash Flood WarningDMXCalhoun6 hr
Aug 28, 6:21 PM CDTFlash Flood WarningDMXCrawford6 hr
Aug 28, 6:29 PM CDTSevere Thunderstorm WarningDMXAudubon, Guthrie46 min
Aug 28, 6:38 PM CDTFlash Flood WarningDMXWebster6 hr
Aug 28, 6:43 PM CDTSevere Thunderstorm WarningDMXCalhoun, Greene, Webster47 min
Aug 28, 6:46 PM CDTTornado WarningDMXCarroll, Greene44 min

Nearby

Tornado Warnings in Iowa, 2007Every tornado warning in 2007Tornadoes 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.