Alert archive / Iowa / Tornado Warnings in 2003

Tornado Warning 24, NWS Des Moines, IA

July 9, 2003Hamilton County, Iowa

NWS Des Moines, IA issued this tornado warning at Jul 9, 2003, 5:51 PM CDT for Hamilton County, Iowa. It was in force for 9 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, 2003, 5:51 PM CDT (22:51 UTC)
Expired: Jul 9, 2003, 6:00 PM CDT
In force: 9 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Hamilton County, IA

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 9, 2:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.9 hours before the alert went out and 258 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: 3 J/kg
Mixed-layer CIN: -462 J/kg
Mixed-layer LCL: 2332 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: -17 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.

107 
WFUS53 KDMX 092251
TORDMX
IAC079-092300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
551 PM CDT WED JUL 9 2003

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL HAMILTON COUNTY IN CENTRAL IOWA

* UNTIL 600 PM CDT

* AT 548 PM...SPOTTERS REPORTED A TORNADO 4 MILES NORTHEAST OF
  KAMRAR...OR ABOUT 27 MILES EAST OF FORT DODGE...MOVING EAST AT 35
  MPH.

* THE STORM WILL BE...

  5 MILES SOUTH OF WILLIAMS AROUND 600 PM.

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.

LAT...LON 4252 9374 4234 9377 4231 9347 4251 9348

MYERS

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 1:35 AM CDT	Severe Thunderstorm Warning	DMX	Crawford	55 min
Jul 9, 4:57 AM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene	48 min
Jul 9, 5:21 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Greene, Guthrie	54 min
Jul 9, 5:46 AM CDT	Severe Thunderstorm Warning	DMX	Polk, Story	44 min
Jul 9, 6:14 AM CDT	Severe Thunderstorm Warning	DMX	Warren	46 min
Jul 9, 6:24 AM CDT	Severe Thunderstorm Warning	DMX	Jasper	51 min
Jul 9, 3:01 PM CDT	Severe Thunderstorm Warning	DMX	Audubon	59 min
Jul 9, 3:38 PM CDT	Severe Thunderstorm Warning	DMX	Cass	52 min
Jul 9, 4:03 PM CDT	Severe Thunderstorm Warning	DMX	Audubon	42 min
Jul 9, 4:13 PM CDT	Severe Thunderstorm Warning	DMX	Hardin	47 min
Jul 9, 4:25 PM CDT	Severe Thunderstorm Warning	DMX	Cass	50 min
Jul 9, 4:48 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie	42 min
Jul 9, 4:58 PM CDT	Severe Thunderstorm Warning	DMX	Adams	47 min
Jul 9, 6:10 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold	50 min
Jul 9, 6:22 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Hardin	38 min
Jul 9, 6:22 PM CDT	Severe Thunderstorm Warning	DMX	Davis	53 min

Nearby

Tornado Warnings in Iowa, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.