Alert archive / Iowa / Tornado Warnings in 2004
Tornado Warning 103, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Aug 26, 2004, 6:55 PM CDT for Sac County, Iowa. It was in force for 50 min. 2 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 26, 2004, 6:55 PM CDT (23:55 UTC)
- Expired
- Aug 26, 2004, 7:45 PM CDT
- In force
- 50 min
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
County Sac County, IA
The radar
The Des Moines radar (KDMX), 132 km from the middle of the area, began a volume at 23:58 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 |
|---|---|---|---|
| Aug 26, 6:57 PM CDT | HAIL 1.75 | 5 S Odebolt, IA | |
| Aug 26, 7:17 PM CDT | HAIL 0.88 | 3 S Lake View, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.9 hours before the alert went out and 148 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.
- Mixed-layer CAPE
- 67 J/kg
- Mixed-layer CIN
- -399 J/kg
- Mixed-layer LCL
- 1850 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDMX 262355 TORDMX IAC161-270045- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 654 PM CDT THU AUG 26 2004 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN SAC COUNTY IN WEST CENTRAL IOWA. * UNTIL 745 PM CDT. * AT 650 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES SOUTH OF ODEBOLT...OR 60 MILES WEST OF FORT DODGE...AND MOVING EAST AT 25 MPH. * THE TORNADO WILL REMAIN OVER MAINLY RURAL AREAS OF SOUTHERN SAC COUNTY...INCLUDING THE TOWNS OF WALL LAKE MUNICIPAL AIRPORT...WALL LAKE AND AUBURN. THIS WARNING REPLACES A SEVERE THUNDERSTORM WARNING PREVIOUSLY IN EFFECT. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4233 9532 4221 9532 4222 9487 4234 9488 $$ DONAVON
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 3:53 PM CDT | Severe Thunderstorm Warning | DMX | Hancock | 52 min |
| Aug 26, 3:57 PM CDT | Tornado Warning | DMX | Pocahontas | 48 min |
| Aug 26, 4:07 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 53 min |
| Aug 26, 4:19 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 41 min |
| Aug 26, 4:46 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock | 59 min |
| Aug 26, 4:48 PM CDT | Tornado Warning | DMX | Humboldt | 42 min |
| Aug 26, 5:04 PM CDT | Tornado Warning | DMX | Wright | 41 min |
| Aug 26, 5:46 PM CDT | Tornado Warning | DMX | Wright | 29 min |
| Aug 26, 6:37 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 53 min |
| Aug 26, 6:41 PM CDT | Tornado Warning | DMX | Crawford | 49 min |
| Aug 26, 6:42 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 48 min |
| Aug 26, 6:52 PM CDT | Tornado Warning | DMX | Taylor | 53 min |
| Aug 26, 6:54 PM CDT | Tornado Warning | DMX | Greene | 51 min |
| Aug 26, 6:56 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 44 min |
Nearby
Tornado Warnings in Iowa, 2004Every tornado warning in 2004Tornadoes in 2004
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.