Alert archive / Iowa / Tornado Warnings in 2001
Tornado Warning 30, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at May 1, 2001, 8:04 PM CDT for Guthrie County, Iowa. It was in force for 31 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- May 1, 2001, 8:04 PM CDT (01:04 UTC)
- Expired
- May 1, 2001, 8:35 PM CDT
- In force
- 31 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Guthrie County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 1, 8:10 PM CDT | Thunderstorm Wind 52 E | Guthrie Center, IA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
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 1, 3:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.1 hours before the alert went out and 170 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
- 1236 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 2701 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDMX 020105 TORDSM IAC077-020135- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 804 PM CDT TUE MAY 1 2001 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN GUTHRIE COUNTY IN WEST CENTRAL IOWA * UNTIL 835 PM CDT * AT 802 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 9 MILES NORTH OF GUTHRIE CENTER...OR ABOUT 51 MILES WEST OF DES MOINES...MOVING EAST AT 20 MPH. * THE TORNADO WILL BE... 8 MILES NORTH OF GUTHRIE CENTER NOW NEAR YALE AROUND 820 PM THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. LAT...LON 4186 9452 4167 9452 4168 9429 4186 9430 COGIL
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 7:35 PM CDT | Tornado Warning | DMX | Carroll, Greene, Guthrie | 30 min |
| May 1, 8:48 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 42 min |
| May 1, 9:25 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 40 min |
| May 1, 9:38 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 32 min |
| May 1, 10:04 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 26 min |
| May 1, 10:44 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 41 min |
| May 1, 10:48 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 32 min |
| May 2, 1:50 AM CDT | Flash Flood Warning | DMX | Calhoun, Sac | 3 hr |
Nearby
Tornado Warnings in Iowa, 2001Every tornado warning in 2001Tornadoes in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.