Alert archive / Iowa / Tornado Warnings in 2001

Tornado Warning 44, NWS Des Moines, IA

May 10, 2001Marion County, Iowa

NWS Des Moines, IA issued this tornado warning at May 10, 2001, 8:10 PM CDT for Marion County, Iowa. It was in force for 30 min. No storm report in the archive falls 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.

The facts

Issued: May 10, 2001, 8:10 PM CDT (01:10 UTC)
Expired: May 10, 2001, 8:40 PM CDT
In force: 30 min
Issued by: NWS Des Moines, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Marion 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
May 10, 4:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.2 hours before the alert went out and 222 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: 794 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1445 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 110110
TORDSM
IAC125-110140-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
810 PM CDT THU MAY 10 2001

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  MARION COUNTY IN SOUTH CENTRAL IOWA

* UNTIL 840 PM CDT

* AT 808 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 4 MILES SOUTHWEST OF PLEASANTVILLE...OR ABOUT 23 MILES
  SOUTHEAST OF DES MOINES...MOVING EAST AT 45 MPH.

* THE TORNADO WILL BE...
  NEAR KNOXVILLE AROUND 820 PM

IF NO BASEMENT IS AVAILABLE...GO TO THE LOWEST FLOOR OF THE BUILDING
OR INTO AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET.

LAT...LON 4151 9331 4119 9331 4117 9289 4150 9288

JUNGBLUTH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:08 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk	32 min
May 10, 7:20 PM CDT	Severe Thunderstorm Warning	DMX	Poweshiek	40 min
May 10, 7:29 PM CDT	Severe Thunderstorm Warning	DMX	Madison, Warren	41 min
May 10, 7:33 PM CDT	Severe Thunderstorm Warning	DMX	Jasper	42 min
May 10, 7:59 PM CDT	Severe Thunderstorm Warning	DMX	Poweshiek	41 min
May 10, 8:01 PM CDT	Severe Thunderstorm Warning	DMX	Madison, Warren	39 min
May 10, 8:23 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas	42 min
May 10, 8:26 PM CDT	Severe Thunderstorm Warning	DMX	Taylor	19 min
May 10, 8:35 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska	40 min
May 10, 8:42 PM CDT	Severe Thunderstorm Warning	DMX	Warren	18 min
May 10, 9:06 PM CDT	Severe Thunderstorm Warning	DMX	Clarke	19 min
May 10, 9:10 PM CDT	Severe Thunderstorm Warning	DMX	Wapello	40 min
May 10, 9:16 PM CDT	Severe Thunderstorm Warning	DMX	Lucas	39 min

Nearby

Tornado Warnings in Iowa, 2001 Every tornado warning in 2001 Tornadoes 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; the sounding from the Mesonet's radiosonde archive.