Alert archive / Iowa / Tornado Warnings in 2000

Tornado Warning 31, NWS Des Moines, IA

November 1, 2000Poweshiek County, Iowa

NWS Des Moines, IA issued this tornado warning at Nov 1, 2000, 3:03 PM CST for Poweshiek County, Iowa. It was in force for 32 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: Nov 1, 2000, 3:03 PM CST (21:03 UTC)
Expired: Nov 1, 2000, 3:35 PM CST
In force: 32 min
Issued by: NWS Des Moines, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Poweshiek County, IA

What was reported inside it

Time	Report	Where	Remark
Nov 1, 3:10 PM CST	Thunderstorm Wind 52 E	Brooklyn, 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
Nov 1, 3:00 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.1 hours before the alert went out and 164 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: 305 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 012104
TORDSM

IAC157-012135-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
303 PM CST WED NOV 1 2000

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEAST POWESHIEK COUNTY IN CENTRAL IOWA

* UNTIL 335 PM

* AT 300 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 7 MILES EAST OF MALCOM...OR ABOUT 35 MILES NORTH OF
  OTTUMWA...MOVING NORTHEAST AT 40 MPH.

* THE TORNADO WILL BE...
  NEAR BROOKLYN AROUND 310 PM
  NEAR HARTWICK AROUND 325 PM

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE.

IF YOU ARE IN AS SCHOOL...HOSPITAL OR NURSING HOME...GO TO YOUR
PRE-DESIGNATED SHELTER AREA. STAY AWAY FROM WINDOWS AND EXTERIOR
WALLS.



LAT...LON 4162 9268 4163 9233 4174 9214 4186 9251
&

KULA
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 1, 1:39 PM CST	Severe Thunderstorm Warning	DMX	Tama	31 min
Nov 1, 2:27 PM CST	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	38 min
Nov 1, 3:08 PM CST	Severe Thunderstorm Warning	DMX	Clarke, Decatur	37 min
Nov 1, 3:19 PM CST	Tornado Warning	DMX	Tama	16 min

Nearby

Tornado Warnings in Iowa, 2000 Every tornado warning in 2000 Tornadoes in 2000

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.