Alert archive / Iowa / Tornado Warnings in 2000

Tornado Warning 18, NWS Quad Cities, IA

November 1, 2000Benton County, Buchanan County, Iowa

NWS Quad Cities, IA issued this tornado warning at Nov 1, 2000, 3:59 PM CST for Benton County, Buchanan County, Iowa. It was in force for 71 min. 2 reports 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, 3:59 PM CST (21:59 UTC)
Expired
Nov 1, 2000, 5:10 PM CST
In force
71 min
Issued by
NWS Quad Cities, IA
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Benton County, IA, Buchanan County, IA

What was reported inside it

TimeReportWhereRemark
Nov 1, 5:09 PM CSTThunderstorm Wind 57 ECenter Pt, IASevere winds toppled several trees.
Nov 1, 5:15 PM CSTThunderstorm Wind 52 EUrbana, IASeveral large tree limbs were blown down.

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.

IssuedProductOfficeLasted
Nov 1, 3:00 PM CSTTornado WatchSPC5 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.0 hours before the alert went out and 146 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-pSkew-T log-p diagram, Davenport, at 12:00Z on 2000-11-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 305 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2000-11-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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 KDVN 012200
TORMLI

IAC011-019-012310-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
359 PM CST WED NOV 1 2000

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN BENTON COUNTY IN EAST CENTRAL IOWA
  BUCHANAN COUNTY IN NORTHEAST IOWA

* UNTIL 510 PM CST

* AT 355 PM CST...DOPPLER RADAR AND SPOTTERS INDICATED A 
DEVELOPING   TORNADO JUST NORTH OF VINTON...MOVING NORTHEAST 
AT 40 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   BRANDON BY 405 PM CST.
   INDEPENDENCE AIRPORT BY 415 PM CST.
   INDEPENDENCE BY 420 PM CST.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. 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.

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT 
WAS ALREADY IN EFFECT FOR BENTON COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING
FOR EASTERN IOWA.

LAT...LON 4210 9229 4210 9184 4248 9159 4266 9207

HLADIK

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 1, 3:12 PM CSTSevere Thunderstorm WarningDVNBenton63 min
Nov 1, 5:01 PM CSTSevere Thunderstorm WarningDVNBenton, Linn44 min
Nov 1, 5:17 PM CSTSevere Thunderstorm WarningDVNBuchanan, Delaware63 min

Nearby

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