Alert archive / Iowa / Tornado Warnings in 2002

Tornado Warning 13, NWS Quad Cities, IA

June 12, 2002Washington County, Iowa

NWS Quad Cities, IA issued this tornado warning at Jun 12, 2002, 7:08 PM CDT for Washington County, Iowa. It was in force for 22 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 12, 2002, 7:08 PM CDT (00:08 UTC)
Expired
Jun 12, 2002, 7:30 PM CDT
In force
22 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

County Washington County, IA

What was reported inside it

TimeReportWhereRemark
Jun 12, 7:13 PM CDTTornado F0Washington, IAA brief tornado touched down east of Washington. No injuries or damage was reported.

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 nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.1 hours before the alert went out and 106 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 00:00Z on 2002-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1544 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 00:00Z on 2002-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939587897Sfc1 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
1544 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
921 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDVN 130008
TORMLI
IAC183-130030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
705 PM CDT WED JUN 12 2002

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  WASHINGTON COUNTY IN SOUTHEAST IOWA

* UNTIL 730 PM CDT

* AT 702 PM CDT...DOPPLER RADAR AND SPOTTERS INDICATED A 
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER WASHINGTON...MOVING 
EAST AT 18 MPH.

* THE STORM IS EXPECTED TO BE NEAR...
   AINSWORTH BY 710 PM CDT.
   HASKINS BY 715 PM CDT.

THIS STOMR HAS A HISTORY OF PRODUCING FUNNEL CLOUDS AND SHORT LIVED 
TORNADOS.  TAKE SHELTER. 

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT OR ON THE
LOWEST FLOOR OF A BUILDING IN AN INTERIOR HALLWAY OR ROOM.

REPORT ANY SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR
RELAY TO THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES.


33

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 8:17 PM CDTFlash Flood WarningDVNLee, Van Buren8 hr
Jun 12, 8:22 PM CDTSevere Thunderstorm WarningDVNLee28 min
Jun 12, 10:47 PM CDTFlash Flood WarningDVNDes Moines5 hr
Jun 13, 3:50 AM CDTFlash Flood WarningDVNDes Moines, Lee, Van Buren4 hr

Nearby

Tornado Warnings in Iowa, 2002Every tornado warning in 2002Tornadoes in 2002

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.