Alert archive / Illinois / Tornado Warnings in 2003

Tornado Warning 23, NWS Quad Cities, IA

May 10, 2003Hancock County, Illinois

NWS Quad Cities, IA issued this tornado warning at May 10, 2003, 6:59 PM CDT for Hancock County, Illinois. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 10, 2003, 6:59 PM CDT (23:59 UTC)
Expired: May 10, 2003, 7:30 PM CDT
In force: 31 min
Issued by: NWS Quad Cities, IA
Area: Counties, with a storm outline in the text

County Hancock County, IL

The radar

The Quad Cities radar (KDVN), 154 km from the middle of the area, began a volume at 00:04 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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, 5:40 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 12.0 hours before the alert went out and 158 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 225 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

297 
WFUS53 KDVN 102359
TORDVN
ILC067-110030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
658 PM CDT SAT MAY 10 2003

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  HANCOCK COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 730 PM CDT

* AT 652 PM CDT...DOPPLER RADAR AND SPOTTERS INDICATED A TORNADO 5
  MILES WEST OF STILLWELL...OR 14 MILES SOUTHEAST OF KEOKUK...MOVING
  NORTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   WEST POINT BY 700 PM CDT.
   BASCO BY 710 PM CDT.
   DENVER BY 715 PM CDT.
   BENTLEY BY 720 PM CDT.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR EASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI. A
TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM CDT SATURDAY
EVENING FOR WEST CENTRAL ILLINOIS AND NORTHEAST MISSOURI.

AT 658 PM CDT...PUBLIC REPORTS A TORNADO WITH DEBRIS AROUND THE 
TORNADO NEAR TIOGA.

THIS EXTENDS THE TORNADO WARNING ISSUED EARLIER FOR HANCOCK COUNTY. 

LAT...LON 4025 9142 4012 9125 4034 9095 4062 9118

$$

NICHOLS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 11:05 PM CDT	Severe Thunderstorm Warning	DVN	Hancock	40 min
May 9, 11:20 PM CDT	Severe Thunderstorm Warning	DVN	Bureau	25 min
May 10, 6:37 PM CDT	Tornado Warning	DVN	Hancock	23 min

Nearby

Tornado Warnings in Illinois, 2003 Every tornado warning in 2003 Tornadoes in 2003

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; radar from the NEXRAD Level II archive.