Alert archive / Illinois / Tornado Warnings in 2003

Tornado Warning 14, NWS Quad Cities, IA

April 30, 2003Bureau County, Illinois

NWS Quad Cities, IA issued this tornado warning at Apr 30, 2003, 9:48 PM CDT for Bureau County, Illinois. It was in force for 57 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: Apr 30, 2003, 9:48 PM CDT (02:48 UTC)
Expired: Apr 30, 2003, 10:45 PM CDT
In force: 57 min
Issued by: NWS Quad Cities, IA
Area: Counties, with a storm outline in the text

County Bureau County, IL

The radar

The Quad Cities radar (KDVN), 104 km from the middle of the area, began a volume at 02:48 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
Apr 30, 5:50 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 2.8 hours before the alert went out and 97 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: 1022 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 457 m²/s²
0-3 km storm-relative helicity: 611 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 12.6

Open this sounding in Storm Lab

The text

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

420 
WFUS53 KDVN 010248
TORDVN
ILC011-010345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
947 PM CDT WED APR 30 2003

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  BUREAU COUNTY IN NORTH CENTRAL ILLINOIS

* UNTIL 1045 PM CDT

* AT 943 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO 3 MILES WEST OF JOHNSON
  SAUK TRAIL S. P....OR 4 MILES SOUTHEAST OF PRINCETON...MOVING
  NORTHEAST AT 25 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   COAL HOLLOW BY 950 PM CDT.
   DEPUE BY 955 PM CDT.
   HOLLOWAYVILLE BY 1000 PM CDT.
   LADD BY 1005 PM CDT.

IN ADDITION TO THIS POSSIBLY TORNADIC STORM...A LINE OF SEVERE 
THUNDERSTORMS IS MOVING THROUGH THE WESTERN PART OF THE COUNTRY... 
PRODUCING WINDS IN EXCESS OF 60 MPH IN SOME LOCATIONS.

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.

LAT...LON 4140 8954 4128 8939 4136 8919 4158 8918

$$

WOLF

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:20 PM CDT	Tornado Warning	DVN	Henry	55 min
Apr 30, 8:00 PM CDT	Flash Flood Warning	DVN	Mercer	5 hr
Apr 30, 8:22 PM CDT	Tornado Warning	DVN	Henry	38 min
Apr 30, 8:25 PM CDT	Severe Thunderstorm Warning	DVN	Rock Island	50 min
Apr 30, 8:36 PM CDT	Severe Thunderstorm Warning	DVN	Mercer	39 min
Apr 30, 8:44 PM CDT	Tornado Warning	DVN	Bureau	61 min
Apr 30, 8:55 PM CDT	Tornado Warning	DVN	Bureau	50 min
Apr 30, 9:02 PM CDT	Severe Thunderstorm Warning	DVN	Henry	58 min
Apr 30, 9:24 PM CDT	Flash Flood Warning	DVN	Henry	5 hr
Apr 30, 9:37 PM CDT	Tornado Warning	DVN	Putnam	38 min
Apr 30, 9:42 PM CDT	Severe Thunderstorm Warning	DVN	Henderson	48 min
Apr 30, 10:02 PM CDT	Severe Thunderstorm Warning	DVN	Warren	43 min
Apr 30, 10:15 PM CDT	Tornado Warning	DVN	Putnam	45 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.