Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 39, NWS Quad Cities, IA

July 13, 2004Bureau County, Illinois

NWS Quad Cities, IA issued this tornado warning at Jul 13, 2004, 12:24 PM CDT for Bureau County, Illinois. It was in force for 66 min. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 13, 2004, 12:24 PM CDT (17:24 UTC)
Expired: Jul 13, 2004, 1:30 PM CDT
In force: 66 min
Issued by: NWS Quad Cities, IA
Area: Counties, with a storm outline in the text

County Bureau County, IL

The radar

The Chicago radar (KLOT), 100 km from the middle of the area, began a volume at 17:27 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.

What was reported inside it

Time	Report	Where	Remark
Jul 13, 12:25 PM CDT	HAIL 1	Amboy, IL	DIME TO QUARTER SIZE HAIL FROM AMBOY TO SUBLETTE
Jul 13, 12:35 PM CDT	TSTM WND DMG	5 Sw Amboy, IL	ROOF OFF ADDITION ONTO BARN AND ROWS OF CORN TAKEN OUT AT BRYER KNOLL AND ROCKY FORD.
Jul 13, 12:43 PM CDT	TORNADO	3 W La Moille, IL	BRIEF TOUCHDOWN.
Jul 13, 12:50 PM CDT	TSTM WND DMG	Van Orin, IL	TELEPHONE POLES AND TREES DOWN NEAR VAN ORIN.
Jul 13, 12:50 PM CDT	HAIL 2	1 N Arlington, IL
Jul 13, 1:15 PM CDT	TSTM WND DMG	S Peru, IL	TREES DOWN.
Jul 13, 1:40 PM CDT	HAIL 1	3 W Van Orin, IL	PENNY TO QUARTER SIZE HAIL WAS REPORTED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 13, 10:55 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 5.4 hours before the alert went out and 102 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: 415 J/kg
Mixed-layer CIN: -335 J/kg
Mixed-layer LCL: 2160 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDVN 131724
TORDVN
ILC011-131830-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1223 PM CDT TUE JUL 13 2004

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

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

* UNTIL 130 PM CDT

* AT 1221 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM LIKELY TO PRODUCE A TORNADO 10 MILES NORTHWEST
  OF LA MOILLE...OR ABOUT 14 MILES SOUTH OF DIXON...MOVING SOUTHEAST
  AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  LA MOILLE BY 1240 PM CDT
  LADD BY 100 PM CDT
  DALZELL BY 105 PM CDT

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

THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL THE SIZE OF 
QUARTERS AND DAMAGING WINDS OVER 60 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CDT TUESDAY AFTERNOON
FOR NORTHEASTERN IOWA AND NORTHWESTERN ILLINOIS.

LAT...LON 4177 8934 4168 8954 4135 8928 4132 8910
      4144 8909

$$

ERVIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 11:02 AM CDT	Severe Thunderstorm Warning	DVN	Carroll	58 min
Jul 13, 1:39 PM CDT	Severe Thunderstorm Warning	DVN	Bureau	66 min

Nearby

Tornado Warnings in Illinois, 2004 Every tornado warning in 2004 Tornadoes in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.