Alert archive / Illinois / Tornado Warnings in 2007

Tornado Warning 29, NWS Lincoln, IL

October 18, 2007Lawrence County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 18, 2007, 7:41 PM CDT for Lawrence County, Illinois. It was in force for 19 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: Oct 18, 2007, 7:41 PM CDT (00:41 UTC)
Expired: Oct 18, 2007, 8:00 PM CDT
In force: 19 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon

County Lawrence County, IL

The radar

The Evansville,IN radar (KVWX), 59 km from the middle of the area, began a volume at 00:43 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
Oct 18, 3:23 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 177 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: 38 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 2442 m above ground
0-6 km bulk shear: 86 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 113 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 KILX 190040
TORILX
ILC101-190100-
/O.NEW.KILX.TO.W.0029.071019T0041Z-071019T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
741 PM CDT THU OCT 18 2007

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN LAWRENCE COUNTY IN SOUTHEAST ILLINOIS...

* UNTIL 800 PM CDT.

* AT 741 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  LAWRENCEVILLE...MOVING NORTHEAST AT 60 MPH.

WHEN A TORNADO WARNING IS ISSUED...IT MEANS THAT STRONG ROTATION HAS
BEEN DETECTED IN THE STORM...AND ATMOSPHERIC CONDITIONS SUPPORT THAT
ROTATION REACHING THE GROUND. A TORNADO MAY ALREADY BE ON THE
GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF
THIS DANGEROUS STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE
BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER
UNDER A HIGHWAY OVERPASS.

REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL EMERGENCY
MANAGER...OR THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE
NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEASTERN ILLINOIS.

LAT...LON 3871 8751 3868 8768 3877 8777 3887 8757
      3887 8754 3882 8752 3880 8750 3872 8750
TIME...MOT...LOC 0041Z 234DEG 52KT 3877 8761

$$

HUETTL

1 follow-up statement

000 
WWUS53 KILX 190055
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
754 PM CDT THU OCT 18 2007

ILC101-190104-
/O.EXP.KILX.TO.W.0029.000000T0000Z-071019T0100Z/
LAWRENCE-
754 PM CDT THU OCT 18 2007

...THE TORNADO WARNING FOR NORTHEASTERN LAWRENCE COUNTY EXPIRES AT
800 PM CDT...

AT 754 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED THAT
THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD MOVED OUT OF THE
AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH CONTINUES FOR LAWRENCE COUNTY UNTIL 11 PM.

LAT...LON 3871 8751 3868 8768 3877 8777 3887 8757
      3887 8754 3882 8752 3880 8750 3872 8750
TIME...MOT...LOC 0054Z 234DEG 52KT 3887 8741

$$

HUETTL

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 18, 7:09 PM CDT	Tornado Warning	ILX	Lawrence, Richland	36 min
Oct 18, 8:06 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	29 min
Oct 18, 8:06 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham	39 min

Nearby

Tornado Warnings in Illinois, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.