Alert archive / Illinois / Tornado Warnings in 2008

Tornado Warning 83, NWS St. Louis, MO

August 5, 2008Fayette County, Illinois

NWS St. Louis, MO issued this tornado warning at Aug 5, 2008, 7:43 PM CDT for Fayette County, Illinois. It was in force for 17 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
Aug 5, 2008, 7:43 PM CDT (00:43 UTC)
Expired
Aug 5, 2008, 8:00 PM CDT
In force
17 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon

County Fayette County, IL

The radar

The Evansville,IN radar (KVWX), 124 km from the middle of the area, began a volume at 00:44 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.

IssuedProductOfficeLasted
Aug 5, 2:59 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 134 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, Lincoln, IL at 00:00Z on 2008-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1853 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, Lincoln, IL at 00:00Z on 2008-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.193958Sfc1 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
1853 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
949 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.5

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 060043
TORLSX
ILC051-060100-
/O.NEW.KLSX.TO.W.0083.080806T0043Z-080806T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
743 PM CDT TUE AUG 5 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS

* UNTIL 800 PM CDT

* AT 740 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR BROWNSTOWN...OR ABOUT
  10 MILES EAST OF VANDALIA...MOVING EAST AT 53 MPH.

* LOCATIONS IMPACTED INCLUDE...
 ST. ELMO AND BROWNSTOWN

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

LAT...LON 3891 8899 3909 8898 3909 8880 3892 8881
      3892 8878 3892 8870 3889 8870
TIME...MOT...LOC 0044Z 274DEG 46KT 3899 8886

$$

TILLY
1 follow-up statement
000 
WWUS53 KLSX 060058
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
758 PM CDT TUE AUG 5 2008

ILC051-060108-
/O.EXP.KLSX.TO.W.0083.000000T0000Z-080806T0100Z/
FAYETTE IL-
758 PM CDT TUE AUG 5 2008

...THE TORNADO WARNING FOR EASTERN FAYETTE COUNTY WILL BE ALLOWED TO 
EXPIRE AT 800 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM. 

LAT...LON 3891 8899 3909 8898 3909 8880 3892 8881
      3892 8878 3892 8870 3889 8870
TIME...MOT...LOC 0058Z 274DEG 46KT 3898 8863

$$

TILLY

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 5, 7:06 PM CDTTornado WarningLSXBond, Fayette, Montgomery39 min
Aug 5, 7:09 PM CDTSevere Thunderstorm WarningLSXFayette, Montgomery51 min
Aug 5, 7:33 PM CDTSevere Thunderstorm WarningLSXFayette, Marion42 min
Aug 5, 7:47 PM CDTSevere Thunderstorm WarningLSXMonroe, Saint Clair, Washington13 min
Aug 5, 7:56 PM CDTSevere Thunderstorm WarningLSXBond, Clinton, Fayette, Madison, Marion, Monroe and 3 more64 min
Aug 5, 8:18 PM CDTSevere Thunderstorm WarningLSXMonroe42 min
Aug 5, 9:42 PM CDTFlash Flood WarningLSXJersey, Macoupin4 hr

Nearby

Tornado Warnings in Illinois, 2008Every tornado warning in 2008Tornadoes in 2008

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.