Alert archive / Illinois / Tornado Warnings in 2008

Tornado Warning 100, NWS St. Louis, MO

December 27, 2008Clinton County, Marion County, Washington County, Illinois

NWS St. Louis, MO issued this tornado warning at Dec 27, 2008, 4:34 PM CST for Clinton County, Marion County, Washington County, Illinois. It was in force for 41 min. 2 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: Dec 27, 2008, 4:34 PM CST (22:34 UTC)
Expired: Dec 27, 2008, 5:15 PM CST
In force: 41 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Clinton County, IL, Marion County, IL, Washington County, IL

What was reported inside it

Time	Report	Where	Remark
Dec 27, 4:54 PM CST	TSTM WND GST 0	Centralia, IL	52 MPH AT CENTRALIA AIRPORT.
Dec 27, 5:08 PM CST	TSTM WND GST 0	Salem, IL	AT THE SALEM AIRPORT...54 MPH.

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
Dec 27, 12:45 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.6 hours before the alert went out and 185 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: 87 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 538 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 451 m²/s²
0-3 km storm-relative helicity: 455 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 272234
TORLSX
ILC027-121-189-272315-
/O.NEW.KLSX.TO.W.0100.081227T2234Z-081227T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
434 PM CST SAT DEC 27 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS
  MARION COUNTY IN SOUTH CENTRAL ILLINOIS
  NORTHEASTERN WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS

* UNTIL 515 PM CST

* AT 431 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 14 MILES WEST OF
  IRVINGTON...OR ABOUT NEAR NASHVILLE...MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  IRVINGTON...
  CENTRALIA...
  WAMAC...
  CENTRAL CITY...
  SHATTUC...
  ODIN...
  SANDOVAL...
  SALEM...
  OMEGA...
  KINMUNDY...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3859 8872 3847 8899 3847 8914 3838 8915
      3834 8924 3847 8944 3882 8884
TIME...MOT...LOC 2234Z 238DEG 49KT 3841 8936

$$

BROWNING

1 follow-up statement

000 
WWUS53 KLSX 272312
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
512 PM CST SAT DEC 27 2008

ILC027-121-189-272322-
/O.EXP.KLSX.TO.W.0100.000000T0000Z-081227T2315Z/
WASHINGTON IL-CLINTON IL-MARION IL-
512 PM CST SAT DEC 27 2008

...THE TORNADO WARNING FOR MARION...EASTERN CLINTON AND NORTHEASTERN
WASHINGTON COUNTIES EXPIRES AT 515 PM CST...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED IS MOVING OUT OF
THE WARNED AREA.

LAT...LON 3859 8872 3847 8899 3847 8914 3838 8915
      3834 8924 3847 8944 3882 8884
TIME...MOT...LOC 2312Z 238DEG 49KT 3868 8880

$$

BROWNING

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 27, 1:23 AM CST	Tornado Warning	LSX	Adams	47 min
Dec 27, 2:13 AM CST	Tornado Warning	LSX	Adams, Pike	47 min
Dec 27, 2:37 AM CST	Flash Flood Warning	LSX	Adams	6 hr
Dec 27, 4:05 AM CST	Wind Advisory	LSX	Bond, Clinton, Fayette, Jersey, Macoupin, Madison and 6 more	12 hr
Dec 27, 10:32 AM CST	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	43 min
Dec 27, 10:46 AM CST	Tornado Warning	LSX	Calhoun, Greene, Pike	44 min
Dec 27, 10:58 AM CST	Tornado Warning	LSX	Calhoun	47 min
Dec 27, 11:02 AM CST	Severe Thunderstorm Warning	LSX	Calhoun	43 min
Dec 27, 11:34 AM CST	Tornado Warning	LSX	Greene, Jersey, Macoupin	41 min
Dec 27, 12:30 PM CST	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	30 min
Dec 27, 12:41 PM CST	Flash Flood Warning	LSX	Calhoun, Jersey, Madison, Monroe, Saint Clair	6 hr
Dec 27, 1:06 PM CST	Severe Thunderstorm Warning	LSX	Calhoun, Jersey, Madison, Monroe, Saint Clair	54 min
Dec 27, 1:37 PM CST	Severe Thunderstorm Warning	LSX	Bond, Greene, Jersey, Macoupin, Madison, Monroe and 2 more	53 min
Dec 27, 1:53 PM CST	River Flood Warning	LSX	Pike	48 hr
Dec 27, 4:09 PM CST	Tornado Warning	LSX	Randolph, Saint Clair, Washington	51 min
Dec 27, 4:14 PM CST	Areal Flood Advisory	LSX	Bond, Clinton, Fayette, Macoupin, Madison, Monroe and 4 more	4 hr

Nearby

Tornado Warnings in Illinois, 2008 Every tornado warning in 2008 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.