Alert archive / Illinois / Tornado Warnings in 2008

Tornado Warning 99, NWS St. Louis, MO

December 27, 2008Randolph County, Saint Clair County, Washington County, Illinois

NWS St. Louis, MO issued this tornado warning at Dec 27, 2008, 4:09 PM CST for Randolph County, Saint Clair County, Washington County, Illinois. It was in force for 51 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, 4:09 PM CST (22:09 UTC)
Expired: Dec 27, 2008, 5:00 PM CST
In force: 51 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Randolph County, IL, Saint Clair County, IL, Washington County, IL

The radar

The St Louis radar (KLSX), 109 km from the middle of the area, began a volume at 21:56 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
Dec 27, 4:18 PM CST	TSTM WND DMG	1 W Lively Grove, IL	TREE LIMBS DOWN.
Dec 27, 4:40 PM CST	TSTM WND DMG	Nashville, IL	TREE LIMBS REPORTED DOWN...RELAYED VIA THE ADDIEVILLE FIRE DEPT.

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, 10.2 hours before the alert went out and 221 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 272209
TORLSX
ILC157-163-189-272300-
/O.NEW.KLSX.TO.W.0099.081227T2209Z-081227T2300Z/

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

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS
  NORTHEASTERN RANDOLPH COUNTY IN SOUTHWEST ILLINOIS
  SOUTHEASTERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 500 PM CST

* AT 405 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 4 MILES EAST OF BALDWIN...
  OR ABOUT 4 MILES NORTHWEST OF SPARTA...MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LIVELY GROVE...
  OKAWVILLE...
  NASHVILLE...

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.

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 3834 8925 3821 8952 3821 8959 3817 8959
      3808 8978 3822 8992 3848 8952 3846 8948
      3848 8946
TIME...MOT...LOC 2209Z 236DEG 47KT 3822 8972

$$

BROWNING

1 follow-up statement

000 
WWUS53 KLSX 272220
SVSLSX

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

ILC157-163-189-272300-
/O.CON.KLSX.TO.W.0099.000000T0000Z-081227T2300Z/
RANDOLPH IL-WASHINGTON IL-ST. CLAIR IL-
419 PM CST SAT DEC 27 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CST FOR
SOUTHEASTERN ST. CLAIR...WASHINGTON AND NORTHEASTERN RANDOLPH
COUNTIES...

AT 418 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A POSSIBLE TORNADO LOCATED NEAR LIVELY GROVE...OR 11 MILES 
NORTHEAST OF SPARTA...MOVING NORTHEAST AT 55 MPH.

LOCATIONS NEAR THE PATH OF THE POSSIBLE TORNADO 
INCLUDE...CORDES...OKAWVILLE...ADDIEVILLE...NASHVILLE...FROGTOWN...CO
VINGTON AND BEAUCOUP.

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 3834 8925 3821 8952 3821 8959 3817 8959
      3808 8978 3822 8992 3848 8952 3846 8948
      3848 8946
TIME...MOT...LOC 2219Z 236DEG 47KT 3829 8958

$$

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, 4:14 PM CST	Areal Flood Advisory	LSX	Bond, Clinton, Fayette, Macoupin, Madison, Monroe and 4 more	4 hr
Dec 27, 4:34 PM CST	Tornado Warning	LSX	Clinton, Marion, Washington	41 min

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; radar from the NEXRAD Level II archive.