Alert archive / Illinois / Tornado Warnings in 2010

Tornado Warning 93, NWS St. Louis, MO

December 31, 20105 counties in Illinois

NWS St. Louis, MO issued this tornado warning at Dec 31, 2010, 1:40 PM CST for 5 counties in Illinois. It was in force for 50 min. 1 report 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 31, 2010, 1:40 PM CST (19:40 UTC)
Expired: Dec 31, 2010, 2:30 PM CST
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Bond County, IL, Clinton County, IL, Fayette County, IL, Marion County, IL, Washington County, IL

The radar

The Evansville,IN radar (KVWX), 122 km from the middle of the area, began a volume at 19:44 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.

What was reported inside it

Time	Report	Where	Remark
Dec 31, 2:40 PM CST	HAIL 0.25	2 E Huey, IL

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 31, 7:29 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.7 hours before the alert went out and 159 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 450 m²/s²
0-3 km storm-relative helicity: 427 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.

703 
WFUS53 KLSX 311940
TORLSX
ILC005-027-051-121-189-312030-
/O.NEW.KLSX.TO.W.0093.101231T1940Z-101231T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
140 PM CST FRI DEC 31 2010

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 230 PM CST

* AT 136 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE SQUALL LINE CAPABLE OF PRODUCING BRIEF RAIN-WRAPPED
  TORNADOES IN ADDITION TO WIDESPREAD STRAIGHT LINE WIND DAMAGE.
  THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  BEECHER CITY TO 5 MILES SOUTH OF ST. ELMO TO OKAWVILLE...AND MOVING
  NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CENTRALIA...SALEM...FAIRMAN...SHATTUC...IRVINGTON...WAMAC...
  SANDOVAL...CENTRAL CITY...FARINA...KINMUNDY...ODIN...OMEGA...
  STEPHEN FORBES STATE PARK...POSEY...FERRIN...ST. PETER...
  HOYLETON...HOFFMAN...JUNCTION CITY AND LA CLEDE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 3870 8871 3847 8909 3847 8914 3843 8914
      3835 8928 3885 8950 3922 8897 3921 8880
      3891 8881 3892 8870
TIME...MOT...LOC 1940Z 241DEG 49KT 3923 8878 3898 8876
          3842 8953

$$

CVKING

1 follow-up statement

349 
WWUS53 KLSX 311948
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
148 PM CST FRI DEC 31 2010

ILC005-027-051-121-189-312030-
/O.CON.KLSX.TO.W.0093.000000T0000Z-101231T2030Z/
WASHINGTON IL-CLINTON IL-MARION IL-BOND IL-FAYETTE IL-
148 PM CST FRI DEC 31 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR FAYETTE...SOUTHEASTERN
BOND...MARION...EASTERN CLINTON AND NORTHEASTERN WASHINGTON COUNTIES
UNTIL 230 PM CST...

AT 146 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THESE DANGEROUS STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM STEWARDSON TO 6 MILES SOUTHEAST
OF ALTAMONT TO 6 MILES EAST OF OKAWVILLE...MOVING NORTHEAST AT 55
MPH.

LOCATIONS IMPACTED INCLUDE...
  CENTRALIA...SALEM...FAIRMAN...SHATTUC...IRVINGTON...WAMAC...
  SANDOVAL...CENTRAL CITY...FARINA...KINMUNDY...ODIN...OMEGA...
  STEPHEN FORBES STATE PARK...HOYLETON...HOFFMAN...JUNCTION CITY...LA
  CLEDE...ALMA...SELMAVILLE AND TONTI.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 3870 8871 3847 8909 3847 8914 3843 8914
      3835 8928 3875 8944 3921 8880 3891 8881
      3892 8870
TIME...MOT...LOC 1948Z 241DEG 49KT 3927 8865 3902 8863
          3847 8941

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 31, 9:43 AM CST	Tornado Warning	LSX	Adams, Brown	32 min
Dec 31, 10:22 AM CST	Tornado Warning	LSX	Pike	38 min
Dec 31, 11:00 AM CST	Tornado Warning	LSX	Calhoun, Pike	60 min
Dec 31, 11:15 AM CST	Tornado Warning	LSX	Calhoun, Pike	45 min
Dec 31, 11:22 AM CST	Tornado Warning	LSX	Calhoun, Jersey, Madison, Monroe, Saint Clair	53 min
Dec 31, 11:54 AM CST	Tornado Warning	LSX	Calhoun, Greene, Pike	51 min
Dec 31, 11:59 AM CST	Tornado Warning	LSX	Bond, Clinton, Jersey, Macoupin, Madison, Monroe and 2 more	61 min
Dec 31, 12:38 PM CST	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion, Montgomery	67 min
Dec 31, 12:57 PM CST	Tornado Warning	LSX	Bond, Clinton, Madison, Monroe, Randolph, Saint Clair and 1 more	48 min
Dec 31, 1:11 PM CST	Tornado Warning	LSX	Randolph	49 min
Dec 31, 1:44 PM CST	Tornado Warning	LSX	Clinton, Monroe, Randolph, Saint Clair, Washington	61 min
Dec 31, 2:00 PM CST	Tornado Warning	LSX	Randolph	60 min
Dec 31, 2:22 PM CST	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion, Washington	53 min

Nearby

Tornado Warnings in Illinois, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.