Alert archive / Illinois / Tornado Warnings in 2012

Tornado Warning 25, NWS Lincoln, IL

September 7, 2012Clark County, Edgar County, Illinois

NWS Lincoln, IL issued this tornado warning at Sep 7, 2012, 6:41 PM CDT for Clark County, Edgar County, Illinois. It was in force for 34 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: Sep 7, 2012, 6:41 PM CDT (23:41 UTC)
Expired: Sep 7, 2012, 7:15 PM CDT
In force: 34 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon

Counties Clark County, IL, Edgar County, IL

The radar

The Indianapolis radar (KIND), 120 km from the middle of the area, began a volume at 23:41 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
Sep 7, 3:41 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.7 hours before the alert went out and 123 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: 367 J/kg
Mixed-layer CIN: -412 J/kg
Mixed-layer LCL: 1436 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

688 
WFUS53 KILX 072341
TORILX
ILC023-045-080015-
/O.NEW.KILX.TO.W.0025.120907T2341Z-120908T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
641 PM CDT FRI SEP 7 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN CLARK COUNTY IN EAST CENTRAL ILLINOIS...
  SOUTHEASTERN EDGAR COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 715 PM CDT.

* AT 637 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR MARSHALL...AND MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DENNISON AND DARWIN.

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 141 AND 154.

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.

&&

LAT...LON 3935 8754 3933 8755 3933 8759 3931 8761
      3930 8759 3929 8761 3927 8760 3931 8780
      3957 8773 3954 8753 3935 8752
TIME...MOT...LOC 2341Z 281DEG 41KT 3938 8766

$$

BARKER

3 follow-up statements

614 
WWUS53 KILX 072358
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
658 PM CDT FRI SEP 7 2012

ILC023-045-080015-
/O.CON.KILX.TO.W.0025.000000T0000Z-120908T0015Z/
CLARK IL-EDGAR IL-
658 PM CDT FRI SEP 7 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN EDGAR AND
NORTHEASTERN CLARK COUNTIES UNTIL 715 PM CDT...

AT 654 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 7 MILES SOUTH OF DENNISON...OR 7 MILES EAST OF
MARSHALL...MOVING EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...

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 3935 8754 3933 8755 3933 8759 3931 8761
      3930 8759 3929 8761 3927 8760 3930 8772
      3955 8761 3954 8753 3935 8752
TIME...MOT...LOC 2359Z 285DEG 46KT 3935 8748

$$

BARKER

479 
WWUS53 KILX 080016
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
716 PM CDT FRI SEP 7 2012

ILC023-045-080025-
/O.EXP.KILX.TO.W.0025.000000T0000Z-120908T0015Z/
CLARK IL-EDGAR IL-
716 PM CDT FRI SEP 7 2012

...THE TORNADO WARNING FOR SOUTHEASTERN EDGAR AND NORTHEASTERN CLARK
COUNTIES HAS EXPIRED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT 
FOR MUCH OF CRAWFORD COUNTY. 

LAT...LON 3935 8754 3933 8755 3933 8759 3931 8761
      3930 8759 3929 8761 3927 8760 3930 8772
      3955 8761 3954 8753 3935 8752
TIME...MOT...LOC 2358Z 285DEG 46KT 3935 8750

$$

BARKER

722 
WWUS53 KILX 080017 CCA
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
717 PM CDT FRI SEP 7 2012

ILC023-045-080025-
/O.EXP.KILX.TO.W.0025.000000T0000Z-120908T0015Z/
CLARK IL-EDGAR IL-
717 PM CDT FRI SEP 7 2012

...THE TORNADO WARNING FOR SOUTHEASTERN EDGAR AND NORTHEASTERN CLARK
COUNTIES HAS EXPIRED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT 
FOR MUCH OF CLARK COUNTY. 

LAT...LON 3935 8754 3933 8755 3933 8759 3931 8761
      3930 8759 3929 8761 3927 8760 3930 8772
      3955 8761 3954 8753 3935 8752
TIME...MOT...LOC 2358Z 285DEG 46KT 3935 8750

$$

BARKER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 9:14 AM CDT	Special Weather Statement	ILX	Tazewell	46 min
Sep 7, 9:26 AM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, McLean, Tazewell	49 min
Sep 7, 9:48 AM CDT	Special Weather Statement	ILX	Cass	42 min
Sep 7, 11:30 AM CDT	Special Weather Statement	ILX	Champaign	60 min
Sep 7, 12:08 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	18 min
Sep 7, 1:50 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	40 min
Sep 7, 2:28 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	37 min
Sep 7, 3:00 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Peoria, Woodford	41 min
Sep 7, 3:17 PM CDT	Special Weather Statement	ILX	Clark	28 min
Sep 7, 4:40 PM CDT	Special Weather Statement	ILX	Macon, Moultrie	50 min
Sep 7, 5:16 PM CDT	Special Weather Statement	ILX	Douglas, Edgar, Moultrie	59 min
Sep 7, 5:22 PM CDT	Special Weather Statement	ILX	Shelby	53 min
Sep 7, 5:36 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Douglas, Edgar	39 min
Sep 7, 6:05 PM CDT	Tornado Warning	ILX	Clark, Coles, Edgar	40 min
Sep 7, 6:12 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas, Edgar	45 min
Sep 7, 6:29 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Cumberland, Effingham, Jasper, Richland, Shelby	61 min

Nearby

Tornado Warnings in Illinois, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.