Alert archive / Illinois / Tornado Warnings in 2010

Tornado Warning 29, NWS Lincoln, IL

July 21, 2010Vermilion County, Illinois

NWS Lincoln, IL issued this tornado warning at Jul 21, 2010, 2:03 PM CDT for Vermilion County, Illinois. It was in force for 28 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: Jul 21, 2010, 2:03 PM CDT (19:03 UTC)
Expired: Jul 21, 2010, 2:31 PM CDT
In force: 28 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon

County Vermilion County, IL

The radar

The Indianapolis radar (KIND), 121 km from the middle of the area, began a volume at 19:05 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.1 hours before the alert went out and 82 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: 1868 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 559 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

321 
WFUS53 KILX 211903
TORILX
ILC183-212000-
/O.NEW.KILX.TO.W.0029.100721T1903Z-100721T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
203 PM CDT WED JUL 21 2010

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN VERMILION COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 300 PM CDT.

* AT 200 PM CDT...TRAINED WEATHER SPOTTERS REPORTED CONTINUOUS       
  FUNNEL CLOUDS JUST NORTH OF INDIANOLA...OR 15 MILES SOUTHWEST OF   
  DANVILLE. THE STORM HAS A HISTORY OF PRODUCING A TORNADO. DOPPLER  
  RADAR SHOWED THIS TORNADIC MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RIDGE FARM AND GEORGETOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 3989 8753 3988 8794 4004 8795 4003 8753
      3998 8752
TIME...MOT...LOC 1902Z 272DEG 10KT 3994 8774

$$

SHIMON

2 follow-up statements

514 
WWUS53 KILX 211908
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
208 PM CDT WED JUL 21 2010

ILC183-212000-
/O.CON.KILX.TO.W.0029.000000T0000Z-100721T2000Z/
VERMILION IL-
208 PM CDT WED JUL 21 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN VERMILION COUNTY
UNTIL 300 PM CDT...

AT 204 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD.  A
TORNADO MAY DEVELOP AT ANY TIME. THIS DANGEROUS STORM WAS LOCATED 5
MILES NORTHEAST OF SIDELL...OR 15 MILES SOUTHWEST OF DANVILLE...
MOVING EAST AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
  RIDGE FARM AND GEORGETOWN.

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 3989 8753 3988 8794 4004 8795 4003 8753
      3998 8752
TIME...MOT...LOC 1908Z 272DEG 10KT 3994 8772

$$

SHIMON

796 
WWUS53 KILX 211931
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
231 PM CDT WED JUL 21 2010

ILC183-211940-
/O.CAN.KILX.TO.W.0029.000000T0000Z-100721T2000Z/
VERMILION IL-
231 PM CDT WED JUL 21 2010

...THE TORNADO WARNING FOR SOUTHERN VERMILION COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 3989 8753 3988 8794 4004 8795 4003 8753
      3998 8752
TIME...MOT...LOC 1930Z 272DEG 10KT 3994 8764

$$

SHIMON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 8:46 PM CDT	River Flood Warning	ILX	Lawrence	3 days
Jul 21, 1:52 AM CDT	Special Weather Statement	ILX	Clay, Crawford, Jasper, Lawrence, Richland	53 min
Jul 21, 1:25 PM CDT	Tornado Warning	ILX	Vermilion	35 min
Jul 21, 1:38 PM CDT	Areal Flood Advisory	ILX	DeWitt, Macon, Piatt	3 hr
Jul 21, 1:46 PM CDT	Tornado Warning	ILX	Champaign, Piatt	44 min
Jul 21, 3:08 PM CDT	Heat Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	60 hr
Jul 21, 4:30 PM CDT	Areal Flood Advisory	ILX	McLean	3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.