Alert archive / Illinois / Tornado Warnings in 2011

Tornado Warning 25, NWS Lincoln, IL

May 7, 2011Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this tornado warning at May 7, 2011, 4:06 PM CDT for Champaign County, Vermilion County, Illinois. It was in force for 39 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
May 7, 2011, 4:06 PM CDT (21:06 UTC)
Expired
May 7, 2011, 4:45 PM CDT
In force
39 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon

Counties Champaign County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 128 km from the middle of the area, began a volume at 21:08 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.

IssuedProductOfficeLasted
May 7, 2:59 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.1 hours before the alert went out and 67 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2011-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2011-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1168 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
351 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

748 
WFUS53 KILX 072106
TORILX
ILC019-183-072145-
/O.NEW.KILX.TO.W.0025.110507T2106Z-110507T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
406 PM CDT SAT MAY 7 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS...
  NORTHERN VERMILION COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 445 PM CDT.

* AT 403 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR PAXTON...AND MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DANVILLE...RANKIN...POTOMAC...HOOPESTON...ROSSVILLE...LUDLOW...
  ARMSTRONG...MIDDLE FORK WILDLIFE AREA...COLLISON...HENNING...
  ALVIN...BISMARCK AND VERMILION COUNTY AIRPORT.

THIS INCLUDES INTERSTATE 57 BETWEEN MILE MARKERS 255 AND 257.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 216 AND 219.

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 4006 8753 4040 8819 4041 8816 4040 8796
      4041 8794 4048 8794 4049 8791 4049 8752
TIME...MOT...LOC 2106Z 301DEG 29KT 4045 8810

$$

CHURCHILL
2 follow-up statements
468 
WWUS53 KILX 072123
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
423 PM CDT SAT MAY 7 2011

ILC019-183-072145-
/O.CON.KILX.TO.W.0025.000000T0000Z-110507T2145Z/
VERMILION IL-CHAMPAIGN IL-
423 PM CDT SAT MAY 7 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN CHAMPAIGN AND
NORTHERN VERMILION COUNTIES UNTIL 445 PM CDT...

AT 417 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED 3 MILES SOUTHEAST OF PAXTON...MOVING SOUTHEAST AT 
25 MPH. THIS DANGEROUS STORM IS NOW ENTERING NORTHEASTERN CHAMPAIGN 
COUNTY.

LOCATIONS IMPACTED INCLUDE...
  DANVILLE...POTOMAC...ARMSTRONG...MIDDLE FORK WILDLIFE AREA...
  COLLISON...HENNING...ALVIN...BISMARCK AND VERMILION COUNTY AIRPORT.

THIS INCLUDES INTERSTATE 57 BETWEEN MILE MARKERS 256 AND 257.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 216 AND 219.

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 4040 8793 4042 8791 4035 8753 4006 8753
      4039 8815 4041 8816 4040 8796
TIME...MOT...LOC 2121Z 315DEG 21KT 4039 8803

$$

CHURCHILL
295 
WWUS53 KILX 072139
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
439 PM CDT SAT MAY 7 2011

ILC019-183-072145-
/O.CON.KILX.TO.W.0025.000000T0000Z-110507T2145Z/
VERMILION IL-CHAMPAIGN IL-
439 PM CDT SAT MAY 7 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN CHAMPAIGN AND
WEST CENTRAL VERMILION COUNTIES UNTIL 445 PM CDT...

AT 436 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED 5 MILES NORTHEAST OF GIFFORD...OR JUST SOUTHWEST 
OF ELLIS...MOVING SOUTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  POTOMAC AND ARMSTRONG.

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 4039 8791 4037 8784 4033 8771 4023 8783
      4032 8800 4038 8800 4039 8795
TIME...MOT...LOC 2138Z 308DEG 22KT 4033 8793

$$

CHURCHILL

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 4:44 PM CDTTornado WarningILXVermilion46 min
May 7, 4:59 PM CDTSevere Thunderstorm WarningILXChampaign, Vermilion46 min
May 7, 5:12 PM CDTTornado WarningILXChampaign31 min
May 7, 5:17 PM CDTAreal Flood WarningILXLawrence4 days
May 7, 5:25 PM CDTSevere Thunderstorm WarningILXVermilion50 min
May 7, 5:39 PM CDTSevere Thunderstorm WarningILXChampaign, Vermilion51 min
May 7, 6:03 PM CDTTornado WarningILXEdgar, Vermilion42 min
May 7, 6:24 PM CDTTornado WarningILXEdgar51 min
May 7, 6:57 PM CDTTornado WarningILXEdgar25 min

Nearby

Tornado Warnings in Illinois, 2011Every tornado warning in 2011Tornadoes in 2011

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.