Alert archive / Illinois / Tornado Warnings in 2011

Tornado Warning 28, NWS Lincoln, IL

May 7, 2011Edgar County, Vermilion County, Illinois

NWS Lincoln, IL issued this tornado warning at May 7, 2011, 6:03 PM CDT for Edgar County, Vermilion County, Illinois. It was in force for 42 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
May 7, 2011, 6:03 PM CDT (23:03 UTC)
Expired
May 7, 2011, 6:45 PM CDT
In force
42 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon

Counties Edgar County, IL, Vermilion County, IL

The radar

The Indianapolis radar (KIND), 126 km from the middle of the area, began a volume at 23:03 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

TimeReportWhereRemark
May 7, 6:08 PM CDTTORNADO2 Se Allerton, ILSEVERAL WEAK TORNADOES

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.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.1 hours before the alert went out and 79 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.

465 
WFUS53 KILX 072303
TORILX
ILC045-183-072345-
/O.NEW.KILX.TO.W.0028.110507T2303Z-110507T2345Z/

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 645 PM CDT.

* AT 559 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS 
  DANGEROUS STORM WAS LOCATED JUST NORTHEAST OF ALLERTON...OR
  20 MILES SOUTHWEST OF DANVILLE...AND MOVING SOUTHEAST AT 25 MPH. 
  AT 558 PM...TRAINED SPOTTERS REPORTED A FUNNEL CLOUD WITH THIS
  STORM.

* LOCATIONS IMPACTED INCLUDE...
  SIDELL...RIDGE FARM...CHRISMAN...JAMAICA...INDIANOLA AND SCOTTLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.

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 3973 8754 3990 8794 4001 8794 4003 8794
      3991 8754
TIME...MOT...LOC 2302Z 296DEG 21KT 3994 8787

$$

CHURCHILL
2 follow-up statements
572 
WWUS53 KILX 072312
SVSILX

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

ILC045-183-072345-
/O.CON.KILX.TO.W.0028.000000T0000Z-110507T2345Z/
VERMILION IL-EDGAR IL-
612 PM CDT SAT MAY 7 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN EDGAR AND
SOUTHERN VERMILION COUNTIES UNTIL 645 PM CDT...

AT 608 PM CDT...A TRAINED HAM RADIO SPOTTER REPORTED A TORNADO.  
THIS TORNADO WAS LOCATED 2 MILES SOUTHEAST OF ALLERTON.

LOCATIONS IMPACTED INCLUDE...
  SIDELL...RIDGE FARM...CHRISMAN...INDIANOLA AND SCOTTLAND.

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 3973 8754 3990 8794 3999 8794 4001 8793
      3991 8754
TIME...MOT...LOC 2311Z 296DEG 20KT 3989 8787

$$

CHURCHILL
629 
WWUS53 KILX 072343
SVSILX

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

ILC045-183-072352-
/O.EXP.KILX.TO.W.0028.000000T0000Z-110507T2345Z/
VERMILION IL-EDGAR IL-
643 PM CDT SAT MAY 7 2011

...THE TORNADO WARNING FOR NORTHEASTERN EDGAR AND SOUTHERN VERMILION
COUNTIES WILL EXPIRE AT 645 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM CDT.

REMEMBER...A TORNADO WARNING REMAINS IN EFFECT FURTHER SOUTH TOWARD 
CENTRAL EDGAR COUNTY UNTIL 715 PM CDT.

LAT...LON 3973 8754 3990 8794 3999 8794 4001 8793
      3991 8754
TIME...MOT...LOC 2342Z 296DEG 20KT 3981 8767

$$

CHURCHILL

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 4:06 PM CDTTornado WarningILXChampaign, Vermilion39 min
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, 6:24 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.