Alert archive / Illinois / Tornado Warnings in 2012

Tornado Warning 8, NWS Lincoln, IL

May 1, 2012Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this tornado warning at May 1, 2012, 4:38 PM CDT for Champaign County, Vermilion County, Illinois. It was in force for 52 min. 5 reports 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 1, 2012, 4:38 PM CDT (21:38 UTC)
Expired
May 1, 2012, 5:30 PM CDT
In force
52 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon

Counties Champaign County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 123 km from the middle of the area, began a volume at 21:41 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.

What was reported inside it

TimeReportWhereRemark
May 1, 4:43 PM CDTTORNADOSidney, ILBRIEF TOUCHDOWN ON WEST SIDE OF SIDNEY.
May 1, 4:47 PM CDTHAIL 12 N Homer, ILSWOP REPORT. RELAYED BY CHAMPAIGN EMA. CORRECTED HAIL SIZE.
May 1, 4:47 PM CDTHAIL 22 N Homer, ILSWOP REPORT. RELAYED BY CHAMPAIGN EMA.
May 1, 4:49 PM CDTHAIL 0.5Ogden, IL
May 1, 5:20 PM CDTHAIL 1.75Danville, ILAT 14TH ST AND IL RT 1. RELAYED BY EMA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.6 hours before the alert went out and 60 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 2012-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2012-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 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
660 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
138 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.

448 
WFUS53 KILX 012138
TORILX
ILC019-183-012230-
/O.NEW.KILX.TO.W.0008.120501T2138Z-120501T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
438 PM CDT TUE MAY 1 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 530 PM CDT.

* AT 433 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD
  NEAR SIDNEY...OR 10 MILES EAST OF CHAMPAIGN. A TORNADO MAY DEVELOP
  AT ANY TIME. DOPPLER RADAR SHOWED THIS DANGEROUS STORM MOVING
  NORTHEAST AT 30 MPH.

  NUMEORUS BRIEF TORNADO TOUCHDOWNS HAVE BEEN REPORTED WITH THIS 
  STORM. IN ADDITION...AT 432 PM...QUARTER SIZE HAIL WAS REPORTED AT
  ST JOSEPH.

* LOCATIONS IMPACTED INCLUDE...
  DANVILLE...ST. JOSEPH...OGDEN...FITHIAN...OAKWOOD...ROYAL...
  COLLISON...KICKAPOO STATE PARK...MIDDLE FORK WILDLIFE AREA...
  VERMILION COUNTY AIRPORT...BISMARCK AND ALVIN.

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 4000 8814 4015 8813 4036 8753 4012 8753
TIME...MOT...LOC 2136Z 247DEG 25KT 4007 8807

$$

BAK
4 follow-up statements
801 
WWUS53 KILX 012150
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
450 PM CDT TUE MAY 1 2012

ILC019-183-012230-
/O.CON.KILX.TO.W.0008.000000T0000Z-120501T2230Z/
VERMILION IL-CHAMPAIGN IL-
450 PM CDT TUE MAY 1 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL CHAMPAIGN AND
CENTRAL VERMILION COUNTIES UNTIL 530 PM CDT...

AT 445 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD.  A
TORNADO MAY DEVELOP AT ANY TIME. THIS DANGEROUS STORM WAS LOCATED
NEAR OGDEN...OR 15 MILES EAST OF CHAMPAIGN...MOVING EAST AT 30 MPH.

THIS HAS A HISTORY OF BRIEF TORNADO TOUCHDOWNS. IN ADDITION...AT
447 PM...SPOTTERS REPORTED 2 INCH DIAMETER HAIL 2 MILES NORTH OF 
HOMER.

LOCATIONS IMPACTED INCLUDE...
  DANVILLE...FITHIAN...OAKWOOD...ROYAL...COLLISON...KICKAPOO STATE
  PARK...MIDDLE FORK WILDLIFE AREA...VERMILION COUNTY AIRPORT...
  BISMARCK AND ALVIN.

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 4002 8806 4019 8799 4036 8753 4012 8753
TIME...MOT...LOC 2149Z 252DEG 26KT 4009 8795

$$
571 
WWUS53 KILX 012159
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
459 PM CDT TUE MAY 1 2012

ILC019-012209-
/O.CAN.KILX.TO.W.0008.000000T0000Z-120501T2230Z/
CHAMPAIGN IL-
459 PM CDT TUE MAY 1 2012

...THE TORNADO WARNING FOR EAST CENTRAL CHAMPAIGN COUNTY IS
CANCELLED...

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

LAT...LON 4005 8794 4018 8794 4030 8753 4012 8753
TIME...MOT...LOC 2159Z 263DEG 29KT 4008 8783

$$

ILC183-012230-
/O.CON.KILX.TO.W.0008.000000T0000Z-120501T2230Z/
VERMILION IL-
459 PM CDT TUE MAY 1 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL VERMILION COUNTY
UNTIL 530 PM CDT...

AT 457 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD.  A
TORNADO MAY DEVELOP AT ANY TIME. THIS DANGEROUS STORM WAS LOCATED
NEAR FITHIAN...OR 13 MILES WEST OF DANVILLE...MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  DANVILLE...OAKWOOD...KICKAPOO STATE PARK...VERMILION COUNTY AIRPORT
  AND BISMARCK.

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 4005 8794 4018 8794 4030 8753 4012 8753
TIME...MOT...LOC 2159Z 263DEG 29KT 4008 8783

$$
014 
WWUS53 KILX 012210
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
510 PM CDT TUE MAY 1 2012

ILC183-012230-
/O.CON.KILX.TO.W.0008.000000T0000Z-120501T2230Z/
VERMILION IL-
510 PM CDT TUE MAY 1 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL VERMILION COUNTY
UNTIL 530 PM CDT...

AT 508 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR CATLIN...OR 7 MILES SOUTHWEST OF DANVILLE...
MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  DANVILLE AND VERMILION COUNTY AIRPORT.

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 4008 8781 4021 8775 4025 8753 4012 8753
TIME...MOT...LOC 2210Z 263DEG 29KT 4009 8771

$$

BAK
070 
WWUS53 KILX 012227
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
527 PM CDT TUE MAY 1 2012

ILC183-012237-
/O.EXP.KILX.TO.W.0008.000000T0000Z-120501T2230Z/
VERMILION IL-
527 PM CDT TUE MAY 1 2012

...THE TORNADO WARNING FOR CENTRAL VERMILION COUNTY WILL EXPIRE AT
530 PM CDT...

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

LAT...LON 4008 8781 4021 8775 4025 8753 4012 8753
TIME...MOT...LOC 2227Z 263DEG 29KT 4011 8753

$$

BAK

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 5:31 AM CDTDense Fog AdvisoryILXClark, Clay, Coles, Crawford, Cumberland, Douglas and 7 more3 hr
May 1, 4:01 PM CDTTornado WarningILXChampaign44 min
May 1, 5:17 PM CDTTornado WarningILXVermilion13 min

Nearby

Tornado Warnings in Illinois, 2012Every tornado warning in 2012Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.