Alert archive / Illinois / Tornado Warnings in 2012

Tornado Warning 7, NWS Lincoln, IL

May 1, 2012Champaign County, Illinois

NWS Lincoln, IL issued this tornado warning at May 1, 2012, 4:01 PM CDT for Champaign County, Illinois. It was in force for 44 min. 9 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, 4:01 PM CDT (21:01 UTC)
Expired
May 1, 2012, 4:45 PM CDT
In force
44 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon

County Champaign County, IL

The radar

The Lincoln radar (KILX), 95 km from the middle of the area, began a volume at 21:04 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, 4:07 PM CDTFUNNEL CLOUD7 Ese Monticello, IL
May 1, 4:12 PM CDTTORNADO7 Ese Monticello, ILBRIEF TOUCHDOWN IN FARM FIELD.
May 1, 4:15 PM CDTTORNADO4 Sw Savoy, ILTORNADO IN FARM FIELD NEAR 900N AND 500 E. FROM PIATT CO. EMA.
May 1, 4:15 PM CDTTORNADO6 Sw Savoy, ILTORNADO WAS ON GROUND FOR 7 MINUTES. FROM PIATT CO EMA.
May 1, 4:32 PM CDTHAIL 1St. Joseph, IL
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

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, 9.0 hours before the alert went out and 34 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.

316 
WFUS53 KILX 012101
TORILX
ILC019-012145-
/O.NEW.KILX.TO.W.0007.120501T2101Z-120501T2145Z/

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 445 PM CDT.

* AT 359 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 8
  MILES SOUTHEAST OF WHITE HEATH...OR 8 MILES SOUTHEAST OF
  MONTICELLO. A TORNADO MAY DEVELOP AT ANY TIME. DOPPLER RADAR SHOWED
  THIS DANGEROUS STORM MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CHAMPAIGN...TOLONO...SAVOY...PHILO...URBANA...SIDNEY...ST.
  JOSEPH...OGDEN...HOMER...SADORUS...WILLARD AIRPORT...ROYAL AND
  FLATVILLE.

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 3988 8842 3988 8846 4008 8846 4028 8797
      4022 8794 4002 8794
TIME...MOT...LOC 2101Z 246DEG 25KT 3999 8842

$$

BAK
2 follow-up statements
397 
WWUS53 KILX 012116
SVSILX

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

ILC019-012145-
/O.CON.KILX.TO.W.0007.000000T0000Z-120501T2145Z/
CHAMPAIGN IL-
416 PM CDT TUE MAY 1 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN CHAMPAIGN COUNTY
UNTIL 445 PM CDT...

AT 412 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD.  A
TORNADO MAY DEVELOP AT ANY TIME. THIS DANGEROUS STORM WAS LOCATED
NEAR TOLONO...OR 7 MILES SOUTHWEST OF CHAMPAIGN...MOVING NORTHEAST AT
30 MPH.

AT 410 PM AND AGAIN AT 413 PM...BRIEF TORNADO TOUCHDOWNS WERE 
REPORTED IN RURAL WESTERN CHAMPAIGN COUNTY.

LOCATIONS IMPACTED INCLUDE...
  CHAMPAIGN...TOLONO...SAVOY...PHILO...URBANA...SIDNEY...ST.
  JOSEPH...OGDEN...HOMER...WILLARD AIRPORT...ROYAL AND FLATVILLE.

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 3988 8842 3988 8846 4008 8846 4028 8797
      4022 8794 4002 8794
TIME...MOT...LOC 2114Z 246DEG 25KT 4003 8831

$$

BAK
436 
WWUS53 KILX 012130
SVSILX

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

ILC019-012145-
/O.CON.KILX.TO.W.0007.000000T0000Z-120501T2145Z/
CHAMPAIGN IL-
430 PM CDT TUE MAY 1 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN CHAMPAIGN COUNTY
UNTIL 445 PM CDT...

AT 425 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD.  A
TORNADO MAY DEVELOP AT ANY TIME. THIS DANGEROUS STORM WAS LOCATED
NEAR PHILO...OR 6 MILES SOUTHEAST OF CHAMPAIGN...MOVING NORTHEAST AT
30 MPH.

NUMEROUS BRIEF TORNADAO TOUCHDOWNS HAVE BEEN REPORTED WITH THIS 
STORM.

LOCATIONS IMPACTED INCLUDE...
  SIDNEY...ST. JOSEPH...OGDEN...HOMER...ROYAL AND FLATVILLE.

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 3988 8842 3988 8846 4008 8846 4028 8797
      4022 8794 4002 8794
TIME...MOT...LOC 2129Z 247DEG 25KT 4006 8814

$$

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, 4:38 PM CDTTornado WarningILXChampaign, Vermilion52 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.