Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 57, NWS Lincoln, IL

May 4, 2012Peoria County, Tazewell County, Woodford County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 4, 2012, 12:07 AM CDT for Peoria County, Tazewell County, Woodford County, Illinois. It was in force for 53 min. 2 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 4, 2012, 12:07 AM CDT (05:07 UTC)
Expired
May 4, 2012, 1:00 AM CDT
In force
53 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Peoria County, IL, Tazewell County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 69 km from the middle of the area, began a volume at 05:08 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.

What was reported inside it

TimeReportWhereRemark
May 4, 12:30 AM CDTTSTM WND DMG1 Sw Rome, IL4 INCH BRANCH DOWN AT OLD GALENA ROAD AND CEDAR HILLS ROAD
May 4, 12:45 AM CDTTSTM WND DMG2 E Low Point, ILPOWER LINES DOWN AT 1950 N AND 1400 E.

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 3, 11:34 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.1 hours before the alert went out and 94 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 00:00Z on 2012-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1905 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 00:00Z on 2012-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 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
1905 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1071 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

537 
WUUS53 KILX 040507
SVRILX
ILC143-179-203-040600-
/O.NEW.KILX.SV.W.0057.120504T0507Z-120504T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1207 AM CDT FRI MAY 4 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN PEORIA COUNTY IN CENTRAL ILLINOIS...
  NORTHEASTERN TAZEWELL COUNTY IN CENTRAL ILLINOIS...
  WOODFORD COUNTY IN CENTRAL ILLINOIS...

* UNTIL 100 AM CDT.

* AT 1203 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR PRINCEVILLE...OR 14 MILES
  NORTHWEST OF PEORIA...AND MOVING SOUTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PEORIA...EUREKA...DUNLAP...CHILLICOTHE...ROME...SPRING BAY...
  BELLEVUE...WEST PEORIA...WASHBURN...GERMANTOWN HILLS...CREVE
  COEUR...EAST PEORIA...MARQUETTE HEIGHTS...METAMORA...WASHINGTON...
  MORTON...ROANOKE...DEER CREEK...SECOR AND GOODFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4093 8946 4092 8947 4093 8908 4063 8905
      4063 8910 4061 8910 4061 8913 4060 8914
      4057 8954 4079 8982 4092 8984 4093 8954
TIME...MOT...LOC 0508Z 316DEG 38KT 4088 8969
WIND...HAIL 60MPH <.75IN

$$

CHS
2 follow-up statements
995 
WWUS53 KILX 040520
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1220 AM CDT FRI MAY 4 2012

ILC143-179-203-040600-
/O.CON.KILX.SV.W.0057.000000T0000Z-120504T0600Z/
PEORIA IL-TAZEWELL IL-WOODFORD IL-
1220 AM CDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WOODFORD...
NORTHEASTERN TAZEWELL AND EASTERN PEORIA COUNTIES UNTIL 100 AM CDT...

AT 1210 AM CDT...LOCAL LAW ENFORCEMENT REPORTED A SEVERE THUNDERSTORM
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
NEAR SPRING BAY...OR 8 MILES NORTH OF PEORIA...MOVING SOUTHEAST AT 45
MPH.

LOCATIONS IMPACTED INCLUDE...
  PEORIA...EUREKA...BELLEVUE...SPRING BAY...WEST PEORIA...CREVE
  COEUR...GERMANTOWN HILLS...EAST PEORIA...WASHBURN...METAMORA...
  WASHINGTON...MORTON...ROANOKE...DEER CREEK...GOODFIELD...SECOR...
  PEORIA HEIGHTS...LOW POINT...CAZENOVIA AND GROVELAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4093 8946 4092 8947 4093 8908 4063 8905
      4063 8910 4061 8910 4061 8913 4060 8914
      4057 8954 4079 8982 4092 8984 4093 8954
TIME...MOT...LOC 0520Z 305DEG 40KT 4084 8956
WIND...HAIL 60MPH <.75IN

$$

CHS
766 
WWUS53 KILX 040600
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
100 AM CDT FRI MAY 4 2012

ILC143-179-203-040610-
/O.EXP.KILX.SV.W.0057.000000T0000Z-120504T0600Z/
PEORIA IL-TAZEWELL IL-WOODFORD IL-
100 AM CDT FRI MAY 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR WOODFORD...NORTHEASTERN
TAZEWELL AND EASTERN PEORIA COUNTIES HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS 
THUNDERSTORM.

LAT...LON 4093 8946 4092 8947 4093 8908 4063 8905
      4063 8910 4061 8910 4061 8913 4060 8914
      4057 8954 4079 8982 4092 8984 4093 8954
TIME...MOT...LOC 0520Z 305DEG 40KT 4084 8956

$$

CHS

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 7:26 PM CDTSpecial Weather StatementILXMarshall64 min
May 3, 7:36 PM CDTSevere Thunderstorm WarningILXMarshall54 min
May 3, 8:24 PM CDTSevere Thunderstorm WarningILXMarshall51 min
May 3, 8:39 PM CDTFlash Flood WarningILXMarshall6 hr
May 3, 11:16 PM CDTSevere Thunderstorm WarningILXKnox44 min
May 3, 11:29 PM CDTSevere Thunderstorm WarningILXMarshall, Peoria, Stark61 min
May 4, 12:29 AM CDTSevere Thunderstorm WarningILXMarshall, Peoria46 min
May 4, 12:52 AM CDTSevere Thunderstorm WarningILXMcLean, Woodford35 min
May 4, 2:29 AM CDTFlash Flood WarningILXMarshall6 hr
May 4, 8:47 AM CDTSevere Thunderstorm WarningILXClay, Jasper, Richland43 min
May 4, 1:22 PM CDTSevere Thunderstorm WarningILXLawrence38 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2012Every severe thunderstorm warning 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.