Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 56, NWS Lincoln, IL

May 3, 2012Marshall County, Peoria County, Stark County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 3, 2012, 11:29 PM CDT for Marshall County, Peoria County, Stark County, Illinois. It was in force for 61 min. 3 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 3, 2012, 11:29 PM CDT (04:29 UTC)
Expired
May 4, 2012, 12:30 AM CDT
In force
61 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Marshall County, IL, Peoria County, IL, Stark County, IL

The radar

The Quad Cities radar (KDVN), 92 km from the middle of the area, began a volume at 04:29 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, 12:08 AM CDTTSTM WND GST 602 Nw Princeville, IL
May 4, 12:08 AM CDTHAIL 12 Nw Princeville, IL
May 4, 12:10 AM CDTTSTM WND DMGPrinceville, ILNUMEROUS TREE LIMBS AND BRANCHES DOWN IN TOWN

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, 4:20 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.5 hours before the alert went out and 87 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, Davenport, at 00:00Z on 2012-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1056 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, Davenport, at 00:00Z on 2012-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
1056 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1420 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.7

Open this sounding in Storm Lab

The text

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

460 
WUUS53 KILX 040429
SVRILX
ILC123-143-175-040530-
/O.NEW.KILX.SV.W.0056.120504T0429Z-120504T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1129 PM CDT THU MAY 3 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN MARSHALL COUNTY IN CENTRAL ILLINOIS...
  NORTHERN PEORIA COUNTY IN CENTRAL ILLINOIS...
  STARK COUNTY IN NORTH CENTRAL ILLINOIS...

* UNTIL 1230 AM CDT.

* AT 1124 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  ALTONA...OR 11 MILES SOUTH OF CAMBRIDGE...AND MOVING EAST AT 40
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  LACON...LA FAYETTE...ELMORE...WEST JERSEY...LAURA...TOULON...
  ELMIRA...OSCEOLA...WYOMING...PRINCEVILLE...CASTLETON...BRADFORD...
  CAMP GROVE...CHILLICOTHE...SPARLAND...HENRY...MONICA...DUNCAN...
  LAWN RIDGE AND HOPEWELL.

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.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR NORTHERN ILLINOIS.

LAT...LON 4124 8964 4123 8963 4115 8963 4115 8933
      4093 8932 4091 8948 4091 8998 4115 8999
      4116 8988 4123 8987 4124 8986
TIME...MOT...LOC 0429Z 279DEG 35KT 4115 9006
WIND...HAIL 60MPH 1.00IN

$$

CHS
1 follow-up statement
741 
WWUS53 KILX 040448
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1148 PM CDT THU MAY 3 2012

ILC123-143-175-040530-
/O.CON.KILX.SV.W.0056.000000T0000Z-120504T0530Z/
MARSHALL IL-PEORIA IL-STARK IL-
1148 PM CDT THU MAY 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR STARK...
NORTHERN PEORIA AND WESTERN MARSHALL COUNTIES UNTIL 1230 AM CDT...

AT 1145 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED NEAR TOULON...OR 9 MILES SOUTHEAST OF
KEWANEE...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  LACON...OSCEOLA...WYOMING...PRINCEVILLE...CASTLETON...BRADFORD...
  CAMP GROVE...CHILLICOTHE...SPARLAND...HENRY...MONICA...DUNCAN...
  LAWN RIDGE AND HOPEWELL.

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4124 8964 4123 8963 4115 8963 4115 8933
      4093 8932 4091 8948 4091 8998 4115 8999
      4116 8988 4123 8987 4124 8986
TIME...MOT...LOC 0448Z 279DEG 35KT 4112 8982
WIND...HAIL 60MPH <.75IN

$$

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 4, 12:07 AM CDTSevere Thunderstorm WarningILXPeoria, Tazewell, Woodford53 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.