Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 76, NWS Lincoln, IL

June 16, 20126 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 16, 2012, 8:07 PM CDT for 6 counties in Illinois. It was in force for 53 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
Jun 16, 2012, 8:07 PM CDT (01:07 UTC)
Expired
Jun 16, 2012, 9:00 PM CDT
In force
53 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Cass County, IL, Fulton County, IL, Logan County, IL, Mason County, IL, Menard County, IL, Tazewell County, IL

The radar

The Lincoln radar (KILX), 48 km from the middle of the area, began a volume at 01:10 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
Jun 16, 8:31 PM CDTTSTM WND GST 65Tremont, IL

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
Jun 16, 2:45 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.1 hours before the alert went out and 109 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 2012-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1606 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2012-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.1939Sfc1 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
1606 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1612 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

198 
WUUS53 KILX 170107
SVRILX
ILC017-057-107-125-129-179-170200-
/O.NEW.KILX.SV.W.0076.120617T0107Z-120617T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
807 PM CDT SAT JUN 16 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN CASS COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHEASTERN FULTON COUNTY IN WEST CENTRAL ILLINOIS...
  NORTHWESTERN LOGAN COUNTY IN CENTRAL ILLINOIS...
  MASON COUNTY IN CENTRAL ILLINOIS...
  NORTHERN MENARD COUNTY IN CENTRAL ILLINOIS...
  SOUTHERN TAZEWELL COUNTY IN CENTRAL ILLINOIS...

* UNTIL 900 PM CDT.

* AT 806 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM IPAVA TO VIRGINIA...AND MOVING
  EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HAVANA...MASON CITY...LINCOLN...CHANDLERVILLE...BATH...KILBOURNE...
  PETERSBURG...EASTON...GREENVIEW...MANITO...MIDDLETOWN...GREEN
  VALLEY...SAN JOSE...SOUTH PEKIN...DELAVAN...EMDEN...HARTSBURG...
  TREMONT...HOPEDALE AND ARMINGTON.

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 4063 8937 4012 8926 3995 9017 4016 9021
      4018 9020 4019 9021 4035 9024
TIME...MOT...LOC 0107Z 249DEG 36KT 4032 9026 3996 9017
WIND...HAIL 60MPH 1.00IN

$$

BAK
2 follow-up statements
028 
WWUS53 KILX 170146
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
846 PM CDT SAT JUN 16 2012

ILC017-057-170156-
/O.CAN.KILX.SV.W.0076.000000T0000Z-120617T0200Z/
CASS IL-FULTON IL-
846 PM CDT SAT JUN 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FULTON AND
NORTHEASTERN CASS COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 4003 8983 4046 8991 4063 8937 4012 8926
TIME...MOT...LOC 0146Z 249DEG 36KT 4046 8978 4010 8969

$$

ILC107-125-129-179-170200-
/O.CON.KILX.SV.W.0076.000000T0000Z-120617T0200Z/
LOGAN IL-MASON IL-MENARD IL-TAZEWELL IL-
846 PM CDT SAT JUN 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR TAZEWELL...
NORTHEASTERN MENARD...EASTERN MASON AND NORTHWESTERN LOGAN COUNTIES
UNTIL 900 PM CDT...

AT 843 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM MANITO TO GREENVIEW...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  MASON CITY...LINCOLN...MIDDLETOWN...GREEN VALLEY...SOUTH PEKIN...
  SAN JOSE...DELAVAN...EMDEN...HARTSBURG...TREMONT...HOPEDALE...
  ARMINGTON...MACKINAW...NEW HOLLAND...DILLON AND LAWNDALE.

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 4003 8983 4046 8991 4063 8937 4012 8926
TIME...MOT...LOC 0146Z 249DEG 36KT 4046 8978 4010 8969
WIND...HAIL 60MPH <.75IN

$$

BAK
335 
WWUS53 KILX 170200
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
900 PM CDT SAT JUN 16 2012

ILC107-125-129-179-170210-
/O.EXP.KILX.SV.W.0076.000000T0000Z-120617T0200Z/
LOGAN IL-MASON IL-MENARD IL-TAZEWELL IL-
900 PM CDT SAT JUN 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR TAZEWELL...NORTHEASTERN
MENARD...EASTERN MASON AND NORTHWESTERN LOGAN COUNTIES HAS EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.  HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH
THESE THUNDERSTORMS.

LAT...LON 4003 8983 4046 8991 4063 8937 4012 8926
TIME...MOT...LOC 0200Z 249DEG 36KT 4051 8961 4015 8952

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 7:24 PM CDTSevere Thunderstorm WarningILXFulton, Knox66 min
Jun 16, 7:39 PM CDTTornado WarningILXKnox, Peoria, Stark18 min
Jun 16, 7:43 PM CDTSevere Thunderstorm WarningILXPeoria, Tazewell, Woodford47 min
Jun 16, 8:29 PM CDTSevere Thunderstorm WarningILXMcLean, Peoria, Tazewell, Woodford40 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.