Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 77, NWS Lincoln, IL

June 16, 20124 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 16, 2012, 8:29 PM CDT for 4 counties in Illinois. It was in force for 40 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, 8:29 PM CDT (01:29 UTC)
Expired
Jun 16, 2012, 9:09 PM CDT
In force
40 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

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

The radar

The Lincoln radar (KILX), 73 km from the middle of the area, began a volume at 01:32 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
Jun 16, 8:23 PM CDTSevere Thunderstorm WatchSPC3 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.5 hours before the alert went out and 86 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.

946 
WUUS53 KILX 170129
SVRILX
ILC113-143-179-203-170230-
/O.NEW.KILX.SV.W.0077.120617T0129Z-120617T0230Z/

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN MCLEAN COUNTY IN CENTRAL ILLINOIS...
  EASTERN PEORIA COUNTY IN CENTRAL ILLINOIS...
  NORTHERN TAZEWELL COUNTY IN CENTRAL ILLINOIS...
  WOODFORD COUNTY IN CENTRAL ILLINOIS...

* UNTIL 930 PM CDT.

* AT 826 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 DUNLAP TO CREVE COEUR TO SOUTH PEKIN...AND MOVING EAST AT 35
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  EUREKA...BLOOMINGTON...EAST PEORIA...SPRING BAY...TREMONT...ROME...
  GERMANTOWN HILLS...MORTON...CHILLICOTHE...WASHINGTON...MACKINAW...
  METAMORA...DEER CREEK...WASHBURN...GOODFIELD...DANVERS...ROANOKE...
  CARLOCK...SECOR AND NORMAL.

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 4092 8892 4076 8892 4075 8899 4046 8892
      4047 8970 4088 8974 4092 8947 4093 8905
      4093 8904
TIME...MOT...LOC 0129Z 248DEG 31KT 4083 8958 4064 8957
          4053 8960
WIND...HAIL 60MPH <.75IN

$$
2 follow-up statements
912 
WWUS53 KILX 170150
SVSILX

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

ILC143-170200-
/O.CAN.KILX.SV.W.0077.000000T0000Z-120617T0230Z/
PEORIA IL-
850 PM CDT SAT JUN 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PEORIA COUNTY IS
CANCELLED...

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

LAT...LON 4092 8892 4076 8892 4075 8899 4046 8892
      4047 8970 4069 8959 4071 8955 4076 8956
      4091 8948 4093 8905
TIME...MOT...LOC 0150Z 261DEG 38KT 4089 8927 4070 8926
          4059 8930

$$

ILC113-179-203-170230-
/O.CON.KILX.SV.W.0077.000000T0000Z-120617T0230Z/
MCLEAN IL-TAZEWELL IL-WOODFORD IL-
850 PM CDT SAT JUN 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WOODFORD...
NORTHERN TAZEWELL AND NORTHWESTERN MCLEAN COUNTIES UNTIL 930 PM
CDT...

AT 849 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 WASHBURN TO EUREKA TO DEER CREEK...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  BLOOMINGTON...ROANOKE...DANVERS...SECOR...CARLOCK...MINONK...EL
  PASO...NORMAL...HUDSON...CONGERVILLE...BENSON...EVERGREEN LAKE...
  PANOLA AND KAPPA.

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 4092 8892 4076 8892 4075 8899 4046 8892
      4047 8970 4069 8959 4071 8955 4076 8956
      4091 8948 4093 8905
TIME...MOT...LOC 0150Z 261DEG 38KT 4089 8927 4070 8926
          4059 8930
WIND...HAIL 60MPH <.75IN

$$
844 
WWUS53 KILX 170209
SVSILX

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

ILC113-179-203-170219-
/O.CAN.KILX.SV.W.0077.000000T0000Z-120617T0230Z/
MCLEAN IL-TAZEWELL IL-WOODFORD IL-
909 PM CDT SAT JUN 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR WOODFORD...NORTHERN TAZEWELL
AND NORTHWESTERN MCLEAN COUNTIES IS CANCELLED...

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 4092 8892 4076 8892 4075 8899 4046 8892
      4047 8970 4069 8959 4071 8955 4076 8956
      4091 8948 4093 8905
TIME...MOT...LOC 0209Z 261DEG 38KT 4092 8901 4073 8900
          4062 8904

$$

BAK

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, 8:07 PM CDTSevere Thunderstorm WarningILXCass, Fulton, Logan, Mason, Menard, Tazewell53 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.