Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 96, NWS Lincoln, IL

August 16, 2012McLean County, Woodford County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Aug 16, 2012, 11:38 AM CDT for McLean County, Woodford County, Illinois. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 16, 2012, 11:38 AM CDT (16:38 UTC)
Expired
Aug 16, 2012, 12:45 PM CDT
In force
67 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties McLean County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 82 km from the middle of the area, began a volume at 16:41 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 4.6 hours before the alert went out and 74 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 2012-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 817 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 12:00Z on 2012-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
817 J/kg
Mixed-layer CIN
-262 J/kg
Mixed-layer LCL
1559 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

749 
WUUS53 KILX 161638
SVRILX
ILC113-203-161745-
/O.NEW.KILX.SV.W.0096.120816T1638Z-120816T1745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1138 AM CDT THU AUG 16 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL MCLEAN COUNTY IN CENTRAL ILLINOIS...
  EASTERN WOODFORD COUNTY IN CENTRAL ILLINOIS...

* UNTIL 1245 PM CDT.

* AT 1136 AM 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 FLANAGAN TO EL PASO TO SECOR...
  AND MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GRIDLEY...LEXINGTON...CHENOA...KAPPA...LAKE BLOOMINGTON AND WESTON.

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 4076 8859 4076 8858
      4063 8857 4062 8860 4067 8922 4077 8905
      4093 8904 4093 8894
TIME...MOT...LOC 1638Z 265DEG 36KT 4089 8892 4078 8892
          4069 8911
WIND...HAIL 60MPH 1.00IN

$$

GOETSCH
3 follow-up statements
223 
WWUS53 KILX 161700
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1200 PM CDT THU AUG 16 2012

ILC113-203-161745-
/O.CON.KILX.SV.W.0096.000000T0000Z-120816T1745Z/
MCLEAN IL-WOODFORD IL-
1200 PM CDT THU AUG 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
WOODFORD AND NORTH CENTRAL MCLEAN COUNTIES UNTIL 1245 PM CDT...

AT 1155 AM 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 FAIRBURY TO 6 MILES SOUTHEAST OF
CHENOA TO HUDSON...MOVING EAST AT 60 MPH.

IN ADDITION...OTHER SEVERE SEVERE WERE LOCATED NEAR PANOLA...MOVING TO 
THE EAST AT 50 MPH. 

LOCATIONS IMPACTED INCLUDE...
  LEXINGTON.

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 4076 8859 4076 8858
      4063 8857 4062 8860 4067 8922 4077 8905
      4093 8904 4093 8894
TIME...MOT...LOC 1657Z 275DEG 50KT 4075 8850 4068 8859
          4063 8889
WIND...HAIL 60MPH 1.00IN

$$

GOETSCH
070 
WWUS53 KILX 161721
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1221 PM CDT THU AUG 16 2012

ILC113-203-161745-
/O.CON.KILX.SV.W.0096.000000T0000Z-120816T1745Z/
MCLEAN IL-WOODFORD IL-
1221 PM CDT THU AUG 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
WOODFORD AND NORTH CENTRAL MCLEAN COUNTIES UNTIL 1245 PM CDT...

AT 1218 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED AN
ADDITIONAL 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 SECOR TO EL PASO...MOVING EAST AT
45 MPH.

LOCATIONS IMPACTED INCLUDE...
  GRIDLEY...CHENOA...LEXINGTON...KAPPA...LAKE BLOOMINGTON AND WESTON.

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 4086 8904 4087 8892 4076 8892 4076 8858
      4063 8857 4062 8860 4067 8922 4077 8905
TIME...MOT...LOC 1721Z 283DEG 38KT 4072 8908 4075 8897
WIND...HAIL 60MPH 1.00IN

$$

GOETSCH
121 
WWUS53 KILX 161736
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1236 PM CDT THU AUG 16 2012

ILC113-203-161746-
/O.EXP.KILX.SV.W.0096.000000T0000Z-120816T1745Z/
MCLEAN IL-WOODFORD IL-
1236 PM CDT THU AUG 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WOODFORD AND
NORTH CENTRAL MCLEAN COUNTIES WILL EXPIRE AT 1245 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

LAT...LON 4086 8904 4087 8892 4076 8892 4076 8858
      4063 8857 4062 8860 4067 8922 4077 8905
TIME...MOT...LOC 1736Z 283DEG 38KT 4068 8888 4071 8877

$$

GOETSCH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 8:26 AM CDTSpecial Weather StatementILXMcLean, Tazewell, Woodford64 min
Aug 16, 9:27 AM CDTSpecial Weather StatementILXDeWitt, Logan, McLean63 min
Aug 16, 11:49 AM CDTSevere Thunderstorm WarningILXMcLean, Tazewell, Woodford56 min
Aug 16, 1:39 PM CDTSevere Thunderstorm WarningILXMcLean, Tazewell42 min
Aug 16, 2:06 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas, Edgar, Vermilion54 min
Aug 16, 2:15 PM CDTSpecial Weather StatementILXChristian, Sangamon60 min
Aug 16, 2:58 PM CDTSevere Thunderstorm WarningILXChristian50 min
Aug 16, 3:15 PM CDTSevere Thunderstorm WarningILXChristian, Coles, Cumberland, Douglas, Macon, Moultrie and 2 more60 min
Aug 16, 3:29 PM CDTSevere Thunderstorm WarningILXChampaign, Edgar, Vermilion61 min
Aug 16, 3:41 PM CDTTornado WarningILXColes, Cumberland, Moultrie, Shelby37 min
Aug 16, 3:45 PM CDTSevere Thunderstorm WarningILXCumberland, Effingham, Jasper, Shelby60 min
Aug 16, 3:57 PM CDTSevere Thunderstorm WarningILXClark, Coles, Cumberland, Douglas, Edgar63 min
Aug 16, 3:59 PM CDTTornado WarningILXClay, Cumberland, Effingham, Jasper46 min
Aug 16, 4:01 PM CDTTornado WarningILXClark, Coles, Cumberland, Edgar35 min
Aug 16, 4:29 PM CDTSevere Thunderstorm WarningILXClay, Crawford, Jasper, Lawrence, Richland61 min
Aug 16, 4:43 PM CDTSevere Thunderstorm WarningILXCumberland, Jasper17 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.