Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 30, NWS Lincoln, IL

March 23, 2012McLean County, Marshall County, Woodford County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Mar 23, 2012, 4:29 PM CDT for McLean County, Marshall County, Woodford County, Illinois. It was in force for 34 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
Mar 23, 2012, 4:29 PM CDT (21:29 UTC)
Expired
Mar 23, 2012, 5:03 PM CDT
In force
34 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Marshall County, IL, McLean County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 91 km from the middle of the area, began a volume at 21:31 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, 9.5 hours before the alert went out and 92 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 2012-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2012-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
808 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

491 
WUUS53 KILX 232129
SVRILX
ILC113-123-203-232230-
/O.NEW.KILX.SV.W.0030.120323T2129Z-120323T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
429 PM CDT FRI MAR 23 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 530 PM CDT.

* AT 426 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR GRIDLEY...OR 15 MILES WEST OF PONTIAC...AND
  MOVING NORTH AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MINONK...TOLUCA...WENONA...VARNA...BENSON AND PATTONSBURG.

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 4110 8904 4093 8904 4093 8894 4092 8892
      4076 8892 4076 8880 4071 8880 4071 8904
      4111 8930 4111 8905
TIME...MOT...LOC 2129Z 158DEG 22KT 4082 8892
WIND...HAIL <50MPH 1.00IN

$$

CHS
1 follow-up statement
587 
WWUS53 KILX 232203
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
503 PM CDT FRI MAR 23 2012

ILC113-123-203-232213-
/O.CAN.KILX.SV.W.0030.000000T0000Z-120323T2230Z/
MCLEAN IL-MARSHALL IL-WOODFORD IL-
503 PM CDT FRI MAR 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WOODFORD...
EASTERN MARSHALL AND NORTH CENTRAL MCLEAN COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 4110 8904 4093 8904 4093 8894 4092 8892
      4076 8892 4076 8880 4071 8880 4071 8904
      4111 8930 4111 8905
TIME...MOT...LOC 2203Z 158DEG 22KT 4101 8902

$$

CHS

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 23, 1:11 PM CDTSevere Thunderstorm WarningILXColes, Cumberland, Effingham, Shelby29 min
Mar 23, 1:33 PM CDTSevere Thunderstorm WarningILXColes, Moultrie42 min
Mar 23, 2:08 PM CDTTornado WarningILXClay27 min
Mar 23, 2:12 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas35 min
Mar 23, 2:14 PM CDTSevere Thunderstorm WarningILXLawrence, Richland31 min
Mar 23, 2:28 PM CDTTornado WarningILXClay, Effingham30 min
Mar 23, 2:33 PM CDTSevere Thunderstorm WarningILXLawrence37 min
Mar 23, 2:39 PM CDTSevere Thunderstorm WarningILXCrawford, Jasper, Lawrence, Richland22 min
Mar 23, 2:44 PM CDTSevere Thunderstorm WarningILXChampaign46 min
Mar 23, 2:53 PM CDTTornado WarningILXClay24 min
Mar 23, 3:26 PM CDTSevere Thunderstorm WarningILXClark, Edgar34 min
Mar 23, 3:28 PM CDTSevere Thunderstorm WarningILXChampaign17 min
Mar 23, 3:35 PM CDTSevere Thunderstorm WarningILXVermilion38 min
Mar 23, 3:42 PM CDTSevere Thunderstorm WarningILXChampaign, Vermilion25 min
Mar 23, 3:44 PM CDTSevere Thunderstorm WarningILXEdgar31 min
Mar 23, 4:08 PM CDTSevere Thunderstorm WarningILXVermilion26 min
Mar 23, 4:31 PM CDTSevere Thunderstorm WarningILXVermilion29 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.