Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 43, NWS Lincoln, IL

April 1, 2012McLean County, Woodford County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 1, 2012, 4:22 AM CDT for McLean County, Woodford County, Illinois. It was in force for 38 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: Apr 1, 2012, 4:22 AM CDT (09:22 UTC)
Expired: Apr 1, 2012, 5:00 AM CDT
In force: 38 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties McLean County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 43 km from the middle of the area, began a volume at 09:23 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 31, 9:24 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 9.4 hours before the alert went out and 56 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1987 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

309 
WUUS53 KILX 010922
SVRILX
ILC113-203-011000-
/O.NEW.KILX.SV.W.0043.120401T0922Z-120401T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
422 AM CDT SUN APR 1 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN MCLEAN COUNTY IN CENTRAL ILLINOIS...
  SOUTH CENTRAL WOODFORD COUNTY IN CENTRAL ILLINOIS...

* UNTIL 500 AM CDT.

* AT 422 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR GOODFIELD...OR 10 MILES SOUTH OF EUREKA...  
  AND WAS MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BLOOMINGTON...CARLOCK...DANVERS...STANFORD...NORMAL AND SHIRLEY.

THIS INCLUDES INTERSTATE 55 BETWEEN MILE MARKERS 146 AND 163...AND 
INTERSTATE 74 BETWEEN MILE MARKERS 112 AND 141.

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 4042 8883 4029 8913 4051 8927 4062 8927
      4066 8921
TIME...MOT...LOC 0922Z 315DEG 30KT 4055 8922
WIND...HAIL <50MPH 1.00IN

$$
GEELHART

3 follow-up statements

447 
WWUS53 KILX 010933
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
433 AM CDT SUN APR 1 2012

ILC203-010942-
/O.CAN.KILX.SV.W.0043.000000T0000Z-120401T1000Z/
WOODFORD IL-
433 AM CDT SUN APR 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL WOODFORD COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.

LAT...LON 4059 8926 4059 8914 4042 8883 4029 8913
      4051 8927
TIME...MOT...LOC 0932Z 312DEG 21KT 4055 8918

$$
ILC113-011000-
/O.CON.KILX.SV.W.0043.000000T0000Z-120401T1000Z/
MCLEAN IL-
433 AM CDT SUN APR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
MCLEAN COUNTY UNTIL 500 AM CDT...

AT 432 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR DANVERS...OR 11 MILES SOUTH OF EUREKA...MOVING
SOUTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  BLOOMINGTON...DANVERS...STANFORD AND SHIRLEY.

THIS INCLUDES INTERSTATE 55 BETWEEN MILE MARKERS 146 AND 162...AND 
INTERSTATE 74 BETWEEN MILE MARKERS 119 AND 141.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.

&&

LAT...LON 4059 8926 4059 8914 4042 8883 4029 8913
      4051 8927
TIME...MOT...LOC 0932Z 312DEG 21KT 4055 8918
WIND...HAIL <50MPH 1.00IN

$$
GEELHART

390 
WWUS53 KILX 010943
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
443 AM CDT SUN APR 1 2012

ILC113-011000-
/O.CON.KILX.SV.W.0043.000000T0000Z-120401T1000Z/
MCLEAN IL-
443 AM CDT SUN APR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL MCLEAN
COUNTY UNTIL 500 AM CDT...

AT 442 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR DANVERS...OR 8 MILES WEST OF BLOOMINGTON...
MOVING SOUTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  BLOOMINGTON AND SHIRLEY.

THIS INCLUDES INTERSTATE 55 BETWEEN MILE MARKERS 150 AND 162...AND 
INTERSTATE 74 BETWEEN MILE MARKERS 122 AND 141.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.

&&

LAT...LON 4049 8918 4052 8915 4057 8910 4042 8883
      4031 8907
TIME...MOT...LOC 0943Z 312DEG 21KT 4051 8912
WIND...HAIL <50MPH 1.00IN

$$
GEELHART

477 
WWUS53 KILX 010958
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
458 AM CDT SUN APR 1 2012

ILC113-011008-
/O.EXP.KILX.SV.W.0043.000000T0000Z-120401T1000Z/
MCLEAN IL-
458 AM CDT SUN APR 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MCLEAN COUNTY WILL
EXPIRE AT 500 AM CDT...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 6 AM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.

LAT...LON 4049 8918 4052 8915 4057 8910 4042 8883
      4031 8907
TIME...MOT...LOC 0958Z 312DEG 21KT 4045 8903

$$

GEELHART

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 1:06 AM CDT	Severe Thunderstorm Warning	ILX	Knox	54 min
Apr 1, 1:59 AM CDT	Severe Thunderstorm Warning	ILX	Knox	46 min
Apr 1, 2:20 AM CDT	Severe Thunderstorm Warning	ILX	Peoria, Stark	55 min
Apr 1, 2:42 AM CDT	Special Weather Statement	ILX	Tazewell	63 min
Apr 1, 2:48 AM CDT	Severe Thunderstorm Warning	ILX	Peoria, Tazewell	57 min
Apr 1, 3:15 AM CDT	Severe Thunderstorm Warning	ILX	Peoria, Woodford	30 min
Apr 1, 3:40 AM CDT	Severe Thunderstorm Warning	ILX	Tazewell, Woodford	39 min
Apr 1, 3:43 AM CDT	Severe Thunderstorm Warning	ILX	McLean, Tazewell	47 min
Apr 1, 8:23 AM CDT	Special Weather Statement	ILX	Vermilion	37 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2012 Every 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.