Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 80, NWS Lincoln, IL

July 4, 2012Lawrence County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 4, 2012, 5:12 PM CDT for Lawrence County, Illinois. It was in force for 48 min. 3 reports 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: Jul 4, 2012, 5:12 PM CDT (22:12 UTC)
Expired: Jul 4, 2012, 6:00 PM CDT
In force: 48 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Lawrence County, IL

The radar

The Evansville,IN radar (KVWX), 60 km from the middle of the area, began a volume at 22:12 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

Time	Report	Where	Remark
Jul 4, 5:31 PM CDT	TSTM WND GST 67	2 E Birds, IL
Jul 4, 5:31 PM CDT	HAIL 1	2 E Birds, IL
Jul 4, 5:35 PM CDT	TSTM WND DMG	3 E Birds, IL	3 FOOT DIAMETER TREE DOWN ACROSS 1600E...1.5 MI SOUTH OF 1800N.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.2 hours before the alert went out and 177 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: 2111 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 1462 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: -12 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.

128 
WUUS53 KILX 042212
SVRILX
ILC101-042300-
/O.NEW.KILX.SV.W.0080.120704T2212Z-120704T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
512 PM CDT WED JUL 4 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LAWRENCE COUNTY IN SOUTHEAST ILLINOIS...

* UNTIL 600 PM CDT.

* AT 502 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR RUSSELLVILLE...OR 8 MILES NORTHEAST OF
  LAWRENCEVILLE...AND MOVING SOUTH AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LAWRENCEVILLE...PINKSTAFF AND LAWRENCEVILLE AIRPORT.

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 3869 8752 3870 8771 3885 8772 3885 8755
      3886 8753 3885 8752 3882 8752 3879 8749
      3876 8750 3874 8749
TIME...MOT...LOC 2212Z 009DEG 4KT 3881 8760
WIND...HAIL <50MPH 1.00IN

$$

HJS

3 follow-up statements

891 
WWUS53 KILX 042235
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
535 PM CDT WED JUL 4 2012

ILC101-042300-
/O.CON.KILX.SV.W.0080.000000T0000Z-120704T2300Z/
LAWRENCE IL-
535 PM CDT WED JUL 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
LAWRENCE COUNTY UNTIL 600 PM CDT...

AT 531 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING QUARTER SIZE HAIL...AND DESTRUCTIVE WINDS IN 
EXCESS OF 70 MPH 2 MILES EAST OF BIRDS.  THIS STORM WAS LOCATED NEAR 
RUSSELLVILLE...OR 6 MILES NORTHEAST OF LAWRENCEVILLE...MOVING SOUTH 
AT 5 MPH.

LOCATIONS IMPACTED INCLUDE...
  LAWRENCEVILLE AND LAWRENCEVILLE AIRPORT.

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 3869 8752 3870 8771 3885 8772 3885 8755
      3886 8753 3885 8752 3882 8752 3879 8749
      3876 8750 3874 8749
TIME...MOT...LOC 2235Z 009DEG 4KT 3878 8761
WIND...HAIL 70MPH 1.00IN

$$

121 
WWUS53 KILX 042245
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
545 PM CDT WED JUL 4 2012

ILC101-042300-
/O.CON.KILX.SV.W.0080.000000T0000Z-120704T2300Z/
LAWRENCE IL-
545 PM CDT WED JUL 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
LAWRENCE COUNTY UNTIL 600 PM CDT...

AT 541 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING QUARTER SIZE HAIL...AND DESTRUCTIVE WINDS IN
EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 5 MILES NORTHEAST OF
LAWRENCEVILLE...MOVING SOUTH AT 5 MPH.

LOCATIONS IMPACTED INCLUDE...
  LAWRENCEVILLE AND LAWRENCEVILLE AIRPORT.

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 3869 8752 3870 8771 3885 8772 3885 8755
      3886 8753 3885 8752 3882 8752 3879 8749
      3876 8750 3874 8749
TIME...MOT...LOC 2245Z 009DEG 4KT 3877 8761
WIND...HAIL 70MPH 1.00IN

$$

HJS

059 
WWUS53 KILX 042303
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
603 PM CDT WED JUL 4 2012

ILC101-042313-
/O.EXP.KILX.SV.W.0080.000000T0000Z-120704T2300Z/
LAWRENCE IL-
603 PM CDT WED JUL 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LAWRENCE COUNTY
HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE WARNED 
AREA.

LAT...LON 3869 8752 3870 8771 3885 8772 3885 8755
      3886 8753 3885 8752 3882 8752 3879 8749
      3876 8750 3874 8749
TIME...MOT...LOC 2245Z 009DEG 4KT 3877 8761

$$

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.