Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 11, NWS Lincoln, IL

March 14, 2012Crawford County, Lawrence County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Mar 14, 2012, 6:22 PM CDT for Crawford County, Lawrence County, Illinois. It was in force for 38 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: Mar 14, 2012, 6:22 PM CDT (23:22 UTC)
Expired: Mar 14, 2012, 7:00 PM CDT
In force: 38 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Crawford County, IL, Lawrence County, IL

The radar

The Evansville,IN radar (KVWX), 64 km from the middle of the area, began a volume at 23:21 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
Mar 14, 6:24 PM CDT	HAIL 1	2 S Birds, IL	SWOP REPORT.

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, 11.4 hours before the alert went out and 172 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: 1113 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 934 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: -24 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.

507 
WUUS53 KILX 142322
SVRILX
ILC033-101-150000-
/O.NEW.KILX.SV.W.0011.120314T2322Z-120315T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
622 PM CDT WED MAR 14 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CRAWFORD COUNTY IN EAST CENTRAL ILLINOIS...
  NORTHEASTERN LAWRENCE COUNTY IN SOUTHEAST ILLINOIS...

* UNTIL 700 PM CDT.

* AT 620 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LAWRENCEVILLE...AND MOVING NORTHEAST AT 20 MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3874 8750 3871 8775 3876 8780 3896 8753
      3890 8752 3889 8754 3886 8754 3885 8751
      3882 8752 3880 8751
TIME...MOT...LOC 2322Z 245DEG 18KT 3877 8770
WIND...HAIL 60MPH 1.00IN

$$

MILLER

2 follow-up statements

477 
WWUS53 KILX 142340
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
640 PM CDT WED MAR 14 2012

ILC033-101-150000-
/O.CON.KILX.SV.W.0011.000000T0000Z-120315T0000Z/
LAWRENCE IL-CRAWFORD IL-
640 PM CDT WED MAR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
CRAWFORD AND NORTHEASTERN LAWRENCE COUNTIES UNTIL 700 PM CDT...

AT 637 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND 
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR THE 
LAWRENCEVILLE AIRPORT...MOVING NORTHEAST AT 20 MPH.

TRAINED STORM SPOTTERS REPORTED ONE INCH HAIL WITH THIS STORM 
2 MILES SOUTH OF BIRDS AT 624 PM CDT.

LOCATIONS IMPACTED INCLUDE...
  RUSSELLVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS IF YOU ARE IN
THE PATH OF THIS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3874 8750 3873 8766 3878 8769 3893 8754
      3890 8752 3889 8754 3886 8754 3885 8751
      3882 8752 3880 8751
TIME...MOT...LOC 2337Z 244DEG 17KT 3879 8762
WIND...HAIL 60MPH 1.00IN

$$

MILLER

587 
WWUS53 KILX 142352
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
652 PM CDT WED MAR 14 2012

ILC033-101-150002-
/O.EXP.KILX.SV.W.0011.000000T0000Z-120315T0000Z/
LAWRENCE IL-CRAWFORD IL-
652 PM CDT WED MAR 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CRAWFORD AND
NORTHEASTERN LAWRENCE COUNTIES WILL EXPIRE AT 700 PM CDT...

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

LAT...LON 3874 8750 3873 8766 3878 8769 3893 8754
      3890 8752 3889 8754 3886 8754 3885 8751
      3882 8752 3880 8751
TIME...MOT...LOC 2352Z 244DEG 17KT 3882 8754

$$

MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 14, 6:02 PM CDT	Special Weather Statement	ILX	Lawrence	43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.