Alert archive / Illinois / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 4, NWS St. Louis, MO

February 20, 2014Bond County, Macoupin County, Madison County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Feb 20, 2014, 3:25 PM CST for Bond County, Macoupin County, Madison County, Illinois. It was in force for 50 min. 5 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: Feb 20, 2014, 3:25 PM CST (21:25 UTC)
Expired: Feb 20, 2014, 4:15 PM CST
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bond County, IL, Macoupin County, IL, Madison County, IL

The radar

The St Louis radar (KLSX), 80 km from the middle of the area, began a volume at 21:27 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
Feb 20, 3:40 PM CST	TSTM WND GST 60	Maryville, IL	DAMAGE TO SIDING REPORTED. GUSTS ESTIMATED IN EXCESS OF 60 MPH
Feb 20, 4:00 PM CST	TSTM WND DMG	1 Ese Highland, IL	SIDING BLOWN OFF HOUSES...ESTIMATED WINDS OVER 60 MPH
Feb 20, 4:00 PM CST	TSTM WND DMG	Highland, IL	SIDING AND SHINGLES BLOWN OFF OF HOMES...SMALL TREES ALSO BLOWN DOWN.
Feb 20, 4:00 PM CST	TSTM WND GST 60	3 S Highland, IL
Feb 20, 4:20 PM CST	NON-TSTM WND GST 60	Maryville, IL	DAMAGE TO SIDING REPORTED. GUSTS ESTIMATED IN EXCESS OF 60 MPH

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Feb 20, 1:36 PM CST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.4 hours before the alert went out and 176 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: 507 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 582 m²/s²
0-3 km storm-relative helicity: 576 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.

760 
WUUS53 KLSX 202125
SVRLSX
ILC005-117-119-202215-
/O.NEW.KLSX.SV.W.0004.140220T2125Z-140220T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
325 PM CST THU FEB 20 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
  EXTREME SOUTHEASTERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS...
  MADISON COUNTY IN SOUTHWEST ILLINOIS...

* UNTIL 415 PM CST

* AT 323 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM BUNKER HILL TO PONTOON BEACH...AND MOVING NORTHEAST
  AT 65 MPH.

  HAZARD...60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  EDWARDSVILLE...TROY...STAUNTON...HIGHLAND...PRAIRIETOWN...
  CARPENTER...ST. JACOB...WORDEN...MARINE...LIVINGSTON...ALHAMBRA...
  KUHN...FRUIT...HAMEL...KAUFMAN...WILLIAMSON...GRANTFORK...NEW
  DOUGLAS AND SHILOH HILL.

THIS WARNING INCLUDES HORSESHOE LAKE STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN ILLINOIS FROM EXIT 21 TO EXIT 30.
INTERSTATE 55 IN ILLINOIS FROM EXIT 23 TO EXIT 37.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3867 8963 3866 8999 3866 9015 3901 9005
      3902 8970 3900 8970 3900 8959 3902 8958
TIME...MOT...LOC 2125Z 235DEG 55KT 3906 8993 3877 9001

HAIL...<.75IN
WIND...60MPH

$$

KANOFSKY

4 follow-up statements

881 
WWUS53 KLSX 202150
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
350 PM CST THU FEB 20 2014

ILC005-117-119-202215-
/O.CON.KLSX.SV.W.0004.000000T0000Z-140220T2215Z/
MACOUPIN IL-MADISON IL-BOND IL-
350 PM CST THU FEB 20 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
BOND...MADISON AND EXTREME SOUTHEASTERN MACOUPIN COUNTIES UNTIL 415
PM CST...

AT 349 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM SORENTO TO ST. JACOB...AND MOVING NORTHEAST AT 55 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
HIGHLAND AND SHILOH HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 3867 8963 3866 8999 3866 9015 3901 9005
      3902 8970 3900 8970 3900 8959 3902 8958
TIME...MOT...LOC 2151Z 242DEG 48KT 3900 8960 3871 8970

HAIL...1.00IN
WIND...60MPH

$$

BRITT

714 
WWUS53 KLSX 202200
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
400 PM CST THU FEB 20 2014

ILC117-202210-
/O.CAN.KLSX.SV.W.0004.000000T0000Z-140220T2215Z/
MACOUPIN IL-
400 PM CST THU FEB 20 2014

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHEASTERN MACOUPIN
COUNTY IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

LAT...LON 3867 8963 3866 8990 3900 8964 3900 8959
      3902 8958
TIME...MOT...LOC 2200Z 242DEG 48KT 3881 8958 3871 8968

$$

ILC005-119-202215-
/O.CON.KLSX.SV.W.0004.000000T0000Z-140220T2215Z/
MADISON IL-BOND IL-
400 PM CST THU FEB 20 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
BOND AND EASTERN MADISON COUNTIES UNTIL 415 PM CST...

AT 356 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HIGHLAND TO ST. JACOB...AND MOVING NORTHEAST AT 55
MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
SHILOH HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 3867 8963 3866 8990 3900 8964 3900 8959
      3902 8958
TIME...MOT...LOC 2200Z 242DEG 48KT 3881 8958 3871 8968

HAIL...0.75IN
WIND...60MPH

$$

BRITT

306 
WWUS53 KLSX 202206
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
406 PM CST THU FEB 20 2014

ILC117-202210-
/O.CAN.KLSX.SV.W.0004.000000T0000Z-140220T2215Z/
MACOUPIN IL-
406 PM CST THU FEB 20 2014

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHEASTERN MACOUPIN
COUNTY IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

LAT...LON 3867 8963 3866 8990 3900 8964 3900 8959
      3902 8958
TIME...MOT...LOC 2200Z 242DEG 48KT 3881 8958 3871 8968

$$

ILC005-119-202215-
/O.CON.KLSX.SV.W.0004.000000T0000Z-140220T2215Z/
MADISON IL-BOND IL-
406 PM CST THU FEB 20 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
BOND AND EASTERN MADISON COUNTIES UNTIL 415 PM CST...

AT 356 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HIGHLAND TO ST. JACOB...AND MOVING NORTHEAST AT 55
MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
SHILOH HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 3867 8963 3866 8990 3900 8964 3900 8959
      3902 8958
TIME...MOT...LOC 2200Z 242DEG 48KT 3881 8958 3871 8968

HAIL...0.75IN
WIND...60MPH

$$

BRITT

004 
WWUS53 KLSX 202218
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
418 PM CST THU FEB 20 2014

ILC005-119-202227-
/O.EXP.KLSX.SV.W.0004.000000T0000Z-140220T2215Z/
MADISON IL-BOND IL-
418 PM CST THU FEB 20 2014

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL BOND AND EASTERN
MADISON COUNTIES HAS EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.  A NEW SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR 
BOND COUNTY UNTIL 445 PM.

LAT...LON 3867 8963 3866 8990 3900 8964 3900 8959
      3902 8958
TIME...MOT...LOC 2206Z 242DEG 48KT 3885 8949 3875 8959

$$

BRITT

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 20, 4:22 AM CST	Wind Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	20 hr
Feb 20, 1:44 PM CST	Severe Thunderstorm Warning	LSX	Adams, Pike	46 min
Feb 20, 2:25 PM CST	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	35 min
Feb 20, 2:58 PM CST	Severe Thunderstorm Warning	LSX	Greene, Jersey, Macoupin, Montgomery	47 min
Feb 20, 3:42 PM CST	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	48 min
Feb 20, 3:55 PM CST	Severe Thunderstorm Warning	LSX	Bond, Fayette	50 min
Feb 20, 4:01 PM CST	Severe Thunderstorm Warning	LSX	Clinton, Madison, Saint Clair	44 min
Feb 20, 4:10 PM CST	Tornado Warning	LSX	Fayette, Montgomery	20 min
Feb 20, 4:23 PM CST	Severe Thunderstorm Warning	LSX	Fayette	52 min
Feb 20, 4:35 PM CST	Severe Thunderstorm Warning	LSX	Clinton, Marion, Randolph, Washington	40 min
Feb 20, 4:40 PM CST	Tornado Warning	LSX	Fayette	35 min
Feb 20, 5:09 PM CST	Severe Thunderstorm Warning	LSX	Clinton, Fayette, Marion, Washington	51 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2014 Every severe thunderstorm warning in 2014

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.