Alert archive / Illinois / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 113, NWS St. Louis, MO

March 13, 2006Washington County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 13, 2006, 4:27 AM CST for Washington County, Illinois. It was in force for 48 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 13, 2006, 4:27 AM CST (10:27 UTC)
Expired: Mar 13, 2006, 5:15 AM CST
In force: 48 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Washington County, IL

The radar

The St Louis radar (KLSX), 112 km from the middle of the area, began a volume at 10:27 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.

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 13, 1:06 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 10.5 hours before the alert went out and 212 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: 730 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 286 m²/s²
0-3 km storm-relative helicity: 322 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLSX 131028
SVRLSX
ILC189-131115-
/O.NEW.KLSX.SV.W.0113.060313T1027Z-060313T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
427 AM CST MON MAR 13 2006

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS

* UNTIL 515 AM CST

* AT 422 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR LIVELY GROVE...OR
  ABOUT 11 MILES NORTH OF SPARTA...AND MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NASHVILLE...
  IRVINGTON...
  OAKDALE...
  CORDES...
  ADDIEVILLE... 

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
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.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 3838 8976 3822 8966 3821 8915 3849 8914
      3853 8934

$$

GKS

1 follow-up statement

000 
WWUS53 KLSX 131116
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
516 AM CST MON MAR 13 2006

ILC189-131126-
/O.EXP.KLSX.SV.W.0113.000000T0000Z-060313T1115Z/
WASHINGTON IL-
516 AM CST MON MAR 13 2006

...THE SEVERE THUNDERSTORM WARNING FOR WASHINGTON COUNTY HAS
EXPIRED...

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

ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A TORNADO WATCH 
REMAINS IN EFFECT UNTIL 1100 AM CST.

LAT...LON 3838 8976 3822 8966 3821 8915 3849 8914
      3853 8934

$$
CARNEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 12, 6:12 PM CST	Tornado Warning	LSX	Pike	63 min
Mar 12, 6:41 PM CST	Tornado Warning	LSX	Calhoun	26 min
Mar 12, 7:05 PM CST	Tornado Warning	LSX	Greene	37 min
Mar 12, 10:35 PM CST	Tornado Warning	LSX	Adams	40 min
Mar 12, 11:21 PM CST	Tornado Warning	LSX	Adams, Brown	39 min
Mar 13, 12:26 AM CST	Tornado Warning	LSX	Calhoun	40 min
Mar 13, 12:52 AM CST	Tornado Warning	LSX	Greene	38 min
Mar 13, 1:24 AM CST	Tornado Warning	LSX	Macoupin	14 min
Mar 13, 1:52 AM CST	Tornado Warning	LSX	Calhoun	38 min
Mar 13, 2:01 AM CST	Tornado Warning	LSX	Greene	44 min
Mar 13, 2:31 AM CST	Severe Thunderstorm Warning	LSX	Macoupin	44 min
Mar 13, 2:56 AM CST	Severe Thunderstorm Warning	LSX	Montgomery	49 min
Mar 13, 3:02 AM CST	Severe Thunderstorm Warning	LSX	Madison	43 min
Mar 13, 3:35 AM CST	Severe Thunderstorm Warning	LSX	Bond	40 min
Mar 13, 4:01 AM CST	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	33 min
Mar 13, 4:04 AM CST	Tornado Warning	LSX	Randolph	35 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2006 Every severe thunderstorm warning in 2006

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.