Alert archive / Illinois / Tornado Warnings in 2006

Tornado Warning 38, NWS St. Louis, MO

March 12, 2006Calhoun County, Illinois

NWS St. Louis, MO issued this tornado warning at Mar 12, 2006, 6:41 PM CST for Calhoun County, Illinois. It was in force for 26 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 12, 2006, 6:41 PM CST (00:41 UTC)
Expired
Mar 12, 2006, 7:07 PM CST
In force
26 min
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

County Calhoun County, IL

The radar

The St Louis radar (KLSX), 71 km from the middle of the area, began a volume at 00:44 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

TimeReportWhereRemark
Mar 12, 7:05 PM CSTTSTM WND DMG1 W Belleview, ILALONG HIGHWAY 96...TREES DOWN AROUND THE AREA.

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.

IssuedProductOfficeLasted
Mar 12, 11:49 AM CSTTornado WatchSPC10 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 207 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2006-03-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 730 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2006-03-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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 
WFUS53 KLSX 130042
TORLSX
ILC013-130130-
/O.NEW.KLSX.TO.W.0038.060313T0041Z-060313T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
641 PM CST SUN MAR 12 2006

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CALHOUN COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 730 PM CST

* AT 639 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 20 MILES WEST OF
  BELLEVIEW...MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BELLEVIEW...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF 
BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

LAT...LON 3940 9093 3923 9073 3922 9060 3940 9065

$$
GLASS
1 follow-up statement
000 
WWUS53 KLSX 130107
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
707 PM CST SUN MAR 12 2006

ILC013-130117-
/O.CAN.KLSX.TO.W.0038.000000T0000Z-060313T0130Z/
CALHOUN IL-
707 PM CST SUN MAR 12 2006

...THE TORNADO WARNING FOR NORTHWESTERN CALHOUN COUNTY IS
CANCELLED...

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

LAT...LON 3940 9093 3923 9073 3922 9060 3940 9065

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 6:12 PM CSTTornado WarningLSXPike63 min
Mar 12, 7:05 PM CSTTornado WarningLSXGreene37 min
Mar 12, 10:35 PM CSTTornado WarningLSXAdams40 min
Mar 12, 11:21 PM CSTTornado WarningLSXAdams, Brown39 min
Mar 13, 12:26 AM CSTTornado WarningLSXCalhoun40 min
Mar 13, 12:52 AM CSTTornado WarningLSXGreene38 min
Mar 13, 1:24 AM CSTTornado WarningLSXMacoupin14 min
Mar 13, 1:52 AM CSTTornado WarningLSXCalhoun38 min
Mar 13, 2:01 AM CSTTornado WarningLSXGreene44 min
Mar 13, 2:31 AM CSTSevere Thunderstorm WarningLSXMacoupin44 min
Mar 13, 2:56 AM CSTSevere Thunderstorm WarningLSXMontgomery49 min
Mar 13, 3:02 AM CSTSevere Thunderstorm WarningLSXMadison43 min
Mar 13, 3:35 AM CSTSevere Thunderstorm WarningLSXBond40 min
Mar 13, 4:01 AM CSTSevere Thunderstorm WarningLSXMonroe, Saint Clair33 min
Mar 13, 4:04 AM CSTTornado WarningLSXRandolph35 min
Mar 13, 4:27 AM CSTSevere Thunderstorm WarningLSXWashington48 min

Nearby

Tornado Warnings in Illinois, 2006Every tornado warning in 2006Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.