Alert archive / Illinois / Tornado Warnings in 2006

Tornado Warning 61, NWS St. Louis, MO

March 13, 2006Calhoun County, Illinois

NWS St. Louis, MO issued this tornado warning at Mar 13, 2006, 1:52 AM CST for Calhoun County, Illinois. It was in force for 38 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, 1:52 AM CST (07:52 UTC)
Expired: Mar 13, 2006, 2:30 AM CST
In force: 38 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), 49 km from the middle of the area, began a volume at 07:56 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 12, 8:42 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 7.9 hours before the alert went out and 211 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 
WFUS53 KLSX 130752
TORLSX
ILC013-130830-
/O.NEW.KLSX.TO.W.0061.060313T0752Z-060313T0830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
152 AM CST MON MAR 13 2006

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 230 AM CST

* AT 151 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 7 MILES WEST OF HARDIN...
  MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HARDIN...
  HAMBURG

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 AM CST MONDAY MORNING FOR
SOUTHWESTERN ILLINOIS AND SOUTHEASTERN MISSOURI. A TORNADO WATCH ALSO
REMAINS IN EFFECT UNTIL 400 AM CST MONDAY MORNING FOR SOUTHWESTERN
ILLINOIS AND NORTHEASTERN MISSOURI.

LAT...LON 3921 9081 3905 9076 3889 9060 3893 9050
      3909 9059 3939 9064 3938 9080

$$

GKS

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, 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
Mar 13, 4:27 AM CST	Severe Thunderstorm Warning	LSX	Washington	48 min

Nearby

Tornado Warnings in Illinois, 2006 Every tornado warning in 2006 Tornadoes 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.