Alert archive / Illinois / Tornado Warnings in 2008

Tornado Warning 71, NWS St. Louis, MO

July 8, 2008Macoupin County, Montgomery County, Illinois

NWS St. Louis, MO issued this tornado warning at Jul 8, 2008, 5:00 PM CDT for Macoupin County, Montgomery County, Illinois. It was in force for 35 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: Jul 8, 2008, 5:00 PM CDT (22:00 UTC)
Expired: Jul 8, 2008, 5:35 PM CDT
In force: 35 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Macoupin County, IL, Montgomery County, IL

The radar

The Lincoln radar (KILX), 92 km from the middle of the area, began a volume at 22:02 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
Jul 8, 1:54 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.0 hours before the alert went out and 125 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: 1492 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 748 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 082200
TORLSX
ILC117-135-082245-
/O.NEW.KLSX.TO.W.0071.080708T2200Z-080708T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
500 PM CDT TUE JUL 8 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS
  NORTHERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 545 PM CDT

* AT 458 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 4 MILES SOUTH OF
  PALMYRA...OR ABOUT 9 MILES NORTHWEST OF CARLINVILLE...MOVING EAST
  AT 43 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GIRARD...
  FARMERSVILLE...
  RAYMOND...

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.

LAT...LON 3924 8939 3933 9008 3947 9009 3948 8953
      3936 8953 3935 8939
TIME...MOT...LOC 2200Z 270DEG 38KT 3937 8998

$$

CARNEY

1 follow-up statement

000 
WWUS53 KLSX 082235
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
535 PM CDT TUE JUL 8 2008

ILC117-135-082245-
/O.CAN.KLSX.TO.W.0071.000000T0000Z-080708T2245Z/
MONTGOMERY IL-MACOUPIN IL-
535 PM CDT TUE JUL 8 2008

...THE TORNADO WARNING FOR NORTHERN MACOUPIN AND NORTHWESTERN
MONTGOMERY COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING NO LONGER APPEARS TO BE 
TORNADIC...HOWEVER IT IS STILL CAPABLE OF PRODUCING DAMAGING WINDS 
AND LARGE HAIL...AND A SEVERE THUNDERSTORM WATCH IS STILL IN EFFECT.

LAT...LON 3924 8939 3933 9008 3947 9009 3948 8953
      3936 8953 3935 8939
TIME...MOT...LOC 2235Z 270DEG 38KT 3937 8950

$$

CARNEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 1:45 PM CDT	Flash Flood Watch	LSX	Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 9 more	14 hr
Jul 8, 2:45 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	45 min
Jul 8, 3:19 PM CDT	Tornado Warning	LSX	Brown	26 min
Jul 8, 3:28 PM CDT	Areal Flood Advisory	LSX	Adams	4 hr
Jul 8, 3:29 PM CDT	Tornado Warning	LSX	Pike	46 min
Jul 8, 4:31 PM CDT	Areal Flood Advisory	LSX	Macoupin, Montgomery	3 days
Jul 8, 4:36 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Macoupin, Montgomery	39 min
Jul 8, 5:20 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Jersey, Macoupin, Madison, Montgomery	55 min
Jul 8, 5:34 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	41 min

Nearby

Tornado Warnings in Illinois, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.