Alert archive / Illinois / Tornado Warnings in 2001

Tornado Warning 8, NWS St. Louis, MO

April 10, 2001Bond County, Fayette County, Illinois

NWS St. Louis, MO issued this tornado warning at Apr 10, 2001, 11:00 PM CDT for Bond County, Fayette County, Illinois. It was in force for 45 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Apr 10, 2001, 11:00 PM CDT (04:00 UTC)
Expired: Apr 10, 2001, 11:45 PM CDT
In force: 45 min
Issued by: NWS St. Louis, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Bond County, IL, Fayette County, IL

The radar

The Lincoln radar (KILX), 126 km from the middle of the area, began a volume at 04:01 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
Apr 10, 11:05 PM CDT	Thunderstorm Wind 52 E	Greenville, IL	The County Sheriff reported several trees down on the south side of Interstate 70.
Apr 10, 11:30 PM CDT	Hail 1	Vandalia, IL	One inch hail was reported in the west side of Vandalia.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 10, 7:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 4.0 hours before the alert went out and 135 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: 314 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 110402
TORSTL
ILC005-051-110445-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1100 PM CDT TUE APR 10 2001

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN BOND COUNTY IN SOUTH CENTRAL ILLINOIS
  FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS

* UNTIL 1145 PM CDT

* AT 1100 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH STRONG ROTATION 3 MILES EAST OF GREENVILLE
  MOVING EAST AT 40 MPH.  A TORNADO MAY OCCUR AT ANY TIME.  TAKE
  SHELTER NOW!

* LOCATIONS IN THE PATH...
  HAGERSTOWN
  SHOBONIER
  VANDALIA
  BROWNSTOWN
  AVENA
  LOOGOOTEE
  ST. ELMO
  ST. JAMES
  WRIGHTS CORNER
  MULBBERY GROVE

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW! A BASEMENT
OFFERS THE BEST PROTECTION. IF A BASEMENT IS NOT AVAILABLE...MOVE TO
THE LOWEST FLOOR AND SEEK SHELTER IN A SMALL INTERIOR ROOM. STAY AWAY
FROM OUTSIDE WALLS AND WINDOWS. MOBILE HOMES SHOULD BE ABANDONED IN
FAVOR OF A MORE SUBSTANTIAL STRUCTURE. DO NOT TRY TO OUTRUN A TORNADO
IN A VEHICLE.

LAT...LON 3902 8942 3875 8942 3892 8880 3922 8881
          3921 8925 3903 8926W

GKS/RP

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 9:08 PM CDT	Tornado Warning	LSX	Madison	67 min
Apr 10, 10:14 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Madison	61 min

Nearby

Tornado Warnings in Illinois, 2001 Every tornado warning in 2001 Tornadoes in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.