Alert archive / Illinois / Tornado Warnings in 2010

Tornado Warning 18, NWS St. Louis, MO

April 5, 2010Fayette County, Montgomery County, Illinois

NWS St. Louis, MO issued this tornado warning at Apr 5, 2010, 4:16 PM CDT for Fayette County, Montgomery County, Illinois. It was in force for 32 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: Apr 5, 2010, 4:16 PM CDT (21:16 UTC)
Expired: Apr 5, 2010, 4:48 PM CDT
In force: 32 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Fayette County, IL, Montgomery County, IL

The radar

The Lincoln radar (KILX), 104 km from the middle of the area, began a volume at 21:19 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
Apr 5, 2:51 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.3 hours before the alert went out and 120 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1087 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

559 
WFUS53 KLSX 052116
TORLSX
ILC051-135-052200-
/O.NEW.KLSX.TO.W.0018.100405T2116Z-100405T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
416 PM CDT MON APR 5 2010

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
  EAST CENTRAL MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 500 PM CDT

* AT 412 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A CONFIRMED TORNADO NEAR HILLSBORO. DOPPLER RADAR SHOWED THIS
  TORNADO MOVING NORTHEAST AT 25 MPH.

  AT 415 PM...A TORNADO WAS REPORTED ONE MILE SOUTH OF HILLSBORO.

* LOCATIONS IMPACTED INCLUDE...
  WITT...IRVING...CHAPMAN...FILLMORE...BINGHAM AND BAYLE CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3935 8915 3911 8914 3909 8952 3917 8956
TIME...MOT...LOC 2116Z 244DEG 23KT 3917 8942

$$

TES

2 follow-up statements

145 
WWUS53 KLSX 052138
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
438 PM CDT MON APR 5 2010

ILC051-135-052200-
/O.CON.KLSX.TO.W.0018.000000T0000Z-100405T2200Z/
MONTGOMERY IL-FAYETTE IL-
438 PM CDT MON APR 5 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN FAYETTE AND
EAST CENTRAL MONTGOMERY COUNTIES UNTIL 500 PM CDT...

AT 415 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A BRIEF TOUCHDOWN 
OF A TORNADO WITH THIS STORM.  THIS TORNADO HAS SINCE DISSIPATED BUT 
THE THREAT OF IT REFORMING CONTINUES. AT 437 PM...THIS STORM WAS 
LOCATED 6 MILES SOUTHEAST OF WITT...OR 7 MILES SOUTH OF 
NOKOMIS...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME EASTERN MONTGOMERY AND EXTREME
  NORTHWESTERN FAYETTE COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THOSE IN THE PATH OF THIS STORM...TAKE COVER IMMEDIATELY. 
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. 
AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO 
THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING 
DEBRIS.

&&

LAT...LON 3916 8929 3924 8931 3930 8915 3913 8914
TIME...MOT...LOC 2137Z 260DEG 40KT 3921 8920

$$

TES

432 
WWUS53 KLSX 052148
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
448 PM CDT MON APR 5 2010

ILC051-135-052158-
/O.CAN.KLSX.TO.W.0018.000000T0000Z-100405T2200Z/
MONTGOMERY IL-FAYETTE IL-
448 PM CDT MON APR 5 2010

...THE TORNADO WARNING FOR NORTHWESTERN FAYETTE AND EAST CENTRAL
MONTGOMERY COUNTIES IS CANCELLED...

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

LAT...LON 3916 8929 3924 8931 3930 8915 3913 8914
TIME...MOT...LOC 2148Z 244DEG 23KT 3926 8918

$$

TES

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 8:34 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	26 min
Apr 4, 8:55 PM CDT	Tornado Warning	LSX	Calhoun	35 min
Apr 4, 8:58 PM CDT	Severe Thunderstorm Warning	LSX	Pike	32 min
Apr 4, 9:22 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey	38 min
Apr 4, 9:38 PM CDT	Tornado Warning	LSX	Greene, Jersey	26 min
Apr 4, 9:50 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Pike	40 min
Apr 4, 9:55 PM CDT	Tornado Warning	LSX	Macoupin	35 min
Apr 4, 10:16 PM CDT	Tornado Warning	LSX	Greene, Macoupin	29 min
Apr 4, 10:30 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Macoupin, Montgomery	45 min
Apr 4, 10:35 PM CDT	Tornado Warning	LSX	Macoupin	40 min
Apr 4, 10:41 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun	34 min
Apr 4, 10:48 PM CDT	Tornado Warning	LSX	Macoupin, Montgomery	42 min
Apr 4, 11:13 PM CDT	Tornado Warning	LSX	Jersey, Macoupin	32 min
Apr 4, 11:29 PM CDT	Tornado Warning	LSX	Montgomery	46 min
Apr 4, 11:51 PM CDT	Tornado Warning	LSX	Fayette, Montgomery	39 min
Apr 4, 11:54 PM CDT	Severe Thunderstorm Warning	LSX	Madison	36 min
Apr 5, 12:30 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Pike	30 min
Apr 5, 2:50 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Madison, Montgomery	40 min
Apr 5, 3:28 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	47 min
Apr 5, 4:07 PM CDT	Areal Flood Advisory	LSX	Montgomery	4 hr

Nearby

Tornado Warnings in Illinois, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.