Alert archive / Illinois / Tornado Warnings in 2010

Tornado Warning 47, NWS St. Louis, MO

June 15, 20104 counties in Illinois

NWS St. Louis, MO issued this tornado warning at Jun 15, 2010, 2:40 PM CDT for 4 counties in Illinois. It was in force for 50 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: Jun 15, 2010, 2:40 PM CDT (19:40 UTC)
Expired: Jun 15, 2010, 3:30 PM CDT
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Bond County, IL, Clinton County, IL, Madison County, IL, Saint Clair County, IL

The radar

The St Louis radar (KLSX), 95 km from the middle of the area, began a volume at 19:43 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
Jun 15, 12:29 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.7 hours before the alert went out and 185 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: 630 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

826 
WFUS53 KLSX 151940
TORLSX
ILC005-027-119-163-152030-
/O.NEW.KLSX.TO.W.0047.100615T1940Z-100615T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
240 PM CDT TUE JUN 15 2010

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
  NORTHWESTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHEASTERN MADISON COUNTY IN SOUTHWEST ILLINOIS...
  NORTHEASTERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...

* UNTIL 330 PM CDT

* AT 238 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR LEBANON...AND MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BREESE...TRENTON...AVISTON...ST. ROSE...JAMESTOWN...BECKEMEYER AND
  STOLLETOWN.

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 3880 8949 3867 8940 3860 8939 3853 8987
      3865 8992
TIME...MOT...LOC 1941Z 251DEG 42KT 3861 8977

$$

BYRD

1 follow-up statement

175 
WWUS53 KLSX 152020
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
320 PM CDT TUE JUN 15 2010

ILC005-027-119-163-152030-
/O.EXP.KLSX.TO.W.0047.000000T0000Z-100615T2030Z/
ST. CLAIR IL-CLINTON IL-MADISON IL-BOND IL-
320 PM CDT TUE JUN 15 2010

...THE TORNADO WARNING FOR SOUTH CENTRAL BOND...SOUTHEASTERN
MADISON...NORTHWESTERN CLINTON AND NORTHEASTERN ST. CLAIR COUNTIES
WILL EXPIRE AT 330 PM CDT...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM.

LAT...LON 3880 8949 3867 8940 3860 8939 3853 8987
      3865 8992
TIME...MOT...LOC 2020Z 251DEG 42KT 3876 8922

$$

BYRD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 1:00 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Madison, Saint Clair	45 min
Jun 15, 1:33 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison	42 min
Jun 15, 1:49 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette	41 min
Jun 15, 1:53 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Marion	52 min
Jun 15, 2:12 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Monroe, Saint Clair	48 min
Jun 15, 2:14 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Madison, Montgomery	46 min
Jun 15, 2:19 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	41 min
Jun 15, 2:27 PM CDT	Severe Thunderstorm Warning	LSX	Fayette	33 min
Jun 15, 2:30 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison, Monroe, Saint Clair, Washington	45 min
Jun 15, 2:31 PM CDT	Flash Flood Warning	LSX	Bond, Clinton, Madison, Saint Clair	6 hr
Jun 15, 2:36 PM CDT	Tornado Warning	LSX	Bond, Fayette, Montgomery	23 min
Jun 15, 2:41 PM CDT	Severe Thunderstorm Warning	LSX	Washington	34 min
Jun 15, 2:48 PM CDT	Severe Thunderstorm Warning	LSX	Fayette, Marion	27 min
Jun 15, 3:06 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Marion	39 min
Jun 15, 3:12 PM CDT	Flash Flood Warning	LSX	Clinton, Fayette, Marion	6 hr
Jun 15, 3:15 PM CDT	Severe Thunderstorm Warning	LSX	Washington	15 min

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.