Alert archive / Illinois / Tornado Warnings in 2010

Tornado Warning 65, NWS St. Louis, MO

October 26, 2010Brown County, Illinois

NWS St. Louis, MO issued this tornado warning at Oct 26, 2010, 1:56 AM CDT for Brown County, Illinois. It was in force for 19 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: Oct 26, 2010, 1:56 AM CDT (06:56 UTC)
Expired: Oct 26, 2010, 2:15 AM CDT
In force: 19 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

County Brown County, IL

The watch it was issued in

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

Issued	Product	Office	Lasted
Oct 25, 10:03 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 6.9 hours before the alert went out and 180 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: 158 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 357 m²/s²
0-3 km storm-relative helicity: 405 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

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

844 
WFUS53 KLSX 260656
TORLSX
ILC009-260715-
/O.NEW.KLSX.TO.W.0065.101026T0656Z-101026T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
156 AM CDT TUE OCT 26 2010

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN BROWN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 215 AM CDT

* AT 153 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR MOUNT STERLING...OR 13 MILES SOUTHWEST OF
  RUSHVILLE...AND MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RIPLEY.

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 4007 9067 4005 9068 4003 9061 4001 9061
      3999 9060 3999 9051 3997 9051 3986 9065
      3998 9082 4008 9071
TIME...MOT...LOC 0657Z 219DEG 45KT 4000 9065

$$

BRITT

1 follow-up statement

745 
WWUS53 KLSX 260711
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
211 AM CDT TUE OCT 26 2010

ILC009-260721-
/O.EXP.KLSX.TO.W.0065.000000T0000Z-101026T0715Z/
BROWN IL-
211 AM CDT TUE OCT 26 2010

...THE TORNADO WARNING FOR EASTERN BROWN COUNTY WILL EXPIRE AT 215 AM
CDT...

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

ADDITIONAL SEVERE THUNDERSTORMS ARE POSSIBLE THE REST OF THE 
NIGHT...AND A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT.

LAT...LON 4007 9067 4005 9068 4003 9061 4001 9061
      3999 9060 3999 9051 3997 9051 3986 9065
      3998 9082 4008 9071
TIME...MOT...LOC 0711Z 219DEG 45KT 4014 9051

$$

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 26, 12:56 AM CDT	Severe Thunderstorm Warning	LSX	Adams	31 min
Oct 26, 1:13 AM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	47 min
Oct 26, 1:19 AM CDT	Tornado Warning	LSX	Adams, Brown, Pike	41 min
Oct 26, 1:39 AM CDT	Severe Thunderstorm Warning	LSX	Adams	51 min
Oct 26, 3:34 AM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey	41 min
Oct 26, 3:34 AM CDT	Tornado Warning	LSX	Calhoun, Greene, Jersey, Pike	41 min
Oct 26, 4:09 AM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey, Macoupin, Madison, Monroe, Randolph and 1 more	66 min
Oct 26, 4:33 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Macoupin, Madison, Marion and 2 more	57 min
Oct 26, 4:44 AM CDT	Tornado Warning	LSX	Saint Clair	23 min
Oct 26, 5:15 AM CDT	Tornado Warning	LSX	Bond, Clinton, Fayette, Montgomery	30 min
Oct 26, 5:19 AM CDT	Severe Thunderstorm Warning	LSX	Randolph	23 min
Oct 26, 5:30 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Marion, Montgomery, Washington	45 min
Oct 26, 5:54 AM CDT	Tornado Warning	LSX	Fayette	21 min
Oct 26, 6:03 AM CDT	Tornado Warning	LSX	Marion	17 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.