Alert archive / Illinois / Tornado Warnings in 2011

Tornado Warning 9, NWS Paducah, KY

February 28, 2011Franklin County, Jefferson County, Perry County, Illinois

NWS Paducah, KY issued this tornado warning at Feb 28, 2011, 12:38 AM CST for Franklin County, Jefferson County, Perry County, Illinois. It was in force for 37 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: Feb 28, 2011, 12:38 AM CST (06:38 UTC)
Expired: Feb 28, 2011, 1:15 AM CST
In force: 37 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon

Counties Franklin County, IL, Jefferson County, IL, Perry County, IL

The radar

The Evansville,IN radar (KVWX), 111 km from the middle of the area, began a volume at 06:41 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
Feb 27, 9:40 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.6 hours before the alert went out and 224 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: 124 J/kg
Mixed-layer CIN: -220 J/kg
Mixed-layer LCL: 494 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

410 
WFUS53 KPAH 280638
TORPAH
ILC055-081-145-280715-
/O.NEW.KPAH.TO.W.0009.110228T0638Z-110228T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
1238 AM CST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN FRANKLIN COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHERN JEFFERSON COUNTY IN SOUTH CENTRAL ILLINOIS...
  NORTHEASTERN PERRY COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 115 AM CST.

* AT 1234 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  NORTHWEST OF TAMAROA...MOVING EAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  TAMAROA...
  SESSER...
  REND LAKE AREA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NOW IS THE TIME TO IMPLEMENT YOUR TORNADO PLAN OF ACTION. SEEK
SHELTER INDOORS IN A BASEMENT...OR IN AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A HOME OR BUILDING.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

&&

LAT...LON 3818 8871 3804 8871 3811 8937 3821 8930
      3822 8915
TIME...MOT...LOC 0638Z 272DEG 45KT 3819 8926

$$

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 27, 8:53 PM CST	Severe Thunderstorm Warning	PAH	Johnson, Pope, Saline, Williamson	25 min
Feb 27, 9:23 PM CST	Severe Thunderstorm Warning	PAH	Franklin, Hamilton, Jefferson, Wayne, Williamson	37 min
Feb 27, 9:47 PM CST	Severe Thunderstorm Warning	PAH	Edwards, Hamilton, Wayne	28 min
Feb 28, 12:14 AM CST	Tornado Warning	PAH	Jefferson	46 min
Feb 28, 12:46 AM CST	Tornado Warning	PAH	Hamilton, Wayne, White	44 min
Feb 28, 12:53 AM CST	Tornado Warning	PAH	Wayne	37 min
Feb 28, 1:12 AM CST	Tornado Warning	PAH	Edwards, Wabash	33 min
Feb 28, 1:32 AM CST	Tornado Warning	PAH	Jackson, Union	43 min
Feb 28, 1:35 AM CST	Tornado Warning	PAH	Wabash	40 min
Feb 28, 2:02 AM CST	Severe Thunderstorm Warning	PAH	Franklin, Jackson, Johnson, Union, Williamson	28 min
Feb 28, 12:06 PM CST	River Flood Warning	PAH	Massac, Pope	29 days
Feb 28, 12:06 PM CST	River Flood Warning	PAH	Alexander	19 days

Nearby

Tornado Warnings in Illinois, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.