Alert archive / Illinois / Tornado Warnings in 2012

Tornado Warning 81, NWS Paducah, KY

September 1, 2012Massac County, Pulaski County, Illinois; Ballard County, McCracken County, Kentucky

NWS Paducah, KY issued this tornado warning at Sep 1, 2012, 7:05 PM CDT for Massac County, Pulaski County, Illinois; Ballard County, McCracken County, Kentucky. It was in force for 25 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 1, 2012, 7:05 PM CDT (00:05 UTC)
Expired
Sep 1, 2012, 7:30 PM CDT
In force
25 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon

Counties Massac County, IL, Pulaski County, IL, Ballard County, KY, McCracken County, KY

The radar

The Paducah radar (KPAH), 19 km from the middle of the area, began a volume at 00:08 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

TimeReportWhereRemark
Sep 1, 7:20 PM CDTTSTM WND DMG2 S Round Knob, ILLARGE TREES DOWN...SEVERAL TREES DOWN...TREE TOPS BLOWN OUT FROM 2 MILES SOUTH OF ROUND KNOB AND THEN SCATTERED ABOUT METROPOLIS.
Sep 1, 7:20 PM CDTTORNADOWoodville, KYTORNADO REPORTED BY EM.
Sep 1, 7:29 PM CDTTSTM WND DMGMetropolis, ILPOWER OUTAGES WITH HALF THE CITY OUT. LARGE TREE LIMBS DOWN. TIME ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Sep 1, 1:19 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.1 hours before the alert went out and 237 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2012-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1909 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2012-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1909 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1040 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.5

Open this sounding in Storm Lab

The text

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

610 
WFUS53 KPAH 020005
TORPAH
ILC127-153-KYC007-145-020030-
/O.NEW.KPAH.TO.W.0081.120902T0005Z-120902T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
705 PM CDT SAT SEP 1 2012

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN MASSAC COUNTY IN SOUTHERN ILLINOIS...
  EAST CENTRAL PULASKI COUNTY IN SOUTHERN ILLINOIS...
  NORTHERN BALLARD COUNTY IN WESTERN KENTUCKY...
  NORTHWESTERN MCCRACKEN COUNTY IN WESTERN KENTUCKY...

* UNTIL 730 PM CDT.

* AT 704 PM CDT...STORM SPOTTERS REPORTED A FUNNEL CLOUD 6 MILES
  NORTHWEST OF LA CENTER. A TORNADO MAY DEVELOP AT ANY TIME! RADAR
  SHOWED THIS TORNADIC STORM MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IN THE WARNED AREA INCLUDE...
  LA CENTER...METROPOLIS...NEW COLUMBIA AND JOPPA.

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 3733 8879 3716 8867 3704 8905 3721 8914
TIME...MOT...LOC 0006Z 247DEG 33KT 3715 8903

$$
PS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 7:23 PM CDTTornado WarningPAHMassac22 min
Sep 1, 7:34 PM CDTAreal Flood WarningPAHGallatin, Hardin, Johnson, Massac, Pope, Saline3 hr
Sep 1, 7:35 PM CDTTornado WarningPAHMassac, Pope25 min
Sep 1, 7:44 PM CDTSevere Thunderstorm WarningPAHEdwards, Hamilton, Wayne, White31 min
Sep 1, 7:48 PM CDTSevere Thunderstorm WarningPAHHardin, Massac, Pope27 min
Sep 1, 7:07 PM CDTSevere Thunderstorm WarningPAHBallard, Carlisle, Graves, McCracken38 min
Sep 1, 8:50 PM CDTAreal Flood WarningPAHDaviess, Henderson, McLean, Union, Webster3 hr

Nearby

Tornado Warnings in Illinois, 2012Tornado Warnings in Kentucky, 2012Every tornado warning in 2012Tornadoes in 2012

Sources

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