Alert archive / Illinois / Tornado Warnings in 2012

Tornado Warning 83, NWS Paducah, KY

September 1, 2012McCracken County, Kentucky; Massac County, Pope County, Illinois

NWS Paducah, KY issued this tornado warning at Sep 1, 2012, 7:35 PM CDT for McCracken County, Kentucky; Massac County, Pope County, Illinois. It was in force for 25 min. 1 report 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, 7:35 PM CDT (00:35 UTC)
Expired
Sep 1, 2012, 8:00 PM CDT
In force
25 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon

Counties Massac County, IL, Pope County, IL, McCracken County, KY

The radar

The Paducah radar (KPAH), 22 km from the middle of the area, began a volume at 00:36 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, 7:40 PM CDTTSTM WND DMGRosebud, ILSCATTERED 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, 0.6 hours before the alert went out and 223 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.

989 
WFUS53 KPAH 020035
TORPAH
ILC127-151-KYC145-020100-
/O.NEW.KPAH.TO.W.0083.120902T0035Z-120902T0100Z/

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

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
  MASSAC COUNTY IN SOUTHERN ILLINOIS...
  CENTRAL POPE COUNTY IN SOUTHERN ILLINOIS...
  NORTH CENTRAL MCCRACKEN COUNTY IN WESTERN KENTUCKY...

* UNTIL 800 PM CDT.

* AT 731 PM CDT...RADAR DETECTED A SEVERE THUNDERSTORM WITH A HISTORY
  OF PRODUCING TORNADOES. THIS DANGEROUS STORM WAS LOCATED NEAR
  ROUND KNOB...MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IN THE WARNED AREA INCLUDE...
  MAINLY RURAL AREAS OF CENTRAL MASSAC AND CENTRAL POPE COUNTIES.

THIS INCLUDES INTERSTATE 24 BETWEEN EXITS 27 AND 37.

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 3725 8882 3743 8854 3719 8849 3711 8869
TIME...MOT...LOC 0035Z 235DEG 30KT 3723 8866

$$
!PS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 7:05 PM CDTTornado WarningPAHBallard, McCracken25 min
Sep 1, 7:07 PM CDTSevere Thunderstorm WarningPAHBallard, Carlisle, Graves, McCracken38 min
Sep 1, 7:23 PM CDTTornado WarningPAHMcCracken22 min
Sep 1, 7:34 PM CDTAreal Flood WarningPAHCarlisle, Crittenden, Graves, Livingston, Lyon, McCracken and 1 more3 hr
Sep 1, 7:48 PM CDTSevere Thunderstorm WarningPAHCrittenden, Livingston, Lyon27 min
Sep 1, 8:50 PM CDTAreal Flood WarningPAHDaviess, Henderson, McLean, Union, Webster3 hr
Sep 1, 7:44 PM CDTSevere Thunderstorm WarningPAHEdwards, Hamilton, Wayne, White31 min

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.