Alert archive / Illinois / Tornado Warnings in 2012

Tornado Warning 82, NWS Paducah, KY

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

NWS Paducah, KY issued this tornado warning at Sep 1, 2012, 7:23 PM CDT for Massac County, Illinois; McCracken County, Kentucky. It was in force for 22 min. 2 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, 7:23 PM CDT (00:23 UTC)
Expired
Sep 1, 2012, 7:45 PM CDT
In force
22 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon

Counties Massac County, IL, McCracken County, KY

The radar

The Paducah radar (KPAH), 11 km from the middle of the area, began a volume at 00:27 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, 7:29 PM CDTTSTM WND DMGMetropolis, ILPOWER OUTAGES WITH HALF THE CITY OUT. LARGE TREE LIMBS DOWN. TIME ESTIMATED.
Sep 1, 7:45 PM CDTTSTM WND DMGPaducah, KYLARGE TREE LIMB DOWN ON BRUCE STREET.

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, 0.4 hours before the alert went out and 221 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.

904 
WFUS53 KPAH 020023
TORPAH
ILC127-KYC145-020045-
/O.NEW.KPAH.TO.W.0082.120902T0023Z-120902T0045Z/

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

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

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

* UNTIL 745 PM CDT.

* AT 717 PM CDT...EMERGENCY MANAGEMENT REPORTED A TORNADO NEAR WOODVILLE
6 MILES EAST OF LA CENTER. RADAR SHOWED THIS TORNADO MOVING 
NORTHEAST AT 50 MPH.

* LOCATIONS IN THE WARNED AREA INCLUDE...
  METROPOLIS...PADUCAH...WEST PADUCAH AND BROOKPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 3728 8865 3705 8857 3700 8884 3718 8891
TIME...MOT...LOC 0022Z 245DEG 41KT 3713 8881

$$
PS
1 follow-up statement
902 
WWUS53 KPAH 020038
SVSPAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
738 PM CDT SAT SEP 1 2012

ILC127-KYC145-020045-
/O.CON.KPAH.TO.W.0082.000000T0000Z-120902T0045Z/
MASSAC IL-MCCRACKEN KY-
738 PM CDT SAT SEP 1 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN MASSAC COUNTY IN
SOUTHERN ILLINOIS...AND CENTRAL MCCRACKEN COUNTY IN WESTERN KENTUCKY
UNTIL 745 PM CDT...

AT 736 PM CDT...RADAR DETECTED A SEVERE THUNDERSTORM WITH A HISTORY
OF PRODUCING TORNADOES.  THIS DANGEROUS STORM WAS LOCATED 5 MILES
NORTH OF BROOKPORT...OR 6 MILES NORTHEAST OF METROPOLIS...MOVING 
NORTHEAST AT 45 MPH. 

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 3705 8869 3724 8874 3728 8865 3705 8857
TIME...MOT...LOC 0038Z 245DEG 41KT 3721 8860

$$
PS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 7:05 PM CDTTornado WarningPAHMassac, Pulaski25 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.