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The expiration time in the watch graphic is amended if the watch is
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Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 109
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT THU APR 2 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EXTREME SOUTHEAST ILLINOIS
SOUTHWEST INDIANA
WESTERN AND CENTRAL KENTUCKY
NORTHERN MIDDLE TENNESSEE
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
800 PM CDT.
TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 5 MILES WEST NORTHWEST OF
EVANSVILLE INDIANA TO 15 MILES SOUTH SOUTHWEST OF NASHVILLE
TENNESSEE. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 105...WW 106...WW
107...WW 108...
DISCUSSION...SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS
AFTERNOON FROM MIDDLE TN NWD INTO WRN KY IN ADVANCE OF A LEAD
SHORTWAVE TROUGH EJECTING NEWD FROM THE LOWER MS VALLEY. THE HPX
VWP SHOWS FAVORABLE HODOGRAPH CURVATURE AND DEEP LAYER SHEAR FOR
SUPERCELLS...WHILE INSTABILITY AND MOISTURE ARE AT LEAST SUFFICIENT
FOR A TORNADO OR TWO. OTHERWISE...LARGE HAIL AND A FEW DAMAGING
GUSTS WILL BE THE MAIN SEVERE THREATS ALONG AND S OF THE PRIMARY
BAROCLINIC ZONE NEAR THE OH RIVER.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.
...THOMPSON
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 109 TORNADO IL IN KY TN 021940Z - 030100Z
AXIS..60 STATUTE MILES EAST AND WEST OF LINE..
5WNW EVV/EVANSVILLE IN/ - 15SSW BNA/NASHVILLE TN/
..AVIATION COORDS.. 50NM E/W /10NE PXV - 14SSW BNA/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
LAT...LON 38048651 35918570 35918784 38048872
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 109 Status Report Messages:
STATUS REPORT #4 ON WW 109
VALID 022340Z - 030040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 ESE BWG
TO 30 S BWG TO 25 ENE HOP TO 25 ENE EVV.
..JEWELL..04/02/09
ATTN...WFO...PAH...LMK...OHX...
&&
STATUS REPORT FOR WT 109
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC037-123-030040-
IN
. INDIANA COUNTIES INCLUDED ARE
DUBOIS PERRY
$$
KYC003-027-031-061-085-091-141-183-213-227-030040-
KY
. KENTUCKY COUNTIES INCLUDED ARE
ALLEN BRECKINRIDGE BUTLER
EDMONSON GRAYSON HANCOCK
LOGAN OHIO SIMPSON
WARREN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 109
VALID 022245Z - 022340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 WSW BNA
TO 5 NE CKV TO 30 WNW EVV.
..JEWELL..04/02/09
ATTN...WFO...PAH...LMK...OHX...
&&
STATUS REPORT FOR WT 109
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC037-051-123-125-129-147-163-173-022340-
IN
. INDIANA COUNTIES INCLUDED ARE
DUBOIS GIBSON PERRY
PIKE POSEY SPENCER
VANDERBURGH WARRICK
$$
KYC003-027-031-047-059-061-085-091-101-107-141-149-177-183-213-
219-225-227-233-022340-
KY
. KENTUCKY COUNTIES INCLUDED ARE
ALLEN BRECKINRIDGE BUTLER
CHRISTIAN DAVIESS EDMONSON
GRAYSON HANCOCK HENDERSON
HOPKINS LOGAN MCLEAN
MUHLENBERG OHIO SIMPSON
TODD UNION WARREN
WEBSTER
$$
TNC021-037-041-043-111-125-147-159-165-169-189-022340-
TN
. TENNESSEE COUNTIES INCLUDED ARE
CHEATHAM DAVIDSON DEKALB
DICKSON MACON MONTGOMERY
ROBERTSON SMITH SUMNER
TROUSDALE WILSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 109
VALID 022155Z - 022240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 WSW BNA
TO 5 E HOP TO 40 SW OWB TO 30 WNW EVV.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 374
..JEWELL..04/02/09
ATTN...WFO...PAH...LMK...OHX...
&&
STATUS REPORT FOR WT 109
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC037-051-123-125-129-147-163-173-022240-
IN
. INDIANA COUNTIES INCLUDED ARE
DUBOIS GIBSON PERRY
PIKE POSEY SPENCER
VANDERBURGH WARRICK
$$
KYC003-027-031-047-059-061-085-091-101-107-141-149-177-183-213-
219-225-227-233-022240-
KY
. KENTUCKY COUNTIES INCLUDED ARE
ALLEN BRECKINRIDGE BUTLER
CHRISTIAN DAVIESS EDMONSON
GRAYSON HANCOCK HENDERSON
HOPKINS LOGAN MCLEAN
MUHLENBERG OHIO SIMPSON
TODD UNION WARREN
WEBSTER
$$
TNC021-037-041-043-111-125-147-159-165-169-189-022240-
TN
. TENNESSEE COUNTIES INCLUDED ARE
CHEATHAM DAVIDSON DEKALB
DICKSON MACON MONTGOMERY
ROBERTSON SMITH SUMNER
TROUSDALE WILSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 109
VALID 022050Z - 022140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..04/02/09
ATTN...WFO...PAH...LMK...OHX...
&&
STATUS REPORT FOR WT 109
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC059-069-127-151-165-193-022140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
GALLATIN HARDIN MASSAC
POPE SALINE WHITE
$$
INC037-051-123-125-129-147-163-173-022140-
IN
. INDIANA COUNTIES INCLUDED ARE
DUBOIS GIBSON PERRY
PIKE POSEY SPENCER
VANDERBURGH WARRICK
$$
KYC003-027-031-033-035-047-055-059-061-083-085-091-101-107-139-
141-143-145-149-157-177-183-213-219-221-225-227-233-022140-
KY
. KENTUCKY COUNTIES INCLUDED ARE
ALLEN BRECKINRIDGE BUTLER
CALDWELL CALLOWAY CHRISTIAN
CRITTENDEN DAVIESS EDMONSON
GRAVES GRAYSON HANCOCK
HENDERSON HOPKINS LIVINGSTON
LOGAN LYON MCCRACKEN
MCLEAN MARSHALL MUHLENBERG
OHIO SIMPSON TODD
TRIGG UNION WARREN
WEBSTER
$$
TNC005-021-037-041-043-083-085-111-125-147-159-161-165-169-189-
022140-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BENTON CHEATHAM DAVIDSON
DEKALB DICKSON HOUSTON
HUMPHREYS MACON MONTGOMERY
ROBERTSON SMITH STEWART
SUMNER TROUSDALE WILSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (40%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
