Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 129
NWS STORM PREDICTION CENTER NORMAN OK
120 AM CDT FRI APR 10 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN INDIANA
WESTERN AND CENTRAL KENTUCKY
WESTERN AND MIDDLE TENNESSEE
EFFECTIVE THIS FRIDAY MORNING FROM 120 AM UNTIL 900 AM CDT.
HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTHEAST OF
JACKSON TENNESSEE TO 45 MILES NORTHEAST OF EVANSVILLE INDIANA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU9).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 127...WW 128...
DISCUSSION...FAR WRN KY/TN SQLN EXPECTED TO CONTINUE ENE IN ZONE OF
STRONG ASCENT IN EXIT REGION OF 70 KT MID LVL JET STREAK. AREA WIND
PROFILES...GRADUALLY INCREASING MOISTURE AVAILABILITY...AND
RELATIVELY LARGE LOW-LVL TEMP-DEW POINT SPREADS SUGGEST CONTINUED
CHANCE FOR LOCALLY DMGG WIND/MARGINALLY SVR HAIL...AND PERHAPS AN
ISOLD TORNADO.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION
VECTOR 26060.
...CORFIDI
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 129 SEVERE TSTM IN KY TN 100620Z - 101400Z
AXIS..75 STATUTE MILES EAST AND WEST OF LINE..
60SE MKL/JACKSON TN/ - 45NE EVV/EVANSVILLE IN/
..AVIATION COORDS.. 65NM E/W /38WNW MSL - 51NE PXV/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 26060.
LAT...LON 34978950 38478833 38478555 34978684
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 129 Status Report Messages:
STATUS REPORT #2 ON WW 129
VALID 101020Z - 101140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NE MSL TO
20 E CKV TO 25 SSE BWG.
..GUYER..04/10/09
ATTN...WFO...LMK...PAH...OHX...MEG...
&&
STATUS REPORT FOR WS 129
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TNC003-021-037-055-111-117-119-147-149-165-169-187-189-101140-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BEDFORD CHEATHAM DAVIDSON
GILES MACON MARSHALL
MAURY ROBERTSON RUTHERFORD
SUMNER TROUSDALE WILLIAMSON
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 129
VALID 100800Z - 100940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GUYER..04/10/09
ATTN...WFO...LMK...PAH...OHX...MEG...
&&
STATUS REPORT FOR WS 129
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC019-025-043-061-123-129-147-163-173-100940-
IN
. INDIANA COUNTIES INCLUDED ARE
CLARK CRAWFORD FLOYD
HARRISON PERRY POSEY
SPENCER VANDERBURGH WARRICK
$$
KYC003-009-027-029-031-033-047-059-061-085-091-093-099-101-107-
111-123-141-149-163-177-183-185-213-219-221-225-227-233-
100940-
KY
. KENTUCKY COUNTIES INCLUDED ARE
ALLEN BARREN BRECKINRIDGE
BULLITT BUTLER CALDWELL
CHRISTIAN DAVIESS EDMONSON
GRAYSON HANCOCK HARDIN
HART HENDERSON HOPKINS
JEFFERSON LARUE LOGAN
MCLEAN MEADE MUHLENBERG
OHIO OLDHAM SIMPSON
TODD TRIGG UNION
WARREN WEBSTER
$$
TNC003-005-017-021-023-037-039-043-055-069-071-077-079-081-083-
085-099-101-109-111-113-117-119-125-135-147-149-161-165-169-181-
183-187-189-100940-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BEDFORD BENTON CARROLL
CHEATHAM CHESTER DAVIDSON
DECATUR DICKSON GILES
HARDEMAN HARDIN HENDERSON
HENRY HICKMAN HOUSTON
HUMPHREYS LAWRENCE LEWIS
MCNAIRY MACON MADISON
MARSHALL MAURY MONTGOMERY
PERRY ROBERTSON RUTHERFORD
STEWART SUMNER TROUSDALE
WAYNE WEAKLEY WILLIAMSON
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
|
Low (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (60%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (<5%)
|
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.