Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 268
NWS STORM PREDICTION CENTER NORMAN OK
1245 PM CDT FRI MAY 8 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
PARTS OF SOUTHERN INDIANA
MUCH OF CENTRAL AND PARTS OF EASTERN KENTUCKY
MUCH OF MIDDLE AND PARTS OF EASTERN TENNESSEE
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL
700 PM CDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH
NORTHEAST OF LOUISVILLE KENTUCKY TO 40 MILES SOUTH SOUTHWEST OF
CROSSVILLE TENNESSEE. FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).
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 267...
DISCUSSION...MATURE DERECHO CONTINUES RAPIDLY EWD WITH WIDESPREAD
DAMAGING WINDS. AIR MASS WHILE NOT QUITE AS UNSTABLE AS FURTHER
W...IS BECOMING MDTLY UNSTABLE ACROSS THE WATCH AND WILL SUPPORT
CONTINUATION OF DAMAGING WINDS ALONG WITH BRIEF/ISOLATED
TORNADOES...PARTICULARLY ASSOCIATED WITH THE MESO CYCLONE
ACCOMPANYING THE DERECHO.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 26045.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 268 SEVERE TSTM IN KY TN 081745Z - 090000Z
AXIS..80 STATUTE MILES EAST AND WEST OF LINE..
40NNE SDF/LOUISVILLE KY/ - 40SSW CSV/CROSSVILLE TN/
..AVIATION COORDS.. 70NM E/W /37N LOU - 29NNW GQO/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26045.
LAT...LON 38708395 35408393 35408676 38708693
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 268 Status Report Messages:
STATUS REPORT #2 ON WW 268
VALID 082335Z - 090000Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNE LOZ
TO 35 WNW LOZ TO 45 NE LEX.
WW 268 WILL BE ALLOWED TO EXPIRE AS SCHEDULED AT 00Z.
..GUYER..05/08/09
ATTN...WFO...LMK...ILN...JKL...MRX...OHX...
&&
STATUS REPORT FOR WS 268
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC011-065-069-129-165-173-197-205-237-090000-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BATH ESTILL FLEMING
LEE MENIFEE MONTGOMERY
POWELL ROWAN WOLFE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 268
VALID 082230Z - 082340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNE LOZ
TO 45 ENE BWG TO 20 WSW SDF TO 40 N SDF.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 766
..GUYER..05/08/09
ATTN...WFO...LMK...ILN...JKL...MRX...OHX...
&&
STATUS REPORT FOR WS 268
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC019-043-077-143-082340-
IN
. INDIANA COUNTIES INCLUDED ARE
CLARK FLOYD JEFFERSON
SCOTT
$$
KYC005-011-017-021-029-045-049-065-067-069-073-079-087-093-097-
099-103-111-113-123-129-137-151-155-165-167-173-179-181-185-197-
205-209-211-215-217-223-229-237-239-082340-
KY
. KENTUCKY COUNTIES INCLUDED ARE
ANDERSON BATH BOURBON
BOYLE BULLITT CASEY
CLARK ESTILL FAYETTE
FLEMING FRANKLIN GARRARD
GREEN HARDIN HARRISON
HART HENRY JEFFERSON
JESSAMINE LARUE LEE
LINCOLN MADISON MARION
MENIFEE MERCER MONTGOMERY
NELSON NICHOLAS OLDHAM
POWELL ROWAN SCOTT
SHELBY SPENCER TAYLOR
TRIMBLE WASHINGTON WOLFE
WOODFORD
$$
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
|
High (90%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (60%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (50%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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 
