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.
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 357
NWS STORM PREDICTION CENTER NORMAN OK
200 PM EDT TUE MAY 24 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHEAST KENTUCKY
MIDDLE AND EASTERN TENNESSEE
EXTREME SOUTHWEST VIRGINIA
EXTREME SOUTHERN WEST VIRGINIA
EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 200 PM UNTIL
800 PM EDT.
HAIL TO 2 INCHES 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 45
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTHWEST
OF NASHVILLE TENNESSEE TO 50 MILES NORTHEAST OF BRISTOL
TENNESSEE. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
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 352...WW 354...WW
355...WW 356...
DISCUSSION...THUNDERSTORMS ARE RE-DEVELOPING OVER PORTIONS OF KY/TN
WHERE STRONG DAYTIME HEATING/DESTABILIZATION IS OCCURRING.
SUFFICIENT WESTERLY FLOW ALOFT AND STEEP LAPSE RATES WILL PROMOTE A
RISK OF HAIL AND DAMAGING WINDS IN THE STRONGER CELLS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27030.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 357 SEVERE TSTM KY TN VA WV 241800Z - 250000Z
AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
30SW BNA/NASHVILLE TN/ - 50NE TRI/BRISTOL TN/
..AVIATION COORDS.. 40NM N/S /26SW BNA - 37NNE HMV/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27030.
LAT...LON 36478705 37638176 36338176 35168705
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 357 Status Report Messages:
STATUS REPORT #3 ON WW 357
VALID 242150Z - 242240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SW BNA TO
25 E BNA TO 30 NNW CSV TO 40 SSW LOZ TO 25 SE LOZ TO 30 S JKL TO
30 ESE JKL TO 40 E JKL.
..DEAN..05/24/11
ATTN...WFO...LMK...JKL...MRX...OHX...RLX...
&&
STATUS REPORT FOR WS 357
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC013-095-131-133-242240-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BELL HARLAN LESLIE
LETCHER
$$
TNC001-007-009-013-019-025-029-035-049-057-059-063-067-073-089-
091-093-105-129-133-141-143-145-155-163-171-173-179-185-
242240-
TN
. TENNESSEE COUNTIES INCLUDED ARE
ANDERSON BLEDSOE BLOUNT
CAMPBELL CARTER CLAIBORNE
COCKE CUMBERLAND FENTRESS
GRAINGER GREENE HAMBLEN
HANCOCK HAWKINS JEFFERSON
JOHNSON KNOX LOUDON
MORGAN OVERTON PUTNAM
RHEA ROANE SEVIER
SULLIVAN UNICOI UNION
WASHINGTON WHITE
$$
VAC051-105-167-169-191-195-520-720-242240-
VA
. VIRGINIA COUNTIES INCLUDED ARE
DICKENSON LEE RUSSELL
SCOTT WASHINGTON WISE
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BRISTOL NORTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 357
VALID 242030Z - 242140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SW BNA TO
20 ENE LOZ.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 933
..GRAMS..05/24/11
ATTN...WFO...LMK...JKL...MRX...OHX...RLX...
&&
STATUS REPORT FOR WS 357
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC013-051-095-121-131-133-147-193-235-242140-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BELL CLAY HARLAN
KNOX LESLIE LETCHER
MCCREARY PERRY WHITLEY
$$
TNC001-003-007-009-013-015-019-025-027-029-031-035-041-049-057-
059-061-063-067-073-087-089-091-093-105-117-119-129-133-137-141-
143-145-149-151-155-159-163-171-173-175-177-179-185-187-189-
242140-
TN
. TENNESSEE COUNTIES INCLUDED ARE
ANDERSON BEDFORD BLEDSOE
BLOUNT CAMPBELL CANNON
CARTER CLAIBORNE CLAY
COCKE COFFEE CUMBERLAND
DE KALB FENTRESS GRAINGER
GREENE GRUNDY HAMBLEN
HANCOCK HAWKINS JACKSON
JEFFERSON JOHNSON KNOX
LOUDON MARSHALL MAURY
MORGAN OVERTON PICKETT
PUTNAM RHEA ROANE
RUTHERFORD SCOTT SEVIER
SMITH SULLIVAN UNICOI
UNION VAN BUREN WARREN
WASHINGTON WHITE WILLIAMSON
WILSON
$$
VAC027-051-105-167-169-191-195-520-720-242140-
VA
. VIRGINIA COUNTIES INCLUDED ARE
BUCHANAN DICKENSON LEE
RUSSELL SCOTT WASHINGTON
WISE
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BRISTOL NORTON
$$
WVC047-242140-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
MCDOWELL
$$
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.
$$
STATUS REPORT #1 ON WW 357
VALID 241950Z - 242040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NW BNA TO
25 SE BWG.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 931
..GRAMS..05/24/11
ATTN...WFO...LMK...JKL...MRX...OHX...RLX...
&&
STATUS REPORT FOR WS 357
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC013-051-053-057-095-121-125-131-133-147-171-193-199-207-231-
235-242040-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BELL CLAY CLINTON
CUMBERLAND HARLAN KNOX
LAUREL LESLIE LETCHER
MCCREARY MONROE PERRY
PULASKI RUSSELL WAYNE
WHITLEY
$$
TNC001-003-007-009-013-015-019-025-027-029-031-035-037-041-049-
057-059-061-063-067-073-087-089-091-093-105-111-117-119-129-133-
137-141-143-145-149-151-155-159-163-165-169-171-173-175-177-179-
185-187-189-242040-
TN
. TENNESSEE COUNTIES INCLUDED ARE
ANDERSON BEDFORD BLEDSOE
BLOUNT CAMPBELL CANNON
CARTER CLAIBORNE CLAY
COCKE COFFEE CUMBERLAND
DAVIDSON DE KALB FENTRESS
GRAINGER GREENE GRUNDY
HAMBLEN HANCOCK HAWKINS
JACKSON JEFFERSON JOHNSON
KNOX LOUDON MACON
MARSHALL MAURY MORGAN
OVERTON PICKETT PUTNAM
RHEA ROANE RUTHERFORD
SCOTT SEVIER SMITH
SULLIVAN SUMNER TROUSDALE
UNICOI UNION VAN BUREN
WARREN WASHINGTON WHITE
WILLIAMSON WILSON
$$
VAC027-051-105-167-169-191-195-520-720-242040-
VA
. VIRGINIA COUNTIES INCLUDED ARE
BUCHANAN DICKENSON LEE
RUSSELL SCOTT WASHINGTON
WISE
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BRISTOL NORTON
$$
WVC047-242040-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
MCDOWELL
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
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 (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 
@NWSSPC
