Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 120
NWS STORM PREDICTION CENTER NORMAN OK
850 PM EDT SUN APR 5 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EASTERN KENTUCKY
SOUTHEAST OHIO
EAST TENNESSEE
SOUTHWESTERN VIRGINIA
WESTERN AND CENTRAL WEST VIRGINIA
EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 850 PM UNTIL
200 AM EDT.
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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHEAST OF
PARKERSBURG WEST VIRGINIA TO 20 MILES WEST SOUTHWEST OF KNOXVILLE
TENNESSEE. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
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 118...WW 119...
DISCUSSION...BROKEN BANDS OF TSTMS FROM CNTRL KY SSW INTO MIDDLE
TN...EXPECTED TO CONTINUE MAINLY ENE TO THE WRN FOOTHILLS OF THE
CNTRL/SRN APPALCHAINAS LATER THIS EVE AS EWD ACCELERATION OF OH/TN
VLY COLD FRONT ENHANCES LOW LVL UPLIFT. STORMS WILL ENCOUNTER
REGION LEFT WARM BUT RELATIVELY DRY FROM DOWNSLOPE FLOW EARLIER IN
THE DAY. COUPLED WITH STRONG HEIGHT FALLS/STRONG WIND FIELD
DOWNSTREAM FROM IL UPR VORT...SETUP COULD CONTINUE TO YIELD
STRUCTURES WITH SVR WINDS...MARGINALLY SVR HAIL...AND POSSIBLY A
BRIEF TORNADO OR TWO.
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 22050.
...CORFIDI
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 120 SEVERE TSTM KY OH TN VA WV 060050Z - 060600Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
15NE PKB/PARKERSBURG WV/ - 20WSW TYS/KNOXVILLE TN/
..AVIATION COORDS.. 60NM E/W /36SSW AIR - 24WSW VXV/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 22050.
LAT...LON 39507991 35708308 35708558 39508254
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 120 Status Report Messages:
STATUS REPORT #2 ON WW 120
VALID 060425Z - 060540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 ESE CSV
TO 40 N TYS TO 50 WNW BLF TO 15 ENE CRW TO 15 NE PKB.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 405
..SPC..04/06/09
ATTN...WFO...JKL...RLX...MRX...
&&
STATUS REPORT FOR WS 120
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC095-133-195-060540-
KY
. KENTUCKY COUNTIES INCLUDED ARE
HARLAN LETCHER PIKE
$$
TNC001-009-013-019-025-029-057-059-063-067-073-089-091-093-105-
145-155-163-171-173-179-060540-
TN
. TENNESSEE COUNTIES INCLUDED ARE
ANDERSON BLOUNT CAMPBELL
CARTER CLAIBORNE COCKE
GRAINGER GREENE HAMBLEN
HANCOCK HAWKINS JEFFERSON
JOHNSON KNOX LOUDON
ROANE SEVIER SULLIVAN
UNICOI UNION WASHINGTON
$$
VAC027-051-105-167-169-191-195-520-720-060540-
VA
. VIRGINIA COUNTIES INCLUDED ARE
BUCHANAN DICKENSON LEE
RUSSELL SCOTT WASHINGTON
WISE
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BRISTOL NORTON
$$
WVC005-007-013-015-017-019-021-033-039-041-045-047-067-073-081-
085-087-095-109-060540-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
BOONE BRAXTON CALHOUN
CLAY DODDRIDGE FAYETTE
GILMER HARRISON KANAWHA
LEWIS LOGAN MCDOWELL
NICHOLAS PLEASANTS RALEIGH
RITCHIE ROANE TYLER
WYOMING
$$
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.
$$
STATUS REPORT #1 ON WW 120
VALID 060250Z - 060340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SW LOZ TO
10 WSW JKL TO 20 WNW HTS TO 20 NNW UNI.
..SPC..04/06/09
ATTN...WFO...JKL...RLX...MRX...
&&
STATUS REPORT FOR WS 120
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC013-019-025-043-051-063-071-089-095-115-119-121-125-127-131-
133-147-153-159-175-189-193-195-235-060340-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BELL BOYD BREATHITT
CARTER CLAY ELLIOTT
FLOYD GREENUP HARLAN
JOHNSON KNOTT KNOX
LAUREL LAWRENCE LESLIE
LETCHER MCCREARY MAGOFFIN
MARTIN MORGAN OWSLEY
PERRY PIKE WHITLEY
$$
OHC009-053-079-087-105-115-163-167-060340-
OH
. OHIO COUNTIES INCLUDED ARE
ATHENS GALLIA JACKSON
LAWRENCE MEIGS MORGAN
VINTON WASHINGTON
$$
TNC001-009-013-019-025-029-057-059-063-067-073-089-091-093-105-
129-145-151-155-163-171-173-179-060340-
TN
. TENNESSEE COUNTIES INCLUDED ARE
ANDERSON BLOUNT CAMPBELL
CARTER CLAIBORNE COCKE
GRAINGER GREENE HAMBLEN
HANCOCK HAWKINS JEFFERSON
JOHNSON KNOX LOUDON
MORGAN ROANE SCOTT
SEVIER SULLIVAN UNICOI
UNION WASHINGTON
$$
VAC027-051-105-167-169-191-195-520-720-060340-
VA
. VIRGINIA COUNTIES INCLUDED ARE
BUCHANAN DICKENSON LEE
RUSSELL SCOTT WASHINGTON
WISE
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BRISTOL NORTON
$$
WVC005-007-011-013-015-017-019-021-033-035-039-041-043-045-047-
053-059-067-073-079-081-085-087-095-099-105-107-109-060340-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
BOONE BRAXTON CABELL
CALHOUN CLAY DODDRIDGE
FAYETTE GILMER HARRISON
JACKSON KANAWHA LEWIS
LINCOLN LOGAN MCDOWELL
MASON MINGO NICHOLAS
PLEASANTS PUTNAM RALEIGH
RITCHIE ROANE TYLER
WAYNE WIRT WOOD
WYOMING
$$
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 (70%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (50%)
|
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 (90%)
|
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.