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
745 PM EDT FRI MAR 30 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EXTREME NORTHERN KENTUCKY
SOUTH CENTRAL AND SOUTHEAST OHIO
NORTHWEST WEST VIRGINIA AND THE NORTHERN WEST VIRGINIA
PANHANDLE
EFFECTIVE THIS FRIDAY NIGHT FROM 745 PM UNTIL MIDNIGHT EDT.
HAIL TO 1.5 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 35
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTH OF
WHEELING WEST VIRGINIA TO 25 MILES SOUTH OF CINCINNATI OHIO. 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...A BROKEN BAND OF SEVERE STORMS WILL CONTINUE SPREAD
ESEWD TOWARD THE OH RIVER IN ASSOCIATION WITH A MIDLEVEL TROUGH AND
SURFACE COLD FRONT. WEAK-MODERATE INSTABILITY PERSISTS IN ADVANCE
OF THE FRONT...AND VERTICAL SHEAR IS SUFFICIENT FOR BOTH EMBEDDED
SUPERCELLS AND BOWING SEGMENTS. GIVEN THE SOMEWHAT MODEST BOUNDARY
LAYER MOISTURE...DAMAGING WINDS AND LARGE HAIL APPEAR TO BE THE
PRIMARY SEVERE THREATS BEFORE INSTABILITY DIMINISHES LATER TONIGHT.
AVIATION...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 450. MEAN STORM
MOTION VECTOR 29035.
...THOMPSON
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 WV 302345Z - 310400Z
AXIS..35 STATUTE MILES NORTH AND SOUTH OF LINE..
30S HLG/WHEELING WV/ - 25S LUK/CINCINNATI OH/
..AVIATION COORDS.. 30NM N/S /18SSE AIR - 21SE CVG/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 29035.
LAT...LON 39248065 38228441 39248441 40258065
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 #3 ON WW 120
VALID 310335Z - 310400Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NW HTS TO
10 NW UNI TO 25 SSE ZZV TO 35 S HLG.
WW 120 WILL BE ALLOWED TO EXPIRE AT 310400Z.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 395.
..PETERS..03/31/12
ATTN...WFO...ILN...RLX...PBZ...
&&
STATUS REPORT FOR WS 120
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC089-310400-
KY
. KENTUCKY COUNTIES INCLUDED ARE
GREENUP
$$
OHC009-053-079-087-105-115-163-167-310400-
OH
. OHIO COUNTIES INCLUDED ARE
ATHENS GALLIA JACKSON
LAWRENCE MEIGS MORGAN
VINTON WASHINGTON
$$
WVC017-035-053-073-085-095-103-105-107-310400-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
DODDRIDGE JACKSON MASON
PLEASANTS RITCHIE TYLER
WETZEL WIRT WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 120
VALID 310240Z - 310340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NNE LEX
TO 55 ESE LUK TO 25 SE CMH TO 20 SSW ZZV TO 10 S HLG.
..PETERS..03/31/12
ATTN...WFO...ILN...RLX...PBZ...
&&
STATUS REPORT FOR WS 120
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC089-135-161-201-310340-
KY
. KENTUCKY COUNTIES INCLUDED ARE
GREENUP LEWIS MASON
ROBERTSON
$$
OHC001-009-053-073-079-087-105-111-115-121-131-141-145-163-167-
310340-
OH
. OHIO COUNTIES INCLUDED ARE
ADAMS ATHENS GALLIA
HOCKING JACKSON LAWRENCE
MEIGS MONROE MORGAN
NOBLE PIKE ROSS
SCIOTO VINTON WASHINGTON
$$
WVC017-035-051-053-073-085-095-103-105-107-310340-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
DODDRIDGE JACKSON MARSHALL
MASON PLEASANTS RITCHIE
TYLER WETZEL WIRT
WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 120
VALID 310145Z - 310240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 NNE LUK TO
35 E LUK TO 40 SW CMH TO ZZV TO 30 WSW HLG TO 30 W HLG.
..PETERS..03/31/12
ATTN...WFO...ILN...RLX...PBZ...
&&
STATUS REPORT FOR WS 120
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC023-089-135-161-191-201-310240-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BRACKEN GREENUP LEWIS
MASON PENDLETON ROBERTSON
$$
OHC001-009-013-015-025-053-071-073-079-087-105-111-115-121-127-
131-141-145-163-167-310240-
OH
. OHIO COUNTIES INCLUDED ARE
ADAMS ATHENS BELMONT
BROWN CLERMONT GALLIA
HIGHLAND HOCKING JACKSON
LAWRENCE MEIGS MONROE
MORGAN NOBLE PERRY
PIKE ROSS SCIOTO
VINTON WASHINGTON
$$
WVC017-035-051-053-069-073-085-095-103-105-107-310240-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
DODDRIDGE JACKSON MARSHALL
MASON OHIO PLEASANTS
RITCHIE TYLER WETZEL
WIRT WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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
|
Low (20%)
|
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 (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.