Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 135
NWS STORM PREDICTION CENTER NORMAN OK
810 PM EDT FRI APR 19 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
DELAWARE
NEW JERSEY
EXTREME SOUTHEAST NEW YORK
EXTREME EASTERN PENNSYLVANIA
COASTAL WATERS
* EFFECTIVE THIS FRIDAY EVENING FROM 810 PM UNTIL 1100 PM EDT.
* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 30
STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES WEST
NORTHWEST OF POUGHKEEPSIE NEW YORK TO 25 MILES SOUTHWEST OF
SALISBURY MARYLAND. FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 130...WW 131...WW
132...WW 133...WW 134...
DISCUSSION...QLCS WILL CONTINUE TO PROGRESS EWD THIS EVENING ACROSS
SE NY/NJ/DE...WITH WEAKENING EXPECTED BY THE TIME IT REACHES THE
COAST AND THE COOLER MARINE INFLUENCE. UNTIL THEN...EMBEDDED BOWING
STRUCTURES MOVING FROM NE PA INTO NRN NY/SE NY...AND FROM THE ERN
SHORE OF MD INTO DE/SRN NJ...WILL POSE A RISK FOR AT LEAST ISOLATED
DAMAGING WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM
MOTION VECTOR 24040.
...THOMPSON
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 135 SEVERE TSTM DE NJ NY PA CW 200010Z - 200300Z
AXIS..30 STATUTE MILES EAST AND WEST OF LINE..
20WNW POU/POUGHKEEPSIE NY/ - 25SW SBY/SALISBURY MD/
..AVIATION COORDS.. 25NM E/W /42NNE SAX - 22SW SBY/
HAIL SURFACE AND ALOFT..0.5 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 24040.
LAT...LON 41747366 38067526 38067637 41747481
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 135 Status Report Messages:
STATUS REPORT #2 ON WW 135
VALID 200235Z - 200340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 NNW WAL TO
15 N POU.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 545
..COHEN..04/20/13
ATTN...WFO...PHI...OKX...
&&
STATUS REPORT FOR WS 135
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC005-200340-
DE
. DELAWARE COUNTIES INCLUDED ARE
SUSSEX
$$
NJC001-003-005-009-011-013-017-023-025-029-039-200340-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BERGEN BURLINGTON
CAPE MAY CUMBERLAND ESSEX
HUDSON MIDDLESEX MONMOUTH
OCEAN EASTERN UNION
$$
NYC087-200340-
NY
. NEW YORK COUNTIES INCLUDED ARE
ROCKLAND
$$
ANZ431-200340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
$$
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.
$$
STATUS REPORT #1 ON WW 135
VALID 200125Z - 200240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 545
..COHEN..04/20/13
ATTN...WFO...PHI...OKX...
&&
STATUS REPORT FOR WS 135
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC001-003-005-200240-
DE
. DELAWARE COUNTIES INCLUDED ARE
KENT NEW CASTLE SUSSEX
$$
NJC001-003-005-007-009-011-013-015-017-019-021-023-025-027-029-
031-033-035-037-039-041-200240-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BERGEN BURLINGTON
CAMDEN CAPE MAY CUMBERLAND
ESSEX GLOUCESTER HUDSON
HUNTERDON MERCER MIDDLESEX
MONMOUTH MORRIS OCEAN
PASSAIC SALEM SOMERSET
SUSSEX EASTERN UNION WARREN
$$
NYC071-087-200240-
NY
. NEW YORK COUNTIES INCLUDED ARE
ORANGE ROCKLAND
$$
PAC017-045-091-101-200240-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BUCKS DELAWARE MONTGOMERY
PHILADELPHIA
$$
ANZ430-431-200240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
$$
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 (10%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Low (<5%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (<5%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (50%)
|
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
