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 97
NWS Storm Prediction Center Norman OK
1230 PM EDT Wed Apr 21 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Connecticut
Delaware
Western Massachusetts
Eastern Maryland
New Jersey
Southeast New York
Eastern Pennsylvania
Coastal Waters
* Effective this Wednesday afternoon and evening from 1230 PM
until 600 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...Fast-moving thunderstorms will continue to develop and
spread east-northeastward across the region this afternoon with
damaging winds and some hail as the primary concerns.
The severe thunderstorm watch area is approximately along and 55
statute miles east and west of a line from 35 miles north northeast
of Westfield MA to 30 miles south southeast of Patuxent River MD.
For a complete depiction of the watch see the associated watch
outline update (WOUS64 KWNS WOU7).
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.
&&
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
21035.
...Guyer
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 97 SEVERE TSTM CT DE MA MD NJ NY PA CW 211630Z - 212200Z
AXIS..55 STATUTE MILES EAST AND WEST OF LINE..
35NNE BAF/WESTFIELD MA/ - 30SSE NHK/PATUXENT RIVER MD/
..AVIATION COORDS.. 50NM E/W /42NNE BDL - 43SW SBY/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 21035.
LAT...LON 42617137 37877519 37877722 42617354
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 97 Status Report Messages:
STATUS REPORT #3 ON WW 97
VALID 212020Z - 212140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 E SBY TO
15 NE ACY TO 15 S JFK TO 20 NW BDR TO 25 ENE POU TO 40 NNW POU
AND 40 SE JFK TO 15 SE BDR TO 30 NE BDR TO 5 ESE BAF TO 20 WSW
EEN.
..WENDT..04/21/21
ATTN...WFO...OKX...BOX...ALY...PHI...LWX...AKQ...
&&
STATUS REPORT FOR WS 97
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC007-011-013-015-212140-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
MIDDLESEX NEW LONDON TOLLAND
WINDHAM
$$
MAC011-015-027-212140-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
FRANKLIN HAMPSHIRE WORCESTER
$$
ANZ331-332-350-353-212140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY TO THE
MOUTH OF THE CONNECTICUT RIVER
LONG ISLAND SOUND EAST OF THE MOUTH OF THE CONNECTICUT RIVER
MORICHES INLET NY TO MONTAUK POINT NY OUT 20 NM
FIRE ISLAND INLET NY TO MORICHES INLET NY OUT 20 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 97
VALID 211930Z - 212040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 E SBY TO
15 NE ACY TO 15 S JFK TO 20 NW BDR TO 25 ENE POU TO 40 NNW POU.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 404
..WENDT..04/21/21
ATTN...WFO...OKX...BOX...ALY...PHI...LWX...AKQ...
&&
STATUS REPORT FOR WS 97
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC001-003-005-007-009-011-013-015-212040-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
FAIRFIELD HARTFORD LITCHFIELD
MIDDLESEX NEW HAVEN NEW LONDON
TOLLAND WINDHAM
$$
MAC003-011-013-015-027-212040-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE FRANKLIN HAMPDEN
HAMPSHIRE WORCESTER
$$
NYC021-059-103-212040-
NY
. NEW YORK COUNTIES INCLUDED ARE
COLUMBIA NASSAU SUFFOLK
$$
ANZ331-332-340-345-350-353-355-450-451-452-212040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY TO THE
MOUTH OF THE CONNECTICUT RIVER
LONG ISLAND SOUND EAST OF THE MOUTH OF THE CONNECTICUT RIVER
PECONIC AND GARDINERS BAYS
SOUTH SHORE BAYS FROM JONES INLET THROUGH SHINNECOCK BAY
MORICHES INLET NY TO MONTAUK POINT NY OUT 20 NM
FIRE ISLAND INLET NY TO MORICHES INLET NY OUT 20 NM
SANDY HOOK NJ TO FIRE ISLAND INLET NY OUT 20 NM
COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM
COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20
NM
$$
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.
$$
STATUS REPORT #1 ON WW 97
VALID 211845Z - 211940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SSE NHK
TO 30 SSE NHK TO 25 NW SBY TO 25 NE DOV TO 20 NW ACY TO 20 SW EWR
TO 15 N EWR TO 10 WSW POU TO 30 SSW ALB.
..WENDT..04/21/21
ATTN...WFO...OKX...BOX...ALY...PHI...LWX...AKQ...
&&
STATUS REPORT FOR WS 97
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC001-003-005-007-009-011-013-015-211940-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
FAIRFIELD HARTFORD LITCHFIELD
MIDDLESEX NEW HAVEN NEW LONDON
TOLLAND WINDHAM
$$
DEC005-211940-
DE
. DELAWARE COUNTIES INCLUDED ARE
SUSSEX
$$
MDC039-045-047-211940-
MD
. MARYLAND COUNTIES INCLUDED ARE
SOMERSET WICOMICO WORCESTER
$$
MAC003-011-013-015-027-211940-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE FRANKLIN HAMPDEN
HAMPSHIRE WORCESTER
$$
NJC001-003-009-013-017-025-029-039-211940-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BERGEN CAPE MAY
ESSEX HUDSON MONMOUTH
OCEAN UNION
$$
NYC005-021-027-047-059-061-079-081-085-087-103-119-211940-
NY
. NEW YORK COUNTIES INCLUDED ARE
BRONX COLUMBIA DUTCHESS
KINGS NASSAU NEW YORK
PUTNAM QUEENS RICHMOND
ROCKLAND SUFFOLK WESTCHESTER
$$
ANZ331-332-335-338-340-345-350-353-355-431-450-451-452-453-454-
455-650-211940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY TO THE
MOUTH OF THE CONNECTICUT RIVER
LONG ISLAND SOUND EAST OF THE MOUTH OF THE CONNECTICUT RIVER
LONG ISLAND SOUND WEST OF NEW HAVEN CT/PORT JEFFERSON NY
NEW YORK HARBOR
PECONIC AND GARDINERS BAYS
SOUTH SHORE BAYS FROM JONES INLET THROUGH SHINNECOCK BAY
MORICHES INLET NY TO MONTAUK POINT NY OUT 20 NM
FIRE ISLAND INLET NY TO MORICHES INLET NY OUT 20 NM
SANDY HOOK NJ TO FIRE ISLAND INLET NY OUT 20 NM
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM
COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM
COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM
COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM
COASTAL WATERS FROM FENWICK ISLAND DE TO CHINCOTEAGUE VA OUT 20
NM
$$
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 (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (10%)
|
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% (EF2-EF5 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.