Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 512
NWS Storm Prediction Center Norman OK
730 PM EST Sun Nov 15 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Connecticut
Massachusetts
Exteme northeastern New Jersey
Southeastern New York
Rhode Island
Coastal Waters
* Effective this Sunday night and Monday morning from 730 PM until
200 AM EST.
THUNDERSTORM WIND GUSTS TO 70 MPH...and DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
The severe thunderstorm watch area is approximately along and 95
statute miles east and west of a line from 25 miles northeast of
Worcester MA to 15 miles south southwest of Islip NY. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).
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 511...
AVIATION...A few severe thunderstorms with hail surface and aloft to
0 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 250. Mean storm motion vector
26045.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW2
WW 512 SEVERE TSTM CT MA NJ NY RI CW 160030Z - 160700Z
AXIS..95 STATUTE MILES EAST AND WEST OF LINE..
25NE ORH/WORCESTER MA/ - 15SSW ISP/ISLIP NY/
..AVIATION COORDS.. 80NM E/W /26WNW BOS - 26E JFK/
WIND GUSTS..60 KNOTS.
MAX TOPS TO 250.MEAN STORM MOTION VECTOR 26045.
LAT...LON 42516967 40587139 40587501 42517340
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU2.
Watch 512 Status Report Messages:
STATUS REPORT #3 ON WW 512
VALID 160430Z - 160540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 SSW BID
TO 20 NE BID TO 20 NNE PVD TO 10 NNW BOS.
..SPC..11/16/20
ATTN...WFO...OKX...BOX...ALY...
&&
STATUS REPORT FOR WS 512
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MAC001-005-007-009-019-021-023-025-160540-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BARNSTABLE BRISTOL DUKES
ESSEX NANTUCKET NORFOLK
PLYMOUTH SUFFOLK
$$
RIC001-005-160540-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL NEWPORT
$$
ANZ230-231-232-233-234-235-236-250-251-254-255-256-160540-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
CAPE COD BAY
NANTUCKET SOUND
VINEYARD SOUND
BUZZARDS BAY
RHODE ISLAND SOUND
NARRAGANSETT BAY
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY
MASSACHUSETTS BAY AND IPSWICH BAY
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 512
VALID 160255Z - 160340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SW ISP TO
20 NE BDR TO 25 NNE BAF.
..SPC..11/16/20
ATTN...WFO...OKX...BOX...ALY...
&&
STATUS REPORT FOR WS 512
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC003-007-009-011-013-015-160340-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
HARTFORD MIDDLESEX NEW HAVEN
NEW LONDON TOLLAND WINDHAM
$$
MAC001-005-007-009-013-015-017-019-021-023-025-027-160340-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BARNSTABLE BRISTOL DUKES
ESSEX HAMPDEN HAMPSHIRE
MIDDLESEX NANTUCKET NORFOLK
PLYMOUTH SUFFOLK WORCESTER
$$
NYC103-160340-
NY
. NEW YORK COUNTIES INCLUDED ARE
SUFFOLK
$$
RIC001-003-005-007-009-160340-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
PROVIDENCE WASHINGTON
$$
ANZ230-231-232-233-234-235-236-237-250-251-254-255-256-330-340-
345-350-353-160340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
CAPE COD BAY
NANTUCKET SOUND
VINEYARD SOUND
BUZZARDS BAY
RHODE ISLAND SOUND
NARRAGANSETT BAY
BLOCK ISLAND SOUND
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY
MASSACHUSETTS BAY AND IPSWICH BAY
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND
LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY
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
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 512
VALID 160210Z - 160340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 SW JFK TO
20 WNW BDR TO 35 S PSF TO 10 W PSF.
..SPC..11/16/20
ATTN...WFO...OKX...BOX...ALY...
&&
STATUS REPORT FOR WS 512
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC001-003-005-007-009-011-013-015-160340-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
FAIRFIELD HARTFORD LITCHFIELD
MIDDLESEX NEW HAVEN NEW LONDON
TOLLAND WINDHAM
$$
MAC001-003-005-007-009-011-013-015-017-019-021-023-025-027-
160340-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BARNSTABLE BERKSHIRE BRISTOL
DUKES ESSEX FRANKLIN
HAMPDEN HAMPSHIRE MIDDLESEX
NANTUCKET NORFOLK PLYMOUTH
SUFFOLK WORCESTER
$$
NYC059-103-160340-
NY
. NEW YORK COUNTIES INCLUDED ARE
NASSAU SUFFOLK
$$
RIC001-003-005-007-009-160340-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
PROVIDENCE WASHINGTON
$$
ANZ230-231-232-233-234-235-236-237-250-251-254-255-256-330-335-
340-345-350-353-355-160340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
CAPE COD BAY
NANTUCKET SOUND
VINEYARD SOUND
BUZZARDS BAY
RHODE ISLAND SOUND
NARRAGANSETT BAY
BLOCK ISLAND SOUND
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY
MASSACHUSETTS BAY AND IPSWICH BAY
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND
LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY
LONG ISLAND SOUND WEST OF NEW HAVEN CT/PORT JEFFERSON NY
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
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
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 (60%)
|
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.