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.
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 396
NWS Storm Prediction Center Norman OK
245 PM EDT Tue Jul 27 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern Connecticut
Massachusetts
Southern New Hampshire
Eastern New York
Northeast Pennsylvania
Northern Rhode Island
Southern Vermont
Coastal Waters
* Effective this Tuesday afternoon and evening from 245 PM until
1000 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Fast-moving thunderstorms over central New York will track
eastward across the watch area this afternoon and evening. Damaging
winds will be possible with the strongest storms.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 45 miles north
northwest of Monticello NY to 10 miles southeast of Boston MA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU6).
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 395...
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 500. Mean storm motion vector
29035.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 396 SEVERE TSTM CT MA NH NY PA RI VT CW 271845Z - 280200Z
AXIS..55 STATUTE MILES NORTH AND SOUTH OF LINE..
45NNW MSV/MONTICELLO NY/ - 10SE BOS/BOSTON MA/
..AVIATION COORDS.. 50NM N/S /17NNE HNK - 8SE BOS/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 29035.
LAT...LON 43107514 43067086 41477086 41517514
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 396 Status Report Messages:
STATUS REPORT #3 ON WW 396
VALID 280025Z - 280140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNE BDR
TO 10 SSE BDL TO 20 WNW PVD TO 15 NNE PVD TO 10 E BOS TO 30 ENE
BOS.
..BENTLEY..07/28/21
ATTN...WFO...BOX...ALY...GYX...BGM...
&&
STATUS REPORT FOR WS 396
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC013-015-280140-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
TOLLAND WINDHAM
$$
MAC005-280140-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BRISTOL
$$
PAC127-280140-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
WAYNE
$$
RIC001-003-005-280140-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
$$
ANZ236-280140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
NARRAGANSETT BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 396
VALID 272335Z - 280040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SSE POU
TO 30 WSW BDL TO 15 ENE BDL TO 15 NE ORH TO 15 SSE PSM.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1367
..BENTLEY..07/27/21
ATTN...WFO...BOX...ALY...GYX...BGM...
&&
STATUS REPORT FOR WS 396
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC003-005-013-015-280040-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
HARTFORD LITCHFIELD TOLLAND
WINDHAM
$$
MAC005-009-017-021-023-025-280040-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BRISTOL ESSEX MIDDLESEX
NORFOLK PLYMOUTH SUFFOLK
$$
PAC103-127-280040-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
PIKE WAYNE
$$
RIC001-003-005-007-280040-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
PROVIDENCE
$$
ANZ230-236-280040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
NARRAGANSETT BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 396
VALID 272130Z - 272240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW MSV
TO 30 NNE MSV TO 15 SSW ALB TO 10 ENE ALB TO 30 SE GFL TO 20 SE
RUT.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1366
..BENTLEY..07/27/21
ATTN...WFO...BOX...ALY...GYX...BGM...
&&
STATUS REPORT FOR WS 396
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC003-005-013-015-272240-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
HARTFORD LITCHFIELD TOLLAND
WINDHAM
$$
MAC003-005-009-011-013-015-017-021-023-025-027-272240-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE BRISTOL ESSEX
FRANKLIN HAMPDEN HAMPSHIRE
MIDDLESEX NORFOLK PLYMOUTH
SUFFOLK WORCESTER
$$
NHC005-011-272240-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
CHESHIRE HILLSBOROUGH
$$
NYC021-027-039-083-105-111-272240-
NY
. NEW YORK COUNTIES INCLUDED ARE
COLUMBIA DUTCHESS GREENE
RENSSELAER SULLIVAN ULSTER
$$
PAC103-127-272240-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
PIKE WAYNE
$$
RIC001-003-005-007-272240-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
PROVIDENCE
$$
VTC003-025-272240-
VT
. VERMONT COUNTIES INCLUDED ARE
BENNINGTON WINDHAM
$$
ANZ230-236-272240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
NARRAGANSETT BAY
$$
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 (40%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Low (10%)
|
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.