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.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 321
NWS STORM PREDICTION CENTER NORMAN OK
115 PM EDT MON JUN 17 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CONNECTICUT
MASSACHUSETTS
SOUTHERN NEW HAMPSHIRE
EASTERN NEW YORK
RHODE ISLAND
SOUTHERN VERMONT
COASTAL WATERS
* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 115 PM UNTIL
900 PM EDT.
* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES NORTH
NORTHWEST OF MONTICELLO NEW YORK TO 15 MILES EAST OF BOSTON
MASSACHUSETTS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
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.
&&
DISCUSSION...THUNDERSTORMS WILL CONTINUE TO INCREASE AND INTENSIFY
THIS AFTERNOON AHEAD OF A COLD FRONT. WHILE MOISTURE/INSTABILITY IS
RELATIVELY MODEST...STRONG LOW TO MID-LEVEL WESTERLY WINDS WILL
ALLOW FOR THE MATURATION OF EAST-SOUTHEASTWARD MOVING MULTICELLULAR
LINE SEGMENTS/SMALL BOWS CAPABLE OF WIND DAMAGE ASIDE FROM SEVERE
HAIL.
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 28030.
...GUYER
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 321 SEVERE TSTM CT MA NH NY RI VT CW 171715Z - 180100Z
AXIS..70 STATUTE MILES NORTH AND SOUTH OF LINE..
60NNW MSV/MONTICELLO NY/ - 15E BOS/BOSTON MA/
..AVIATION COORDS.. 60NM N/S /27N HNK - 13E BOS/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 28030.
LAT...LON 43507525 43387070 41367070 41497525
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 321 Status Report Messages:
STATUS REPORT #4 ON WW 321
VALID 172145Z - 172240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 S MSV TO
15 NE POU TO 20 NNE ORH TO 50 ESE PSM.
..ROGERS..06/17/13
ATTN...WFO...OKX...BOX...ALY...GYX...BGM...
&&
STATUS REPORT FOR WS 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC001-003-007-009-011-013-015-172240-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
FAIRFIELD HARTFORD MIDDLESEX
NEW HAVEN NEW LONDON TOLLAND
WINDHAM
$$
MAC005-013-015-017-021-023-025-027-172240-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BRISTOL HAMPDEN HAMPSHIRE
MIDDLESEX NORFOLK PLYMOUTH
SUFFOLK WORCESTER
$$
NYC071-079-087-119-172240-
NY
. NEW YORK COUNTIES INCLUDED ARE
ORANGE PUTNAM ROCKLAND
WESTCHESTER
$$
RIC001-003-005-007-009-172240-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
PROVIDENCE WASHINGTON
$$
ANZ230-236-237-250-251-172240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
NARRAGANSETT BAY
BLOCK ISLAND SOUND
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY
MASSACHUSETTS BAY AND IPSWICH 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 #3 ON WW 321
VALID 172050Z - 172140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SE MSV TO
10 ESE PSF TO 10 S EEN TO 15 SSE PSM.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1111
..THOMPSON..06/17/13
ATTN...WFO...OKX...BOX...ALY...GYX...BGM...
&&
STATUS REPORT FOR WS 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC001-003-005-007-009-011-013-015-172140-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
FAIRFIELD HARTFORD LITCHFIELD
MIDDLESEX NEW HAVEN NEW LONDON
TOLLAND WINDHAM
$$
MAC003-005-009-011-013-015-017-021-023-025-027-172140-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE BRISTOL ESSEX
FRANKLIN HAMPDEN HAMPSHIRE
MIDDLESEX NORFOLK PLYMOUTH
SUFFOLK WORCESTER
$$
NYC027-071-079-087-119-172140-
NY
. NEW YORK COUNTIES INCLUDED ARE
DUTCHESS ORANGE PUTNAM
ROCKLAND WESTCHESTER
$$
RIC001-003-005-007-009-172140-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
PROVIDENCE WASHINGTON
$$
ANZ230-236-237-250-251-172140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
NARRAGANSETT BAY
BLOCK ISLAND SOUND
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY
MASSACHUSETTS BAY AND IPSWICH 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 321
VALID 171950Z - 172040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SSE UCA
TO 30 ENE ALB TO 15 SSE LCI.
..THOMPSON..06/17/13
ATTN...WFO...OKX...BOX...ALY...GYX...BGM...
&&
STATUS REPORT FOR WS 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC001-003-005-007-009-011-013-015-172040-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
FAIRFIELD HARTFORD LITCHFIELD
MIDDLESEX NEW HAVEN NEW LONDON
TOLLAND WINDHAM
$$
MAC003-005-009-011-013-015-017-021-023-025-027-172040-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE BRISTOL ESSEX
FRANKLIN HAMPDEN HAMPSHIRE
MIDDLESEX NORFOLK PLYMOUTH
SUFFOLK WORCESTER
$$
NHC005-011-015-172040-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
CHESHIRE HILLSBOROUGH ROCKINGHAM
$$
NYC001-007-017-021-025-027-039-053-071-077-079-083-087-093-095-
105-111-119-172040-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALBANY BROOME CHENANGO
COLUMBIA DELAWARE DUTCHESS
GREENE MADISON ORANGE
OTSEGO PUTNAM RENSSELAER
ROCKLAND SCHENECTADY SCHOHARIE
SULLIVAN ULSTER WESTCHESTER
$$
RIC001-003-005-007-009-172040-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
PROVIDENCE WASHINGTON
$$
VTC003-025-172040-
VT
. VERMONT COUNTIES INCLUDED ARE
BENNINGTON WINDHAM
$$
ANZ230-236-237-250-251-172040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
NARRAGANSETT BAY
BLOCK ISLAND SOUND
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY
MASSACHUSETTS BAY AND IPSWICH 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 321
VALID 171840Z - 171940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..THOMPSON..06/17/13
ATTN...WFO...OKX...BOX...ALY...GYX...BGM...
&&
STATUS REPORT FOR WS 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC001-003-005-007-009-011-013-015-171940-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
FAIRFIELD HARTFORD LITCHFIELD
MIDDLESEX NEW HAVEN NEW LONDON
TOLLAND WINDHAM
$$
MAC003-005-009-011-013-015-017-021-023-025-027-171940-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE BRISTOL ESSEX
FRANKLIN HAMPDEN HAMPSHIRE
MIDDLESEX NORFOLK PLYMOUTH
SUFFOLK WORCESTER
$$
NHC005-011-013-015-019-171940-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
CHESHIRE HILLSBOROUGH MERRIMACK
ROCKINGHAM SULLIVAN
$$
NYC001-007-017-021-025-027-035-039-041-043-053-057-065-071-077-
079-083-087-091-093-095-105-111-113-115-119-171940-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALBANY BROOME CHENANGO
COLUMBIA DELAWARE DUTCHESS
FULTON GREENE HAMILTON
HERKIMER MADISON MONTGOMERY
ONEIDA ORANGE OTSEGO
PUTNAM RENSSELAER ROCKLAND
SARATOGA SCHENECTADY SCHOHARIE
SULLIVAN ULSTER WARREN
WASHINGTON WESTCHESTER
$$
RIC001-003-005-007-009-171940-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
BRISTOL KENT NEWPORT
PROVIDENCE WASHINGTON
$$
VTC003-025-171940-
VT
. VERMONT COUNTIES INCLUDED ARE
BENNINGTON WINDHAM
$$
ANZ230-236-237-250-251-171940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
NARRAGANSETT BAY
BLOCK ISLAND SOUND
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY
MASSACHUSETTS BAY AND IPSWICH 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 (10%)
|
Probability of 1 or more strong (F2-F5) 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
|
Mod (30%)
|
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 (80%)
|
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.