Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 550
NWS STORM PREDICTION CENTER NORMAN OK
1130 AM EDT MON JUN 16 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
PARTS OF NORTHWESTERN CONNECTICUT
PARTS OF WESTERN MASSACHUSETTS
MUCH OF NEW YORK
LARGE PART OF NORTHERN AND WESTERN PENNSYLVANIA
LARGE PART OF VERMONT
EFFECTIVE THIS MONDAY MORNING AND EVENING FROM 1130 AM UNTIL 700
PM EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 100
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH
NORTHWEST OF PITTSBURGH PENNSYLVANIA TO RUTLAND VERMONT. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).
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 549...
DISCUSSION...AIR MASS HAS BECOME MODERATELY UNSTABLE AND WEAKLY
CAPPED AS STRONG HEATING OCCURS AHEAD OF COOL UPPER TROUGH
TRAVERSING THE WATCH AREA THIS AFTERNOON. THUNDERSTORMS SHOULD
INCREASE IN NUMBER AND INTENSITY BY EARLY AFTERNOON ACROSS THE WATCH
WITH CONDITIONS FAVORABLE FOR BOTH DAMAGING WINDS AND LARGE HAIL
WITH THE STRONGER STORMS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27030.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 550 SEVERE TSTM CT MA NY PA VT 161530Z - 162300Z
AXIS..100 STATUTE MILES NORTH AND SOUTH OF LINE..
30NNW PIT/PITTSBURGH PA/ - RUT/RUTLAND VT/
..AVIATION COORDS.. 85NM N/S /12WNW EWC - 45SSW MPV/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27030.
LAT...LON 42348044 44977294 42087294 39458044
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 550 Status Report Messages:
STATUS REPORT #5 ON WW 550
VALID 162235Z - 162300Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNW HLG
TO 15 NNE DUJ TO 30 W ELM TO 15 NNW ELM TO 30 WNW ITH TO 25 SE
ROC TO ROC TO 25 N ROC.
WW 550 WILL BE ALLOWED TO EXPIRE AT 162300Z.
..BRIGHT..06/16/08
ATTN...WFO...ALY...BUF...BGM...BTV...PBZ...CTP...CLE...
&&
STATUS REPORT FOR WS 550
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC005-162300-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
LITCHFIELD
$$
MDC023-162300-
MD
. MARYLAND COUNTIES INCLUDED ARE
GARRETT
$$
MAC003-162300-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE
$$
NYC001-007-011-015-017-019-021-023-025-027-031-033-035-039-041-
043-049-053-055-057-065-067-069-075-077-083-089-091-093-095-097-
099-105-107-109-111-113-115-117-162300-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALBANY BROOME CAYUGA
CHEMUNG CHENANGO CLINTON
COLUMBIA CORTLAND DELAWARE
DUTCHESS ESSEX FRANKLIN
FULTON GREENE HAMILTON
HERKIMER LEWIS MADISON
MONROE MONTGOMERY ONEIDA
ONONDAGA ONTARIO OSWEGO
OTSEGO RENSSELAER ST. LAWRENCE
SARATOGA SCHENECTADY SCHOHARIE
SCHUYLER SENECA SULLIVAN
TIOGA TOMPKINS ULSTER
WARREN WASHINGTON WAYNE
$$
PAC003-005-007-009-013-015-019-021-023-027-031-033-035-037-047-
051-059-061-063-065-069-079-081-087-093-097-103-105-109-111-113-
115-117-119-125-127-129-131-162300-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
ALLEGHENY ARMSTRONG BEAVER
BEDFORD BLAIR BRADFORD
BUTLER CAMBRIA CAMERON
CENTRE CLARION CLEARFIELD
CLINTON COLUMBIA ELK
FAYETTE GREENE HUNTINGDON
INDIANA JEFFERSON LACKAWANNA
LUZERNE LYCOMING MIFFLIN
MONTOUR NORTHUMBERLAND PIKE
POTTER SNYDER SOMERSET
SULLIVAN SUSQUEHANNA TIOGA
UNION WASHINGTON WAYNE
WESTMORELAND WYOMING
$$
VTC001-003-005-007-009-011-013-015-017-019-021-023-025-027-
162300-
VT
. VERMONT COUNTIES INCLUDED ARE
ADDISON BENNINGTON CALEDONIA
CHITTENDEN ESSEX FRANKLIN
GRAND ISLE LAMOILLE ORANGE
ORLEANS RUTLAND WASHINGTON
WINDHAM WINDSOR
$$
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.
$$
STATUS REPORT #4 ON WW 550
VALID 162130Z - 162240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S YNG TO
5 SSW BFD TO 40 W ELM TO 20 SSE ROC TO 5 S ROC TO 20 N ROC.
..BRIGHT..06/16/08
ATTN...WFO...ALY...BUF...BGM...BTV...PBZ...CTP...CLE...
&&
STATUS REPORT FOR WS 550
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC005-162240-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
LITCHFIELD
$$
MDC023-162240-
MD
. MARYLAND COUNTIES INCLUDED ARE
GARRETT
$$
MAC003-162240-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE
$$
NYC001-007-011-015-017-019-021-023-025-027-031-033-035-039-041-
043-049-053-055-057-065-067-069-075-077-083-089-091-093-095-097-
099-101-105-107-109-111-113-115-117-123-162240-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALBANY BROOME CAYUGA
CHEMUNG CHENANGO CLINTON
COLUMBIA CORTLAND DELAWARE
DUTCHESS ESSEX FRANKLIN
FULTON GREENE HAMILTON
HERKIMER LEWIS MADISON
MONROE MONTGOMERY ONEIDA
ONONDAGA ONTARIO OSWEGO
OTSEGO RENSSELAER ST. LAWRENCE
SARATOGA SCHENECTADY SCHOHARIE
SCHUYLER SENECA STEUBEN
SULLIVAN TIOGA TOMPKINS
ULSTER WARREN WASHINGTON
WAYNE YATES
$$
PAC003-005-007-009-013-015-019-021-023-027-031-033-035-037-047-
051-053-059-061-063-065-069-073-079-081-083-087-093-097-103-105-
109-111-113-115-117-119-125-127-129-131-162240-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
ALLEGHENY ARMSTRONG BEAVER
BEDFORD BLAIR BRADFORD
BUTLER CAMBRIA CAMERON
CENTRE CLARION CLEARFIELD
CLINTON COLUMBIA ELK
FAYETTE FOREST GREENE
HUNTINGDON INDIANA JEFFERSON
LACKAWANNA LAWRENCE LUZERNE
LYCOMING MCKEAN MIFFLIN
MONTOUR NORTHUMBERLAND PIKE
POTTER SNYDER SOMERSET
SULLIVAN SUSQUEHANNA TIOGA
UNION WASHINGTON WAYNE
WESTMORELAND WYOMING
$$
VTC001-003-005-007-009-011-013-015-017-019-021-023-025-027-
162240-
VT
. VERMONT COUNTIES INCLUDED ARE
ADDISON BENNINGTON CALEDONIA
CHITTENDEN ESSEX FRANKLIN
GRAND ISLE LAMOILLE ORANGE
ORLEANS RUTLAND WASHINGTON
WINDHAM WINDSOR
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 550
VALID 162030Z - 162140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SSE YNG
TO 15 W BFD TO 45 S ROC TO 25 N ROC.
..BRIGHT..06/16/08
ATTN...WFO...ALY...BUF...BGM...BTV...PBZ...CTP...CLE...
&&
STATUS REPORT FOR WS 550
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC005-162140-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
LITCHFIELD
$$
MDC023-162140-
MD
. MARYLAND COUNTIES INCLUDED ARE
GARRETT
$$
MAC003-162140-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE
$$
NYC001-003-007-011-015-017-019-021-023-025-027-031-033-035-039-
041-043-049-051-053-055-057-065-067-069-075-077-083-089-091-093-
095-097-099-101-105-107-109-111-113-115-117-123-162140-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALBANY ALLEGANY BROOME
CAYUGA CHEMUNG CHENANGO
CLINTON COLUMBIA CORTLAND
DELAWARE DUTCHESS ESSEX
FRANKLIN FULTON GREENE
HAMILTON HERKIMER LEWIS
LIVINGSTON MADISON MONROE
MONTGOMERY ONEIDA ONONDAGA
ONTARIO OSWEGO OTSEGO
RENSSELAER ST. LAWRENCE SARATOGA
SCHENECTADY SCHOHARIE SCHUYLER
SENECA STEUBEN SULLIVAN
TIOGA TOMPKINS ULSTER
WARREN WASHINGTON WAYNE
YATES
$$
PAC003-005-007-009-013-015-019-021-023-027-031-033-035-037-047-
051-053-059-061-063-065-069-073-079-081-083-087-093-097-103-105-
109-111-113-115-117-119-121-125-127-129-131-162140-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
ALLEGHENY ARMSTRONG BEAVER
BEDFORD BLAIR BRADFORD
BUTLER CAMBRIA CAMERON
CENTRE CLARION CLEARFIELD
CLINTON COLUMBIA ELK
FAYETTE FOREST GREENE
HUNTINGDON INDIANA JEFFERSON
LACKAWANNA LAWRENCE LUZERNE
LYCOMING MCKEAN MIFFLIN
MONTOUR NORTHUMBERLAND PIKE
POTTER SNYDER SOMERSET
SULLIVAN SUSQUEHANNA TIOGA
UNION VENANGO WASHINGTON
WAYNE WESTMORELAND WYOMING
$$
VTC001-003-005-007-009-011-013-015-017-019-021-023-025-027-
162140-
VT
. VERMONT COUNTIES INCLUDED ARE
ADDISON BENNINGTON CALEDONIA
CHITTENDEN ESSEX FRANKLIN
GRAND ISLE LAMOILLE ORANGE
ORLEANS RUTLAND WASHINGTON
WINDHAM WINDSOR
$$
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.
$$
STATUS REPORT #2 ON WW 550
VALID 161935Z - 162040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 SSE YNG TO
25 S JHW TO 45 SE BUF TO 25 NW ROC.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1421
..BRIGHT..06/16/08
ATTN...WFO...ALY...BUF...BGM...BTV...PBZ...CTP...CLE...
&&
STATUS REPORT FOR WS 550
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC005-162040-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
LITCHFIELD
$$
MDC023-162040-
MD
. MARYLAND COUNTIES INCLUDED ARE
GARRETT
$$
MAC003-162040-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE
$$
NYC001-003-007-009-011-015-017-019-021-023-025-027-031-033-035-
039-041-043-049-051-053-055-057-065-067-069-075-077-083-089-091-
093-095-097-099-101-105-107-109-111-113-115-117-123-162040-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALBANY ALLEGANY BROOME
CATTARAUGUS CAYUGA CHEMUNG
CHENANGO CLINTON COLUMBIA
CORTLAND DELAWARE DUTCHESS
ESSEX FRANKLIN FULTON
GREENE HAMILTON HERKIMER
LEWIS LIVINGSTON MADISON
MONROE MONTGOMERY ONEIDA
ONONDAGA ONTARIO OSWEGO
OTSEGO RENSSELAER ST. LAWRENCE
SARATOGA SCHENECTADY SCHOHARIE
SCHUYLER SENECA STEUBEN
SULLIVAN TIOGA TOMPKINS
ULSTER WARREN WASHINGTON
WAYNE YATES
$$
PAC003-005-007-009-013-015-019-021-023-027-031-033-035-037-047-
051-053-059-061-063-065-069-073-079-081-083-085-087-093-097-103-
105-109-111-113-115-117-119-121-123-125-127-129-131-162040-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
ALLEGHENY ARMSTRONG BEAVER
BEDFORD BLAIR BRADFORD
BUTLER CAMBRIA CAMERON
CENTRE CLARION CLEARFIELD
CLINTON COLUMBIA ELK
FAYETTE FOREST GREENE
HUNTINGDON INDIANA JEFFERSON
LACKAWANNA LAWRENCE LUZERNE
LYCOMING MCKEAN MERCER
MIFFLIN MONTOUR NORTHUMBERLAND
PIKE POTTER SNYDER
SOMERSET SULLIVAN SUSQUEHANNA
TIOGA UNION VENANGO
WARREN WASHINGTON WAYNE
WESTMORELAND WYOMING
$$
VTC001-003-005-007-009-011-013-015-017-019-021-023-025-027-
162040-
VT
. VERMONT COUNTIES INCLUDED ARE
ADDISON BENNINGTON CALEDONIA
CHITTENDEN ESSEX FRANKLIN
GRAND ISLE LAMOILLE ORANGE
ORLEANS RUTLAND WASHINGTON
WINDHAM WINDSOR
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 550
VALID 161845Z - 161940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 N YNG TO
25 SE ERI TO 45 NNW JHW.
..BRIGHT..06/16/08
ATTN...WFO...ALY...BUF...BGM...BTV...PBZ...CTP...CLE...
&&
STATUS REPORT FOR WS 550
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC005-161940-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
LITCHFIELD
$$
MDC023-161940-
MD
. MARYLAND COUNTIES INCLUDED ARE
GARRETT
$$
MAC003-161940-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE
$$
NYC001-003-007-009-011-013-015-017-019-021-023-025-027-029-031-
033-035-037-039-041-043-049-051-053-055-057-065-067-069-075-077-
083-089-091-093-095-097-099-101-105-107-109-111-113-115-117-121-
123-161940-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALBANY ALLEGANY BROOME
CATTARAUGUS CAYUGA CHAUTAUQUA
CHEMUNG CHENANGO CLINTON
COLUMBIA CORTLAND DELAWARE
DUTCHESS ERIE ESSEX
FRANKLIN FULTON GENESEE
GREENE HAMILTON HERKIMER
LEWIS LIVINGSTON MADISON
MONROE MONTGOMERY ONEIDA
ONONDAGA ONTARIO OSWEGO
OTSEGO RENSSELAER ST. LAWRENCE
SARATOGA SCHENECTADY SCHOHARIE
SCHUYLER SENECA STEUBEN
SULLIVAN TIOGA TOMPKINS
ULSTER WARREN WASHINGTON
WAYNE WYOMING YATES
$$
PAC003-005-007-009-013-015-019-021-023-027-031-033-035-037-039-
047-051-053-059-061-063-065-069-073-079-081-083-085-087-093-097-
103-105-109-111-113-115-117-119-121-123-125-127-129-131-
161940-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
ALLEGHENY ARMSTRONG BEAVER
BEDFORD BLAIR BRADFORD
BUTLER CAMBRIA CAMERON
CENTRE CLARION CLEARFIELD
CLINTON COLUMBIA CRAWFORD
ELK FAYETTE FOREST
GREENE HUNTINGDON INDIANA
JEFFERSON LACKAWANNA LAWRENCE
LUZERNE LYCOMING MCKEAN
MERCER MIFFLIN MONTOUR
NORTHUMBERLAND PIKE POTTER
SNYDER SOMERSET SULLIVAN
SUSQUEHANNA TIOGA UNION
VENANGO WARREN WASHINGTON
WAYNE WESTMORELAND WYOMING
$$
VTC001-003-007-011-013-021-025-161940-
VT
. VERMONT COUNTIES INCLUDED ARE
ADDISON BENNINGTON CHITTENDEN
FRANKLIN GRAND ISLE RUTLAND
WINDHAM
$$
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 (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
High (80%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (90%)
|
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.