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.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 212
NWS STORM PREDICTION CENTER NORMAN OK
340 PM EDT WED MAY 22 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN NEW YORK
NORTHEASTERN PENNSYLVANIA
LAKE ERIE
LAKE ONTARIO
* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 340 PM
UNTIL 1100 PM EDT.
* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
A FEW TORNADOES POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES WEST OF
BUFFALO NEW YORK TO 15 MILES SOUTHEAST OF UTICA NEW YORK. 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 210...WW 211...
DISCUSSION...LARGE-SCALE FORCING FOR UPWARD VERTICAL MOTION AHEAD OF
A SHORT WAVE IMPULSE MOVING NORTHEAST OF THE LOWER OHIO VALLEY IS
EXPECTED TO CONTRIBUTE TO INCREASING THUNDERSTORM DEVELOPMENT LATE
THIS AFTERNOON AND EVENING. IN THE PRESENCE OF WEAK TO MODERATE
INSTABILITY...DEEP LAYER SHEAR WILL BE SUPPORTIVE OF ORGANIZED
CONVECTIVE DEVELOPMENT. A WINDOW OF OPPORTUNITY APPEARS TO EXIST
FOR DISCRETE SUPERCELL DEVELOPMENT...AS SOUTHERLY 850 MB FLOW
STRENGTHENS...WITH ONE OR TWO TORNADOES NOT OUT OF THE QUESTION.
HOWEVER...THIS THREAT IS EXPECTED TO BE SHORT-LIVED AND FAIRLY
LOCALIZED...AS BOUNDARY LAYER MIXING HAS RESULTED IN SIZABLE
TEMPERATURE/DEW POINT SPREADS...WHICH PROBABLY WILL ALLOW OUTFLOW TO
QUICKLY UNDERCUT MESOCYLONES.
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 500. MEAN STORM
MOTION VECTOR 26035.
...KERR
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW2
WW 212 SEVERE TSTM NY PA LE LO 221940Z - 230300Z
AXIS..70 STATUTE MILES NORTH AND SOUTH OF LINE..
30W BUF/BUFFALO NY/ - 15SE UCA/UTICA NY/
..AVIATION COORDS.. 60NM N/S /30W BUF - 46ESE SYR/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 26035.
LAT...LON 43937931 44007516 41977516 41917931
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU2.
Watch 212 Status Report Messages:
STATUS REPORT #4 ON WW 212
VALID 230050Z - 230140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..05/23/13
ATTN...WFO...BUF...BGM...
&&
STATUS REPORT FOR WS 212
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NYC003-007-009-011-013-015-017-023-025-045-049-051-053-055-065-
067-069-075-077-097-099-101-105-107-109-117-121-123-230140-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALLEGANY BROOME CATTARAUGUS
CAYUGA CHAUTAUQUA CHEMUNG
CHENANGO CORTLAND DELAWARE
JEFFERSON LEWIS LIVINGSTON
MADISON MONROE ONEIDA
ONONDAGA ONTARIO OSWEGO
OTSEGO SCHUYLER SENECA
STEUBEN SULLIVAN TIOGA
TOMPKINS WAYNE WYOMING
YATES
$$
PAC015-115-127-230140-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BRADFORD SUSQUEHANNA WAYNE
$$
LEZ020-LOZ043-044-045-063-064-065-230140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
HAMLIN BEACH TO SODUS BAY NY
SODUS BAY TO MEXICO BAY NY
MEXICO BAY NY TO THE ST. LAWRENCE RIVER
HAMLIN BEACH TO SODUS BAY NY BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
SODUS BAY TO MEXICO BAY NY BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
MEXICO BAY NY TO THE ST. LAWRENCE RIVER BEYOND 5NM OFF SHORELINE
TO US-CANADIAN BORDER
UPPER NIAGARA RIVER AND BUFFALO HARBOR
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 212
VALID 222130Z - 222240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..05/22/13
ATTN...WFO...BUF...BGM...
&&
STATUS REPORT FOR WS 212
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NYC003-007-009-011-013-015-017-023-025-045-049-051-053-055-065-
067-069-075-077-097-099-101-105-107-109-117-121-123-222240-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALLEGANY BROOME CATTARAUGUS
CAYUGA CHAUTAUQUA CHEMUNG
CHENANGO CORTLAND DELAWARE
JEFFERSON LEWIS LIVINGSTON
MADISON MONROE ONEIDA
ONONDAGA ONTARIO OSWEGO
OTSEGO SCHUYLER SENECA
STEUBEN SULLIVAN TIOGA
TOMPKINS WAYNE WYOMING
YATES
$$
PAC015-115-127-222240-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BRADFORD SUSQUEHANNA WAYNE
$$
LEZ020-LOZ043-044-045-063-064-065-222240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
HAMLIN BEACH TO SODUS BAY NY
SODUS BAY TO MEXICO BAY NY
MEXICO BAY NY TO THE ST. LAWRENCE RIVER
HAMLIN BEACH TO SODUS BAY NY BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
SODUS BAY TO MEXICO BAY NY BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
MEXICO BAY NY TO THE ST. LAWRENCE RIVER BEYOND 5NM OFF SHORELINE
TO US-CANADIAN BORDER
UPPER NIAGARA RIVER AND BUFFALO HARBOR
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 212
VALID 222130Z - 222240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..05/22/13
ATTN...WFO...BUF...BGM...
&&
STATUS REPORT FOR WS 212
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NYC003-007-009-011-013-015-017-023-025-045-049-051-053-055-065-
067-069-075-077-097-099-101-105-107-109-117-121-123-222240-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALLEGANY BROOME CATTARAUGUS
CAYUGA CHAUTAUQUA CHEMUNG
CHENANGO CORTLAND DELAWARE
JEFFERSON LEWIS LIVINGSTON
MADISON MONROE ONEIDA
ONONDAGA ONTARIO OSWEGO
OTSEGO SCHUYLER SENECA
STEUBEN SULLIVAN TIOGA
TOMPKINS WAYNE WYOMING
YATES
$$
PAC015-115-127-222240-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BRADFORD SUSQUEHANNA WAYNE
$$
LEZ020-LOZ043-044-045-063-064-065-222240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
HAMLIN BEACH TO SODUS BAY NY
SODUS BAY TO MEXICO BAY NY
MEXICO BAY NY TO THE ST. LAWRENCE RIVER
HAMLIN BEACH TO SODUS BAY NY BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
SODUS BAY TO MEXICO BAY NY BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
MEXICO BAY NY TO THE ST. LAWRENCE RIVER BEYOND 5NM OFF SHORELINE
TO US-CANADIAN BORDER
UPPER NIAGARA RIVER AND BUFFALO HARBOR
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 212
VALID 222030Z - 222140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SPC..05/22/13
ATTN...WFO...BUF...BGM...
&&
STATUS REPORT FOR WS 212
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NYC003-007-009-011-013-015-017-023-025-045-049-051-053-055-065-
067-069-075-077-097-099-101-105-107-109-117-121-123-222140-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALLEGANY BROOME CATTARAUGUS
CAYUGA CHAUTAUQUA CHEMUNG
CHENANGO CORTLAND DELAWARE
JEFFERSON LEWIS LIVINGSTON
MADISON MONROE ONEIDA
ONONDAGA ONTARIO OSWEGO
OTSEGO SCHUYLER SENECA
STEUBEN SULLIVAN TIOGA
TOMPKINS WAYNE WYOMING
YATES
$$
PAC015-115-127-222140-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BRADFORD SUSQUEHANNA WAYNE
$$
LEZ020-LOZ043-044-045-063-064-065-222140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
HAMLIN BEACH TO SODUS BAY NY
SODUS BAY TO MEXICO BAY NY
MEXICO BAY NY TO THE ST. LAWRENCE RIVER
HAMLIN BEACH TO SODUS BAY NY BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
SODUS BAY TO MEXICO BAY NY BEYOND 5NM OFF SHORELINE TO
US-CANADIAN BORDER
MEXICO BAY NY TO THE ST. LAWRENCE RIVER BEYOND 5NM OFF SHORELINE
TO US-CANADIAN BORDER
UPPER NIAGARA RIVER AND BUFFALO HARBOR
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (<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
|
Mod (40%)
|
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 (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.