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Upstate/Eastern New York


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18 minutes ago, SouthBuffaloSteve said:

Timing pushed back a bit?  Was looking like a midday to afternoon event for WNY now more like an evening timeframe?  Might tend to better chance for some severe storms vs just the heavy downpours…

Getting sunshine here. Prime conditions this afternoon for some good stuff away from lake breeze.

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Otherwise, appears primary period of convection will form by mid
afternoon ahead of shortwave/stronger moisture transport lifting in
from Ohio. This forcing will combine with lake breezes and start to
tap into MLCAPE up to 2000 j/kg and effective shear up to 30 kts if
not more southeast/east of Lake Ontario to support developing
clusters of thunderstorms. Southeast Lake Ontario region and WNY
will see storms first, but all areas will eventually see likely
thunderstorms 21z-02z. Given continual high wbzero heights 13kft and
very high PWATS toward 2 inches, main severe hazard will be damaging
wind gusts. Torrential downpours expected too, but storms will be
moving more so than last couple days. Thus, main flooding potential
will be if storms train resulting in multiple episodes of heavy rain
at one spot. Considered flash flood watch east of Lake Ontario where
majority of high res guidance indicates heaviest rain occurs closer
to warm front into this evening, but since those ares didn`t see
widespread heavy rain last night (few spots saw 0.60-1.00) plan is
to handle flash flooding hazard with warnings if needed. Majority of
thunderstorm activity wanes mid evening onward, first over WNY then
by late evening east of Lake Ontario. SPC continues to highlight
majority of forecast area in a slight risk/scattered severe
convection and WPC continues to highlight much of area in slight
risk of excessive rainfall.
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BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Binghamton NY
1223 PM EDT Tue Jul 13 2021

The National Weather Service in Binghamton has issued a

* Severe Thunderstorm Warning for...
  Central Oneida County in central New York...
  Northwestern Madison County in central New York...

* Until 115 PM EDT.

* At 1221 PM EDT, a severe thunderstorm was located near Verona
  Beach, or near Oneida, moving northeast at 35 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, and trees possible.

* Locations impacted include...
  Rome, Oneida, Lee, Verona, Vienna, Canastota, Floyd, Oriskany,
  Sylvan Beach and Wampsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...


50F50B7F-D61B-4205-A459-47F303DE6D5F.thumb.png.8031a5c7310374cc50d0277edc3094e3.png

 

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SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 375
NWS STORM PREDICTION CENTER NORMAN OK
135 PM EDT TUE JUL 13 2021

SEVERE THUNDERSTORM WATCH 375 IS IN EFFECT UNTIL 1100 PM EDT
FOR THE FOLLOWING LOCATIONS

NYC003-007-009-011-013-015-017-023-029-037-043-045-049-051-053-
055-063-065-067-069-073-075-097-099-101-107-109-117-121-123-
140300-
/O.NEW.KWNS.SV.A.0375.210713T1735Z-210714T0300Z/

NY
.    NEW YORK COUNTIES INCLUDED ARE

ALLEGANY             BROOME              CATTARAUGUS
CAYUGA               CHAUTAUQUA          CHEMUNG
CHENANGO             CORTLAND            ERIE
GENESEE              HERKIMER            JEFFERSON
LEWIS                LIVINGSTON          MADISON
MONROE               NIAGARA             ONEIDA
ONONDAGA             ONTARIO             ORLEANS
OSWEGO               SCHUYLER            SENECA
STEUBEN              TIOGA               TOMPKINS
WAYNE                WYOMING             YATES
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   * Primary threats include...
     Scattered damaging wind gusts to 70 mph possible
     Isolated large hail events to 1.5 inches in diameter possible
     A tornado or two possible

   SUMMARY...Storms are expected to develop across Pennsylvania and New
   York into the afternoon and early evening. The stronger storms will
   become capable of producing locally strong to damaging wind gusts
   and possibly some hail. A tornado or two also cannot be ruled out.

   The severe thunderstorm watch area is approximately along and 90
   statute miles east and west of a line from 60 miles north northwest
   of Syracuse NY to 25 miles west of Hagerstown MD. For a complete
   depiction of the watch see the associated watch outline update
   (WOUS64 KWNS WOU5).

 

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4 minutes ago, wolfie09 said:
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 375
NWS STORM PREDICTION CENTER NORMAN OK
135 PM EDT TUE JUL 13 2021

SEVERE THUNDERSTORM WATCH 375 IS IN EFFECT UNTIL 1100 PM EDT
FOR THE FOLLOWING LOCATIONS

NYC003-007-009-011-013-015-017-023-029-037-043-045-049-051-053-
055-063-065-067-069-073-075-097-099-101-107-109-117-121-123-
140300-
/O.NEW.KWNS.SV.A.0375.210713T1735Z-210714T0300Z/

NY
.    NEW YORK COUNTIES INCLUDED ARE

ALLEGANY             BROOME              CATTARAUGUS
CAYUGA               CHAUTAUQUA          CHEMUNG
CHENANGO             CORTLAND            ERIE
GENESEE              HERKIMER            JEFFERSON
LEWIS                LIVINGSTON          MADISON
MONROE               NIAGARA             ONEIDA
ONONDAGA             ONTARIO             ORLEANS
OSWEGO               SCHUYLER            SENECA
STEUBEN              TIOGA               TOMPKINS
WAYNE                WYOMING             YATES

easy call

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN ERIE AND SOUTH
CENTRAL NIAGARA COUNTIES...

At 127 PM EDT, a strong thunderstorm was located over Small Boat
Harbor, or over Lackawanna, moving northeast at 20 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.
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SUMMARY...The severe threat continues across WW 375, with damaging
   winds the main threat.

   DISCUSSION...Regional satellite/radar depicts a few isolated storms
   over portions of southern New York and vicinity. Updrafts have
   largely been transient thus far, likely due to modest mid-level
   lapse rates amid abundant shear. However, recent scans/imagery
   suggest the intensity of these storms may be increasing somewhat as
   low-level lapse rates over the region remain supportive for
   convective development amid a weak cap.

   Farther west, a cluster of severe storms has emerged across portions
   of western Pennsylvania, with several damaging wind reports. This
   band of convection appears to be associated with a mid-level
   short-wave evident at 700 mb. Short-term convection-allowing models
   suggest these storms should continue moving northeast into western
   portions of the watch area across northwest Pennsylvania and
   southwestern New York. Additional storm development is possible
   along the southern flank of the line as the mid-level wave and
   associated ascent progresses through the region for the remainder of
   the afternoon and evening.  Damaging winds remain the primary
   hazard, but severe hail and a tornado or two are possible,
   particularly with any discrete/supercell modes that may emerge.
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Just now, wolfie09 said:
SUMMARY...The severe threat continues across WW 375, with damaging
   winds the main threat.

   DISCUSSION...Regional satellite/radar depicts a few isolated storms
   over portions of southern New York and vicinity. Updrafts have
   largely been transient thus far, likely due to modest mid-level
   lapse rates amid abundant shear. However, recent scans/imagery
   suggest the intensity of these storms may be increasing somewhat as
   low-level lapse rates over the region remain supportive for
   convective development amid a weak cap.

   Farther west, a cluster of severe storms has emerged across portions
   of western Pennsylvania, with several damaging wind reports. This
   band of convection appears to be associated with a mid-level
   short-wave evident at 700 mb. Short-term convection-allowing models
   suggest these storms should continue moving northeast into western
   portions of the watch area across northwest Pennsylvania and
   southwestern New York. Additional storm development is possible
   along the southern flank of the line as the mid-level wave and
   associated ascent progresses through the region for the remainder of
   the afternoon and evening.  Damaging winds remain the primary
   hazard, but severe hail and a tornado or two are possible,
   particularly with any discrete/supercell modes that may emerge.

good stuff, I'm taking my drone out over the lake if we can get a good shelf cloud.

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