Alert archive / New York / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 106, NWS Buffalo, NY

November 15, 20204 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Nov 15, 2020, 4:51 PM EST for 4 counties in New York. It was in force for 54 min. 11 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Nov 15, 2020, 4:51 PM EST (21:51 UTC)
Expired
Nov 15, 2020, 5:45 PM EST
In force
54 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cayuga County, NY, Ontario County, NY, Oswego County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 124 km from the middle of the area, began a volume at 21:51 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Nov 15, 4:57 PM ESTTSTM WND DMG6 W Sodus, NYTREES AND POWER LINES DOWN.
Nov 15, 5:00 PM ESTTSTM WND DMGShortsville, NYLARGE TREE DOWN ON A FENCE.
Nov 15, 5:01 PM ESTTSTM WND DMG6 Nne Palmyra, NYTREES AND POWER LINES DOWN.
Nov 15, 5:07 PM ESTTSTM WND DMGSodus, NYTREES AND POWER LINES DOWN.
Nov 15, 5:10 PM ESTTSTM WND GST 634 Ne Manchester, NYMESONET STATION CLIF CLIFTON SPRINGS.
Nov 15, 5:25 PM ESTTSTM WND DMGWolcott, NYTREES AND POWER LINES DOWN.
Nov 15, 5:31 PM ESTTSTM WND DMGRed Creek, NYTREES AND POWER LINES DOWN.
Nov 15, 5:35 PM ESTTSTM WND DMG5 Wnw Cato, NYTREES AND POWER LINES DOWN.
Nov 15, 5:38 PM ESTTSTM WND DMG5 Sw Cato, NYTREES AND POWER LINES DOWN.
Nov 15, 5:38 PM ESTMARINE TSTM WIND 45Oswego, NY.
Nov 15, 5:38 PM ESTMARINE TSTM WIND 45Oswego, NY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 9 storm reports to this severe thunderstorm warning; the first came 6 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Nov 15, 1:57 PM ESTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.9 hours before the alert went out and 137 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2020-11-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2020-11-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 703 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1872 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
703 m²/s²
0-3 km storm-relative helicity
842 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

727 
WUUS51 KBUF 152151
SVRBUF
NYC011-069-075-117-152245-
/O.NEW.KBUF.SV.W.0106.201115T2151Z-201115T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
451 PM EST Sun Nov 15 2020

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Wayne County in western New York...
  Cayuga County in central New York...
  Southwestern Oswego County in central New York...
  Ontario County in western New York...

* Until 545 PM EST..

* At 450 PM EST, severe thunderstorms were located along a line 
  extending from near Webster to near Bristol, moving east at 60 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Oswego, Geneva, Canandaigua, Fair Haven, Ontario, Newark, 
  Williamson, Marion, Clifton Springs, Lyons and Palmyra.

 This includes Interstate 90 between exits 44 and 40.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4267 7750 4332 7728 4333 7714 4331 7697
      4335 7681 4354 7648 4311 7647 4310 7650
      4303 7649 4301 7696 4276 7698 4276 7731
      4265 7737 4265 7749
TIME...MOT...LOC 2150Z 259DEG 52KT 4324 7736 4261 7761 

HAIL...<.75IN
WIND...60MPH
 
$$

Hitchcock
3 follow-up statements
663 
WWUS51 KBUF 152212
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
512 PM EST Sun Nov 15 2020

NYC011-069-075-117-152245-
/O.CON.KBUF.SV.W.0106.000000T0000Z-201115T2245Z/
Wayne NY-Cayuga NY-Oswego NY-Ontario NY-
512 PM EST Sun Nov 15 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EST
FOR WAYNE...CAYUGA...SOUTHWESTERN OSWEGO AND NORTHEASTERN ONTARIO
COUNTIES...

At 512 PM EST, severe thunderstorms were located along a line
extending from near Chimney Bluffs State Park to Rushville, moving
east at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Oswego, Geneva, Canandaigua, Fair Haven Beach State Park, Newark,
Lyons, Clifton Springs, Clyde, Phelps and Sodus.

 This includes Interstate 90 between exits 42 and 40.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4332 7704 4331 7697 4335 7681 4354 7648
      4311 7647 4310 7650 4303 7649 4301 7696
      4276 7698 4276 7731 4277 7731
TIME...MOT...LOC 2212Z 255DEG 53KT 4328 7699 4277 7722 

HAIL...<.75IN
WIND...60MPH
 
$$

Hitchcock
792 
WWUS51 KBUF 152233
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
533 PM EST Sun Nov 15 2020

NYC069-152242-
/O.CAN.KBUF.SV.W.0106.000000T0000Z-201115T2245Z/
Ontario NY-
533 PM EST Sun Nov 15 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ONTARIO COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 600 PM EST for
western New York.

LAT...LON 4315 7647 4314 7649 4311 7647 4310 7650
      4303 7649 4301 7695 4335 7681 4339 7673
      4354 7648
TIME...MOT...LOC 2232Z 270DEG 52KT 4332 7672 4281 7695 

$$

NYC011-075-117-152245-
/O.CON.KBUF.SV.W.0106.000000T0000Z-201115T2245Z/
Wayne NY-Cayuga NY-Oswego NY-
533 PM EST Sun Nov 15 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EST
FOR EASTERN WAYNE...CAYUGA AND SOUTHWESTERN OSWEGO COUNTIES...

At 532 PM EST, severe thunderstorms were located along a line
extending from near Fair Haven Beach State Park to near Geneva,
moving east at 60 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Oswego, Fair Haven Beach State Park, Clyde, Weedsport, Cato,
Sterling, Rose, Ira, Conquest and Savannah.

 This includes Interstate 90 near exit 40.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms have a history of 
producing widespread wind damage across Western New York. SEEK 
SHELTER NOW inside a sturdy structure and stay away from windows.
 
&&

LAT...LON 4315 7647 4314 7649 4311 7647 4310 7650
      4303 7649 4301 7695 4335 7681 4339 7673
      4354 7648
TIME...MOT...LOC 2232Z 270DEG 52KT 4332 7672 4281 7695 

HAIL...<.75IN
WIND...70MPH
 
$$

Hitchcock
872 
WWUS51 KBUF 152247
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
547 PM EST Sun Nov 15 2020

NYC011-075-117-152256-
/O.EXP.KBUF.SV.W.0106.000000T0000Z-201115T2245Z/
Wayne NY-Cayuga NY-Oswego NY-
547 PM EST Sun Nov 15 2020

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WAYNE...CAYUGA AND
SOUTHWESTERN OSWEGO COUNTIES HAS EXPIRED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire. Strong winds not 
related to thunderstorms will continue this evening.

LAT...LON 4315 7647 4314 7649 4311 7647 4310 7650
      4303 7649 4301 7695 4335 7681 4339 7673
      4354 7648
TIME...MOT...LOC 2246Z 259DEG 52KT 4335 7649 4284 7672 

$$

Hitchcock

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Buffalo, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 15, 4:02 PM EST, 49 minutes earlier.

Area forecast discussion, Nov 15, 4:02 PM EST, 49 minutes before
Area Forecast Discussion
National Weather Service Buffalo NY
402 PM EST Sun Nov 15 2020

.SYNOPSIS...
A deep storm system over eastern Canada will generate damaging winds
for parts of the region tonight along with widespread precipitation.
This could include a few inches of wet snow across the higher
elevations of the Southern Tier and also on the Tug Hill. The strong
storm system will slowly exit across Quebec on Monday and this will
allow winds to very gradually subside through Monday night.

&&

.NEAR TERM /THROUGH MONDAY/...
...DAMAGING WINDS EXPECTED TONIGHT...

A very deep yet progressive mid level trough will move across the
Great Lakes this evening, taking on a negative tilt with time. The
associated surface low will pass south of James Bay through tonight
while deepening to around 979MB. Its trailing cold front will enter
Western NY around 3 p.m. today, then move rapidly east across the
eastern Lake Ontario region around 7 p.m.

WINDS...

In the wake of a cold front late this afternoon/early evening, the
wind event will transition into a more traditional high wind event
with the strongest winds focusing northeast of Lake Erie and Lake
Ontario. Model guidance continues to support a tropopause fold and
stratospheric PV intrusion as the base of the trough crosses the
eastern Great Lakes, with the 1.5 PVU surface decending to around
550 MB. This, combined with strong cold advection and post-frontal
pressure rises will support a period of strong subsidence and steep
lapse rates through the low/mid levels. The magnitude of post-
frontal winds aloft suggest gusts of 65 mph northeast of Lake Erie
from Buffalo to Rochester. A few 70 mph gusts are possible close to
Lake Erie. The strongest gusts northeast of Lake Erie will be mid
afternoon through mid evening. Gusts across Jefferson County will
likely be closer to 60 mph this evening. Farther inland, expect
gusts of around 50 mph from the interior Southern Tier through the
Finger Lakes.

PRECIPITATION...

In the wake of the system, lake effect rain will develop northeast
of Lake Erie by early evening. This band of rain will initially be
over the Buffalo Northtowns, then drift slowly south to the
Southtowns later this evening before reaching the western Southern
Tier late tonight as boundary layer flow veers more westerly. The
rain will mix with snow overnight across the higher terrain, with
very minor accumulations possible on the hills. Lake effect rain and
wet snow showers will continue Monday across the western Southern
Tier and the Boston Hills and Wyoming County. Spotty 1-3 inch
accumulations are expected late tonight through Monday for the
highest terrain, with little or nothing at lower elevations.

East of Lake Ontario lake effect rain will setup this evening near
Watertown, then drift south to the northern Tug Hill by late
tonight. Lake effect showers of rain and snow will continue across
the Tug Hill region Monday, with snow favored at higher elevations
and rain at lower elevations. Expect several inches of accumulation
across the highest elevations of the Tug Hill, with little or no
accumulation at lower elevations.

CONVECTION...

Upstream radars show a well developed line of low topped showers and
a few thunderstorms along the cold front. Latest high resolution
CAMS guidance suggests a good chance this line will hold together as
it crosses our region early this evening. Instability is extremely
limited, but the strongly forced environment along the cold front
will support maintenance of the fine line of low topped convection.
Extremely strong winds aloft will support the risk of isolated
damaging wind gusts to near 70 mph if this line of storms maintains
itself.

&&

.SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY/...
A large scale trough will remain in place over the eastern third of
the U.S. and Canada during most of this period. This will allow for
continued active weather with cooler than normal temperatures.

Monday night, a weak lake response will remain in place through the
early portion of the evening, especially east of Lake Ontario where
temperatures will be a bit cooler. The lake response will strengthen
late Monday evening as a shortwave trough approaches the area from
the Upper Midwest late Monday into Tuesday morning. A cold front
will cross the area, and bring most of the lake bands fully inland
with its passage. Timing on the cold frontal passage looks generally
around daybreak on Tuesday morning, but there is some model
disagreement still with timing of the front. The best chance for
accumulating snow will be across the higher terrain of the North
Country, with some snow also accumulating over the higher terrain of
the Western Southern Tier. Lower elevations can expect mostly a rain
or rain/snow mix through the early morning on Tuesday. Snowfall
amounts over the Tug Hill on Monday night will be around 1 to 3
inches, and in the higher terrain of the Western Southern Tier
around 1 to 2 inches will be possible. Lows on Monday night will be
in the upper 20s to around 30 for the higher terrain, and in the low
to mid 30s for the lower elevations.

Tuesday, behind the passing cold front, winds will begin to shift to
the northwest. As mentioned above, the cold front should briefly
dislodge the lake bands away from the lakes and bring them inland,
bringing rain/snow showers to a more widespread area. Cold air
advection behind the cold front and a passing shortwave trough will
cause lake bands to redevelop southeast of the lakes during the day
on Tuesday. 850H temps of around -7C on Tuesday morning should cool
to around -11C by the late afternoon. Some drier air will be moving
into the region behind the cold front and shortwave trough, so that
will limit some of the lake response. Some guidance is suggesting an
upstream connection with the Georgian Bay and Lake Huron, with a
band over the western end of Lake Ontario and a band over Lake Erie.
Should this become the setup, then where these bands set up, there
will be some locally higher precipitation amounts. If a lake band
sets up from the Georgian Bay and across Lake Ontario, placement of
the band looks best from Niagara County southeast into Genesee
County and into Livingston County during the afternoon on Tuesday,
and slowly shifting eastward later in the afternoon. If a lake band
sets up over Lake Erie with a Lake Huron connection, it looks like
the best chance for precipitation would be Chautauqua County,
especially over the higher terrain of the Chautauqua Ridge.
Precipitation closer to the lakes will be a rain or rain/snow mix,
and change to snow farther inland over the higher terrain. Cold air
advection on Tuesday will also change precip to snow slowly through
the afternoon with lowering elevation. The higher terrain of the Tug
Hill is expected to get a quick half inch or so of snow in the
morning before the band drops south. Otherwise the higher terrain of
the Western Southern Tier should also see around an inch of snow.
Interior areas can expect a coating of snow as temperatures cool
through the afternoon. Guidance is spread on temperatures still for
Tuesday and any fluctuation in what temperatures are on Tuesday can
greatly alter snow potential and amounts. High temperatures on
Tuesday will be in the low to mid 30s for the higher terrain and in
the mid to upper 30s for the lower elevations.

Tuesday night, any remaining lake response will all be in the form
of snow as continued cold air advection brings temps down through
the night. 850H temps cool to around -12C for WNY and around -15C
for the North Country, with some model guidance even cooler than
this. These cooler temperatures with the larger scale trough over
the region still will help continue some of the lake response
Tuesday night. An area of high pressure over the mid-Mississippi
Valley will push east causing increased ridging over the area later
Tuesday night into Wednesday morning. This will start to cut down on
the lake response some over the area. Lows on Tuesday night will be
in the low to mid 20s for areas south of Lake Ontario where lake
clouds are in place, and in the mid teens for the North Country.

Wednesday, a weak lake response will remain in place southeast of
the lakes, tapering off through the morning. This will occur as
ridging continues to increase through the day, and warm air
advection increases 850H temps through the day as well. Temperatures
will be in the low to mid 30s south of Lake Ontario and in the low
20s to low 30s for areas east of Lake Ontario.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
High pressure will be across the eastern Great Lakes Wednesday night
and dry conditions will continue through Thursday. A chilly airmass
will be in place Wednesday night with highs in the upper 20s to mid
30s and lows in the teens to 20s. Cooler conditions possible across
the higher terrain across the western Southern Tier and Tug Hill.

A warm-up is expected Thursday and Friday with high temperatures
reaching the 50s across the region. Forecast consensus has high
pressure moving south and east of the region Friday maintaining dry
conditions into the weekend. A warm front will approach the region
Saturday and Sunday and chances for rain showers increase.

&&

.AVIATION /21Z SUNDAY THROUGH FRIDAY/...
Strong low pressure will then pass to our north and west this
evening. Expect a narrow band of heavy showers and possibly a few
thunderstorms along the associated cold front that will be capable
of producing convective wind gusts in excess of 50 knots along with
very brief IFR conditions.

Strong winds will continue behind the front, with gusts exceeding 50
knots this evening northeast of Lakes Erie and Ontario including
KBUF, KIAG, KROC, and KART. Winds will then slowly back off
overnight, but gusts will continue to exceed 35 knots at times right
through Monday afternoon.

There will be some lake effect rain showers northeast of the lakes
this evening. These will shift southward as the flow becomes more
WSW late tonight, and also will mix with snow across higher terrain.
Expect mainly VFR flight conditions tonight outside of lake effect
showers. Within lake effect bands there will be MVFR in most
locations, with IFR where precipitation changes to snow across
higher terrain. Lake effect rain and snow showers will continue
Monday east of the lakes, with MVFR and local IFR.

Outlook...

Tuesday...Lake effect rain and snow southeast of the lakes with
local MVFR/IFR.
Wednesday...Lingering lake effect snow showers to the southeast of
the Lakes with local MVFR/IFR, ending in the afternoon.
Thursday and Friday...VFR.

&&

.MARINE...
Storm warnings in effect for Lake Erie this evening. Gale warnings
are in effect for the remainder of the Lower Great Lakes through
much of tonight. A Gale Warning is also in effect for portions of
the St. Lawrence River.

The strongest winds will develop following the cold front. This
will produce storms to 50 knots behind the front on Lake Erie,
and high end gales to 45 knots this evening on Lake Ontario.
Lower end gales may continue into Monday before winds start to
gradually subside later Monday and Monday night.

&&

.TIDES/COASTAL FLOODING...
A Lakeshore Flood Warning is in effect for the east end of both
lakes. Model guidance has trended stronger with sustained winds
to 50 knots on Lake Erie and to 40 knots on Lake Ontario. Levels
on Lake Erie are expected to reach around 10 feet above low water
datum at Buffalo. This level requires the addition of Niagara
County into the warning for the Upper Niagara River, with flooding
possible along the shores of Grand Island and Cayuga Island.

Wave action will build on Lake Ontario following the passage of
this front, with lakeshore flooding and erosion this evening
through Monday afternoon at the east end of the lake.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...High Wind Warning until 1 AM EST Monday for NYZ001>003-007-008-
     010>012-019-085.
     Lakeshore Flood Warning until 1 AM EST Monday for NYZ001-010-
     019-085.
     Lakeshore Flood Warning until 4 PM EST Monday for NYZ006-007.
     Wind Advisory until 1 AM EST Monday for NYZ004>006.
     Wind Advisory until 11 PM EST this evening for NYZ013-014-020-
     021.
MARINE...Storm Warning until 9 PM EST this evening for LEZ040-041.
         Gale Warning until 10 PM EST this evening for LEZ020.
         Small Craft Advisory until 1 PM EST Monday for LOZ030.
         Gale Warning until 7 AM EST Monday for LOZ042-043-062.
         Gale Warning until 4 PM EST Monday for LOZ044-045-063>065.
         Small Craft Advisory until 1 PM EST Monday for SLZ024.
         Gale Warning until 1 AM EST Monday for SLZ022.

&&

SYNOPSIS...RSH
NEAR TERM...Hitchcock
SHORT TERM...SW
LONG TERM...HSK
AVIATION...Hitchcock
MARINE...Hitchcock
TIDES/COASTAL FLOODING...Apffel/Hitchcock
Hazardous weather outlook, Nov 15, 2:04 PM EST, 2 hours 47 minutes before
Hazardous Weather Outlook
National Weather Service Buffalo NY
204 PM EST Sun Nov 15 2020

NYZ008-161915-
Lewis-
204 PM EST Sun Nov 15 2020

...HIGH WIND WARNING IN EFFECT UNTIL 1 AM EST MONDAY...

This Hazardous Weather Outlook is for portions of central New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Wind Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ007-161915-
Jefferson-
204 PM EST Sun Nov 15 2020

...HIGH WIND WARNING IN EFFECT UNTIL 1 AM EST MONDAY...
...LAKESHORE FLOOD WARNING IN EFFECT FROM 6 PM THIS EVENING TO 4 PM
EST MONDAY...

This Hazardous Weather Outlook is for portions of central New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Wind Warning.
   Lakeshore Flood Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Lakeshore Flood Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ013-014-020-021-161915-
Livingston-Ontario-Cattaraugus-Allegany-
204 PM EST Sun Nov 15 2020

...WIND ADVISORY IN EFFECT UNTIL 11 PM EST THIS EVENING...
...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Wind Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ002-003-011-012-161915-
Orleans-Monroe-Genesee-Wyoming-
204 PM EST Sun Nov 15 2020

...HIGH WIND WARNING IN EFFECT UNTIL 1 AM EST MONDAY...
...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Wind Warning.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ001-010-019-085-161915-
Niagara-Northern Erie-Chautauqua-Southern Erie-
204 PM EST Sun Nov 15 2020

...HIGH WIND WARNING IN EFFECT UNTIL 1 AM EST MONDAY...
...LAKESHORE FLOOD WARNING IN EFFECT UNTIL 1 AM EST MONDAY...
...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Wind Warning.
   Lakeshore Flood Warning.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ004-161915-
Wayne-
204 PM EST Sun Nov 15 2020

...WIND ADVISORY IN EFFECT UNTIL 1 AM EST MONDAY...
...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Wind Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ006-161915-
Oswego-
204 PM EST Sun Nov 15 2020

...WIND ADVISORY IN EFFECT UNTIL 1 AM EST MONDAY...
...LAKESHORE FLOOD WARNING IN EFFECT FROM 6 PM THIS EVENING TO 4 PM
EST MONDAY...

This Hazardous Weather Outlook is for portions of central New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Wind Advisory.
   Lakeshore Flood Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Lakeshore Flood Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ005-161915-
Northern Cayuga-
204 PM EST Sun Nov 15 2020

...WIND ADVISORY IN EFFECT UNTIL 1 AM EST MONDAY...

This Hazardous Weather Outlook is for portions of central New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LOZ030-161915-
Lower Niagara River-
204 PM EST Sun Nov 15 2020

...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for portions of Lake Ontario.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

SLZ024-161915-
Saint Lawrence River from Ogdensburg to Saint Regis-
204 PM EST Sun Nov 15 2020

This Hazardous Weather Outlook is for portions of Saint Lawrence
River.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

SLZ022-161915-
Saint Lawrence River from Cape Vincent to Ogdensburg-
204 PM EST Sun Nov 15 2020

...GALE WARNING IN EFFECT UNTIL 1 AM EST MONDAY...

This Hazardous Weather Outlook is for portions of Saint Lawrence
River.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LOZ044-045-064-065-161915-
Lake Ontario nearshore waters from Sodus Bay to Mexico Bay-
Lake Ontario nearshore waters from Mexico Bay to the Saint Lawrence
River-Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence River-
204 PM EST Sun Nov 15 2020

...GALE WARNING IN EFFECT UNTIL 4 PM EST MONDAY...

This Hazardous Weather Outlook is for portions of Lake Ontario.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LOZ042-043-062-161915-
Lake Ontario nearshore waters from the Niagara River to Hamlin Beach-
Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
204 PM EST Sun Nov 15 2020

...GALE WARNING IN EFFECT UNTIL 7 AM EST MONDAY...
...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for portions of Lake Ontario.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LOZ063-161915-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
204 PM EST Sun Nov 15 2020

...GALE WARNING IN EFFECT UNTIL 4 PM EST MONDAY...
...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for portions of Lake Ontario.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LEZ040-041-161915-
Lake Erie nearshore waters from Ripley to Dunkirk-
Lake Erie nearshore waters from Dunkirk to Buffalo-
204 PM EST Sun Nov 15 2020

...GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...
...STORM WARNING IN EFFECT UNTIL 9 PM EST THIS EVENING...

This Hazardous Weather Outlook is for portions of Lake Erie.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.
   Severe Thunderstorm Watch.
   Storm Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LEZ020-161915-
Upper Niagara River and Buffalo Harbor-
204 PM EST Sun Nov 15 2020

...GALE WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...
...SEVERE THUNDERSTORM WATCH 510 IN EFFECT UNTIL 6 PM EST THIS
EVENING...

This Hazardous Weather Outlook is for portions of Lake Erie.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

Hitchcock

In the hours before

Local storm report, Nov 15, 3:51 PM EST, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
351 PM EST SUN NOV 15 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0328 PM     TSTM WND DMG     1 W JAMESTOWN           42.10N 79.26W
11/15/2020                   CHAUTAUQUA         NY   BROADCAST MEDIA

            LARGE TREE DOWN ACROSS STEWART AVE.

&&

HK
Local storm report, Nov 15, 4:14 PM EST, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
414 PM EST SUN NOV 15 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     TSTM WND GST     4 ESE RANDOLPH          42.14N 78.91W
11/15/2020  M65 MPH          CATTARAUGUS        NY   MESONET

0345 PM     TSTM WND GST     4 SSW EAST AURORA       42.71N 78.65W
11/15/2020  M58 MPH          ERIE               NY   MESONET

&&
Local storm report, Nov 15, 4:24 PM EST, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
424 PM EST SUN NOV 15 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0325 PM     TSTM WND DMG     2 NNE TONAWANDA         43.01N 78.87W
11/15/2020                   ERIE               NY   PUBLIC

            MULTIPLE TREES DOWN INCLUDING SOME ON POWER
            LINES.

&&

HK
Local storm report, Nov 15, 4:27 PM EST, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
427 PM EST SUN NOV 15 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0320 PM     TSTM WND DMG     HAMBURG                 42.72N 78.83W
11/15/2020                   ERIE               NY   TRAINED SPOTTER

            LARGE TREE LIMBED SNAPPED FROM TREE WITH
            SIMILAR DAMAGE AROUND THE TOWN OF HAMBURG.

&&
Local storm report, Nov 15, 4:32 PM EST, 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
432 PM EST SUN NOV 15 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0329 PM     TSTM WND DMG     1 NNE JAMESTOWN         42.11N 79.22W
11/15/2020                   CHAUTAUQUA         NY   TRAINED SPOTTER

            LARGE SPRUCE TREE DOWN.

&&

HK
Local storm report, Nov 15, 4:37 PM EST, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
437 PM EST SUN NOV 15 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0425 PM     TSTM WND DMG     CLARKSVILLE             42.09N 78.25W
11/15/2020                   ALLEGANY           NY   LAW ENFORCEMENT

            TREES AND LINES DOWN.

&&

HK

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 15, 3:09 AM ESTStorm WarningBUF20 hr
Nov 15, 2:10 PM ESTSpecial Marine WarningBUF84 min
Nov 15, 2:31 PM ESTSpecial Marine WarningBUF89 min
Nov 15, 2:39 PM ESTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua, Erie, Niagara51 min
Nov 15, 3:24 PM ESTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Chautauqua, Erie, Genesee, Monroe and 3 more66 min
Nov 15, 3:29 PM ESTSpecial Marine WarningBUF91 min
Nov 15, 3:57 PM ESTSevere Thunderstorm WarningBUFAllegany, Genesee, Livingston, Monroe, Ontario, Wayne and 1 more63 min
Nov 15, 4:34 PM ESTSpecial Marine WarningBUF86 min
Nov 15, 5:26 PM ESTSevere Thunderstorm WarningBUFJefferson, Lewis, Oswego64 min
Nov 15, 5:36 PM ESTSpecial Marine WarningBUF84 min
Nov 15, 6:04 PM ESTSevere Thunderstorm WarningBUFJefferson, Lewis56 min
Nov 15, 6:55 PM ESTSevere Thunderstorm WarningBUFLewis22 min

Nearby

Severe Thunderstorm Warnings in New York, 2020Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.