Alert archive / New York / High Wind Watches in 2019

High Wind Watch 5, NWS Buffalo, NY

November 25, 20197 counties in New York

NWS Buffalo, NY issued this high wind watch at Nov 25, 2019, 3:31 AM EST for 7 counties in New York. It took effect at Nov 27, 2019, 7:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Nov 25, 2019, 3:31 AM EST (08:31 UTC)
In effect from
Nov 27, 2019, 7:00 AM EST
Expired
Nov 26, 2019, 2:49 PM EST
In force
Issued by
NWS Buffalo, NY

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Niagara County, NY, Orleans County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 22 km from the middle of the area, began a volume at 08:34 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 8.5 hours before the alert went out and 19 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 00:00Z on 2019-11-25Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2019-11-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 182 square meters per square second.19395878Sfc1 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
748 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
182 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

250 
WWUS71 KBUF 250831
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
331 AM EST Mon Nov 25 2019

NYZ001-002-010>012-019-020-085-251645-
/O.NEW.KBUF.HW.A.0005.191127T1200Z-191128T0300Z/
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Chautauqua-
Cattaraugus-Southern Erie-
Including the cities of Niagara Falls, Medina, Buffalo, Batavia, 
Warsaw, Jamestown, Olean, Orchard Park, and Springville
331 AM EST Mon Nov 25 2019

...HIGH WIND WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph 
  possible.

* WHERE...Niagara, Orleans, Erie, Genesee, Wyoming, Chautauqua, 
  and Cattaraugus counties.

* WHEN...From Wednesday morning through Wednesday evening.

* IMPACTS...Damaging winds could blow down trees and power lines,
  and may lead to scattered power outages. Unsecured holiday
  decorations could also be damaged. Travel could be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Secure or shelter loose objects and holiday decorations 
in a safe location prior to the onset of the strong winds.

&&

$$

JJR/RSH
6 follow-up statements
456 
WWUS71 KBUF 251616
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
1116 AM EST Mon Nov 25 2019

NYZ001-002-010>012-019-020-085-260030-
/O.CON.KBUF.HW.A.0005.191127T1200Z-191128T0300Z/
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Chautauqua-
Cattaraugus-Southern Erie-
Including the cities of Niagara Falls, Medina, Buffalo, Batavia, 
Warsaw, Jamestown, Olean, Orchard Park, and Springville
1116 AM EST Mon Nov 25 2019

...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING...

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph 
  possible.

* WHERE...Niagara, Orleans, Erie, Genesee, Wyoming, Chautauqua, 
  and Cattaraugus counties.

* WHEN...From Wednesday morning through Wednesday evening.

* IMPACTS...Damaging winds could blow down trees and power 
  lines, and may lead to scattered power outages. Unsecured 
  holiday decorations could also be damaged. Travel could be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Secure or shelter loose objects and holiday
decorations in a safe location prior to the onset of the strong
winds.

&&

$$
203 
WWUS71 KBUF 251923
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
223 PM EST Mon Nov 25 2019

NYZ001-002-010>012-019-020-085-260330-
/O.CON.KBUF.HW.A.0005.191127T1200Z-191128T0300Z/
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Chautauqua-
Cattaraugus-Southern Erie-
Including the cities of Niagara Falls, Medina, Buffalo, Batavia, 
Warsaw, Jamestown, Olean, Orchard Park, and Springville
223 PM EST Mon Nov 25 2019

...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING...

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph 
  possible.

* WHERE...Niagara, Orleans, Erie, Genesee, Wyoming, Chautauqua, 
  and Cattaraugus counties.

* WHEN...From Wednesday morning through Wednesday evening.

* IMPACTS...Damaging winds could blow down trees and power 
  lines, and may lead to scattered power outages. Unsecured 
  holiday decorations could also be damaged. Travel could be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Secure or shelter loose objects and holiday
decorations in a safe location prior to the onset of the strong
winds.

&&

$$
653 
WWUS71 KBUF 260232
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
932 PM EST Mon Nov 25 2019

NYZ001-002-010>012-019-020-085-261100-
/O.CON.KBUF.HW.A.0005.191127T1200Z-191128T0300Z/
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Chautauqua-
Cattaraugus-Southern Erie-
Including the cities of Niagara Falls, Medina, Buffalo, Batavia, 
Warsaw, Jamestown, Olean, Orchard Park, and Springville
932 PM EST Mon Nov 25 2019

...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING...

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph 
  possible.

* WHERE...Niagara, Orleans, Erie, Genesee, Wyoming, Chautauqua, 
  and Cattaraugus counties.

* WHEN...From Wednesday morning through Wednesday evening.

* IMPACTS...Damaging winds could blow down trees and power 
  lines, and may lead to scattered power outages. Unsecured 
  holiday decorations could also be damaged. Travel could be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Secure or shelter loose objects and holiday
decorations in a safe location prior to the onset of the strong
winds.

&&

$$

Apffel
728 
WWUS71 KBUF 260912
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
412 AM EST Tue Nov 26 2019

NYZ001-002-010>012-019-020-085-261715-
/O.CON.KBUF.HW.A.0005.191127T1200Z-191128T0300Z/
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Chautauqua-
Cattaraugus-Southern Erie-
Including the cities of Niagara Falls, Medina, Buffalo, Batavia, 
Warsaw, Jamestown, Olean, Orchard Park, and Springville
412 AM EST Tue Nov 26 2019

...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING...

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph 
  possible.

* WHERE...Niagara, Orleans, Erie, Genesee, Wyoming, Chautauqua, 
  and Cattaraugus counties.

* WHEN...From Wednesday morning through Wednesday evening.

* IMPACTS...Damaging winds could blow down trees and power 
  lines, and may lead to scattered power outages. Unsecured 
  holiday decorations could also be damaged. Travel could be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Secure or shelter loose objects and holiday
decorations in a safe location prior to the onset of the strong
winds.

&&

$$
085 
WWUS71 KBUF 261438
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
938 AM EST Tue Nov 26 2019

NYZ001-002-010>012-019-020-085-262245-
/O.CON.KBUF.HW.A.0005.191127T1200Z-191128T0300Z/
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Chautauqua-
Cattaraugus-Southern Erie-
Including the cities of Niagara Falls, Medina, Buffalo, Batavia, 
Warsaw, Jamestown, Olean, Orchard Park, and Springville
938 AM EST Tue Nov 26 2019

...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING...

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph 
  possible.

* WHERE...Niagara, Orleans, Erie, Genesee, Wyoming, Chautauqua, 
  and Cattaraugus counties.

* WHEN...From Wednesday morning through Wednesday evening.

* IMPACTS...Damaging winds could blow down trees and power 
  lines, and may lead to scattered power outages. Unsecured 
  holiday decorations could also be damaged. Travel could be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Secure or shelter loose objects and holiday
decorations in a safe location prior to the onset of the strong
winds.

&&

$$

Apffel
669 
WWUS71 KBUF 261949
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
249 PM EST Tue Nov 26 2019

NYZ019-085-270400-
/O.UPG.KBUF.HW.A.0005.191127T1200Z-191128T0300Z/
/O.NEW.KBUF.HW.W.0005.191127T1200Z-191128T0600Z/
Chautauqua-Southern Erie-
Including the cities of Jamestown, Orchard Park, and Springville
249 PM EST Tue Nov 26 2019

...HIGH WIND WARNING IN EFFECT FROM 7 AM WEDNESDAY TO 1 AM EST
THURSDAY...

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph 
  expected.

* WHERE...Chautauqua and Southern Erie counties.

* WHEN...From 7 AM Wednesday to 1 AM EST Thursday.

* IMPACTS...Damaging winds will blow down trees and power lines,
  and lead to scattered power outages. Unsecured holiday 
  decorations could also be damaged. Travel could be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive. Secure or shelter loose objects and holiday
decorations in a safe location prior to the onset of the strong
winds.

&&

$$

NYZ001-002-010>012-020-270400-
/O.UPG.KBUF.HW.A.0005.191127T1200Z-191128T0300Z/
/O.NEW.KBUF.HW.W.0005.191127T1500Z-191128T0600Z/
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Cattaraugus-
Including the cities of Niagara Falls, Medina, Buffalo, Batavia, 
Warsaw, and Olean
249 PM EST Tue Nov 26 2019

...HIGH WIND WARNING IN EFFECT FROM 10 AM WEDNESDAY TO 1 AM EST
THURSDAY...

* WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph 
  expected.

* WHERE...Niagara, Orleans, Northern Erie, Genesee, Wyoming, and 
  Cattaraugus counties.

* WHEN...From 10 AM Wednesday to 1 AM EST Thursday.

* IMPACTS...Damaging winds will blow down trees and power lines,
  and lead to scattered power outages. Unsecured holiday 
  decorations could also be damaged. Travel could be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive. Secure or shelter loose objects and holiday
decorations in a safe location prior to the onset of the strong
winds.

&&

$$

NYZ003>008-013-014-021-270400-
/O.NEW.KBUF.WI.Y.0019.191127T1800Z-191128T0600Z/
Monroe-Wayne-Northern Cayuga-Oswego-Jefferson-Lewis-Livingston-
Ontario-Allegany-
Including the cities of Rochester, Newark, Fair Haven, Oswego, 
Watertown, Lowville, Geneseo, Canandaigua, and Wellsville
249 PM EST Tue Nov 26 2019

...WIND ADVISORY IN EFFECT FROM 1 PM WEDNESDAY TO 1 AM EST
THURSDAY...

* WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph 
  expected.

* WHERE...Monroe, Wayne, Northern Cayuga, Oswego, Jefferson, 
  Lewis, Livingston, Ontario, and Allegany counties.

* WHEN...From 1 PM Wednesday to 1 AM EST Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.
  Unsecured holiday decorations could also be damaged.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

What forecasters said that day

The local office's own words before this high wind watch 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 high wind watch went out at Nov 25, 3:26 AM EST, 5 minutes earlier.

Area forecast discussion, Nov 25, 3:26 AM EST, 5 minutes before
Area Forecast Discussion
National Weather Service Buffalo NY
326 AM EST Mon Nov 25 2019

.SYNOPSIS...
Mainly dry and quiet weather will prevail through Tuesday...along
with a general day-to-day warming trend that will help push
temperatures back up to above normal levels. A significant storm
system will then pass by to our north on Wednesday...bringing
widespread rain showers followed by a round of potentially strong
to damaging winds. In the wake of this system...cooler weather
will return for the rest of the week.

&&

.NEAR TERM /THROUGH TUESDAY/...
During the course of today a northern stream mid-level trough
will work across the far northern Plains...with an attendant broad
surface wave tracking from the Minnesota-Manitoba border to about
Lake Superior. As it does so...this feature will push the far
eastern end of its attendant warm front northeastward and across
our region. Given upstream radar trends currently showing some
spotty light returns draped along the boundary from Lower Michigan
to central Lake Erie...cannot rule out a few sprinkles or very
light showers passing across our northwestern periphery as the
front crosses our region...though for the most part today will
be dry with the bulk of the synoptic forcing from this system
remaining well to our northwest. Otherwise...continued steady
warm air advection will help to push high temperatures into the
lower to mid 40s east of Lake Ontario and the upper 40s to lower
50s in most other locations...with the warmest temperatures found
across portions of the Genesee Valley and Finger Lakes Regions.

The warm front will then finish its northward push across our area
this evening...with any leftover sprinkles across the North Country
and Saint Lawrence Valley coming to an end. Following its passage...
a deep southwesterly flow of milder air will prevail across our
region through Tuesday...in between low pressure passing across
central Ontario/Quebec and high pressure anchored off the Atlantic
coastline. This will ensure dry weather along with notably above
average temperatures...with lows tonight ranging from the mid 30s
across Lewis county to the upper 30s and lower 40s elsewhere...
and highs on Tuesday mainly between the upper 40s and mid 50s...
with the warmest readings again found across the Genesee Valley
and Finger Lakes Regions.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/...
...Strong to damaging winds likely on Wednesday...

Tuesday night will be the relative 'calm before the storm' for much
of the forecast area...as amplifying mid level ridge will cross our
region ahead of a large cyclone. The latter will be driven by a
robust shortwave that is currently crashing the shores of the
Pacific Northwest. An anomalously strong 160-175kt H25 jet
associated with this energy will emerge out of the base of a
pronounced mid level trough over the nations mid section during the
course of Tuesday night...and this will encourage the trough to
become negatively tilted...thereby producing a strongly divergent
upper level flow across our forecast area. It will also support
continued strengthening of the now mature cyclone...with a 990mb sfc
low in the vcnty of Kansas deepening to nearly 985mb by the time it
reaches southern Wisconsin at daybreak.

Further downstream over our forecast area...a far reaching warm
front will extend eastward from the aforementioned storm system and
lift slowly to the north across the Lower Great Lakes. While forcing
from this frontal boundary still looks to be rather weak over our
area...a strongly divergent flow aloft and minimal convergence in
the low levels should be able to generate some rain showers
overnight...mainly west of the Finger Lakes. Have once again shaved
back on pops and particularly on the timing of the showers. This
shower activity will likely blossom towards daybreak Wednesday
though...as the added lift from a coupled H25 jet will encroach over
the region. Boiling this all down...while the bulk of the night will
be rainfree...there will be an increasing chance for showers (mainly
far west) during the overnight. It will also be on the mild
side...as a strengthening southerly flow and steady warm advection
should prevent the mercury from dropping into the 30s for the
western counties while temperatures will remain above freezing for
the Eastern Lake Ontario region. In fact...our mins will likely
occur near midnight before temperatures flat-line or rise a bit (west
of Finger Lakes) overnight.

Guidance remains in lock step agreement that the deep storm system
will then become vertically stacked during the day Wednesday...that
is to say...that the mature system will occlude and actually fill
during the course of the afternoon. This process is most
dramatically depicted by the ECMWF which suggests a 10mb filling
(986 to 996mb) during the course of the afternoon. This would also
occur during the time that the associated cold front would plow
across the region. While the ECMWF with its more course resolution
is only indicating a low level jet of 40-50 kts with the fropa...
the operational GFS continues to hammer the idea of a 60-70kt LLJ.
This raises the concern that the strongest winds and most prone time
for damage would be with the actual fropa when convective processes
could help to transport the anomalously strong LLJ to the sfc. The
timing of this fropa also remains consistent from run to run and
model to model...with the passage forecast to occur between  1 and
4 PM over the western counties and between 4 and 7 PM for sites east
of Lake Ontario. The strongest LLJ will be just to the south of the
eastward forecast track though...so that would target areas south of
Lake Ontario...and in particular the far western counties.

In the wake of the cold front...a 50-60kt LLJ will be found in the
deepening cold air. This environment would more likely support high
advisory type sfc winds...but could not rule out a gust to 60 mph or
localized damage from already damaged trees or those in poor health.
The west to east storm track will also minimize the added affects of
isallobaric pressure rises...as increases of just 4-5mb in the
initial six hours is expected behind the front. From this vantage
point...guidance is suggesting the potential for damaging wind gusts
with the frontal passage with high end advisory winds thereafter. As
mentioned in previous discussions...this could be covered with a
wind advisory and short fused severe thunderstorm warnings (thunder/
lightning not needed)...but will take the watch of a high wind watch
to get the message out on the street and take additional action as
the event plays out. The high wind watch will be for the far western
counties (see watch/warning/advisory section below) and will run
from 12z Wed to 3z Wednesday evening.

Besides the winds on Wednesday...the very dynamic synoptic system
will generate widespread showers. While the bulk of the showers will
come in conjunction with the low level forcing from the cold front...
a coupled H25 jet and 150-200m hgt falls will be more than enough to
support showers at any point during the day. Its worth noting that
the showers could be moderately heavy with the front. This could be
a little problematic for those traveling for the Thanksgiving
holiday...but at least it will not be snow. Just plan for a little
unsettled weather and give yourself some extra time because of the
strong winds and rain. Temps will peak during the first half of the
day then gradually drop off in the wake of the front in the
afternoon and particularly in the evening. Max temps will range form
the low to mid 50s in most areas...however if we can fully mix the
environment ahead of the front...then areas without much shower
activity could easily reach the 60s. This warmth will not last very
long though.

Cold air will deepen in the wake of the cold front Wednesday
night...but it will take several hours for temperatures at cloud
level to chill to the point of supporting a change over to wet snow
showers. It will also likely remain too 'warm' aloft to allow for a
true lake response...so lift needed for the mixed pcpn will come
from subtle shortwaves in the cyclonic flow and from local
orographic processes. While winds should SLOWLY drop off through the
night...it will remain windy with evening gusts still expected to
reach 40 to 50 mph in some areas.

As the strong synoptic storm system exits across the Canadian
maritimes on Thursday...a deep cyclonic flow of chilly air will be
left across our forecast area. This in part will aid in keeping some
gusty winds around...but its interesting that much of the driving
force behind gusts to 35 mph or better will be supported by
isallobaric pressure rises of 5-7 mb/3 hr...which is nearly twice
the values from the previous days high wind event. Otherwise...H85
temps of -10c will encourage some lake induced rain and wet snow
showers to fall over the region...mainly for sites southeast of the
lakes. Temperatures on Thursday will be nearly 20 degrees lower than
those from Wednesday.

High pressure nosing south from James Bay and warm advection in the
mid levels will then quickly cut off the lake driven pcpn early
Thursday night. This will leave a problem free Thanksgiving night
across the region with mins generally in the 20s.

&&

.LONG TERM /FRIDAY THROUGH SUNDAY/...
Temperatures will remain below normal for the first half of this
period...then an unlocking of a temporarily blocked mid level flow
will prompt a pattern change that will lead to milder but unsettled
weather.

As we open this period Friday and Friday night...a broad mid level
ridge will be centered over the Upper Great Lakes and Ohio valley
while strong Canadian high pressure will nose across our region from
James Bay. This will guarantee fair dry weather...although it will
be on the chilly side of normal with temps averaging 5 to as much as
10 degrees below normal.

The mid level ridge will then slowly east across the Lower Great
Lakes Saturday afternoon and night...while another stacked low will
be churning over the northern plains. This will gradually open the
door for GOMEX moisture to work across the Lower Great Lakes where
a strengthening warm front will help to generate some mixed rain and
snow. POPs from continuity have been raised for these two periods to
account for a faster transition to unsettled weather.

For Sunday...the very large vertically stacked low will lumber
across the Upper Mid West while the aforementioned warm front will
push across our forecast area. This will support at least the
likelihood more mixed rain and wet snow...so pops have been boosted
regionwide. This system will probably also impact holiday travel...
as those traveling home late Sunday and Sunday night will have to
contend with the mixed pcpn. This will also have the potential to
include lower cigs...which could also impact air travel. Those to
travel during this time should monitor forecasts accordingly.

&&

.AVIATION /09Z MONDAY THROUGH FRIDAY/...
Through sunrise fairly widespread low level moisture will maintain
MVFR to lower-end VFR ceilings across much of the region. Some IFR
ceilings will also be likely at times across the Southern Tier...
with an outside but nonzero chance of some brief IFR conditions
elsewhere.

During the course of today...a warm front will slowly push across
the region from southwest to northeast. While the passage of the
boundary may be marked by a few sprinkles or very light showers
closer to Lakes Erie and Ontario...these will have no impact on
aviation operations. More importantly to aviation interests...the
passage of the warm front will be followed by drier low level air
working into our region from the southwest...which will result in
a general southwest-northeast improvement back to VFR conditions
between today and early this evening.

Once established...the VFR conditions should then last through the
majority of tonight...before another swath of low level moisture
and possible MVFR ceilings arrives across far western and northern
New York late.

Outlook...
Tuesday...VFR/MVFR.
Tuesday night and Wednesday...Widespread MVFR in rain showers
developing along with a risk of LLWS...followed by potentially
strong surface winds on Wednesday.
Thursday...Mainly VFR...with areas of MVFR in lake effect
clouds and scattered snow showers possible southeast of the lakes.
Friday...VFR.

&&

.MARINE...
A lingering brisk west to west-southwesterly flow will gradually
diminish through this morning...with winds and waves at the east
ends of Lakes Erie and Ontario falling to below advisory levels
by late morning.

Tonight into Tuesday south-southwesterly winds will increase a bit
again on Lake Erie...but this increase does not appear to be enough
to warrant an additional advisory...especially given that such a
flow will keep the better wave action confined to the open waters
of the lake...and away from our nearshore zones.

A significant storm system will then track across the central
Great Lakes and southern Ontario Tuesday night and Wednesday.
This will bring widespread advisory-level conditions to the
entire Lower Lakes Region...as well as the likelihood of west-
southwesterly gales to Lake Erie.

Following the passage of a trailing secondary trough on Thursday...
winds will shift to the northwest and gradually diminish through
Friday as high pressure builds into our region.

&&

.TIDES/COASTAL FLOODING...
A lakeshore flood event is possible Wednesday into early Wednesday
night for Lake Erie. A deep storm system will pass by to the north
of the Lower Great Lakes during this period...and this will result
in several hours of very strong west to southwest winds.

Southerly winds will increase to 15 to 25 knots across the lake
Wednesday morning...then after the passage of a strong cold front
during the midday hours...winds will increase to 35 knot gales while
becoming west to southwest into the evening hours.

During periods of normal lake levels these winds would probably not
be strong enough to produce a warning criteria seiche on the
lake...however all of the Great lakes are at abnormally high levels.
The higher starting point could allow the lake to exceed 8 feet late
Wednesday afternoon.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...High Wind Watch from Wednesday morning through Wednesday
     evening for NYZ001-002-010>012-019-020-085.
     Lakeshore Flood Watch from Wednesday morning through Wednesday
     evening for NYZ010-019-085.
MARINE...Small Craft Advisory until 10 AM EST this morning for LEZ040-
         041.
         Small Craft Advisory until 10 AM EST this morning for
         LOZ044-045.

&&

SYNOPSIS...JJR
NEAR TERM...JJR
SHORT TERM...RSH
LONG TERM...RSH
AVIATION...JJR
MARINE...JJR
TIDES/COASTAL FLOODING...RSH
Hazardous weather outlook, Nov 24, 2:45 PM EST, 12 hours 46 minutes before
Hazardous Weather Outlook
National Weather Service Buffalo NY
245 PM EST Sun Nov 24 2019

NYZ001>003-010>012-019-085-251945-
Niagara-Orleans-Monroe-Northern Erie-Genesee-Wyoming-Chautauqua-
Southern Erie-
245 PM EST Sun Nov 24 2019

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

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

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

A potentially significant storm system is forecast to track across
Southern Ontario on Wednesday. This will result in a round of strong
to potentially damaging winds Wednesday afternoon and evening when
wind gusts could reach 60 mph.

.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>008-013-014-020-021-251945-
Wayne-Northern Cayuga-Oswego-Jefferson-Lewis-Livingston-Ontario-
Cattaraugus-Allegany-
245 PM EST Sun Nov 24 2019

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

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

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

A potentially significant storm system is forecast to track across
Southern Ontario on Wednesday. This will result in a round of strong
winds Wednesday afternoon and evening when wind gusts could exceed
45 mph.

.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

LEZ020-040-041-251945-
Upper Niagara River and Buffalo Harbor-
Lake Erie nearshore waters from Ripley to Dunkirk-
Lake Erie nearshore waters from Dunkirk to Buffalo-
245 PM EST Sun Nov 24 2019

This Hazardous Weather Outlook is for the New York waters of Lake
Erie.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

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

A potentially significant storm system is forecast to track across
Southern Ontario on Wednesday. This could lead to gale force winds
Wednesday into Wednesday evening.

.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

LOZ030-042>045-062>065-SLZ022-024-251945-
Lower Niagara River-
Lake Ontario nearshore waters from the Niagara River to Hamlin Beach-
Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay-
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 the Niagara River to Hamlin Beach-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence River-
Saint Lawrence River from Cape Vincent to Ogdensburg-
Saint Lawrence River from Ogdensburg to Saint Regis-
245 PM EST Sun Nov 24 2019

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

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

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

The probability for widespread hazardous weather is low.

.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

JLA

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 25, 3:34 AM ESTLakeshore Flood WatchBUFChautauqua, Erie35 hr
Nov 25, 2:22 PM ESTGale WatchBUF13 hr
Nov 25, 2:49 PM ESTLakeshore Flood WatchBUFJefferson, Oswego37 hr

Nearby

High Wind Watches in New York, 2019Every high wind watch in 2019

Sources

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