New York, 2019

Flash Flooding and Blizzard in New York, February 24 to 25, 2019

February 24 to 25, 2019 · NWS BUF · 26 events in 18 counties and zones

Low pressure over the central Plains rapidly deepened as it moved into the central Great Lakes, ending up as a 970 mb low over western Quebec. A strong cold front trailing the low sliced through western New York trailing it and ushering in very gusty winds.

Where it happened

Every event with a place to put it; 24 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
2
Property damage
$663,000
Crop damage
None recorded
Events
26

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS BUF wrote it up.

Low pressure over the central Plains rapidly deepened as it moved into the central Great Lakes, ending up as a 970 mb low over western Quebec. A strong cold front trailing the low sliced through western New York trailing it and ushering in very gusty winds. The track of the strong surface low was a classic high wind track for our region. Strong cold advection and subsidence behind the cold front allowed post-frontal winds to mix down to the surface, and the 1.5 PVU surface descending down to at least 500 mb, indicative of steepening lapse rates. The wind aloft was extremely strong with 70-80 knots just off the deck. In addition, ice pushes off of the frozen Lake Erie lead to substantial pushing inland of ice on the Lake Erie shore as well as ice intrusion over the Buffalo ice boom. This resulted in ice jams on the Niagara River and flash flooding in Grand Island as a result. As colder air moved in behind it, lake effect snow developed east of the lakes with the best fetch for intense snow bands combined with wind resulting in blizzard conditions east of Lake Ontario. Selected peak wind gusts included 80 mph at Oswego, 74 mph at Niagara Falls International Airport, 69 mph at Buffalo-Niagara International Airport, 69 mph in Batavia, 74 mph in Dunkirk, 66 mph at Rochester, 60 mph at Fort Drum, and 59 mph in Orchard Park. Damage was reported in every county in the forecast area from the wind. Snow totals in the lake effect wind storm induced blizzard included 10 inches in Redfield, 7.4 inches in Fulton, and 7 inches in Constableville.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Feb 24, 6:53 AM EST, 2 hours 7 minutes earlier.

Area forecast discussion, Feb 24, 6:53 AM EST, 2 hours 7 minutes before
Area Forecast Discussion
National Weather Service Buffalo NY
653 AM EST Sun Feb 24 2019

.SYNOPSIS...
A very strong storm system will track across the Lower Lakes today,
producing powerful wind gusts across the region this afternoon
through Monday morning, while also sending temperatures falling some
20 to 30 degrees through the afternoon and evening hours today. Cold
air flowing across the Lakes will bring bands of lake effect
snow tonight, that when combined with the still strong winds
will create significant blowing snow east of the Lakes, with
blizzard conditions likely east of Lake Ontario. Surface high
pressure will build towards the region Tuesday relieving the
area of the strong winds and snowfall.

&&

.NEAR TERM /THROUGH TONIGHT/...
This morning a surface low is near the northern shoreline of
Lake Michigan, and is deepening by a upper level low to its west
as seen on water vapor imagery. A strong surface high pressure
is sliding down the eastern Rockies this morning and this
feature will in part help to produce a very tight pressure
gradient over the region this period.

This surface low will track across the SOO region this morning,
while pushing a cold front across our region from west to east
around noontime and through the afternoon hours. The passage of
this frontal boundary (with a line of convective showers) will
commence the very strong winds that will ramp up through the
afternoon hours.

Winds...

This deep low coupled with strong cold air advection (850 mb
temperatures dropping 12 to 16 degrees Celsius through the day),
forcing from a passing isallobaric couplet and passing 1.5 PV tail
(down to 500 mb) across the region will transport very strong winds
down to the surface, beginning around noontime and continuing
through Sunday night. As the 1.5 PV tail crosses the region Sunday
afternoon behind a strong cold front, and 60 knots of wind flow
between 1K and 2K feet, wind gusts at the surface will approach 75
mph downwind of Lake Erie and across the Lake Plain. This 2-3 hour
period just behind the cold front is when we could see these 75 mph
wind gusts.

Behind the cold front this evening winds will continue from the
southwest-west direction with continued gusts 60 mph and greater.
What will also make this wind event concerning will be the prolonged
period of damaging winds, with gusts over 60 mph possible for about
a 12 hour period. This lengthy period of winds battering the region
could increase the severity of this wind event. Strong winds will
persist into Sunday night, this will be more of a west to west-
northwest direction as the surface low tracks across southern
Quebec.

The surface low is expected to deepen to around 971 mb just past
midnight across southern Canada. Though the low will begin to fill,
we will maintain winds 60 mph or greater across the region as the
surface pressure gradient remains tight and cold air advection
continues to increase the mixing layer deeper into the LLJ aloft. As
winds veer to west-northwesterly late tonight there may be a subtle
uptick in the wind gusts along the southern Lake Ontario shoreline
and through the Genesee Valley.

Temperatures...

Temperatures will continue to rise through the morning hours with a
warm air advection regime over the Eastern Great Lakes. Temperatures
are already noticeably warmer in the downslope areas near Lake Erie,
and most areas this morning will warm into the 50s, and possibly
around 60F in the Genesee Valley by late morning. These temperatures
will not be near record values (record maximum temperatures were set
for this date just two years ago, with several stations recording
all-time February highs in the 70s). As the cold front crosses the
region between noontime and 6 pm temperatures will begin to sharply
fall.

Temperatures tonight will drop into the upper teens to mid 20s, with
temperatures 12Z Monday morning some 20 to 30F degrees cooler than
where they were 24 hours prior.

Snow...

The 850 mb temperatures will plummet to -15C over the Lakes which
will increase the instability and generate lake effect snow.  As
lake effect snow parameters become increasingly favorable, bands of
snow will form to the east and then southeast of the Lakes.

On Lake Erie...A few snow flakes are possible late this afternoon,
but it will not be until the early evening that the lake effect snow
begins to take root east of Lake Erie. There will likely be slivers
of open water, in addition to latent heat flux through thin or
broken ice waters. This in addition to upstream moisture for Lake
Huron will bring lake effect snow, and upslope snows to the Niagara
Frontier and the So. Tier.

The greatest snow accumulations tonight will be across the Boston
Hills and Ski Country. Here 2 to 4 inches of snow will fall...though
measuring this snow will be quite difficult as strong winds will
create blowing and drifting. These winds, combined with cellular
bursts of snow will create white-out conditions at times. Confidence
on where open waters on Lake Erie may form by the strong winds, and
if this snow will be enough to persist periods of whiteout
conditions to do anything but maintain the winter weather advisory
as is.

On Lake Ontario...A blizzard warning will continue for the region,
starting this evening and going through Monday afternoon. Lake
induced equilibrium levels are expected to increase to around 8-9K
feet which will be plenty tall enough for lake effect snow to form.
On a westerly flow wind convergence from both the north and south
shoreline of Lake Ontario will create enough lift for either
clusters of snow, or a band of lake snow.

This snowband, or fractured bands of snow within the strong wind
field, are expected to first impact Jefferson and Lewis Counties
this evening, with a slow veering to the winds bringing the
concentration of snow down across the upslope Tug Hill region, and
eventually deeper into Oswego County late tonight. The band of snow
is expected to yield several inches of snow, upwards to 6-8 on the
Tug Hill tonight. This deeper snow cover combined with the still
strong winds will create blowing snow that is expected to greatly
reduce visibilities over a several hour period.

The worst conditions will focus on the Tug Hill region, including
southern Jefferson, northern Oswego, and western Lewis counties.

&&

.SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/...
Intense low pressure will be moving northeast into the Gulf of St
Lawrence on Monday. There still will be a tight pressure gradient
which support strong winds across the region during the day.
Although warning gusts (greater than 60 mph) will become less common
during the day, winds will continue to gust 45 to 55 mph into Monday
afternoon. As the low pulls away, winds will diminish from west to
east. Strong winds (aided by enhanced instability due to the lake)
will last the longest near the southeastern shores of Lake Ontario,
from Wayne to southern Jefferson counties. Winds will drop
considerably Monday evening, but it is likely that wind warnings
will need to be followed by a wind advisory during the day Monday.

The well mixed and saturated airmass, together with steep lapse
rates supporting lake effect snow will result in continued blizzard
conditions east and southeast of Lake Ontario. Expect winds to
continue to gust up to 65 mph in the morning together with blowing
snow. This will make any travel north of Syracuse to south of
Watertown extremely hazardous (ex I-81). Snow amounts, what can be
measured, will be on the order of 3-5", but impacts will mostly be
from near zero visibility and drifting rather than from
accumulations. The steadiest snows will focus across Oswego and the
southern half of Lewis County. Moisture will diminish once the upper
level trough axis moves east into New England Monday afternoon with
snowfall rates diminishing some by late Monday afternoon. Blizzard
conditions should no longer be an issue by this time and with winds
not quite as strong late Monday afternoon. However, there will be
some moisture enhancement from Lake Huron Monday night, which should
maintain some lake snows southeast of Lake Ontario throughout the
night. Additional accumulation should be modest, averaging 1-3" from
eastern Wayne County to southern Oswego County.

Further west, there will be less moisture and a lower cap with the
trough axis already to the east by Monday morning. This will result
in notably less snowfall east of Lake Erie. This said, it is
difficult to predict the ice coverage on Lake Erie at this point,
and there will likely be some moisture contribution from the lake,
enough to support snow showers well into Monday night. This is
likely underdone by model guidance which may be too aggressive in
ice coverage. Even so, additional accumulation Monday should average
in the 1-3" range. Blowing snow may be an issue in upslope regions
south of the Buffalo Metro area. In the Buffalo metro area, the
Monday morning commute may be more hindered by road closures from
downed trees and wires from earlier high winds.

Temperatures will be in the upper teens and lower 20s for most of
the day Monday, then fall into the teens and single digits Monday
night. Wind chills, or the apparent temperature, will be near zero
most of the day Monday, and 0 to 10 below Monday night. This will be
a factor for those who loose power, or those working to restore it.

High pressure will build into the central Great Lakes on Tuesday,
and eventually the eastern Great Lakes late Tuesday night. Drier air
will build into the region, with lingering lake effect snow
gradually diminishing Tuesday and finally tapering off on Tuesday
night when winds become light. Temperatures will still be about 15F
below normal, with highs in the upper teens to lower 20s, but at
least winds will be no longer an issue. The surface high will
provide good radiational cooling conditions late Tuesday night with
lows 5 to 15 above south of Lake Ontario, and below zero readings
common across the North Country.

&&

.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
While there will not be much weather to deal with for the bulk of
this period...we will likely experience the effects of another
'cutter' storm for the weekend. Otherwise...we can anticipate a
general day to day warming trend with the mercury ending up above
normal by the time we deal with another possible wind event. Its a
little unusual that there is less run to run and model to model
consistency for the start of this period than the ending...so that
being said...confidence will generally increase with the forecast as
we head into the weekend. The day to day details...

High pressure will extend east to our area from the northern plains
on Wednesday. While this is the most consistent solution...there are
packages that depict a weak inverted trough splitting the feature.
This would result in a little snow across our region later Wednesday
and Wednesday night...but given the inconsistency with this solution
and the fact that it is somewhat of an outlier...will back off on
pops and only use slight chc 20s. Again...this is a low confidence
solution for Wednesday afternoon and night...so be sure to check
back for a more concrete forecast.

For Thursday...there is much better agreement that a surface based
ridge over the Upper Mississippi Valley will build east across the
Lower Great lakes. This will promote fair dry weather with little
wind and temps that will peak between 25 and 30.

The area of high pressure will push off the coast of New England
Thursday night and Friday. While this should maintain fair weather
over our region...it will gradually set up a return flow of
moisture that will precede the next storm system.

A disturbance in the southern stream of the split flow will move out
of the southern Rockies late Friday with cyclogenesis over the
southern plains and Lower Mississippi Valley Friday night. While
guidance is not suggesting a strong 'cutter' storm like the one that
will seriously impact our region in the near term...it does depict a
deepening sub 1000mb system that will pass by to our west. This
should lead to some mixed precipitation along with some gusty winds
late Friday night and Saturday.

&&

.AVIATION /12Z SUNDAY THROUGH THURSDAY/...
For the 12Z TAFS a few areas of showers are passing across the
region within a warm air advection region. A strengthening LLJ
may bring some LLWS to TAF sites through the morning before a
strong cold front crosses the region late morning and through
the afternoon. Behind this cold front expect a period of very
strong wind gusts...exceeding 60 knots across KBUF/KIAG/KROC and
later KART.

Colder air building across the region will transition the rain to
lake effect snow by early evening. Snow, combined with the still
strong winds will create blowing snow that will bring a period of
LIFR or lower visibilities. Snow and blowing snow will initially be
near KBUF/KART but as winds veer to west and eventually west-
northwest Sunday night these intensifying lake effect snows and
areas of blowing snow will be south of KBUF/KART...and be in the
vicinity of KJHW.

Winds will continue to be strong Sunday night with gusts across the
Lake Plain possibly nearing 60 knots occasionally. Longest duration
of high winds will likely be at KROC, where late Sunday night a west
to northwest direction off Lake Ontario will maintain strong wind
gusts.

Outlook...

Monday...VFR/MVFR in scattered snow showers. Local IFR in heavier
lake effect snow and blowing snow east of Lake Ontario.
Tuesday...VFR with local IFR in scattered lake effect snow showers.
Wednesday...A chance of IFR in snow.
Thursday...VFR, with local IFR in scattered lake effect snow showers.

&&

.MARINE...
A deepening area of low pressure will track across the SOO region
this morning and into southern Canada. This low, combined with
strong cold air advection...strong LLJ aloft and a tight pressure
gradient will yield storm force winds on the Lakes, and gales across
the Niagara River. Winds could gust to 65 knots on the Lakes this
afternoon just behind a cold front passage. These storm force winds
are expected to continue through the night, and linger through the
morning hours of Monday. These winds will generate significant wave
heights of 25 feet on Lake Ontario, with an occasional wave over 30
feet. Storm Warning are in effect for both Lakes Erie and Ontario.

A heavy freezing spray warning will be hoisted for Lake Ontario
for tonight through Monday night. The combination of strong
winds, high waves and temperatures falling below freezing will
result in heavy freezing spray on vessels.

It will not be until Tuesday night when a surface high pressure
nears the region that winds and waves will diminish back to fair
boating weather.

&&

.HYDROLOGY...
Several brief periods of rain will continue today as our region
falls within the warm sector of a strong storm system. Rainfall
amounts look to be relatively minor with about a tenth to
perhaps a quarter of an inch expected. Temperatures will rise
this morning with Thawing Degree Hours reaching a threshold
where ice begins to move. Ice thickness is only around 2-3
inches on the Buffalo creeks. Ice of this thickness typically
breaks up rather quickly, resulting in ice flows and minor jams.
Typically, this is not enough ice to cause major ice jams, but
there is some risk that there are larger chunks along the shores
or locked in place. The most susceptible areas to ice jams are
the Buffalo Creeks and Cattaraugus Creek, although they can
happen anywhere.

&&

.TIDES/COASTAL FLOODING...
Powerful winds gusting up to 75 mph will result in significant
water rises in the eastern basins of Lake Erie and Lake Ontario
today and tonight.

Along the Lake Erie shore...lakeshore flooding is expected, and
this is likely to be a high end event. Guidance suggests the
water level at Buffalo may exceed 11 feet above low water datum.
The wildcard is how much the lake ice will restrict the seiche.
During a modest wind event a few days ago, satellite imagery
showed the ice on Lake Erie moving, suggesting it is not fast
ice and the wind will be able to move the water and ice
significantly.

As a result, this may impact some locations which are not
typically impacted. For reference, warning criteria is 8 ft. If
the water level at Buffalo exceeds 10 feet above low water
datum, flooding may occur at Fuhrmann Boulevard, Canalside and
in the Old First Ward section of Buffalo.

In addition, rises will break up ice in place on the lake, and
this will get pushed onto shoreline areas likely causing
damage to the immediate lakeshore, including the Buffalo Harbor
and Buffalo waterfront. Ice chunks may damage structures, and
even get pushed into rivers and creeks flowing into Lake Erie. Ice
will also get pushed across the Niagara River Ice Boom into the
Upper Niagara River likely causing damage along shoreline areas
of the Upper Niagara River.

The highest water levels will be this afternoon and early evening.

Along Lake Ontario...Significant water rises and high waves are
expected to impact shoreline areas from Oswego county to the
Saint Lawrence River. Ice in place, especially at the northeast
end extending to the Saint Lawrence River will get pushed onto
shoreline areas likely causing damage. Areas which may be
particularly vulnerable to flooding and ice damage are Sandy
Pond, Black River Bay, Chaumont Bay, and the Thousand Islands
Region of the Saint Lawrence River. Ice blocks will get pushed
onshore, and possibly into rivers and creeks flowing into Lake
Ontario. While Lake Ontario does not respond as dramatically to
a lake seiche, guidance suggests a 1-2 foot rise across the
eastern end of the Lake. This combined with waves which may
reach 25 feet is likely to have a major impact on the immediate
lakeshore.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...High Wind Warning until 10 AM EST Monday for NYZ001>003-010-
     011-019-085.
     Lakeshore Flood Warning until 4 AM EST Monday for NYZ001-010-
     019-085.
     Winter Weather Advisory from 3 PM this afternoon to 1 PM EST
     Monday for NYZ012-019-020-085.
     High Wind Warning from 10 AM this morning to 10 AM EST Monday
     for NYZ004>008-012>014-020-021.
     Lakeshore Flood Warning from 4 PM this afternoon to 1 PM EST
     Monday for NYZ006-007.
     Blizzard Warning from 6 PM this evening to 4 PM EST Monday for
     NYZ006>008.
     Winter Weather Advisory from 3 PM this afternoon to 4 AM EST
     Monday for NYZ010-011.
MARINE...Gale Warning from 10 AM this morning to 4 AM EST Monday for
         LEZ020.
         Storm Warning from 10 AM this morning to 4 AM EST Monday
         for LEZ040-041.
         Gale Warning from 10 AM this morning to 4 AM EST
         Monday for LOZ030.
         Heavy Freezing Spray Warning from 1 AM Monday to 4 AM EST
         Tuesday for LOZ042>045-062>065.
         Storm Warning from 10 AM this morning to 10 AM EST Monday
         for LOZ042>044-062>064.
         Storm Warning from 1 PM this afternoon to 10 AM EST Monday
         for LOZ045-065.

&&

SYNOPSIS...Thomas
NEAR TERM...Thomas
SHORT TERM...Apffel
LONG TERM...RSH
AVIATION...Thomas
MARINE...Thomas
HYDROLOGY...TMA/Apffel/JJR/Thomas
TIDES/COASTAL FLOODING...TMA/Apffel/Hitchcock/Thomas
Hazardous weather outlook, Feb 24, 6:44 AM EST, 2 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service Buffalo NY
644 AM EST Sun Feb 24 2019

NYZ008-251145-
Lewis-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 AM EST
MONDAY...
...BLIZZARD 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...Today 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.
   Blizzard 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.

   High Wind Warning.
   Blizzard 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

NYZ006-007-251145-
Oswego-Jefferson-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 AM EST
MONDAY...
...LAKESHORE FLOOD WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
1 PM EST MONDAY...
...BLIZZARD 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...Today 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.
   Blizzard 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.

   High Wind Warning.
   Lakeshore Flood Warning.
   Blizzard 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

NYZ004-005-013-014-021-251145-
Wayne-Northern Cayuga-Livingston-Ontario-Allegany-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 AM EST
MONDAY...

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

.DAY ONE...Today 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.

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

   High Wind 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

NYZ002-003-251145-
Orleans-Monroe-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT UNTIL 10 AM EST MONDAY...

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

.DAY ONE...Today 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.

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

   High Wind 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

NYZ001-251145-
Niagara-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT UNTIL 10 AM EST MONDAY...
...LAKESHORE FLOOD WARNING IN EFFECT UNTIL 4 AM EST MONDAY...

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

.DAY ONE...Today 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.

   High Wind 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

NYZ019-085-251145-
Chautauqua-Southern Erie-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT UNTIL 10 AM EST MONDAY...
...LAKESHORE FLOOD WARNING IN EFFECT UNTIL 4 AM EST MONDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
1 PM EST MONDAY...

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

.DAY ONE...Today 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.
   Winter Weather Advisory.

.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.

   High Wind Warning.
   Winter Weather Advisory.

.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

NYZ011-251145-
Genesee-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT UNTIL 10 AM EST MONDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
4 AM EST MONDAY...

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

.DAY ONE...Today 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.
   Winter Weather Advisory.

.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.

   High Wind 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

NYZ010-251145-
Northern Erie-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT UNTIL 10 AM EST MONDAY...
...LAKESHORE FLOOD WARNING IN EFFECT UNTIL 4 AM EST MONDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
4 AM EST MONDAY...

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

.DAY ONE...Today 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.
   Winter Weather Advisory.

.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.

   High Wind 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

NYZ012-020-251145-
Wyoming-Cattaraugus-
644 AM EST Sun Feb 24 2019

...HIGH WIND WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 AM EST
MONDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
1 PM EST MONDAY...

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

.DAY ONE...Today 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.
   Winter Weather Advisory.

.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.

   High Wind Warning.
   Winter Weather Advisory.

.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-LOZ030-251145-
Upper Niagara River and Buffalo Harbor-Lower Niagara River-
644 AM EST Sun Feb 24 2019

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 4 AM EST
MONDAY...

This Hazardous Weather Outlook is for portions of Lake Erie and Lake
Ontario.

.DAY ONE...Today 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

LOZ042>044-062>064-251145-
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 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-
644 AM EST Sun Feb 24 2019

...STORM WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 AM EST
MONDAY...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 AM MONDAY TO 4 AM
EST TUESDAY...

This Hazardous Weather Outlook is for portions of Lake Ontario.

.DAY ONE...Today and tonight.

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

   Storm Warning.
   Heavy Freezing Spray 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.

   Storm Warning.
   Heavy Freezing Spray 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

LOZ045-065-251145-
Lake Ontario nearshore waters from Mexico Bay to the Saint Lawrence
River-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence River-
644 AM EST Sun Feb 24 2019

...STORM WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 AM EST
MONDAY...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 AM MONDAY TO 4 AM
EST TUESDAY...

This Hazardous Weather Outlook is for portions of Lake Ontario.

.DAY ONE...Today and tonight.

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

   Storm Warning.
   Heavy Freezing Spray 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.

   Storm Warning.
   Heavy Freezing Spray 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

LEZ040-041-251145-
Lake Erie nearshore waters from Ripley to Dunkirk-
Lake Erie nearshore waters from Dunkirk to Buffalo-
644 AM EST Sun Feb 24 2019

...STORM WARNING IN EFFECT FROM 10 AM THIS MORNING TO 4 AM EST
MONDAY...

This Hazardous Weather Outlook is for portions of Lake Erie.

.DAY ONE...Today and tonight.

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

   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

SLZ022-024-251145-
Saint Lawrence River from Cape Vincent to Ogdensburg-
Saint Lawrence River from Ogdensburg to Saint Regis-
644 AM EST Sun Feb 24 2019

This Hazardous Weather Outlook is for the New York waters of the
Saint Lawrence River.

.DAY ONE...Today 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

In the hours before

Special weather statement, Feb 24, 8:10 AM EST, 50 minutes before
Special Weather Statement
National Weather Service Buffalo NY
810 AM EST SUN FEB 24 2019

NYZ001-002-010>012-019-020-085-241415-
Chautauqua-Cattaraugus-Southern
Erie-Wyoming-Orleans-Genesee-Niagara-Northern Erie-
810 AM EST SUN FEB 24 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WESTERN WYOMING...
CATTARAUGUS...ERIE...NIAGARA...ORLEANS...CHAUTAUQUA AND WESTERN
GENESEE COUNTIES...

At 809 AM EST, radar indicated strong thunderstorms were located
along a line extending from 15 miles west of Fort Niagara State Park
to near Lake Erie State Park. Movement was east at 55 mph.

Wind gusts up to 50 mph are possible with these storms along with
brief heavy downpours.

Locations impacted include...
Buffalo, Cheektowaga, Niagara Falls, West Seneca, North Tonawanda,
Jamestown, Clarence, Lockport, Lackawanna, Batavia, Kenmore, Depew,
Amherst, Tonawanda, Dunkirk, Fredonia, Lancaster, Hamburg, East
Aurora and Medina.

This includes the following highways...
 Interstate 90 between exits 59 and 48.
 Interstate 86 between exits 7 and 24.

LAT...LON 4200 7960 4243 7952 4253 7939 4259 7919
      4272 7909 4280 7892 4292 7890 4299 7902
      4306 7900 4308 7908 4315 7904 4330 7909
      4340 7864 4341 7811 4299 7816 4200 7850
TIME...MOT...LOC 1309Z 251DEG 47KT 4324 7937 4235 7943

Hitchcock

The radar

The Buffalo radar (KBUF), 21 km away, was scanning. The volume nearest the first event began at 23:06 UTC.

Open the radar archive at this moment

Event by event

17 high wind, 4 lakeshore flood, 3 blizzard, 2 flash flood. Local standard time, as filed.

Lakeshore Flood, Northern Erie

When
February 24, 9:00 AM EST to February 25, 12:00 AM EST
Where
Northern Erie forecast zone
Property damage
$50,000
Reported by
Emergency Manager
Coordinates
42.758, -78.780 (the zone’s center; the record gives no point)

Ice pushed onshore from Lake Erie, which resulted in damage to lake shore roads and shoulders.

Lakeshore Flood, Southern Erie

When
February 24, 9:00 AM EST to February 25, 12:00 AM EST
Where
Southern Erie forecast zone
Property damage
$50,000
Reported by
Emergency Manager
Coordinates
42.758, -78.780 (the zone’s center; the record gives no point)

Ice pushed onshore from Lake Erie, which resulted in damage to lake shore roads and shoulders.

Lakeshore Flood, Chautauqua

When
February 24, 9:00 AM EST to February 25, 12:00 AM EST
Where
Chautauqua forecast zone
Property damage
$10,000
Reported by
Emergency Manager
Coordinates
42.303, -79.406 (the zone’s center; the record gives no point)

Ice pushed onshore from Lake Erie, which resulted in damage to lake shore roads and shoulders.

Lakeshore Flood, Niagara

When
February 24, 9:00 AM EST to February 25, 12:00 AM EST
Where
Niagara forecast zone
Property damage
$60,000
Reported by
Utility Company
Coordinates
43.173, -78.691 (the zone’s center; the record gives no point)

Ice pushed into the Niagara River over the Buffalo ice boom, which resulted in ice jam flooding along the shoreline from Grand Island northward.

High Wind, Chautauqua

When
February 24, 11:45 AM EST to February 25, 9:00 AM EST
Where
Chautauqua forecast zone
Measured
64 kt (74 mph) measured gust
Property damage
$50,000
Reported by
WLON
Coordinates
42.303, -79.406 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Southern Erie

When
February 24, 12:10 PM EST to February 25, 9:00 AM EST
Where
Southern Erie forecast zone
Measured
50 kt (58 mph) estimated gust
Property damage
$40,000
Reported by
Trained Spotter
Coordinates
42.758, -78.780 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Genesee

When
February 24, 1:00 PM EST to February 25, 9:00 AM EST
Where
Genesee forecast zone
Measured
64 kt (74 mph) measured gust
Property damage
$20,000
Reported by
Mesonet
Coordinates
43.001, -78.194 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Niagara

When
February 24, 1:50 PM EST to February 25, 9:00 AM EST
Where
Niagara forecast zone
Measured
64 kt (74 mph) measured gust
Property damage
$100,000
Reported by
ASOS
Coordinates
43.173, -78.691 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Northern Erie

When
February 24, 1:50 PM EST to February 25, 9:00 AM EST
Where
Northern Erie forecast zone
Measured
64 kt (74 mph) measured gust
Injuries
2 direct, 0 indirect
Property damage
$75,000
Reported by
ASOS
Coordinates
42.758, -78.780 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power. Two people were injured by falling utility poles, as well.

High Wind, Monroe

When
February 24, 2:40 PM EST to February 25, 9:00 AM EST
Where
Monroe forecast zone
Measured
57 kt (66 mph) measured gust
Property damage
$50,000
Reported by
ASOS
Coordinates
43.165, -77.636 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Orleans

When
February 24, 3:30 PM EST to February 25, 9:00 AM EST
Where
Orleans forecast zone
Measured
61 kt (70 mph) measured gust
Property damage
$10,000
Reported by
Mesonet
Coordinates
43.251, -78.189 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Wyoming

When
February 24, 3:45 PM EST to February 25, 10:00 AM EST
Where
Wyoming forecast zone
Measured
58 kt (67 mph) measured gust
Property damage
$20,000
Reported by
Mesonet
Coordinates
42.702, -78.224 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Jefferson

When
February 24, 3:52 PM EST to February 25, 9:00 AM EST
Where
Jefferson forecast zone
Measured
56 kt (64 mph) measured gust
Property damage
$20,000
Reported by
Trained Spotter
Coordinates
43.999, -76.052 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

Flash Flood, Niagara

When
February 24, 6:06 PM EST to February 25, 5:00 AM EST
Where
Niagara County, 1.09 mi WNW of North Tonawanda to 0.49 mi S of La Salle
Cause
Ice Jam
Property damage
$20,000
Reported by
Utility Company
Coordinates
43.036, -78.900

Flash Flood, Erie

When
February 24, 6:06 PM EST to February 25, 12:00 AM EST
Where
Erie County, 0.94 mi WNW of Tonawanda to 0.51 mi W of Tonawanda
Cause
Ice Jam
Property damage
$5,000
Reported by
Utility Company
Coordinates
43.024, -78.888

High Wind, Cattaraugus

When
February 24, 6:27 PM EST to February 25, 6:00 AM EST
Where
Cattaraugus forecast zone
Measured
54 kt (62 mph) measured gust
Property damage
$10,000
Reported by
Mesonet
Coordinates
42.249, -78.679 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Allegany

When
February 24, 7:00 PM EST to February 25, 6:00 AM EST
Where
Allegany forecast zone
Measured
50 kt (58 mph) estimated gust
Property damage
$1,000
Reported by
Law Enforcement
Coordinates
42.257, -78.028 (the zone’s center; the record gives no point)

Several reports were received of trees and wires down throughout the county.

Blizzard, Oswego

When
February 25, 12:00 AM EST to 2:00 PM EST
Where
Oswego forecast zone
Reported by
Trained Spotter
Coordinates
43.464, -76.209 (the zone’s center; the record gives no point)

Blizzard, Jefferson

When
February 25, 12:00 AM EST to 2:00 PM EST
Where
Jefferson forecast zone
Reported by
Trained Spotter
Coordinates
43.999, -76.052 (the zone’s center; the record gives no point)

Blizzard, Lewis

When
February 25, 12:00 AM EST to 2:00 PM EST
Where
Lewis forecast zone
Reported by
Trained Spotter
Coordinates
43.785, -75.449 (the zone’s center; the record gives no point)

High Wind, Wayne

When
February 25, 1:00 AM EST to 9:00 AM EST
Where
Wayne forecast zone
Measured
50 kt (58 mph) estimated gust
Property damage
$10,000
Reported by
Trained Spotter
Coordinates
43.066, -76.978 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Northern Cayuga

When
February 25, 2:00 AM EST to 9:00 AM EST
Where
Northern Cayuga forecast zone
Measured
50 kt (58 mph) estimated gust
Property damage
$10,000
Reported by
Trained Spotter
Coordinates
43.010, -76.574 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Ontario

When
February 25, 2:00 AM EST to 12:35 PM EST
Where
Ontario forecast zone
Measured
50 kt (58 mph) measured gust
Property damage
$10,000
Reported by
Mesonet
Coordinates
42.853, -77.300 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Livingston

When
February 25, 3:00 AM EST to 10:00 AM EST
Where
Livingston forecast zone
Measured
50 kt (58 mph) estimated gust
Property damage
$2,000
Reported by
Law Enforcement
Coordinates
42.728, -77.775 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Lewis

When
February 25, 4:40 AM EST to 10:00 AM EST
Where
Lewis forecast zone
Measured
59 kt (68 mph) measured gust
Property damage
$20,000
Reported by
Mesonet
Coordinates
43.785, -75.449 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

High Wind, Oswego

When
February 25, 7:00 AM EST to 10:00 AM EST
Where
Oswego forecast zone
Measured
70 kt (81 mph) measured gust
Property damage
$20,000
Reported by
WLON
Coordinates
43.464, -76.209 (the zone’s center; the record gives no point)

Many reports were received of trees and wires down throughout the county causing substantial structural damage to homes and businesses. Thousands were reported without power.

What these are

Lakeshore Flood
Flooding along the shore of one of the Great Lakes or another large lake.
High Wind
Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Blizzard
Sustained winds or frequent gusts of 35 mph or more with falling or blowing snow that cuts visibility below a quarter mile for three hours or longer.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in New York in 2019Every state in 2019This day in weather historyWarnings in New York, February 2019

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 809106, 809107, 809108, 809109, 809121, 809122, 809120, 809115, 809119, 809118, 809117, 809129, 809123, 809111, 809112, 809132, 809133, 809136, 809137, 809138, 809124, 809126, 809131, 809130, 809128, 809127.