Alert archive / New York / Special Weather Statements in 2016

Special Weather Statement, NWS Buffalo, NY

December 9, 2016Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Dec 9, 2016, 4:58 PM EST for Chautauqua County, New York. It was in force for 92 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Dec 9, 2016, 4:58 PM EST (21:58 UTC)
Expired
Dec 9, 2016, 6:30 PM EST
In force
92 min
Issued by
NWS Buffalo, NY

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 106 km from the middle of the area, began a volume at 21:59 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 12:00Z, 10.0 hours before the alert went out and 106 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 2016-12-09Temperature 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 12:00Z on 2016-12-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
987 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

820 
WWUS81 KBUF 092158
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
458 PM EST FRI DEC 9 2016

NYZ019-020-092330-
Cattaraugus-Chautauqua-
458 PM EST FRI DEC 9 2016

...A BAND OF LAKE EFFECT SNOW WILL AFFECT SOUTHWESTERN CATTARAUGUS
AND SOUTHERN CHAUTAUQUA COUNTIES...

At 457 PM EST, A band of lake effect snow producing snow fall rates
of up to 2 inches per hour will continue through early evening from
near Ripley to Chautauqua Lake and Frewsburg. This band will remain
nearly stationary, with just a slight drift to the northeast over
the next hour or two.

Locations impacted include...
Jamestown, Lakewood, Falconer, Mayville, Chautauqua Institute,
Jamestown West, Long Point State Park, Frewsburg and Chautauqua.

This includes the following highways...
 Interstate 90 near exit 61.
 Interstate 86 between exits 6 and 13.

Use extra caution if you must travel into or through this dangerous
snow squall. Rapid changes in visibility and potentially slick roads
are likely to lead to accidents. Consider delaying travel until the
squall passes your location.

LAT...LON 4233 7972 4200 7869 4200 7932 4217 7976
      4227 7976 4228 7973 4231 7977
$$

Hitchcock

What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Dec 9, 3:33 PM EST, 1 hour 25 minutes earlier.

Area forecast discussion, Dec 9, 3:33 PM EST, 1 hour 25 minutes before
Area Forecast Discussion
National Weather Service Buffalo NY
333 PM EST Fri Dec 9 2016

.SYNOPSIS...
Cold air will continue to flow across the Great Lakes region with
areas of lake effect snow to the south and east of Lakes Erie and
Ontario. These lake snow bands are expected to intensify overnight,
the move to the north as low pressure approaches from the west. This
area of low pressure will then move through the Great Lakes region
Sunday and Monday, producing a general snow, possibly mixed with a
little rain or sleet for much of the region.

&&

.NEAR TERM /THROUGH SATURDAY/...
Will continue the Lake Snow Warnings and Advisory through the night
as lake effect snow remains off Lakes Erie and Ontario.

One of the main factors in the persistence and strength of the lake
snow is the connection to lake effect snow plumes from Great Lakes
waters farther upwind of the eastern lakes. We have one plume from
the southern end of Lake Huron crossing the northern tip of Lake
Erie, and inland  to the hills of Chautauqua and Cattaraugus
counties. This nearly continuous area of lake snow is at times
formed as multiple bands or as a single plume, occasionally broken,
but still delivering snow at a rate of a half inch to an inch an
hour. The steady accumulation of snow adds up over time and many
locations within the lake snow bands have received another foot of
snow, or more, just today with more snow expected through the night
and Saturday.

The conditions to the south of Lake Ontario have become more
disrupted as the connection to Georgian Bay broke off earlier today,
but will reform late today and through the night. The area of lake
snow is expected to cross a larger fetch on the lake and come
onshore at Monroe County. Light converging winds and a westerly
shore component will direct the lake band along the shore to the
east and bring the heavier snow to eastern Monroe County, across
Wayne and Northern Cayuga to Southern Oswego County. The intensity
and steady state of the snow plume could drop up to another foot of
snow over central Wayne and Northern Cayuga counties.

Westerly winds across the bulk of Western and Central New York will
keep the flow of snow moving eastward from the lakes. Winds across
the Lake Ontario basin and Northern New York will be light and
variable, producing a zone of convergence along the south shore of
the lake, further enhancing the lake snow band. Winds are expected
to shift to a more southwesterly direction on Saturday night.

Temperatures will drop to the teens and low 20s overnight, with
single number east of Lake Ontario, in areas of clearing skies and
fresh snow. Highs on Saturday will rise to the mid 20s to lower 30s.

&&

.SHORT TERM /SATURDAY NIGHT THROUGH MONDAY NIGHT/...
Lingering lake effect snow will continue east of the lakes Saturday
night, and will slowly lift northward toward Buffalo and Watertown
by Sunday morning while weakening and decreasing in inland extent.
While a few more inches of snow accumulation are expect across the
western Southern Tier and Tug Hill region, the weakening snow bands
may only result in an inch or two of snow across the Buffalo and
Water town areas Sunday morning.

Our attention then turns to the widespread snowfall event that is
setting up for Sunday night, which may bring some slow downs to
morning commutes across the region Monday morning. This weather
system evolves out of the low pressure system currently coming on
shore in the Pacific Northwest. The shortwave trough, and
accompanying surface low reflection, will track along the baroclinic
zone across the Great Lakes Sunday night and Monday. Ahead of the
wave and surface low, widespread snowfall will develop in the warm
air advection and along the band of frontogensis, with the region
also in a favorable jet-quadrant for enhanced lift. Model consensus
is in good agreement, supporting 100 PoPs Sunday night.

Model guidance is improving with the track of this system, with more
guidance now pointing to keeping the above freezing air aloft south
of the forecast area, across PA. This means there is a decreasing
chance of a wintry mix of precipitation Sunday night into Monday,
with most of the precipitation falling as all snow Sunday night. With
the track of the surface low still just north and west of the
forecast area, we will see warmer surface temperatures pushing into
the mid 30s during the day Monday. Precipitation will also end from
west to east Monday morning through mid-day as mid and upper level
dry air moves in across the area, which will result in snow ending
and changing over to a light drizzle on Monday. The the increasing
likelihood of all snow Sunday night, snowfall amounts will likely
end up warranting an advisory, with most locations picking up 4 to 6
inches.

&&

.LONG TERM /TUESDAY THROUGH FRIDAY/...
The active and very wintry pattern will continue through the long
term, and even intensify by late next week. Looking at the longwave
pattern, a sharp upper level ridge will build over Alaska early next
week and allow for a period of cross polar flow, with Siberian air
making the trip across the Arctic and into northern Canada. The
Alaskan ridge will remain in place through much of the week and
force a deep longwave trough to develop over central and eastern
North America. A large piece of true arctic air will move south
through the Canadian Prairies and reach the Great Lakes and New
England later next week. This may set the stage for another round of
significant lake effect snow for Thursday and Friday. As the cold
air comes in, another baroclinic wave may bring some widespread
general snow Wednesday.

Looking at the details, on Tuesday and Tuesday night a weak trough
will pass through the Great Lakes and may produce a few light snow
showers of little consequence. There may also be some limited lake
effect snow east of the lakes, but marginal instability will keep
this light.

On Wednesday the longwave trough will begin to dig into the Northern
Plains and Upper Great Lakes. Ahead of the trough, medium range
model guidance develops a baroclinic wave over the Ohio Valley and
Northeast. The GFS and most of it's ensemble members along with the
Canadian GEM are more aggressive with this, and would produce a
general light to moderate snowfall across the entire area. The 12Z
ECMWF is much weaker with this feature. The ECMWF has shown a good
deal of inconsistency with this system, as previous runs looked more
similar to the current 12Z GFS. With this in mind, went closer to
GFS based guidance with snow likely for Wednesday.

In the wake of this system cold air will flood into the Great Lakes
Thursday and Friday. This will be the coldest air of the season,
with 850mb temps plummeting to -20C or colder. This will translate
into highs in the teens and lows in the single numbers away from the
immediate lakeshores. The deep cold air crossing the lakes and the
overall pattern is suggestive of more significant lake effect snow
downwind of the lakes for Thursday and Friday, however there are
significant differences in wind direction, not to be unexpected
given this is still 6-7 days out.

&&

.AVIATION /21Z FRIDAY THROUGH WEDNESDAY/...
Cold air remains across the region with areas of lake effect snow to
the east and south of Lakes Erie and Ontario. Through 18Z on
Saturday, the lake snow bands will be persistent across the Western
Southern Tier and the snows will redevelop and intensify across the
south shore of Lake Ontario.

TAF sites most affected by the snow will be KJHW and KROC. KJHW
will remain in the lake snow band's influence with MVFR visibilities
degrading to IFR/IFR after 12Z Saturday. KROC starts VFR until the
lake snow connection to Georgian Bay links up with Lake Ontario and
MVFR conditions at 05Z lower to near IFR conditions at 12Z Saturday.
Weather conditions to the east of Rochester will be much worse as
the lake snow moves onshore across Wayne and Cayuga counties. The
remaining TAF sites should stay out of the heavier snow with VFR
ceilings and light snow although there may be periods after 18z
Saturday when conditions degrade as the winds become more
southwesterly and push the snow to the north ahead of an approaching
low pressure system, due to cross the region later in the weekend
and early workweek.

Outlook...

Saturday...IFR in lake effect snow southeast of the lakes.
Occasional snow showers with more brief IFR elsewhere.
Sunday and Monday...MVFR/IFR in widespread light snow.
Tuesday...MVFR with a chance of snow showers.
Wednesday...MVFR/IFR in snow.

&&

.MARINE...
Small craft advisories will remain in place across the Eastern Great
Lakes tonight. Winds will diminish as low pressure across Eastern
Canada pushes farther eastward over the Atlantic waters. Although
winds will fall below small craft advisory levels along the Lake
Ontario shore, and advisories will be dropped there, winds will
again increase Saturday, and will likely continue SCA on Lake Erie
through the night of Saturday.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...Lake Effect Snow Warning until 6 AM EST Saturday for
     NYZ003>006.
     Lake Effect Snow Advisory until 6 AM EST Saturday for NYZ002.
     Lake Effect Snow Warning until 6 PM EST Saturday for NYZ019-
     020.
MARINE...Small Craft Advisory until 7 AM EST Sunday for LEZ040-041.
         Small Craft Advisory until 4 AM EST Saturday for
         LOZ043>045.
         Small Craft Advisory until 10 PM EST this evening for
         LOZ042.

&&

SYNOPSIS...WCH
NEAR TERM...WCH
SHORT TERM...CHURCH
LONG TERM...HITCHCOCK
AVIATION...WCH
MARINE...WCH
Hazardous weather outlook, Dec 9, 10:16 AM EST, 6 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BUFFALO NY
1016 AM EST FRI DEC 9 2016

NYZ001-007-008-010>014-021-085-101530-
NIAGARA-JEFFERSON-LEWIS-NORTHERN ERIE-GENESEE-WYOMING-LIVINGSTON-
ONTARIO-ALLEGANY-SOUTHERN ERIE-
1016 AM EST FRI DEC 9 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND NORTH
CENTRAL NEW YORK.

.DAY ONE...TODAY AND TONIGHT.

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE WILL BE A PERIOD OF WIDESPREAD SNOW OR MIXED PRECIPITATION
SUNDAY MORNING THROUGH MONDAY MORNING. SNOWFALL AMOUNTS WILL
LIKELY REMAIN BELOW WARNING CRITERIA...BUT THIS SYSTEM MAY DROP
SEVERAL INCHES OF SNOW WHICH WOULD HINDER TRAVEL DURING THAT TIME
PERIOD.

THE COLDEST AIR YET THIS WINTER IS ON TRACK TO ARRIVE BY MID TO
LATE NEXT WEEK AND PERSIST INTO THE WEEKEND. THIS COLD AIR WILL BE
ACCOMPANIED BY ANOTHER ROUND OF SIGNIFICANT LAKE EFFECT SNOW EAST
OF LAKES ERIE AND ONTARIO. CONFIDENCE IS VERY HIGH IN SIGNIFICANT
LAKE EFFECT SNOW ACCUMULATIONS LATE NEXT WEEK... HOWEVER IT WILL
TAKE UNTIL EARLY TO MID NEXT WEEK BEFORE WE BECOME MORE CONFIDENT
IN THE LOCATIONS OF HIGHEST IMPACT.

.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

NYZ002-101530-
ORLEANS-
1016 AM EST FRI DEC 9 2016

...LAKE EFFECT SNOW ADVISORY IN EFFECT UNTIL 6 AM EST SATURDAY...

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.

   LAKE EFFECT SNOW ADVISORY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE WILL BE A PERIOD OF WIDESPREAD SNOW OR MIXED PRECIPITATION
SUNDAY MORNING THROUGH MONDAY MORNING. SNOWFALL AMOUNTS WILL
LIKELY REMAIN BELOW WARNING CRITERIA...BUT THIS SYSTEM MAY DROP
SEVERAL INCHES OF SNOW WHICH WOULD HINDER TRAVEL DURING THAT TIME
PERIOD.

THE COLDEST AIR YET THIS WINTER IS ON TRACK TO ARRIVE BY MID TO
LATE NEXT WEEK AND PERSIST INTO THE WEEKEND. THIS COLD AIR WILL BE
ACCOMPANIED BY ANOTHER ROUND OF SIGNIFICANT LAKE EFFECT SNOW EAST
OF LAKES ERIE AND ONTARIO. CONFIDENCE IS VERY HIGH IN SIGNIFICANT
LAKE EFFECT SNOW ACCUMULATIONS LATE NEXT WEEK... HOWEVER IT WILL
TAKE UNTIL EARLY TO MID NEXT WEEK BEFORE WE BECOME MORE CONFIDENT
IN THE LOCATIONS OF HIGHEST IMPACT.

.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

NYZ003>006-101530-
MONROE-WAYNE-NORTHERN CAYUGA-OSWEGO-
1016 AM EST FRI DEC 9 2016

...LAKE EFFECT SNOW WARNING IN EFFECT UNTIL 6 AM EST SATURDAY...

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.

   LAKE EFFECT SNOW WARNING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE WILL BE A PERIOD OF WIDESPREAD SNOW OR MIXED PRECIPITATION
SUNDAY MORNING THROUGH MONDAY MORNING. SNOWFALL AMOUNTS WILL
LIKELY REMAIN BELOW WARNING CRITERIA...BUT THIS SYSTEM MAY DROP
SEVERAL INCHES OF SNOW WHICH WOULD HINDER TRAVEL DURING THAT TIME
PERIOD.

THE COLDEST AIR YET THIS WINTER IS ON TRACK TO ARRIVE BY MID TO
LATE NEXT WEEK AND PERSIST INTO THE WEEKEND. THIS COLD AIR WILL BE
ACCOMPANIED BY ANOTHER ROUND OF SIGNIFICANT LAKE EFFECT SNOW EAST
OF LAKES ERIE AND ONTARIO. CONFIDENCE IS VERY HIGH IN SIGNIFICANT
LAKE EFFECT SNOW ACCUMULATIONS LATE NEXT WEEK... HOWEVER IT WILL
TAKE UNTIL EARLY TO MID NEXT WEEK BEFORE WE BECOME MORE CONFIDENT
IN THE LOCATIONS OF HIGHEST IMPACT.

.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

NYZ019-020-101530-
CHAUTAUQUA-CATTARAUGUS-
1016 AM EST FRI DEC 9 2016

...LAKE EFFECT SNOW WARNING IN EFFECT UNTIL 6 PM EST SATURDAY...

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.

   LAKE EFFECT SNOW WARNING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   LAKE EFFECT SNOW WARNING.

THERE WILL BE A PERIOD OF WIDESPREAD SNOW OR MIXED PRECIPITATION
SUNDAY MORNING THROUGH MONDAY MORNING. SNOWFALL AMOUNTS WILL
LIKELY REMAIN BELOW WARNING CRITERIA...BUT THIS SYSTEM MAY DROP
SEVERAL INCHES OF SNOW WHICH WOULD HINDER TRAVEL DURING THAT TIME
PERIOD.

THE COLDEST AIR YET THIS WINTER IS ON TRACK TO ARRIVE BY MID TO
LATE NEXT WEEK AND PERSIST INTO THE WEEKEND. THIS COLD AIR WILL BE
ACCOMPANIED BY ANOTHER ROUND OF SIGNIFICANT LAKE EFFECT SNOW EAST
OF LAKES ERIE AND ONTARIO. CONFIDENCE IS VERY HIGH IN SIGNIFICANT
LAKE EFFECT SNOW ACCUMULATIONS LATE NEXT WEEK... HOWEVER IT WILL
TAKE UNTIL EARLY TO MID NEXT WEEK BEFORE WE BECOME MORE CONFIDENT
IN THE LOCATIONS OF HIGHEST IMPACT.

.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-LOZ030-042>045-062>065-SLZ022-024-101530-
UPPER NIAGARA RIVER AND BUFFALO HARBOR-
LAKE ERIE NEARSHORE WATERS FROM RIPLEY TO DUNKIRK-
LAKE ERIE NEARSHORE WATERS FROM DUNKIRK TO BUFFALO-
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-
1016 AM EST FRI DEC 9 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEW YORK WATERS OF LAKE
ERIE...LAKE ONTARIO...AND THE SAINT LAWRENCE RIVER.

.DAY ONE...TODAY AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

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

CHURCH

In the hours before

Special weather statement, Dec 9, 1:34 PM EST, 3 hours 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
134 PM EST Fri Dec 9 2016

NYZ019-020-092145-
CHAUTAUQUA-CATTARAUGUS-
INCLUDING THE CITIES OF...JAMESTOWN...OLEAN
134 PM EST Fri Dec 9 2016

...Lake Effect Snow Continues Over Far Southwest New York...

Lake effect snow will continue to impact portions of Southwestern
New York from about Brocton to Ripley along I-90 and east to
about Salamanca along I-86. Snow rates will be highly
variable, but could occasionally reach 2 inches per hour. Afternoon
snowfall will approach 6 inches in hardest hit areas.

Lake effect snow will intensify toward or after sunset and move a
little to the north. This will include the I-90 corridor to about
Angola overnight. Look for another 6 inches this evening under the
heart of the snow bands.

Travelers will continue to experience highly variable conditions
across this region, with wet roadways quickly becoming snow
packed with minimal visibility at times. Be prepared for rapidly
changing conditions.

NYZ003>005-092145-
MONROE-WAYNE-NORTHERN CAYUGA-
INCLUDING THE CITIES OF...ROCHESTER...NEWARK...FAIR HAVEN
134 PM EST Fri Dec 9 2016

...Lake Effect Snow Returns This Afternoon and Evening...

After a long break this morning, expect lake effect snow to
return to portions of the Rochester Metro area, especially east
of Rochester by or after sunset. Snow rates will be highly
variable, but could occasionally reach 2 inches per hour. Snowfall
amounts may approach 6 inches in hardest hit areas by mid evening
east of Rochester.

Travelers along the Thruway from about Phelps to Weedsport should
be prepared for variable conditions later this afternoon into the
evening, with with wet roadways quickly becoming snow packed with
minimal visibility at times. Be prepared for rapidly changing
conditions.

ZAFF
Local storm report, Dec 9, 2:37 PM EST, 2 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
237 PM EST FRI DEC 09 2016

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

0244 AM     SNOW             HIGHMARKET              43.58N  75.52W
12/09/2016  M17.5 INCH       LEWIS              NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0400 AM     SNOW             1 NW CONSTABLEVILLE     43.58N  75.45W
12/09/2016  M15.5 INCH       LEWIS              NY   COCORAHS

            24 HOUR SNOWFALL.

0400 AM     SNOW             8 NNW REDFIELD          43.64N  75.88W
12/09/2016  M4.5 INCH        OSWEGO             NY   COCORAHS

            24 HOUR SNOWFALL.

0500 AM     SNOW             1 WNW FREDONIA          42.44N  79.35W
12/09/2016  M4.6 INCH        CHAUTAUQUA         NY   COCORAHS

            24 HOUR SNOWFALL.

0600 AM     SNOW             4 SSE LACONA            43.60N  76.04W
12/09/2016  M4.3 INCH        OSWEGO             NY   COCORAHS

            24 HOUR SNOWFALL.

0648 AM     SNOW             2 SW CHILI              43.09N  77.77W
12/09/2016  E4.0 INCH        MONROE             NY   SOCIAL MEDIA

0700 AM     SNOW             PORTAGEVILLE            42.57N  78.04W
12/09/2016  M3.5 INCH        WYOMING            NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0700 AM     SNOW             3 N SILVER SPRINGS      42.71N  78.09W
12/09/2016  M6.4 INCH        WYOMING            NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0700 AM     SNOW             6 SW WARSAW             42.74N  78.14W
12/09/2016  M10.0 INCH       WYOMING            NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0700 AM     SNOW             4 ENE JAMESTOWN         42.11N  79.16W
12/09/2016  M9.2 INCH        CHAUTAUQUA         NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0700 AM     SNOW             1 E OSCEOLA             43.50N  75.70W
12/09/2016  M10.0 INCH       LEWIS              NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0700 AM     SNOW             2 NE BOSTON             42.65N  78.72W
12/09/2016  M4.0 INCH        ERIE               NY   COCORAHS

            24 HOUR SNOWFALL.

0700 AM     SNOW             HOLLEY                  43.22N  78.03W
12/09/2016  E4.0 INCH        ORLEANS            NY   SOCIAL MEDIA

0700 AM     SNOW             5 N ALLEGANY            42.16N  78.49W
12/09/2016  M11.0 INCH       CATTARAUGUS        NY   COCORAHS

            24 HOUR SNOWFALL.

0700 AM     SNOW             6 N CROGHAN             43.98N  75.37W
12/09/2016  M3.5 INCH        LEWIS              NY   COCORAHS

            24 HOUR SNOWFALL.

0700 AM     SNOW             SSE ISCHUA              42.24N  78.40W
12/09/2016  M6.5 INCH        CATTARAUGUS        NY   COCORAHS

            24 HOUR SNOWFALL.

0700 AM     SNOW             3 NE BENNETTS BRIDGE    43.53N  75.95W
12/09/2016  M6.0 INCH        OSWEGO             NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0700 AM     SNOW             3 SSE FREWSBURG         42.02N  79.12W
12/09/2016  M9.0 INCH        CHAUTAUQUA         NY   COCORAHS

            24 HOUR SNOWFALL.

0700 AM     SNOW             1 SSW FRANKLINVILLE     42.33N  78.47W
12/09/2016  M6.0 INCH        CATTARAUGUS        NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0700 AM     SNOW             2 W GLENFIELD           43.71N  75.43W
12/09/2016  M4.3 INCH        LEWIS              NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0730 AM     SNOW             1 W COLDEN              42.65N  78.71W
12/09/2016  M5.0 INCH        ERIE               NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0730 AM     SNOW             1 WSW OLEAN             42.07N  78.45W
12/09/2016  M6.0 INCH        CATTARAUGUS        NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0730 AM     SNOW             1 NNE HUMPHREY          42.22N  78.53W
12/09/2016  M9.2 INCH        CATTARAUGUS        NY   TRAINED SPOTTER

0752 AM     SNOW             1 E IRONDEQUOIT         43.21N  77.55W
12/09/2016  E4.5 INCH        MONROE             NY   SOCIAL MEDIA

0800 AM     SNOW             1 NE PULASKI            43.58N  76.11W
12/09/2016  M4.5 INCH        OSWEGO             NY   COCORAHS

0800 AM     SNOW             4 SSE LACONA            43.59N  76.04W
12/09/2016  M4.3 INCH        OSWEGO             NY   COCORAHS

0800 AM     SNOW             GOWANDA                 42.46N  78.94W
12/09/2016  M12.0 INCH       CATTARAUGUS        NY   STORM CHASER

0800 AM     SNOW             LITTLE VALLEY           42.25N  78.80W
12/09/2016  M11.5 INCH       CATTARAUGUS        NY   COOP OBSERVER

0800 AM     SNOW             5 N ALLEGANY            42.16N  78.49W
12/09/2016  M11.0 INCH       CATTARAUGUS        NY   COCORAHS

0800 AM     SNOW             SSE ISCHUA              42.25N  78.40W
12/09/2016  M6.5 INCH        CATTARAUGUS        NY   COCORAHS

0800 AM     SNOW             3 NE ALTMAR             43.54N  75.96W
12/09/2016  M6.0 INCH        OSWEGO             NY   COOP OBSERVER

0800 AM     SNOW             1 NNE FRANKLINVILLE     42.35N  78.45W
12/09/2016  M6.5 INCH        CATTARAUGUS        NY   COCORAHS

0800 AM     SNOW             1 WSW OLEAN             42.08N  78.45W
12/09/2016  M6.0 INCH        CATTARAUGUS        NY   COCORAHS

0800 AM     SNOW             FORESTVILLE             42.47N  79.17W
12/09/2016  M12.0 INCH       CHAUTAUQUA         NY   TRAINED SPOTTER

0800 AM     SNOW             2 NE RIPLEY             42.29N  79.68W
12/09/2016  M9.0 INCH        CHAUTAUQUA         NY   TRAINED SPOTTER

0800 AM     SNOW             4 ENE JAMESTOWN         42.12N  79.16W
12/09/2016  M9.2 INCH        CHAUTAUQUA         NY   COOP OBSERVER

0800 AM     SNOW             2 E JAMESTOWN           42.10N  79.20W
12/09/2016  M7.8 INCH        CHAUTAUQUA         NY   COCORAHS

0800 AM     SNOW             1 WNW FREDONIA          42.45N  79.35W
12/09/2016  M4.6 INCH        CHAUTAUQUA         NY   COCORAHS

0800 AM     SNOW             CATTARAUGUS             42.33N  78.87W
12/09/2016  M14.0 INCH       CATTARAUGUS        NY   PUBLIC

0800 AM     SNOW             2 SE GLENWOOD           42.60N  78.64W
12/09/2016  M4.5 INCH        ERIE               NY   COCORAHS

            24 HOUR SNOWFALL.

0800 AM     SNOW             1 W COLDEN              42.65N  78.70W
12/09/2016  M5.3 INCH        ERIE               NY   COOP OBSERVER

0800 AM     SNOW             2 NE BOSTON             42.65N  78.71W
12/09/2016  M4.1 INCH        ERIE               NY   COCORAHS

0800 AM     SNOW             EAST CONCORD            42.55N  78.63W
12/09/2016  M17.9 INCH       ERIE               NY   TRAINED SPOTTER

0800 AM     SNOW             2 NE CONCORD            42.56N  78.70W
12/09/2016  M11.0 INCH       ERIE               NY   STORM CHASER

0800 AM     SNOW             1 NE CONCORD            42.55N  78.72W
12/09/2016  M11.0 INCH       ERIE               NY   TRAINED SPOTTER

0800 AM     SNOW             LITTLE VALLEY           42.25N  78.81W
12/09/2016  M11.5 INCH       CATTARAUGUS        NY   COOP OBSERVER

            24 HOUR SNOWFALL. COOP OBSERVER

0800 AM     SNOW             SARDINIA                42.53N  78.50W
12/09/2016  M12.0 INCH       ERIE               NY   TRAINED SPOTTER

0800 AM     SNOW             COLLINS                 42.50N  78.92W
12/09/2016  M10.0 INCH       ERIE               NY   POST OFFICE

0800 AM     SNOW             1 W SPRINGVILLE         42.51N  78.69W
12/09/2016  M5.0 INCH        ERIE               NY   STORM CHASER

0800 AM     SNOW             2 W BOSTON              42.63N  78.77W
12/09/2016  M4.0 INCH        ERIE               NY   STORM CHASER

0800 AM     SNOW             8 SW WARSAW             42.66N  78.25W
12/09/2016  M11.0 INCH       WYOMING            NY   COCORAHS

0800 AM     SNOW             6 SW WARSAW             42.68N  78.22W
12/09/2016  M10.0 INCH       WYOMING            NY   COOP OBSERVER

0800 AM     SNOW             3 N SILVER SPRINGS      42.70N  78.08W
12/09/2016  M6.4 INCH        WYOMING            NY   COOP OBSERVER

0800 AM     SNOW             2 ENE COLDEN            42.65N  78.61W
12/09/2016  M4.5 INCH        ERIE               NY   COCORAHS

            24 HOUR SNOWFALL.

0800 AM     SNOW             PORTAGEVILLE            42.57N  78.05W
12/09/2016  M3.5 INCH        WYOMING            NY   COOP OBSERVER

0800 AM     SNOW             HOLLEY                  43.22N  78.03W
12/09/2016  M4.0 INCH        ORLEANS            NY   SOCIAL MEDIA

0800 AM     SNOW             6 N CROGHAN             43.98N  75.39W
12/09/2016  M5.5 INCH        LEWIS              NY   COCORAHS

0800 AM     SNOW             CROGHAN                 43.90N  75.39W
12/09/2016  M4.0 INCH        LEWIS              NY   SOCIAL MEDIA

0800 AM     SNOW             LOWVILLE                43.79N  75.49W
12/09/2016  M5.0 INCH        LEWIS              NY   PUBLIC

0800 AM     SNOW             HIGHMARKET              43.58N  75.53W
12/09/2016  M17.5 INCH       LEWIS              NY   COOP OBSERVER

0800 AM     SNOW             1 NW CONSTABLEVILLE     43.57N  75.44W
12/09/2016  M15.5 INCH       LEWIS              NY   COCORAHS

0800 AM     SNOW             1 E OSCEOLA             43.50N  75.70W
12/09/2016  M10.0 INCH       LEWIS              NY   COOP OBSERVER

0800 AM     SNOW             BLACK RIVER             44.01N  75.80W
12/09/2016  M8.0 INCH        JEFFERSON          NY   POST OFFICE

0800 AM     SNOW             WATERTOWN               43.97N  75.91W
12/09/2016  M6.2 INCH        JEFFERSON          NY   TRAINED SPOTTER

0800 AM     SNOW             EVANS MILLS             44.09N  75.81W
12/09/2016  M6.0 INCH        JEFFERSON          NY   SOCIAL MEDIA

0800 AM     SNOW             FORT DRUM               44.05N  75.77W
12/09/2016  M6.0 INCH        JEFFERSON          NY   SOCIAL MEDIA

0800 AM     SNOW             LORRAINE                43.77N  75.96W
12/09/2016  M4.0 INCH        JEFFERSON          NY   SOCIAL MEDIA

0800 AM     SNOW             ENE WEST CARTHAGE       43.97N  75.62W
12/09/2016  M4.0 INCH        JEFFERSON          NY   COCORAHS

0800 AM     SNOW             IRONDEQUOIT             43.21N  77.57W
12/09/2016  M4.5 INCH        MONROE             NY   SOCIAL MEDIA

0800 AM     SNOW             2 SW CHILI              43.09N  77.77W
12/09/2016  M4.0 INCH        MONROE             NY   TRAINED SPOTTER

0800 AM     SNOW             8 NNW REDFIELD          43.64N  75.89W
12/09/2016  M12.0 INCH       OSWEGO             NY   COCORAHS

0800 AM     SNOW             REDFIELD                43.53N  75.83W
12/09/2016  M8.0 INCH        OSWEGO             NY   SOCIAL MEDIA

1000 AM     SNOW             2 NW BOLIVAR            42.09N  78.19W
12/09/2016  M4.0 INCH        ALLEGANY           NY   PUBLIC

0121 PM     SNOW             1 NW SHERMAN            42.17N  79.61W
12/09/2016  E15.0 INCH       CHAUTAUQUA         NY   TRAINED SPOTTER

&&

EVENT NUMBER BUF1601215
EVENT NUMBER BUF1601216
EVENT NUMBER BUF1601217
EVENT NUMBER BUF1601218
EVENT NUMBER BUF1601219
EVENT NUMBER BUF1601220
EVENT NUMBER BUF1601221
EVENT NUMBER BUF1601222
EVENT NUMBER BUF1601223
EVENT NUMBER BUF1601224
EVENT NUMBER BUF1601225
EVENT NUMBER BUF1601226
EVENT NUMBER BUF1601227
EVENT NUMBER BUF1601228
EVENT NUMBER BUF1601229
EVENT NUMBER BUF1601230
EVENT NUMBER BUF1601231
EVENT NUMBER BUF1601232
EVENT NUMBER BUF1601233
EVENT NUMBER BUF1601234
EVENT NUMBER BUF1601235
EVENT NUMBER BUF1601236
EVENT NUMBER BUF1601237
EVENT NUMBER BUF1601238
EVENT NUMBER BUF1601239
EVENT NUMBER BUF1601240
EVENT NUMBER BUF1601241
EVENT NUMBER BUF1601242
EVENT NUMBER BUF1601243
EVENT NUMBER BUF1601244
EVENT NUMBER BUF1601245
EVENT NUMBER BUF1601246
EVENT NUMBER BUF1601247
EVENT NUMBER BUF1601248
EVENT NUMBER BUF1601249
EVENT NUMBER BUF1601250
EVENT NUMBER BUF1601251
EVENT NUMBER BUF1601252
EVENT NUMBER BUF1601253
EVENT NUMBER BUF1601254
EVENT NUMBER BUF1601255
EVENT NUMBER BUF1601256
EVENT NUMBER BUF1601257
EVENT NUMBER BUF1601258
EVENT NUMBER BUF1601259
EVENT NUMBER BUF1601260
EVENT NUMBER BUF1601261
EVENT NUMBER BUF1601262
EVENT NUMBER BUF1601263
EVENT NUMBER BUF1601264
EVENT NUMBER BUF1601265
EVENT NUMBER BUF1601266
EVENT NUMBER BUF1601267
EVENT NUMBER BUF1601268
EVENT NUMBER BUF1601269
EVENT NUMBER BUF1601270
EVENT NUMBER BUF1601271
EVENT NUMBER BUF1601272
EVENT NUMBER BUF1601273
EVENT NUMBER BUF1601274
EVENT NUMBER BUF1601275
EVENT NUMBER BUF1601276
EVENT NUMBER BUF1601277
EVENT NUMBER BUF1601278
EVENT NUMBER BUF1601279
EVENT NUMBER BUF1601280
EVENT NUMBER BUF1601281
EVENT NUMBER BUF1601282
EVENT NUMBER BUF1601283
EVENT NUMBER BUF1601284
EVENT NUMBER BUF1601285
EVENT NUMBER BUF1601286
EVENT NUMBER BUF1601287
EVENT NUMBER BUF1601288

SJW
Local storm report, Dec 9, 4:40 PM EST, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
440 PM EST FRI DEC 09 2016

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

0430 PM     SNOW             3 SSE FREWSBURG         42.02N  79.14W
12/09/2016  M22.0 INCH       CHAUTAUQUA         NY   COCORAHS

&&

EVENT NUMBER BUF1601289

SJW
Special weather statement, Dec 9, 4:58 PM EST, 0 minutes before
Special Weather Statement
National Weather Service Buffalo NY
458 PM EST FRI DEC 9 2016

NYZ019-020-092330-
Cattaraugus-Chautauqua-
458 PM EST FRI DEC 9 2016

...A BAND OF LAKE EFFECT SNOW WILL AFFECT SOUTHWESTERN CATTARAUGUS
AND SOUTHERN CHAUTAUQUA COUNTIES...

At 457 PM EST, A band of lake effect snow producing snow fall rates
of up to 2 inches per hour will continue through early evening from
near Ripley to Chautauqua Lake and Frewsburg. This band will remain
nearly stationary, with just a slight drift to the northeast over
the next hour or two.

Locations impacted include...
Jamestown, Lakewood, Falconer, Mayville, Chautauqua Institute,
Jamestown West, Long Point State Park, Frewsburg and Chautauqua.

This includes the following highways...
 Interstate 90 near exit 61.
 Interstate 86 between exits 6 and 13.

Use extra caution if you must travel into or through this dangerous
snow squall. Rapid changes in visibility and potentially slick roads
are likely to lead to accidents. Consider delaying travel until the
squall passes your location.

LAT...LON 4233 7972 4200 7869 4200 7932 4217 7976
      4227 7976 4228 7973 4231 7977

Hitchcock

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 8, 7:02 PM ESTSpecial Weather StatementBUFCattaraugus, Chautauqua88 min
Dec 8, 7:05 PM ESTSpecial Weather StatementBUFOswego85 min
Dec 8, 8:41 PM ESTSpecial Weather StatementBUFLewis, Oswego94 min
Dec 8, 10:31 PM ESTSpecial Weather StatementBUFOswego89 min
Dec 8, 11:53 PM ESTSpecial Weather StatementBUFMonroe, Orleans, Wayne112 min
Dec 9, 4:26 AM ESTSpecial Weather StatementBUFCattaraugus, Chautauqua109 min
Dec 9, 8:53 AM ESTSpecial Weather StatementBUFGenesee, Niagara, Orleans52 min
Dec 9, 6:33 PM ESTSpecial Weather StatementBUFChautauqua87 min

Nearby

Special Weather Statements in New York, 2016Every special weather statement in 2016

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.