Alert archive / New York / Winter Weather Advisories in 2018

Winter Weather Advisory 47, NWS Buffalo, NY

February 3, 2018Jefferson County, Lewis County, Oswego County, New York

NWS Buffalo, NY issued this winter weather advisory at Feb 3, 2018, 2:36 PM EST for Jefferson County, Lewis County, Oswego County, New York. It took effect at Feb 4, 2018, 6:00 AM EST. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued
Feb 3, 2018, 2:36 PM EST (19:36 UTC)
In effect from
Feb 4, 2018, 6:00 AM EST
Expired
Feb 5, 2018, 3:47 AM EST
In force
22 hr
Issued by
NWS Buffalo, NY

Counties Jefferson County, NY, Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 18 km from the middle of the area, began a volume at 19:36 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, 7.6 hours before the alert went out and 244 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 2018-02-03Temperature 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 2018-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 197 square meters per square second.1939587897117136156Sfc1 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
771 m above ground
0-6 km bulk shear
98 kt
0-1 km storm-relative helicity
197 m²/s²
0-3 km storm-relative helicity
351 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter weather advisory 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 winter weather advisory went out at Feb 3, 2:25 PM EST, 11 minutes earlier.

Area forecast discussion, Feb 3, 2:25 PM EST, 11 minutes before
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Hazardous weather outlook, Feb 3, 2:36 PM EST, 0 minutes before
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In the hours before

Local storm report, Feb 3, 8:46 AM EST, 5 hours 50 minutes before
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Local storm report, Feb 3, 9:39 AM EST, 4 hours 57 minutes before
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Special weather statement, Feb 3, 10:57 AM EST, 3 hours 39 minutes before
Special Weather Statement
National Weather Service Buffalo NY
1057 AM EST SAT FEB 3 2018

NYZ007-008-031700-
Jefferson-Lewis-
1057 AM EST SAT FEB 3 2018

...A BAND OF LAKE EFFECT SNOW WILL AFFECT JEFFERSON AND NORTHERN
LEWIS COUNTIES...

At 1052 AM EST, A band of lake effect snow producing snow fall rates
of 2 to 3 inches per hour will continue to slowly drift northward
across Jefferson County through late this morning. This band will
become position across extreme northern Jefferson county by early
this afternoon where it will remain the rest of of the afternoon
then weaken.

Locations impacted include...
Watertown, Fort Drum, Stony Point, Carthage, West Carthage, Clayton,
Adams, Dexter, Glen Park and Herrings.

This includes Interstate 81 between exits 41 and 52.

Visibilities will drop quickly to less than a quarter of a mile in
this band of lake effect snow.

If traveling across the area expect rapidly changing weather
conditions and snow covered roadways.
.

LAT...LON 4410 7517 4383 7514 4374 7628 4378 7629
      4383 7636 4387 7635 4384 7645 4385 7649
      4390 7650 4396 7644 4396 7634 4402 7636
      4405 7642 4410 7643 4414 7635 4420 7631
      4422 7620 4429 7615 4435 7595 4440 7586

Reynolds
Local storm report, Feb 3, 11:31 AM EST, 3 hours 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1131 AM EST SAT FEB 03 2018

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

0600 AM     SNOW             7 SW ATTICA             42.80N  78.39W
02/03/2018  M4.7 INCH        WYOMING            NY   CO-OP OBSERVER

            24-HOUR SNOWFALL.

0700 AM     SNOW             8 N REDFIELD            43.64N  75.88W
02/03/2018  M17.1 INCH       OSWEGO             NY   CO-OP OBSERVER

            24-HOUR SNOWFALL.

1100 AM     SNOW             5 WSW HARRISBURG        43.80N  75.69W
02/03/2018  E8.0 INCH        LEWIS              NY   MESONET

1115 AM     SNOW             S WATERTOWN             43.97N  75.91W
02/03/2018  M3.6 INCH        JEFFERSON          NY   COCORAHS

            ONE HOUR SNOWFALL

&&

EVENT NUMBER BUF1800352
EVENT NUMBER BUF1800353
EVENT NUMBER BUF1800354
EVENT NUMBER BUF1800355

CHURCH
Local storm report, Feb 3, 1:23 PM EST, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
123 PM EST SAT FEB 03 2018

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

0800 AM     SNOW             2 ENE IRA               43.23N  76.52W
02/02/2018  M11.5 INCH       CAYUGA             NY   FIRE DEPT/RESCUE

&&

EVENT NUMBER BUF1800356

SJW
Special weather statement, Feb 3, 1:40 PM EST, 56 minutes before
Special Weather Statement
National Weather Service Buffalo NY
140 PM EST SAT FEB 3 2018

NYZ007-008-032000-
Jefferson-Lewis-
140 PM EST SAT FEB 3 2018

...A BAND OF HEAVY LAKE EFFECT SNOW CONTINUES TO AFFECT JEFFERSON
AND NORTHERN LEWIS COUNTIES...

At 136 PM EST, A band of heavy lake effect snow producing snow fall
rates of 2 to 4 inches per hour will continue across the Watertown
and Fort Drum area early this afternoon, while slowly drifting
northward toward the Saint Lawrence River Valley by mid-afternoon.

Conditions will deteriorate rapidly in this intense band of lake
effect snow. Be prepared for deep snow covered roads. Slow down and
allow extra time when traveling, and consider postponing travel
until the heavy snow passes.

Visibilities will drop quickly to less than a quarter of a mile in
this band of lake effect snow.

Locations impacted include...
Watertown, Fort Drum, Carthage, West Carthage, Dexter, Glen Park,
Herrings, Adams Center, Henderson Harbor and Denmark.

This includes Interstate 81 between exits 42 and 49.

LAT...LON 4382 7629 4390 7632 4392 7628 4393 7631
      4391 7633 4402 7636 4411 7641 4427 7557
      4410 7517 4395 7515

Church

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 2, 11:07 PM ESTSpecial Weather StatementBUFGenesee113 min
Feb 3, 12:11 AM ESTSpecial Weather StatementBUFOswego2 hr
Feb 3, 4:11 AM ESTSpecial Weather StatementBUFJefferson109 min
Feb 3, 6:03 AM ESTSpecial Weather StatementBUFJefferson117 min
Feb 3, 8:04 AM ESTSpecial Weather StatementBUFJefferson116 min
Feb 3, 10:57 AM ESTSpecial Weather StatementBUFJefferson63 min
Feb 3, 1:40 PM ESTSpecial Weather StatementBUFJefferson80 min
Feb 3, 3:17 PM ESTSpecial Weather StatementBUFJefferson43 min
Feb 3, 3:57 PM ESTSmall Craft AdvisoryBUF51 hr

Nearby

Winter Weather Advisories in New York, 2018Every winter weather advisory in 2018

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.