Alert archive / New York / Special Weather Statements in 2017

Special Weather Statement, NWS Buffalo, NY

December 25, 2017Lewis County, Oswego County, New York

NWS Buffalo, NY issued this special weather statement at Dec 25, 2017, 7:48 PM EST for Lewis County, Oswego County, New York. It was in force for 57 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 25, 2017, 7:48 PM EST (00:48 UTC)
Expired: Dec 25, 2017, 8:45 PM EST
In force: 57 min
Issued by: NWS Buffalo, NY

Counties Lewis County, NY, Oswego County, NY

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 0.8 hours before the alert went out and 219 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1939 m above ground
0-6 km bulk shear: 129 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 25, 4:33 PM EST, 3 hours 15 minutes earlier.

Area forecast discussion, Dec 25, 4:33 PM EST, 3 hours 15 minutes before

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Hazardous weather outlook, Dec 25, 3:00 PM EST, 4 hours 48 minutes before

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In the hours before

Special weather statement, Dec 25, 5:23 PM EST, 2 hours 25 minutes before

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Local storm report, Dec 25, 5:26 PM EST, 2 hours 22 minutes before

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Special weather statement, Dec 25, 6:52 PM EST, 56 minutes before

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Special weather statement, Dec 25, 6:54 PM EST, 54 minutes before

Special Weather Statement
National Weather Service Buffalo NY
654 PM EST MON DEC 25 2017

NYZ006>008-260045-
Jefferson-Oswego-Lewis-
654 PM EST MON DEC 25 2017

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

At 653 PM EST, A band of lake effect snow producing snow fall rates
of 2 to 4 inches per hour was  extending inland from Lake Ontario.
The northern edge of the lake band is located along a line from near
Ellisburg to near North Osceola. The southern edge of the lake
effect band extends along a line from near Scriba to near Kasoag.
Blowing and drifting snow is also occuring with this lake effect
band.

Locations impacted include...
Oswego, Sandy Island Beach State Park, Stony Point, Lowville,
Pulaski, West Carthage, Adams, Redfield, Selkirk Shores State Park
and Highmarket.

This includes Interstate 81 between exits 34 and 44.

Driving within this snow band will be extremely difficult with snow
covered roads and visibilities down to near zero at times. If you
must travel across this area, slow down and allow plenty of extra
time to reach your destination.

LAT...LON 4342 7553 4348 7581 4342 7585 4347 7660
      4356 7645 4356 7631 4358 7626 4378 7629
      4383 7636 4387 7635 4384 7645 4385 7649
      4389 7650 4390 7644 4400 7516 4361 7511

Welch

Special weather statement, Dec 25, 7:48 PM EST, 0 minutes before

Special Weather Statement
National Weather Service Buffalo NY
748 PM EST MON DEC 25 2017

NYZ006>008-260145-
Jefferson-Oswego-Lewis-
748 PM EST MON DEC 25 2017

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

At 747 PM EST, A band of lake effect snow producing snow fall rates
of 2 to 4 inches per hour was extending inland from Lake Ontario.
The northern edge of the lake band is located along a line from near
Henderson to near Lowville. The southern edge of the lake effect
band extends along a line from near Selkirk Beach to North Osceola
to Mohawk Hill. Blowing and drifting snow is also occuring with this
lake effect band.

Locations impacted include...
Oswego, Sandy Island Beach State Park, Stony Point, Carthage,
Lowville, Pulaski, West Carthage, Adams, Redfield and Selkirk Shores
State Park.

This includes Interstate 81 between exits 34 and 44.

Driving within this snow band will be extremely difficult with snow
covered roads and visibilities down to near zero at times. If you
must travel across this area, slow down and allow plenty of extra
time to reach your destination.

LAT...LON 4342 7553 4348 7581 4341 7585 4347 7661
      4356 7645 4356 7631 4358 7626 4378 7629
      4383 7636 4387 7635 4384 7645 4385 7649
      4390 7650 4391 7645 4392 7632 4391 7632
      4390 7633 4392 7628 4400 7516 4361 7511

Welch

Special weather statement, Dec 25, 7:48 PM EST, 0 minutes before

Special Weather Statement
National Weather Service Buffalo NY
748 PM EST MON DEC 25 2017

NYZ012-013-019-020-085-260200-
Chautauqua-Cattaraugus-Livingston-Southern Erie-Wyoming-
748 PM EST MON DEC 25 2017

...INTENSE LAKE EFFECT SNOW WILL CONTINUE TO IMPACT THE AREA...

At 738 PM EST, National Weather Service radar showed a band of
intense lake effect snow producing snowfall rates of 2 to 3 inches
per hour. This snow band was 15 to 20 miles wide with the northern
edge extending from Silver Creek to Holland to Geneseo, and the
southern edge extending from Sherman to Arcade to Mount Morris.

There has been a little southward drift to the band and this trend
will continue through the remainder of the evening.

This snow band will continue to hit southern portions of Erie and
Wyoming counties, as well as the western Southern Tier north of
Interstate 86 hard through midnight.

Winds gusting as high as 35 mph will create near whiteout
conditions.

Locations impacted include...
Dunkirk, Fredonia, Geneseo, Letchworth State Park, Boston,
Springville, Perry, Warsaw, Colden and Westfield.

This includes the following highways...
 Interstate 390 between exits 6 and 10.
 Interstate 90 between exits 60 and 59.

Driving within this snow band will be extremely difficult with
snow covered roads and visibilities down to near zero at times.

Travel is not recommended in this area! If you must travel across
this area, slow down and allow plenty of extra time to reach your
destination.

LAT...LON 4238 7963 4244 7950 4293 7761 4267 7764
      4252 7825 4252 7831 4250 7831 4213 7974

TMA

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 25, 8:48 PM EST	Special Weather Statement	BUF	Lewis, Oswego	57 min
Dec 25, 9:10 PM EST	Special Weather Statement	BUF	Chautauqua, Wyoming	65 min
Dec 25, 9:50 PM EST	Special Weather Statement	BUF	Lewis, Oswego	85 min
Dec 25, 10:40 PM EST	Special Weather Statement	BUF	Chautauqua, Livingston	50 min
Dec 26, 4:14 AM EST	Small Craft Advisory	BUF		62 hr
Dec 26, 5:34 AM EST	Special Weather Statement	BUF	Lewis	116 min
Dec 26, 7:49 AM EST	Special Weather Statement	BUF	Lewis	3 hr
Dec 26, 10:40 AM EST	Special Weather Statement	BUF	Lewis	3 hr
Dec 26, 1:34 PM EST	Special Weather Statement	BUF	Lewis	3 hr
Dec 26, 2:22 PM EST	Winter Weather Advisory	BUF	Monroe, Niagara, Orleans, Wayne	29 hr
Dec 26, 4:33 PM EST	Special Weather Statement	BUF	Lewis	117 min
Dec 26, 6:30 PM EST	Special Weather Statement	BUF	Lewis	2 hr

Nearby

Special Weather Statements in New York, 2017 Every special weather statement in 2017

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.