Alert archive / New York / Special Weather Statements in 2018

Special Weather Statement, NWS Buffalo, NY

November 10, 2018Chautauqua County, Livingston County, Wyoming County, New York

NWS Buffalo, NY issued this special weather statement at Nov 10, 2018, 9:06 AM EST for Chautauqua County, Livingston County, Wyoming County, New York. It was in force for 114 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
Nov 10, 2018, 9:06 AM EST (14:06 UTC)
Expired
Nov 10, 2018, 11:00 AM EST
In force
114 min
Issued by
NWS Buffalo, NY

Counties Chautauqua County, NY, Livingston County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 52 km from the middle of the area, began a volume at 14:09 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

Pittsburgh, PA (KAGC), launched 12:00Z, 2.1 hours before the alert went out and 256 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, Pittsburgh, PA at 12:00Z on 2018-11-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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, Pittsburgh, PA at 12:00Z on 2018-11-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939587897117136Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
994 m above ground
0-6 km bulk shear
108 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
65 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 Nov 10, 6:22 AM EST, 2 hours 44 minutes earlier.

Area forecast discussion, Nov 10, 6:22 AM EST, 2 hours 44 minutes before
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Hazardous weather outlook, Nov 10, 8:59 AM EST, 7 minutes before
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In the hours before

Special weather statement, Nov 10, 5:29 AM EST, 3 hours 37 minutes before
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Special weather statement, Nov 10, 7:35 AM EST, 1 hour 31 minutes before
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Local storm report, Nov 10, 7:56 AM EST, 1 hour 10 minutes before
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Local storm report, Nov 10, 8:02 AM EST, 1 hour 4 minutes before
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Local storm report, Nov 10, 9:02 AM EST, 4 minutes before
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Special weather statement, Nov 10, 9:06 AM EST, 0 minutes before
Special Weather Statement
National Weather Service Buffalo NY
906 AM EST SAT NOV 10 2018

NYZ012-013-019>021-085-101600-
Chautauqua-Cattaraugus-Allegany-Livingston-Southern Erie-Wyoming-
906 AM EST SAT NOV 10 2018

...A BAND OF LAKE EFFECT SNOW WILL AFFECT WYOMING...NORTHERN
CATTARAUGUS...SOUTHERN ERIE...SOUTHERN LIVINGSTON...NORTHERN
CHAUTAUQUA AND NORTHERN ALLEGANY COUNTIES...

A band of heavy lake effect snow producing snow fall rates of around
2 inches per hour will continue through late morning. The heaviest
snow will focus from the Lake Erie shore of Chautauqua County inland
across northern Cattaraugus, northern Allegany, southern Erie, and
western Wyoming counties. A narrow band will also extend across
Letchworth State Park and into southern Livingston County.

Winds of up to 40 mph are expected in and near this band of lake
effect snow, producing blowing and drifting snow and very poor
visibility.

This includes the following highways...
 Interstate 390 between exits 4 and 7.
 Interstate 90 between exits 61 and 57A.

Use extra caution if you must travel into or through this dangerous
band of lake effect snow. Be prepared for severe winter driving
conditions with very poor visibility and deep snow cover on roads.

LAT...LON 4232 7977 4244 7950 4253 7939 4259 7919
      4267 7912 4280 7832 4275 7765 4258 7760
      4258 7766 4253 7766 4253 7772 4244 7773
      4240 7870 4219 7976 4227 7976 4228 7973

Hitchcock

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 10, 3:19 AM ESTWinter Storm WarningBUFCattaraugus, Chautauqua, Erie, Wyoming15 hr
Nov 10, 3:20 AM ESTWind AdvisoryBUFCayuga, Monroe, Wayne15 hr
Nov 10, 7:35 AM ESTSpecial Weather StatementBUFAllegany, Cattaraugus, Chautauqua, Wyoming85 min
Nov 10, 12:46 PM ESTSpecial Weather StatementBUFJefferson, Lewis59 min
Nov 10, 1:47 PM ESTSpecial Weather StatementBUFJefferson, Lewis58 min
Nov 10, 4:34 PM ESTSnow Squall WarningBUFCayuga, Lewis, Oswego41 min
Nov 10, 5:12 PM ESTSnow Squall WarningBUFCayuga, Lewis, Oswego48 min

Nearby

Special Weather Statements in New York, 2018Every special weather statement 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.