Alert archive / New York / Special Weather Statements in 2019

Special Weather Statement, NWS Buffalo, NY

January 30, 2019Jefferson County, New York

NWS Buffalo, NY issued this special weather statement at Jan 30, 2019, 8:38 PM EST for Jefferson County, New York. It was in force for 112 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
Jan 30, 2019, 8:38 PM EST (01:38 UTC)
Expired
Jan 30, 2019, 10:30 PM EST
In force
112 min
Issued by
NWS Buffalo, NY

County Jefferson County, NY

The radar

The Ft Drum radar (KTYX), 42 km from the middle of the area, began a volume at 01:38 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 00:00Z, 1.6 hours before the alert went out and 237 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 00:00Z on 2019-01-31Temperature 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 00:00Z on 2019-01-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 square meters per square second.1939587897Sfc1 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
702 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
87 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 Jan 30, 7:26 PM EST, 1 hour 12 minutes earlier.

Area forecast discussion, Jan 30, 7:26 PM EST, 1 hour 12 minutes before
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Hazardous weather outlook, Jan 30, 6:45 PM EST, 1 hour 53 minutes before
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In the hours before

Special weather statement, Jan 30, 4:31 PM EST, 4 hours 7 minutes before
Special Weather Statement
National Weather Service Buffalo NY
431 PM EST WED JAN 30 2019

NYZ007-008-302315-
Jefferson-Lewis-
431 PM EST WED JAN 30 2019

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

At 421 PM EST, A band of lake effect snow producing snow fall rates
of 2 to 3 inches per hour continues from Cape Vincent east to
Harrisville.  This band is expected to drift further south during
the remainder of the afternoon. Meanwhile, a weaker band to the
south near Adams is drifting north and merging with the stronger
band over the Black River Valley.  Both bands will continue to edge
closer to each other with a single intense band from Watertown east
later this evening.  This will produce blizzard conditions with
frequent whiteouts.  This will create a dangerous situation for
anyone on both primary and secondary roadways.

Meanwhile, temperatures are only a few degrees above zero and will
drop below zero this evening.  This together with increasing winds,
will create windchills that will drop to -25 below zero this
evening.  As a result, spending time outside may lead to a life
threatening situation without proper winter gear.

Locations impacted include...
Watertown, Sandy Island Beach State Park, Fort Drum,
Stony Point, Carthage, Lowville, West Carthage, Clayton, Adams,
Dexter, Glen Park, Herrings, Adams Center, Redwood, Henderson
Harbor, and Barnes Corners.

This includes Interstate 81 between exits 38 and 51.

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

LAT...LON 4440 7583 4439 7584 4410 7517 4371 7512
      4365 7577 4369 7579 4371 7602 4367 7602
      4368 7618 4365 7615 4360 7626 4378 7629
      4383 7636 4387 7635 4384 7645 4387 7650
      4396 7644 4396 7634 4410 7643 4419 7632

Zaff
Special weather statement, Jan 30, 6:02 PM EST, 2 hours 36 minutes before
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Special weather statement, Jan 30, 6:09 PM EST, 2 hours 29 minutes before
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Local storm report, Jan 30, 6:37 PM EST, 2 hours 1 minute before
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Special weather statement, Jan 30, 8:23 PM EST, 15 minutes before
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Special weather statement, Jan 30, 8:38 PM EST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 30, 8:23 PM ESTSpecial Weather StatementBUFErie, Genesee97 min
Jan 31, 4:33 AM ESTSmall Craft AdvisoryBUF29 hr
Jan 31, 5:21 AM ESTFlash Flood WatchBUFErie, Niagara5 hr
Jan 31, 6:43 AM ESTSpecial Weather StatementBUFLewis107 min
Jan 31, 8:54 AM ESTSpecial Weather StatementBUFLewis3 hr
Jan 31, 9:32 AM ESTSpecial Weather StatementBUFErie, Genesee3 hr
Jan 31, 11:36 AM ESTSpecial Weather StatementBUFLewis114 min
Jan 31, 12:25 PM ESTSpecial Weather StatementBUFErie, Genesee110 min
Jan 31, 12:48 PM ESTWind Chill AdvisoryBUFAllegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more22 hr
Jan 31, 1:21 PM ESTSpecial Weather StatementBUFJefferson, Lewis3 hr
Jan 31, 2:11 PM ESTSpecial Weather StatementBUFErie2 hr
Jan 31, 4:14 PM ESTSpecial Weather StatementBUFJefferson91 min
Jan 31, 6:19 PM ESTSpecial Weather StatementBUFJefferson116 min

Nearby

Special Weather Statements in New York, 2019Every special weather statement in 2019

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.