Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

August 10, 2021Jefferson County, New York

NWS Buffalo, NY issued this special weather statement at Aug 10, 2021, 9:29 PM EDT for Jefferson County, New York. It was in force for 31 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: Aug 10, 2021, 9:29 PM EDT (01:29 UTC)
Expired: Aug 10, 2021, 10:00 PM EDT
In force: 31 min
Issued by: NWS Buffalo, NY
Hail: 0.00 in
Wind: 40

County Jefferson County, NY

The radar

The Ft Drum radar (KTYX), 14 km from the middle of the area, began a volume at 01:33 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

Albany, NY (KALY), launched 00:00Z, 1.5 hours before the alert went out and 203 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: 159 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 984 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

As transmitted.

397 
WWUS81 KBUF 110129
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
929 PM EDT Tue Aug 10 2021
 
NYZ007-008-110200-
Jefferson NY-Lewis NY-
929 PM EDT Tue Aug 10 2021

...A strong thunderstorm will impact portions of southeastern
Jefferson and west central Lewis Counties through 1000 PM EDT...

At 928 PM EDT, Doppler radar was tracking a strong thunderstorm over
Barnes Corners, or 11 miles south of Watertown, moving northeast at
35 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
West Carthage, Adams, Barnes Corners, Southwick Beach State Park,
Adams Center, Denmark, Rodman, Lorraine, Copenhagen, Mannsville,
Castorland, Ellisburg, Worth, East Rodman, Bellwood, Belleville and
Rector.

This includes Interstate 81 between exits 38 and 41.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4382 7545 4369 7588 4371 7602 4367 7602
      4367 7607 4376 7622 4401 7567
TIME...MOT...LOC 0128Z 242DEG 29KT 4381 7584 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Welch

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 10:04 PM EDT	Special Weather Statement	BUF	Lewis	41 min
Aug 10, 10:47 PM EDT	Flash Flood Warning	BUF	Jefferson, Lewis	5 hr
Aug 11, 4:38 AM EDT	Special Weather Statement	BUF	Chautauqua, Erie, Niagara	52 min
Aug 11, 5:37 AM EDT	Special Weather Statement	BUF	Chautauqua	53 min
Aug 11, 5:41 AM EDT	Special Marine Warning	BUF		64 min
Aug 11, 6:09 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	51 min
Aug 11, 6:27 AM EDT	Special Marine Warning	BUF		93 min
Aug 11, 6:40 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Wyoming	65 min
Aug 11, 6:48 AM EDT	Special Marine Warning	BUF		42 min
Aug 11, 7:16 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Genesee, Livingston, Monroe, Wyoming	59 min
Aug 11, 7:39 AM EDT	Special Weather Statement	BUF	Genesee, Monroe	81 min
Aug 11, 7:46 AM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Orleans	50 min
Aug 11, 7:55 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wayne	50 min
Aug 11, 8:09 AM EDT	Special Marine Warning	BUF		96 min
Aug 11, 8:25 AM EDT	Special Weather Statement	BUF	Wayne	65 min
Aug 11, 9:18 AM EDT	Special Weather Statement	BUF	Oswego	27 min
Aug 11, 1:44 PM EDT	Small Craft Advisory	BUF		6 hr
Aug 11, 6:52 PM EDT	Special Weather Statement	BUF	Chautauqua	38 min

Nearby

Special Weather Statements in New York, 2021 Every special weather statement in 2021

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.