Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 26, 2021Jefferson County, New York

NWS Buffalo, NY issued this special weather statement at Jul 26, 2021, 6:38 PM EDT for Jefferson County, New York. It was in force for 52 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: Jul 26, 2021, 6:38 PM EDT (22:38 UTC)
Expired: Jul 26, 2021, 7:30 PM EDT
In force: 52 min
Issued by: NWS Buffalo, NY

County Jefferson County, NY

The radar

The Ft Drum radar (KTYX), 60 km from the middle of the area, began a volume at 22:40 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 12:00Z, 10.6 hours before the alert went out and 236 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: 1102 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

604 
WWUS81 KBUF 262238
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
638 PM EDT Mon Jul 26 2021

NYZ007-008-262330-
Jefferson-Lewis-
638 PM EDT Mon Jul 26 2021

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN JEFFERSON
AND NORTHEASTERN LEWIS COUNTIES...

At 635 PM EDT, strong thunderstorms continued to move southeast 
across the St. Lawrence river into northern Jefferson and Lewis 
counties, moving southeast at 45 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Kring Point State Park, Wellesley Island State Park, Redwood,
Alexandria Bay, Theresa, Antwerp, Harrisville, Plessis, Oxbow,
Muskellunge Lake and Lake Bonaparte.

This includes Interstate 81 between exits 50 and 51.
 
Torrential rainfall is also occurring with these training storms, 
and may cause localized flooding. Do not drive your vehicle through 
flooded roadways.

LAT...LON 4440 7583 4439 7584 4410 7517 4398 7516
      4430 7605 4434 7603 4434 7597 4440 7586
TIME...MOT...LOC 2235Z 293DEG 39KT 4436 7590 
$$

Levan

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 5:52 AM EDT	Special Weather Statement	BUF	Niagara	53 min
Jul 26, 6:43 AM EDT	Special Weather Statement	BUF	Niagara	62 min
Jul 26, 4:47 PM EDT	Special Marine Warning	BUF		43 min
Jul 26, 5:15 PM EDT	Special Weather Statement	BUF	Jefferson	60 min
Jul 26, 5:50 PM EDT	Special Marine Warning	BUF		55 min
Jul 26, 6:10 PM EDT	Special Weather Statement	BUF	Jefferson	65 min
Jul 26, 6:39 PM EDT	Special Marine Warning	BUF		66 min
Jul 26, 7:42 PM EDT	Special Weather Statement	BUF	Jefferson	48 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.