Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 2, 2021Jefferson County, Lewis County, Oswego County, New York

NWS Buffalo, NY issued this special weather statement at Jul 2, 2021, 8:44 AM EDT for Jefferson County, Lewis County, Oswego County, New York. It was in force for 2 hr. 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 2, 2021, 8:44 AM EDT (12:44 UTC)
Expired
Jul 2, 2021, 10:45 AM EDT
In force
2 hr
Issued by
NWS Buffalo, NY

Counties Jefferson County, NY, Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 29 km from the middle of the area, began a volume at 12:48 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, 0.7 hours before the alert went out and 218 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, Albany, NY at 12:00Z on 2021-07-02Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2021-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939587897117Sfc1 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
721 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

378 
WWUS81 KBUF 021244
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
844 AM EDT Fri Jul 2 2021

NYZ006>008-021445-
Jefferson-Oswego-Lewis-
844 AM EDT Fri Jul 2 2021

...SLOW MOVING STORMS WITH HEAVY RAINFALL ACROSS LEWIS...JEFFERSON 
AND OSWEGO COUNTIES...

A large area of slow moving showers and thunderstorms will persist 
across the Tug Hill and Black River Valley this morning. These 
storms will spread west into Mexico and Fulton through 9 am and 
Oswego around 10 am. These storms will produce heavy rainfall with 
amounts of one to two inches will be possible over the next few 
hours. This will result in ponding of water on roadways and in low 
lying areas. 

If traveling this morning, be prepared for reduced visibility due to 
heavy rainfall, and allow yourself extra time to reach your 
destination. 

LAT...LON 4440 7585 4410 7517 4361 7511 4342 7553
      4348 7581 4315 7588 4327 7620 4326 7656
      4346 7653 4365 7615 4389 7645 4385 7620
      4398 7605 4396 7616 4396 7617 4403 7612
      4407 7614 4396 7628 4410 7637 4429 7614
$$

Kelly

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 8:15 PM EDTSpecial Weather StatementBUFLivingston30 min
Jul 1, 8:45 PM EDTSpecial Weather StatementBUFNiagara30 min
Jul 1, 9:50 PM EDTSpecial Weather StatementBUFGenesee, Orleans40 min
Jul 1, 10:28 PM EDTFlash Flood WarningBUFGenesee93 min
Jul 2, 10:00 AM EDTSpecial Weather StatementBUFChautauqua90 min
Jul 2, 10:31 AM EDTSpecial Weather StatementBUFErie44 min
Jul 2, 11:12 AM EDTSpecial Weather StatementBUFWayne2 hr
Jul 2, 11:27 AM EDTSpecial Weather StatementBUFCattaraugus, Chautauqua, Erie2 hr
Jul 2, 12:38 PM EDTSpecial Weather StatementBUFGenesee, Livingston, Monroe, Orleans, Wyoming112 min
Jul 2, 1:16 PM EDTSpecial Marine WarningBUF44 min
Jul 2, 1:36 PM EDTSpecial Weather StatementBUFAllegany, Cattaraugus, Chautauqua, Erie114 min
Jul 2, 2:20 PM EDTSpecial Weather StatementBUFNiagara, Orleans115 min
Jul 2, 2:26 PM EDTSpecial Marine WarningBUF34 min
Jul 2, 5:02 PM EDTSpecial Weather StatementBUFAllegany58 min

Nearby

Special Weather Statements in New York, 2021Every 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.