Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 2, 2021Niagara County, Orleans County, New York

NWS Buffalo, NY issued this special weather statement at Jul 2, 2021, 2:20 PM EDT for Niagara County, Orleans County, New York. It was in force for 115 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 2, 2021, 2:20 PM EDT (18:20 UTC)
Expired: Jul 2, 2021, 4:15 PM EDT
In force: 115 min
Issued by: NWS Buffalo, NY

Counties Niagara County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 18 km from the middle of the area, began a volume at 18:24 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 12:00Z, 6.3 hours before the alert went out and 22 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: 348 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 782 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

569 
WWUS81 KBUF 021820
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
220 PM EDT Fri Jul 2 2021

NYZ001-002-010>012-022015-
Wyoming-Orleans-Genesee-Niagara-Northern Erie-
220 PM EDT Fri Jul 2 2021

...SLOW MOVING THUNDERSTORMS POSSIBLE WITH VERY HEAVY RAINFALL 
FOR NORTHERN ERIE, NIAGARA, ORLEANS AND WESTERN GENESEE COUNTIES...

Slow moving thunderstorms will be possible across the Niagara 
Frontier late this afternoon and evening. These storms will produce 
very heavy rainfall, frequent lightning and possible poor drainage 
flooding. Additionally, any stronger storms may produce pea sized 
hail.

If traveling this afternoon and evening, be prepared for reduced 
visibility due to heavy rainfall, and allow yourself extra time to 
reach your destination. Do not drive your vehicle into areas where 
water covers the roadway.

LAT...LON 4340 7864 4342 7817 4279 7822 4280 7892
      4284 7893 4289 7891 4293 7891 4296 7893
      4296 7896 4299 7901 4302 7902 4306 7900
      4308 7908 4311 7906 4312 7907 4315 7904
      4325 7906 4330 7909
$$

Reynolds

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 8:15 PM EDT	Special Weather Statement	BUF	Livingston	30 min
Jul 1, 8:45 PM EDT	Special Weather Statement	BUF	Niagara	30 min
Jul 1, 9:50 PM EDT	Special Weather Statement	BUF	Genesee, Orleans	40 min
Jul 1, 10:28 PM EDT	Flash Flood Warning	BUF	Genesee	93 min
Jul 2, 8:44 AM EDT	Special Weather Statement	BUF	Jefferson, Lewis, Oswego	2 hr
Jul 2, 10:00 AM EDT	Special Weather Statement	BUF	Chautauqua	90 min
Jul 2, 10:31 AM EDT	Special Weather Statement	BUF	Erie	44 min
Jul 2, 11:12 AM EDT	Special Weather Statement	BUF	Wayne	2 hr
Jul 2, 11:27 AM EDT	Special Weather Statement	BUF	Cattaraugus, Chautauqua, Erie	2 hr
Jul 2, 12:38 PM EDT	Special Weather Statement	BUF	Genesee, Livingston, Monroe, Orleans, Wyoming	112 min
Jul 2, 1:16 PM EDT	Special Marine Warning	BUF		44 min
Jul 2, 1:36 PM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Chautauqua, Erie	114 min
Jul 2, 2:26 PM EDT	Special Marine Warning	BUF		34 min
Jul 2, 5:02 PM EDT	Special Weather Statement	BUF	Allegany	58 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.