Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 2, 20214 counties in New York

NWS Buffalo, NY issued this special weather statement at Jul 2, 2021, 1:36 PM EDT for 4 counties in New York. It was in force for 114 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, 1:36 PM EDT (17:36 UTC)
Expired: Jul 2, 2021, 3:30 PM EDT
In force: 114 min
Issued by: NWS Buffalo, NY

Counties Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY

The radar

The Buffalo radar (KBUF), 55 km from the middle of the area, began a volume at 17:36 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, 5.6 hours before the alert went out and 53 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.

837 
WWUS81 KBUF 021736
SPSBUF

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

NYZ010-012-013-019>021-085-021930-
Chautauqua-Cattaraugus-Allegany-Livingston-Southern
Erie-Wyoming-Northern Erie-
136 PM EDT Fri Jul 2 2021


...SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS ERIE, 
WYOMING, CHAUTAUQUA, Cattaraugus, AND ALLEGANY COUNTIES...

Slow moving thunderstorms will be possible across the Southern Tier, 
Wyoming, and Erie Counties through this evening. These storms will 
produce very heavy rainfall with possible poor drainage flooding. 
Additionally, any stronger storms may produce pea sized hail.

If traveling this morning, 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 4200 7976 4227 7976 4241 7945 4249 7935
      4255 7915 4269 7905 4278 7885 4282 7886
      4281 7825 4253 7827 4255 7766 4253 7772
      4200 7775
$$

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, 2:20 PM EDT	Special Weather Statement	BUF	Niagara, Orleans	115 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.