Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

August 29, 2021Ontario County, New York

NWS Buffalo, NY issued this special weather statement at Aug 29, 2021, 5:29 PM EDT for Ontario 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 29, 2021, 5:29 PM EDT (21:29 UTC)
Expired: Aug 29, 2021, 6:00 PM EDT
In force: 31 min
Issued by: NWS Buffalo, NY
Hail: 0.00 in
Wind: 40

County Ontario County, NY

The radar

The Buffalo radar (KBUF), 116 km from the middle of the area, began a volume at 21:34 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, 9.5 hours before the alert went out and 112 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: 580 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 993 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

171 
WWUS81 KBUF 292129
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
529 PM EDT Sun Aug 29 2021
 
NYZ013-014-292200-
Ontario NY-Livingston NY-
529 PM EDT Sun Aug 29 2021

...A strong thunderstorm will impact portions of south central
Ontario County through 600 PM EDT...

At 526 PM EDT, Doppler radar was tracking a strong thunderstorm over
Naples, or 15 miles east of Dansville, moving east at 5 mph.

HAZARD...Heavy rainfall and wind gusts up to 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Naples, Rushville and Hunt Hollow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is occurring with this storm and may lead to 
localized flooding. Do not drive your vehicle through flooded 
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4264 7753 4279 7720 4276 7719 4276 7726
      4272 7734 4267 7736 4267 7737 4258 7737
      4258 7749
TIME...MOT...LOC 2126Z 249DEG 6KT 4259 7739 

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

$$

Mitchell

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 9:06 PM EDT	Special Weather Statement	BUF	Livingston	54 min
Aug 29, 12:04 AM EDT	Special Weather Statement	BUF	Jefferson	56 min
Aug 29, 1:02 AM EDT	Special Weather Statement	BUF	Jefferson, Lewis	58 min
Aug 29, 2:04 AM EDT	Special Weather Statement	BUF	Jefferson	3 hr
Aug 29, 12:03 PM EDT	Special Marine Warning	BUF		57 min
Aug 29, 12:07 PM EDT	Special Weather Statement	BUF	Niagara	53 min
Aug 29, 12:24 PM EDT	Special Weather Statement	BUF	Chautauqua	66 min
Aug 29, 12:47 PM EDT	Flash Flood Warning	BUF	Niagara	3 hr
Aug 29, 1:55 PM EDT	Special Weather Statement	BUF	Seneca	35 min
Aug 29, 2:04 PM EDT	Special Weather Statement	BUF	Ontario	41 min
Aug 29, 2:11 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wayne	64 min
Aug 29, 2:30 PM EDT	Special Weather Statement	BUF	Ontario, Wayne	60 min
Aug 29, 3:25 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	20 min
Aug 29, 3:38 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	10 min
Aug 29, 3:57 PM EDT	Special Marine Warning	BUF		62 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.