Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

August 12, 2021Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Aug 12, 2021, 8:01 AM EDT for Chautauqua County, New York. It was in force for 74 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 12, 2021, 8:01 AM EDT (12:01 UTC)
Expired: Aug 12, 2021, 9:15 AM EDT
In force: 74 min
Issued by: NWS Buffalo, NY
Hail: 0.00 in
Wind: 50

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 106 km from the middle of the area, began a volume at 12:04 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, 0.0 hours before the alert went out and 107 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: 390 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 843 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

306 
WWUS81 KBUF 121201
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
801 AM EDT Thu Aug 12 2021
 
NYZ019-121315-
Chautauqua NY-
801 AM EDT Thu Aug 12 2021

...A line of strong thunderstorms will impact southern portions of 
Chautauqua County through 915 AM EDT...

At 800 AM EDT, Doppler radar was tracking a strong thunderstorm near
Erie, moving east at 45 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Jamestown, Lakewood, Falconer, Mayville, Clymer, Long Point State
Park, Jamestown West, Chautauqua Institution, Findley Lake,
Frewsburg, Chautauqua, Busti, Ripley, Gerry, Ellington, Celoron,
Mina, French Creek, Sherman and Sinclairville.

This includes the following highways...
 Interstate 90 near exit 61.
 Interstate 86 between exits 4 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

If on or near Chautauqua Lake, get out of the water and move indoors 
or inside a vehicle. Remember, lightning can strike out to 10 miles 
from the parent thunderstorm. If you can hear thunder, you are close 
enough to be struck by lightning. Move to safe shelter now! Do not 
be caught on the water in a thunderstorm.

&&

LAT...LON 4227 7976 4229 7973 4229 7907 4200 7906
      4200 7976
TIME...MOT...LOC 1200Z 274DEG 39KT 4206 8005 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

$$

Apffel

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 10:12 PM EDT	Small Craft Advisory	BUF		16 hr
Aug 11, 10:15 PM EDT	Heat Advisory	BUF	Cayuga, Erie, Genesee, Jefferson, Livingston, Monroe and 6 more	21 hr

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.