Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

October 21, 2021Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Oct 21, 2021, 4:53 PM EDT for Chautauqua County, New York. It was in force for 37 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
Oct 21, 2021, 4:53 PM EDT (20:53 UTC)
Expired
Oct 21, 2021, 5:30 PM EDT
In force
37 min
Issued by
NWS Buffalo, NY
Hail
0.00 in
Wind
40

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 93 km from the middle of the area, began a volume at 20:56 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, 8.9 hours before the alert went out and 94 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, Buffalo Intl Airport, NY at 12:00Z on 2021-10-21Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2021-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.19395878Sfc1 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
902 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

863 
WWUS81 KBUF 212053
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
453 PM EDT Thu Oct 21 2021
 
NYZ019-212130-
Chautauqua NY-
453 PM EDT Thu Oct 21 2021

...A strong thunderstorm will impact portions of central Chautauqua
County through 530 PM EDT...

At 452 PM EDT, Doppler radar was tracking a strong thunderstorm near
Findley Lake, or 22 miles east of Erie, moving northeast at 45 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Dunkirk, Fredonia, Westfield, Mayville, Lake Erie State Park, SUNY
Fredonia, Chautauqua Institution, Chautauqua, Portland, Ripley,
Stockton, Brocton, Mina, Arkwright, Sherman, Cassadaga, Hamlet,
Barcelona, Dewittville and Stedman Corners.

This includes the following highways...
 Interstate 90 between exits 60 and 59.
 Interstate 86 between exits 6 and 7.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4222 7976 4242 7954 4245 7949 4249 7945
      4253 7939 4254 7933 4238 7911 4205 7964
      4215 7976
TIME...MOT...LOC 2052Z 224DEG 41KT 4217 7966 

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

$$

HSK

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 21, 4:42 AM EDTSmall Craft AdvisoryBUF33 hr
Oct 21, 5:09 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua33 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.