Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

October 15, 2021Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Oct 15, 2021, 5:37 PM EDT for Chautauqua County, New York. It was in force for 23 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 15, 2021, 5:37 PM EDT (21:37 UTC)
Expired
Oct 15, 2021, 6:00 PM EDT
In force
23 min
Issued by
NWS Buffalo, NY
Hail
0.25 in
Wind
40

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 100 km from the middle of the area, began a volume at 21:36 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, 9.6 hours before the alert went out and 101 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 2021-10-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2021-10-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
-28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

377 
WWUS81 KBUF 152137
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
537 PM EDT Fri Oct 15 2021
 
NYZ019-152200-
Chautauqua NY-
537 PM EDT Fri Oct 15 2021

...A strong thunderstorm will impact portions of northwestern
Chautauqua County through 600 PM EDT...

At 536 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles east of North East, or 21 miles northeast of Erie, moving
northeast at 25 mph.

HAZARD...Torrential rainfall, winds in excess of 40 mph and pea size 
         hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Westfield, Mayville, Lake Erie State Park, Portland, Ripley,
Stockton, Brocton, Mina, Sherman, Cassadaga, Ripley Beach, Barcelona
and Dewittville.

This includes Interstate 90 between exits 61 and 60.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also 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 4244 7950 4248 7946 4231 7928 4212 7970
      4218 7977 4227 7976 4228 7973 4231 7977
TIME...MOT...LOC 2136Z 232DEG 23KT 4225 7970 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

Mitchell

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 15, 1:27 PM EDTSmall Craft AdvisoryBUF5 days
Oct 15, 4:51 PM EDTSpecial Marine WarningBUF39 min
Oct 15, 5:28 PM EDTSpecial Weather StatementBUFErie47 min
Oct 15, 5:53 PM EDTSevere Thunderstorm WarningBUFChautauqua22 min
Oct 15, 6:04 PM EDTTornado WarningBUFChautauqua26 min
Oct 15, 6:15 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Livingston, Monroe, Wyoming45 min
Oct 15, 6:30 PM EDTSevere Thunderstorm WarningBUFChautauqua30 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.