Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

June 9, 2021Allegany County, New York

NWS Buffalo, NY issued this special weather statement at Jun 9, 2021, 2:33 PM EDT for Allegany County, New York. It was in force for 27 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 9, 2021, 2:33 PM EDT (18:33 UTC)
Expired
Jun 9, 2021, 3:00 PM EDT
In force
27 min
Issued by
NWS Buffalo, NY

County Allegany County, NY

The radar

The Buffalo radar (KBUF), 117 km from the middle of the area, began a volume at 18:36 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.

What was reported inside it

TimeReportWhereRemark
Jun 9, 2:40 PM EDTTSTM WND DMG3 Ssw Wellsville, NYMULTIPLE TREES DOWN IN TROUT RUN CAMP RESORT. TIME ESTIMATED BY RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.6 hours before the alert went out and 113 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 2021-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 68 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.1939Sfc1 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
68 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
905 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

745 
WWUS81 KBUF 091833
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
233 PM EDT Wed Jun 9 2021

NYZ021-091900-
Allegany-
233 PM EDT Wed Jun 9 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL ALLEGANY COUNTY...

At 233 PM EDT, a strong thunderstorm was located near Wellsville,
moving southwest at 15 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Wellsville, Alma, Stannards and Knight Creek. 

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4200 7824 4215 7798 4203 7784 4200 7787
TIME...MOT...LOC 1833Z 046DEG 15KT 4204 7797 
$$

Mitchell

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 1:28 PM EDTSpecial Weather StatementBUFCattaraugus92 min
Jun 9, 2:50 PM EDTSevere Thunderstorm WarningBUFAllegany25 min
Jun 9, 3:02 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus43 min
Jun 9, 3:09 PM EDTSpecial Weather StatementBUFCattaraugus66 min
Jun 9, 3:18 PM EDTSevere Thunderstorm WarningBUFCattaraugus57 min
Jun 9, 3:32 PM EDTFlash Flood WarningBUFAllegany3 hr
Jun 9, 4:00 PM EDTFlash Flood WarningBUFCattaraugus3 hr
Jun 9, 4:14 PM EDTSevere Thunderstorm WarningBUFAllegany61 min
Jun 9, 4:35 PM EDTSpecial Weather StatementBUFChautauqua40 min
Jun 9, 5:04 PM EDTFlash Flood WarningBUFChautauqua3 hr
Jun 9, 5:13 PM EDTSevere Thunderstorm WarningBUFChautauqua47 min
Jun 9, 5:41 PM EDTSpecial Weather StatementBUFCattaraugus64 min
Jun 9, 5:56 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua33 min
Jun 9, 6:22 PM EDTFlash Flood WarningBUFCattaraugus116 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.