Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

June 9, 2021Cattaraugus County, New York

NWS Buffalo, NY issued this special weather statement at Jun 9, 2021, 3:09 PM EDT for Cattaraugus County, New York. It was in force for 66 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
Jun 9, 2021, 3:09 PM EDT (19:09 UTC)
Expired
Jun 9, 2021, 4:15 PM EDT
In force
66 min
Issued by
NWS Buffalo, NY

County Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 95 km from the middle of the area, began a volume at 19:09 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, 7.2 hours before the alert went out and 93 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.

044 
WWUS81 KBUF 091909
SPSBUF

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

NYZ020-092015-
Cattaraugus-
309 PM EDT Wed Jun 9 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN CATTARAUGUS
COUNTY...

At 308 PM EDT, a strong thunderstorm was located near Salamanca,
moving southwest at 10 mph.

Wind gusts up to 50 mph and half inch hail are possible with this
storm.

Locations impacted include...
Salamanca, Allegany State Park, Great Valley, Carrollton, Humphrey,
Ellicottville, Vandalia, Allegheny Reservoir, Onoville, Limestone and
Kill Buck.

This includes Interstate 86 between exits 18 and 23.
 
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.

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 4200 7903 4230 7863 4218 7845 4200 7862
TIME...MOT...LOC 1908Z 042DEG 11KT 4219 7861 
$$

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, 2:33 PM EDTSpecial Weather StatementBUFAllegany27 min
Jun 9, 2:50 PM EDTSevere Thunderstorm WarningBUFAllegany25 min
Jun 9, 3:02 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus43 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.