Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 1, 2021Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Jul 1, 2021, 7:45 AM EDT for Chautauqua County, New York. It was in force for 60 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: Jul 1, 2021, 7:45 AM EDT (11:45 UTC)
Expired: Jul 1, 2021, 8:45 AM EDT
In force: 60 min
Issued by: NWS Buffalo, NY

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 102 km from the middle of the area, began a volume at 11:45 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 00:00Z, 11.8 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-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: 31 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 976 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

969 
WWUS81 KBUF 011145
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
745 AM EDT Thu Jul 1 2021

NYZ019-020-011245-
Chautauqua-Cattaraugus-
745 AM EDT Thu Jul 1 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN CATTARAUGUS AND
SOUTHEASTERN CHAUTAUQUA COUNTIES...

At 745 AM EDT, a strong thunderstorm was located near Lakewood and 
moving east at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Jamestown, Salamanca, Allegany State Park, Lakewood, Falconer, Long
Point State Park, Jamestown West, Frewsburg, Busti, Gerry, Conewango,
Ellington, Randolph, Napoli, Little Valley, Celoron, East Randolph,
Sinclairville, Panama and Bemus Point.

This includes Interstate 86 between exits 8 and 20.
 
If outdoors, consider seeking shelter inside a building.

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 7933 4203 7955 4227 7938 4226 7869
      4200 7883
TIME...MOT...LOC 1145Z 274DEG 20KT 4216 7930 
$$

Reynolds

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 7:49 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	56 min
Jul 1, 3:24 PM EDT	Special Marine Warning	BUF		66 min
Jul 1, 4:11 PM EDT	Special Marine Warning	BUF		76 min
Jul 1, 6:10 PM EDT	Special Marine Warning	BUF		65 min

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.