Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 15, 2021Erie County, New York

NWS Buffalo, NY issued this special weather statement at Jul 15, 2021, 8:06 PM EDT for Erie County, New York. It was in force for 24 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 15, 2021, 8:06 PM EDT (00:06 UTC)
Expired
Jul 15, 2021, 8:30 PM EDT
In force
24 min
Issued by
NWS Buffalo, NY

County Erie County, NY

The radar

The Buffalo radar (KBUF), 7 km from the middle of the area, began a volume at 00:09 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 00:00Z, 0.1 hours before the alert went out and 4 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 00:00Z on 2021-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 572 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 00:00Z on 2021-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.193958Sfc1 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
572 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1363 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted.

282 
WWUS81 KBUF 160006
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
806 PM EDT Thu Jul 15 2021

NYZ010>012-160030-
Wyoming-Genesee-Northern Erie-
806 PM EDT Thu Jul 15 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN WYOMING...
NORTHEASTERN ERIE AND SOUTHWESTERN GENESEE COUNTIES...

At 806 PM EDT, a strong thunderstorm was located over West Seneca,
moving east at 30 mph.

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

Locations impacted include...
Buffalo, Cheektowaga, West Seneca, Clarence, Lackawanna, Depew,
Lancaster, Williamsville, Darien Lakes State Park, Elma, Marilla,
Pembroke, Bennington, Akron, Small Boat Harbor, Erie Basin Marina,
Alden, Blasdell, Elma Center and Billington Heights.

This includes Interstate 90 between exits 55 and 48A.
 
LAT...LON 4293 7891 4304 7839 4278 7832 4280 7887
TIME...MOT...LOC 0006Z 259DEG 27KT 4286 7880 
$$

Mitchell

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 8:12 PM EDTSpecial Weather StatementBUFChautauqua63 min
Jul 15, 8:18 PM EDTSevere Thunderstorm WarningBUFChautauqua57 min
Jul 15, 9:21 PM EDTSpecial Weather StatementBUFCattaraugus54 min
Jul 15, 10:48 PM EDTSpecial Marine WarningBUF57 min
Jul 15, 11:09 PM EDTSpecial Weather StatementBUFJefferson36 min
Jul 16, 2:13 PM EDTFlash Flood WarningBUFChautauqua5 hr
Jul 16, 2:41 PM EDTFlash Flood WatchBUFAllegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 8 more32 hr
Jul 16, 2:59 PM EDTFlash Flood WarningBUFCattaraugus, Chautauqua4 hr
Jul 16, 4:45 PM EDTSmall Craft AdvisoryBUF44 hr
Jul 16, 4:49 PM EDTAreal Flood WarningBUFChautauqua6 hr
Jul 16, 7:14 PM EDTAreal Flood WarningBUFChautauqua6 hr

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.