Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 25, 2021Erie County, New York

NWS Buffalo, NY issued this special weather statement at Jul 25, 2021, 1:36 AM EDT for Erie County, New York. It was in force for 39 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 25, 2021, 1:36 AM EDT (05:36 UTC)
Expired
Jul 25, 2021, 2:15 AM EDT
In force
39 min
Issued by
NWS Buffalo, NY

County Erie County, NY

The radar

The Buffalo radar (KBUF), 36 km from the middle of the area, began a volume at 05:36 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 00:00Z, 5.6 hours before the alert went out and 36 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 2021-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2021-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
7 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
1068 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
170 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

375 
WWUS81 KBUF 250536
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
136 AM EDT Sun Jul 25 2021

NYZ010-019-085-250615-
Chautauqua-Southern Erie-Northern Erie-
136 AM EDT Sun Jul 25 2021

...A THUNDERSTORM WILL AFFECT ERIE AND NORTHEASTERN CHAUTAUQUA 
COUNTIES...

At 134 AM EDT, a thunderstorm was located 10 miles west of Hamburg, 
moving east at 50 mph.

Winds in excess of 35 mph are possible with this storm, along with 
brief very heavy downpours.

Locations impacted include...
Buffalo, West Seneca, Lackawanna, Depew, Hamburg, East Aurora, 
Evans, Elma, Boston, Eden, Colden, Orchard Park, Silver Creek, 
Blasdell, Angola, and North Collins.

This includes Interstate 90 between exits 58 and 52.
 
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4251 7931 4259 7919 4267 7912 4272 7909
      4276 7898 4280 7892 4287 7892 4288 7889
      4293 7869 4275 7847 4254 7855 4252 7899
      4253 7900 4254 7904
TIME...MOT...LOC 0534Z 270DEG 41KT 4270 7903 
$$

Hitchcock

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.