Alert archive / New York / Special Weather Statements in 2018

Special Weather Statement, NWS Buffalo, NY

July 25, 2018Cattaraugus County, Genesee County, Wyoming County, New York

NWS Buffalo, NY issued this special weather statement at Jul 25, 2018, 2:07 AM EDT for Cattaraugus County, Genesee County, Wyoming County, New York. It was in force for 38 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, 2018, 2:07 AM EDT (06:07 UTC)
Expired
Jul 25, 2018, 2:45 AM EDT
In force
38 min
Issued by
NWS Buffalo, NY

Counties Cattaraugus County, NY, Genesee County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 43 km from the middle of the area, began a volume at 06:10 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, 6.1 hours before the alert went out and 39 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 2018-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 599 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 00:00Z on 2018-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
599 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1024 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted.

731 
WWUS81 KBUF 250607
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
207 AM EDT WED JUL 25 2018

NYZ010>012-020-021-085-250645-
Cattaraugus-Allegany-Southern Erie-Wyoming-Genesee-Northern Erie-
207 AM EDT WED JUL 25 2018

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT 
WYOMING...NORTHEASTERN CATTARAUGUS...EASTERN ERIE...NORTHWESTERN 
ALLEGANY AND GENESEE COUNTIES...

At 204 AM EDT, radar indicated a north to south oriented line of 
heavy showers and thunderstorms extending from near Wales Center to 
6 miles south of Franklinville. While the individual storms within 
the line are moving northeast at about 35 mph...the line itself is 
only moving east at about 15 mph. This will encourage storms to 
train over the same area for a prolonged period...producing rainfall 
amounts that could very easily exceed one inch in an hours time. 

Locations impacted include...
Batavia, Darien Lakes State Park, Marilla, Pembroke, Warsaw,
Bennington, Akron, Alden, Attica and Byron.

This includes the following highways...
 Interstate 90 between exits 48A and 48.
 Interstate 86 near exit 28.

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

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

LAT...LON 4309 7803 4222 7822 4221 7867 4306 7855
TIME...MOT...LOC 0604Z 201DEG 43KT 4274 7843 4224 7845 

$$

RSH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 8:42 PM EDTFlash Flood WarningBUFChautauqua2 hr
Jul 24, 11:54 PM EDTSpecial Weather StatementBUFChautauqua66 min

Nearby

Special Weather Statements in New York, 2018Every special weather statement in 2018

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.