Alert archive / New York / Special Weather Statements in 2021
Special Weather Statement, NWS Buffalo, NY
NWS Buffalo, NY issued this special weather statement at Aug 18, 2021, 4:21 PM EDT for Cattaraugus County, New York. It was in force for 54 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
- Aug 18, 2021, 4:21 PM EDT (20:21 UTC)
- Expired
- Aug 18, 2021, 5:15 PM EDT
- In force
- 54 min
- Issued by
- NWS Buffalo, NY
- Hail
- 0.00 in
- Wind
- 30
County Cattaraugus County, NY
The radar
The Buffalo radar (KBUF), 94 km from the middle of the area, began a volume at 20:20 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, 8.4 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.
- Mixed-layer CAPE
- 80 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 830 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
582 WWUS81 KBUF 182021 SPSBUF Special Weather Statement National Weather Service Buffalo NY 421 PM EDT Wed Aug 18 2021 NYZ019-020-182115- Chautauqua NY-Cattaraugus NY- 421 PM EDT Wed Aug 18 2021 ...A strong thunderstorm will impact portions of southwestern Cattaraugus and southeastern Chautauqua Counties through 515 PM EDT... At 420 PM EDT, Doppler radar was tracking a strong thunderstorm over Frewsburg, or 7 miles east of Jamestown, moving northwest at 10 mph. HAZARD...Torrential Rain. SOURCE...Radar indicated. IMPACT...May lead to localized flooding. Locations impacted include... Jamestown, Salamanca, Allegany State Park, Falconer, Frewsburg, Jamestown West, New Albion, Conewango, Ellington, Leon, Randolph, Napoli, Little Valley, Cattaraugus, East Randolph, Cherry Creek, Allegheny Reservoir, Onoville, Kennedy and Cattaraugus County Landfill. This includes Interstate 86 between exits 12 and 20. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive your vehicle through flooded roadways. && LAT...LON 4200 7929 4235 7920 4232 7874 4200 7875 TIME...MOT...LOC 2020Z 152DEG 9KT 4206 7910 MAX HAIL SIZE...0.00 IN MAX WIND GUST...30 MPH $$ HSK
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.