Alert archive / New York / Special Weather Statements in 2021
Special Weather Statement, NWS Buffalo, NY
NWS Buffalo, NY issued this special weather statement at Jul 17, 2021, 7:39 AM EDT for Chautauqua County, New York. It was in force for 36 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 17, 2021, 7:39 AM EDT (11:39 UTC)
- Expired
- Jul 17, 2021, 8:15 AM EDT
- In force
- 36 min
- Issued by
- NWS Buffalo, NY
County Chautauqua County, NY
The radar
The Buffalo radar (KBUF), 100 km from the middle of the area, began a volume at 11:44 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, 11.7 hours before the alert went out and 99 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
783 WWUS81 KBUF 171139 SPSBUF Special Weather Statement National Weather Service Buffalo NY 739 AM EDT Sat Jul 17 2021 NYZ019-020-171215- Chautauqua-Cattaraugus- 739 AM EDT Sat Jul 17 2021 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN CATTARAUGUS AND SOUTHEASTERN CHAUTAUQUA COUNTIES... At 737 AM EDT, a strong thunderstorm was located over Falconer, or near Jamestown, moving northeast at 35 mph. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Winds in excess of 40 mph are possible with this storm. Locations impacted include... Jamestown, Allegany State Park, Lakewood, Falconer, Jamestown West, Frewsburg, Busti, Gerry, Conewango, Ellington, Randolph, Celoron, East Randolph, Sinclairville, Cherry Creek, Bemus Point, Hamlet, Allegheny Reservoir, Onoville and Stow. This includes Interstate 86 between exits 9 and 17. Do not drive your vehicle through flooded roadways. LAT...LON 4200 7923 4213 7943 4242 7912 4200 7881 TIME...MOT...LOC 1137Z 227DEG 31KT 4213 7919 $$ HSK
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 4:15 AM EDT | Beach Hazards Statement | BUF | Chautauqua, Monroe, Niagara, Orleans, Wayne | 32 hr |
| Jul 17, 4:42 AM EDT | Special Weather Statement | BUF | Chautauqua | 48 min |
| Jul 17, 6:12 AM EDT | Areal Flood Warning | BUF | Erie, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more | 13 hr |
| Jul 17, 7:59 AM EDT | Flash Flood Warning | BUF | Chautauqua | 3 hr |
| Jul 17, 9:11 AM EDT | Areal Flood Warning | BUF | Chautauqua | 3 hr |
| Jul 17, 1:48 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 42 min |
| Jul 17, 2:10 PM EDT | Areal Flood Warning | BUF | Monroe | 40 hr |
| Jul 17, 3:15 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Erie | 6 hr |
| Jul 17, 3:15 PM EDT | Tornado Warning | BUF | Cattaraugus, Erie | 30 min |
| Jul 17, 3:46 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Erie, Wyoming | 44 min |
| Jul 17, 4:30 PM EDT | Special Weather Statement | BUF | Livingston | 45 min |
| Jul 17, 4:35 PM EDT | River Flood Warning | BUF | Cattaraugus, Chautauqua, Erie, Wyoming | 10 hr |
| Jul 17, 5:15 PM EDT | Areal Flood Warning | BUF | Livingston, Ontario | 3 hr |
| Jul 17, 5:28 PM EDT | Areal Flood Warning | BUF | Allegany, Cattaraugus | 5 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.