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, 4:42 AM EDT for Chautauqua County, New York. It was in force for 48 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, 4:42 AM EDT (08:42 UTC)
- Expired
- Jul 17, 2021, 5:30 AM EDT
- In force
- 48 min
- Issued by
- NWS Buffalo, NY
County Chautauqua County, NY
The radar
The Buffalo radar (KBUF), 98 km from the middle of the area, began a volume at 08:45 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, 8.7 hours before the alert went out and 97 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.
262
WWUS81 KBUF 170842
SPSBUF
Special Weather Statement
National Weather Service Buffalo NY
442 AM EDT Sat Jul 17 2021
NYZ019-020-170930-
Chautauqua-Cattaraugus-
442 AM EDT Sat Jul 17 2021
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN CATTARAUGUS AND
CHAUTAUQUA COUNTIES...
At 442 AM EDT, a strong thunderstorm was located near Clymer, or 17
miles west of Jamestown, moving northeast at 50 mph.
Wind gusts up to 50 mph are possible with this storm.
Locations impacted include...
Jamestown, Allegany State Park, Lakewood, Falconer, Mayville, Clymer,
Long Point State Park, Jamestown West, Chautauqua Institution,
Findley Lake, Frewsburg, Chautauqua, Busti, Stockton, Gerry,
Conewango, Ellington, Leon, Randolph and Celoron.
This includes Interstate 86 between exits 4 and 18.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4245 7906 4207 7881 4200 7906 4200 7965
4212 7976 4215 7976
TIME...MOT...LOC 0842Z 243DEG 42KT 4203 7956
$$
ApffelThe 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, 6:12 AM EDT | Areal Flood Warning | BUF | Erie, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more | 13 hr |
| Jul 17, 7:39 AM EDT | Special Weather Statement | BUF | Chautauqua | 36 min |
| 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.