Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 102, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 13, 2021, 10:51 PM EDT for 4 counties in 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
- Aug 13, 2021, 10:51 PM EDT (02:51 UTC)
- Expired
- Aug 13, 2021, 11:30 PM EDT
- In force
- 39 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Allegany County, NY, Cattaraugus County, NY, Erie County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 52 km from the middle of the area, began a volume at 02:50 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, 2.9 hours before the alert went out and 49 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
- 179 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 1052 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
184 WUUS51 KBUF 140251 SVRBUF NYC003-009-029-121-140330- /O.NEW.KBUF.SV.W.0102.210814T0251Z-210814T0330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Buffalo NY 1051 PM EDT Fri Aug 13 2021 The National Weather Service in Buffalo has issued a * Severe Thunderstorm Warning for... Western Wyoming County in western New York... Northeastern Cattaraugus County in western New York... Southeastern Erie County in western New York... Northwestern Allegany County in western New York... * Until 1130 PM EDT. * At 1050 PM EDT, a severe thunderstorm was located near East Concord, or 17 miles south of East Aurora, moving east at 20 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. * Locations impacted include... Boston, Springville, Colden, Arcade, Houghton, Chaffee, East Concord, Varysburg, Ashford Hollow and Yorkshire. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4236 7867 4263 7876 4282 7827 4243 7807 TIME...MOT...LOC 0250Z 249DEG 19KT 4252 7859 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Mitchell
2 follow-up statements
405 WWUS51 KBUF 140312 SVSBUF Severe Weather Statement National Weather Service Buffalo NY 1112 PM EDT Fri Aug 13 2021 NYC003-009-029-121-140330- /O.CON.KBUF.SV.W.0102.000000T0000Z-210814T0330Z/ Wyoming NY-Cattaraugus NY-Erie NY-Allegany NY- 1112 PM EDT Fri Aug 13 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR WESTERN WYOMING...NORTHEASTERN CATTARAUGUS...SOUTHEASTERN ERIE AND NORTHWESTERN ALLEGANY COUNTIES... At 1112 PM EDT, a severe thunderstorm was located 7 miles southeast of Wales Center, or 11 miles southeast of East Aurora, moving northeast at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. Locations impacted include... Arcade, Houghton, Varysburg, Chaffee, Yorkshire, Holland, Sardinia, Sheldon, Eagle and Pike. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4238 7850 4267 7866 4282 7827 4243 7807 TIME...MOT...LOC 0312Z 246DEG 29KT 4269 7843 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Mitchell
988
WWUS51 KBUF 140330
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
1130 PM EDT Fri Aug 13 2021
NYC003-009-029-121-140339-
/O.EXP.KBUF.SV.W.0102.000000T0000Z-210814T0330Z/
Wyoming NY-Cattaraugus NY-Erie NY-Allegany NY-
1130 PM EDT Fri Aug 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN WYOMING...NORTHEASTERN
CATTARAUGUS...SOUTHEASTERN ERIE AND NORTHWESTERN ALLEGANY COUNTIES
WILL EXPIRE AT 1130 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
LAT...LON 4238 7850 4267 7866 4282 7827 4243 7807
TIME...MOT...LOC 0329Z 249DEG 19KT 4271 7837
$$
ThomasThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 8:35 PM EDT | Special Weather Statement | BUF | Chautauqua | 40 min |
| Aug 13, 9:14 PM EDT | Special Weather Statement | BUF | Chautauqua | 31 min |
| Aug 13, 9:45 PM EDT | Special Weather Statement | BUF | Chautauqua | 30 min |
| Aug 13, 11:04 PM EDT | Special Weather Statement | BUF | Oswego | 26 min |
| Aug 13, 11:12 PM EDT | Special Weather Statement | BUF | Cattaraugus | 48 min |
| Aug 13, 11:39 PM EDT | Special Weather Statement | BUF | Erie | 66 min |
| Aug 14, 12:05 AM EDT | Special Marine Warning | BUF | 55 min | |
| Aug 14, 11:46 AM EDT | Small Craft Advisory | BUF | 11 hr |
Nearby
Severe Thunderstorm Warnings in New York, 2021Every severe thunderstorm warning 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.