Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 94, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 1, 2021, 12:42 PM EDT for Allegany 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
- Aug 1, 2021, 12:42 PM EDT (16:42 UTC)
- Expired
- Aug 1, 2021, 1:30 PM EDT
- In force
- 48 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Allegany County, NY
The radar
The Buffalo radar (KBUF), 113 km from the middle of the area, began a volume at 16:42 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, 4.7 hours before the alert went out and 109 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
- 266 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
734 WUUS51 KBUF 011642 SVRBUF NYC003-011730- /O.NEW.KBUF.SV.W.0094.210801T1642Z-210801T1730Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Buffalo NY 1242 PM EDT Sun Aug 1 2021 The National Weather Service in Buffalo has issued a * Severe Thunderstorm Warning for... Southern Allegany County in western New York... * Until 130 PM EDT.. * At 1242 PM EDT, a severe thunderstorm was located 7 miles southwest of Wellsville, moving east at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. * Locations impacted include... Wellsville, Whitesville, Bolivar, Andover, Alma, Richburg, Stannards, Paynesville, and Little Genesee. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail and damaging winds and continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4200 7830 4211 7831 4219 7774 4200 7775 TIME...MOT...LOC 1642Z 261DEG 27KT 4204 7804 HAIL...0.75IN WIND...60MPH $$ Hitchcock
2 follow-up statements
471 WWUS51 KBUF 011657 SVSBUF Severe Weather Statement National Weather Service Buffalo NY 1257 PM EDT Sun Aug 1 2021 NYC003-011730- /O.CON.KBUF.SV.W.0094.000000T0000Z-210801T1730Z/ Allegany NY- 1257 PM EDT Sun Aug 1 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM EDT FOR SOUTHERN ALLEGANY COUNTY... At 1256 PM EDT, a severe thunderstorm was located near Whitesville, or 7 miles southeast of Wellsville, moving east at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. Locations impacted include... Wellsville, Whitesville, Bolivar, Andover, Alma, Richburg, Stannards, Paynesville, and Little Genesee. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4200 7830 4211 7831 4219 7774 4200 7775 TIME...MOT...LOC 1656Z 261DEG 29KT 4205 7784 HAIL...0.75IN WIND...60MPH $$ Hitchcock
108
WWUS51 KBUF 011723
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
123 PM EDT Sun Aug 1 2021
NYC003-011733-
/O.EXP.KBUF.SV.W.0094.000000T0000Z-210801T1730Z/
Allegany NY-
123 PM EDT Sun Aug 1 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ALLEGANY COUNTY WILL
EXPIRE AT 130 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Buffalo.
LAT...LON 4200 7830 4211 7831 4219 7774 4200 7775
TIME...MOT...LOC 1723Z 261DEG 27KT 4208 7761
$$
HitchcockThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 7:30 AM EDT | Special Weather Statement | BUF | Erie | 45 min |
| Aug 1, 9:55 AM EDT | Special Weather Statement | BUF | Livingston | 35 min |
| Aug 1, 10:08 AM EDT | Special Weather Statement | BUF | Chautauqua | 37 min |
| Aug 1, 10:11 AM EDT | Special Weather Statement | BUF | Wyoming | 34 min |
| Aug 1, 10:44 AM EDT | Special Weather Statement | BUF | Chautauqua | 46 min |
| Aug 1, 10:47 AM EDT | Special Weather Statement | BUF | Allegany | 43 min |
| Aug 1, 11:14 AM EDT | Special Weather Statement | BUF | Lewis | 46 min |
| Aug 1, 11:33 AM EDT | Special Weather Statement | BUF | Cattaraugus | 42 min |
| Aug 1, 12:07 PM EDT | Special Marine Warning | BUF | 83 min | |
| Aug 1, 12:18 PM EDT | Special Weather Statement | BUF | Allegany | 42 min |
| Aug 1, 1:38 PM EDT | Special Weather Statement | BUF | Allegany | 82 min |
| Aug 1, 3:24 PM EDT | Special Weather Statement | BUF | Jefferson | 81 min |
| Aug 1, 5:14 PM EDT | Special Weather Statement | BUF | Ontario | 46 min |
| Aug 1, 5:34 PM EDT | Special Marine Warning | BUF | 116 min | |
| Aug 1, 6:20 PM EDT | Special Marine Warning | BUF | 85 min |
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.