Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 9, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jun 9, 2021, 2:50 PM EDT for Allegany County, New York. It was in force for 25 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
- Jun 9, 2021, 2:50 PM EDT (18:50 UTC)
- Expired
- Jun 9, 2021, 3:15 PM EDT
- In force
- 25 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 18:50 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 12:00Z, 6.8 hours before the alert went out and 110 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
- 68 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 905 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
394 WUUS51 KBUF 091850 SVRBUF NYC003-091915- /O.NEW.KBUF.SV.W.0009.210609T1850Z-210609T1915Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Buffalo NY 250 PM EDT Wed Jun 9 2021 The National Weather Service in Buffalo has issued a * Severe Thunderstorm Warning for... Southwestern Allegany County in western New York... * Until 315 PM EDT.. * At 250 PM EDT, a severe thunderstorm was located 7 miles northeast of Shinglehouse, or 9 miles southwest of Wellsville, moving southwest at 15 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Emergency management. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Bolivar, Alma, Little Genesee and Ceres. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. This storm may cause serious injury and significant property damage. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4200 7831 4212 7806 4200 7792 TIME...MOT...LOC 1850Z 063DEG 13KT 4202 7807 HAIL...0.75IN WIND...60MPH $$ Mitchell
1 follow-up statement
797 WWUS51 KBUF 091909 SVSBUF Severe Weather Statement National Weather Service Buffalo NY 309 PM EDT Wed Jun 9 2021 NYC003-091915- /O.CON.KBUF.SV.W.0009.000000T0000Z-210609T1915Z/ Allegany NY- 309 PM EDT Wed Jun 9 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT FOR SOUTHWESTERN ALLEGANY COUNTY... At 307 PM EDT, a severe thunderstorm was located over Shinglehouse, or 13 miles southwest of Wellsville, moving southwest at 15 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Emergency management. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Bolivar, Alma, Little Genesee and Ceres. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. This storm may cause serious injury and significant property damage. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. An additional severe thunderstorm warning is in effect for southwestern Allegany county until 345 PM EDT. && LAT...LON 4200 7831 4210 7810 4200 7804 TIME...MOT...LOC 1907Z 063DEG 13KT 4199 7815 HAIL...0.75IN WIND...60MPH $$ JLA
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 1:28 PM EDT | Special Weather Statement | BUF | Cattaraugus | 92 min |
| Jun 9, 2:33 PM EDT | Special Weather Statement | BUF | Allegany | 27 min |
| Jun 9, 3:02 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 43 min |
| Jun 9, 3:09 PM EDT | Special Weather Statement | BUF | Cattaraugus | 66 min |
| Jun 9, 3:18 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus | 57 min |
| Jun 9, 3:32 PM EDT | Flash Flood Warning | BUF | Allegany | 3 hr |
| Jun 9, 4:00 PM EDT | Flash Flood Warning | BUF | Cattaraugus | 3 hr |
| Jun 9, 4:14 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 61 min |
| Jun 9, 4:35 PM EDT | Special Weather Statement | BUF | Chautauqua | 40 min |
| Jun 9, 5:04 PM EDT | Flash Flood Warning | BUF | Chautauqua | 3 hr |
| Jun 9, 5:13 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 47 min |
| Jun 9, 5:41 PM EDT | Special Weather Statement | BUF | Cattaraugus | 64 min |
| Jun 9, 5:56 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 33 min |
| Jun 9, 6:22 PM EDT | Flash Flood Warning | BUF | Cattaraugus | 116 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.