Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 108, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Sep 13, 2021, 12:09 AM EDT for Erie County, Genesee County, Wyoming County, New York. It was in force for 66 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 13, 2021, 12:09 AM EDT (04:09 UTC)
- Expired
- Sep 13, 2021, 1:15 AM EDT
- In force
- 66 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Erie County, NY, Genesee County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 5 km from the middle of the area, began a volume at 04:14 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 13, 12:26 AM EDT | TSTM WND DMG | 2 Nne Lackawanna, NY | TREE DOWN ON WIRE IN SOUTH BUFFALO. TIME ESTIMATED FROM RADAR. SOURCE IS ERIE CO DISPATCH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 12, 10:25 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 4.2 hours before the alert went out and 8 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
- 412 J/kg
- Mixed-layer CIN
- -125 J/kg
- Mixed-layer LCL
- 706 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.5
The text
As transmitted.
945
WUUS51 KBUF 130409
SVRBUF
NYC029-037-121-130515-
/O.NEW.KBUF.SV.W.0108.210913T0409Z-210913T0515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1209 AM EDT Mon Sep 13 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Northern Wyoming County in western New York...
Northeastern Erie County in western New York...
Genesee County in western New York...
* Until 115 AM EDT.
* At 1207 AM EDT, severe thunderstorms were located along a line
extending from near Grand Island to near Erie Basin Marina to near
Eden, moving east at 60 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Buffalo, Cheektowaga, West Seneca, North Tonawanda, Clarence,
Lackawanna, Batavia, Kenmore, Depew and Amherst.
This includes Interstate 90 between exits 57 and 47.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4307 7892 4302 7888 4302 7884 4307 7880
4308 7865 4310 7864 4307 7859 4310 7856
4308 7847 4310 7846 4311 7796 4283 7797
4272 7896 4277 7897 4280 7892 4284 7893
4292 7890 4299 7901 4306 7900 4308 7907
TIME...MOT...LOC 0407Z 250DEG 50KT 4300 7903 4285 7894 4270 7890
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RSH2 follow-up statements
173
WWUS51 KBUF 130445
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
1245 AM EDT Mon Sep 13 2021
NYC029-037-121-130515-
/O.CON.KBUF.SV.W.0108.000000T0000Z-210913T0515Z/
Wyoming NY-Erie NY-Genesee NY-
1245 AM EDT Mon Sep 13 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR NORTHERN WYOMING...NORTHEASTERN ERIE AND GENESEE COUNTIES...
At 1245 AM EDT, severe thunderstorms were located along a line
extending from near Middleport to near Pembroke to near Bennington,
moving east at 60 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
West Seneca, Clarence, Batavia, Depew, Lancaster, East Aurora, Darien
Lakes State Park, Elma, Marilla and Le Roy.
This includes Interstate 90 between exits 48A and 47.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4308 7865 4310 7864 4307 7859 4310 7856
4308 7847 4310 7846 4311 7796 4283 7797
4275 7872
TIME...MOT...LOC 0445Z 250DEG 50KT 4314 7848 4299 7839 4284 7836
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RSH155
WWUS51 KBUF 130507
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
107 AM EDT Mon Sep 13 2021
NYC029-037-121-130516-
/O.EXP.KBUF.SV.W.0108.000000T0000Z-210913T0515Z/
Wyoming NY-Erie NY-Genesee NY-
107 AM EDT Mon Sep 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WYOMING...
NORTHEASTERN ERIE AND GENESEE COUNTIES WILL EXPIRE AT 115 AM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy
rain will still occur with these thunderstorms...especially over
Genesee county.
A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
western New York.
LAT...LON 4308 7865 4310 7864 4307 7859 4310 7856
4308 7847 4310 7846 4311 7796 4283 7797
4275 7872
TIME...MOT...LOC 0506Z 250DEG 50KT 4321 7820 4306 7811 4291 7808
$$
RSHThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 10:53 PM EDT | Special Marine Warning | BUF | 82 min | |
| Sep 12, 11:00 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 75 min |
| Sep 12, 11:49 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Wyoming | 86 min |
| Sep 13, 12:25 AM EDT | Flash Flood Warning | BUF | Erie, Genesee, Wyoming | 3 hr |
| Sep 13, 12:50 AM EDT | Severe Thunderstorm Warning | BUF | Livingston, Ontario | 55 min |
| Sep 13, 1:09 AM EDT | Special Weather Statement | BUF | Genesee, Monroe, Ontario, Wayne | 66 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.