Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 93, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 29, 2021, 10:15 AM EDT for Cattaraugus County, Chautauqua County, Erie County, New York. It was in force for 60 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
- Jul 29, 2021, 10:15 AM EDT (14:15 UTC)
- Expired
- Jul 29, 2021, 11:15 AM EDT
- In force
- 60 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY
The radar
The Buffalo radar (KBUF), 95 km from the middle of the area, began a volume at 14:16 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 |
|---|---|---|---|
| Jul 29, 10:47 AM EDT | TSTM WND DMG | 1 Sse Ellington, NY | REPORT OF A DOWNED TREE ON ROUTE 62 BETWEEN ABBEY HILL RD AND LITTLE RD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 2.3 hours before the alert went out and 95 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
- 27 J/kg
- Mixed-layer CIN
- -325 J/kg
- Mixed-layer LCL
- 1482 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
672
WUUS51 KBUF 291415
SVRBUF
NYC009-013-029-291515-
/O.NEW.KBUF.SV.W.0093.210729T1415Z-210729T1515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1015 AM EDT Thu Jul 29 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Cattaraugus County in western New York...
Southwestern Erie County in western New York...
Chautauqua County in western New York...
* Until 1115 AM EDT..
* At 1015 AM EDT, severe thunderstorms were located along a line
extending from near North Collins to near Dunkirk to near Westfield
to near Northwest Harborcreek, moving southeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Jamestown, Dunkirk, Fredonia, Salamanca, Allegany State Park,
Westfield, Lakewood, Gowanda, Silver Creek and Falconer.
This includes the following highways...
Interstate 90 between exits 61 and 58.
Interstate 86 between exits 4 and 21.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4227 7976 4228 7973 4229 7975 4261 7906
4226 7832 4200 7900 4200 7976
TIME...MOT...LOC 1415Z 299DEG 26KT 4257 7896 4247 7928 4235 7957 4214
8003
HAIL...<.75IN
WIND...60MPH
$$
JJR2 follow-up statements
193
WWUS51 KBUF 291447
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
1047 AM EDT Thu Jul 29 2021
NYC009-013-029-291515-
/O.CON.KBUF.SV.W.0093.000000T0000Z-210729T1515Z/
Cattaraugus NY-Erie NY-Chautauqua NY-
1047 AM EDT Thu Jul 29 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EDT
FOR CATTARAUGUS...SOUTHWESTERN ERIE AND CHAUTAUQUA COUNTIES...
At 1046 AM EDT, severe thunderstorms were located along a line
extending from near Springville to 8 miles southwest of Gowanda to
near Clymer, moving southeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Jamestown, Dunkirk, Fredonia, Salamanca, Allegany State Park,
Westfield, Lakewood, Gowanda, Silver Creek and Falconer.
This includes the following highways...
Interstate 90 between exits 61 and 58.
Interstate 86 between exits 4 and 21.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4227 7976 4228 7973 4229 7974 4261 7906
4226 7832 4200 7900 4200 7976
TIME...MOT...LOC 1446Z 298DEG 26KT 4248 7875 4238 7907 4226 7936 4200
7968
HAIL...<.75IN
WIND...60MPH
$$
JJR471
WWUS51 KBUF 291510
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
1110 AM EDT Thu Jul 29 2021
NYC009-013-029-291520-
/O.EXP.KBUF.SV.W.0093.000000T0000Z-210729T1515Z/
Cattaraugus NY-Erie NY-Chautauqua NY-
1110 AM EDT Thu Jul 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR CATTARAUGUS...SOUTHWESTERN
ERIE AND CHAUTAUQUA COUNTIES WILL EXPIRE AT 1115 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
is still possible with these thunderstorms.
LAT...LON 4227 7976 4228 7973 4229 7974 4261 7906
4226 7832 4200 7900 4200 7976
TIME...MOT...LOC 1510Z 299DEG 26KT 4242 7861 4232 7893 4220 7922 4194
7954
$$
JJRThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 9:52 AM EDT | Special Marine Warning | BUF | 53 min | |
| Jul 29, 9:59 AM EDT | Special Weather Statement | BUF | Cattaraugus, Chautauqua | 61 min |
| Jul 29, 4:17 PM EDT | Beach Hazards Statement | BUF | Cayuga, Monroe, Niagara, Orleans, Oswego, Wayne | 30 hr |
| Jul 29, 4:17 PM EDT | Small Craft Advisory | BUF | 27 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.