Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 75, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 15, 2021, 8:18 PM EDT for Chautauqua County, New York. It was in force for 57 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 15, 2021, 8:18 PM EDT (00:18 UTC)
- Expired
- Jul 15, 2021, 9:15 PM EDT
- In force
- 57 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Chautauqua County, NY
The radar
The Buffalo radar (KBUF), 104 km from the middle of the area, began a volume at 00:17 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 15, 8:40 PM EDT | TSTM WND DMG | Bemus Point, NY | TREE DOWN ON LAKESIDE DRIVE BLOCKING ROADWAY. |
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 00:00Z, 0.3 hours before the alert went out and 104 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
- 572 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1363 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.9
The text
As transmitted.
905
WUUS51 KBUF 160018
SVRBUF
NYC013-160115-
/O.NEW.KBUF.SV.W.0075.210716T0018Z-210716T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
818 PM EDT Thu Jul 15 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Chautauqua County in western New York...
* Until 915 PM EDT..
* At 818 PM EDT, a severe thunderstorm was located 7 miles west of
Chautauqua Institution, or 19 miles west of Jamestown and moving
east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Jamestown, Westfield, Lakewood, Falconer, Mayville, Clymer, Long
Point State Park, Jamestown West, Chautauqua Institution and
Frewsburg.
This includes Interstate 86 between exits 6 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4201 7974 4230 7970 4244 7910 4213 7906
4200 7906
TIME...MOT...LOC 0018Z 255DEG 39KT 4217 7961
HAIL...<.75IN
WIND...60MPH
$$
Reynolds2 follow-up statements
530
WWUS51 KBUF 160042
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
842 PM EDT Thu Jul 15 2021
NYC013-160115-
/O.CON.KBUF.SV.W.0075.000000T0000Z-210716T0115Z/
Chautauqua NY-
842 PM EDT Thu Jul 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR CHAUTAUQUA COUNTY...
At 842 PM EDT, a severe thunderstorm was located 8 miles northeast
of Long Point State Park, or 9 miles north of Jamestown and moving
east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Jamestown, Lakewood, Falconer, Mayville, Clymer, Long Point State
Park, Jamestown West, Chautauqua Institution, Frewsburg and
Chautauqua.
This includes Interstate 86 between exits 6 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4201 7967 4229 7954 4244 7910 4213 7906
4200 7906
TIME...MOT...LOC 0042Z 255DEG 39KT 4224 7927
HAIL...<.75IN
WIND...60MPH
$$
Reynolds758
WWUS51 KBUF 160111
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
911 PM EDT Thu Jul 15 2021
NYC013-160120-
/O.EXP.KBUF.SV.W.0075.000000T0000Z-210716T0115Z/
Chautauqua NY-
911 PM EDT Thu Jul 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR CHAUTAUQUA COUNTY WILL EXPIRE
AT 915 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.
LAT...LON 4201 7967 4229 7954 4244 7910 4213 7906
4200 7906
TIME...MOT...LOC 0110Z 255DEG 39KT 4231 7891
$$
ReynoldsThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 8:06 PM EDT | Special Weather Statement | BUF | Erie | 24 min |
| Jul 15, 8:12 PM EDT | Special Weather Statement | BUF | Chautauqua | 63 min |
| Jul 15, 9:21 PM EDT | Special Weather Statement | BUF | Cattaraugus | 54 min |
| Jul 15, 10:48 PM EDT | Special Marine Warning | BUF | 57 min | |
| Jul 15, 11:09 PM EDT | Special Weather Statement | BUF | Jefferson | 36 min |
| Jul 16, 2:13 PM EDT | Flash Flood Warning | BUF | Chautauqua | 5 hr |
| Jul 16, 2:41 PM EDT | Flash Flood Watch | BUF | Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 8 more | 32 hr |
| Jul 16, 2:59 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Chautauqua | 4 hr |
| Jul 16, 4:45 PM EDT | Small Craft Advisory | BUF | 44 hr | |
| Jul 16, 4:49 PM EDT | Areal Flood Warning | BUF | Chautauqua | 6 hr |
| Jul 16, 7:14 PM EDT | Areal Flood Warning | BUF | Chautauqua | 6 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.