Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 66, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 13, 2021, 5:57 PM EDT for 5 counties in New York. It was in force for 63 min. 11 reports 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 13, 2021, 5:57 PM EDT (21:57 UTC)
- Expired
- Jul 13, 2021, 7:00 PM EDT
- In force
- 63 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 87 km from the middle of the area, began a volume at 22:00 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 13, 6:11 PM EDT | TSTM WND DMG | Salamanca, NY | SEVERAL REPORTS OF TREES DOWN...TREES ON CARS...TREES ON HOUSES AND POWERLINES DOWN IN SALAMANCA. |
| Jul 13, 6:17 PM EDT | TSTM WND DMG | Carrollton, NY | TREES DOWN IN CARROLLTON. TIME ESTIMATED BASED ON RADAR. |
| Jul 13, 6:22 PM EDT | TSTM WND DMG | Allegany, NY | TREES DOWN IN ALLEGANY. TIME ESTIMATED BASED ON RADAR. |
| Jul 13, 6:28 PM EDT | TSTM WND DMG | Olean, NY | TREES DOWN IN OLEAN. TIME ESTIMATED BASED ON RADAR. |
| Jul 13, 6:39 PM EDT | TSTM WND DMG | Cuba, NY | TREES DOWN IN CUBA. TIME ESTIMATED BASED ON RADAR. |
| Jul 13, 6:48 PM EDT | TSTM WND DMG | Caneadea, NY | TREES DOWN IN CANEADEA. TIME ESTIMATED FROM RADAR. |
| Jul 13, 6:48 PM EDT | TSTM WND DMG | Friendship, NY | TREES DOWN IN FRIENDSHIP. TIME ESTIMATED BASED ON RADAR. |
| Jul 13, 6:52 PM EDT | TSTM WND DMG | Hume, NY | TREES DOWN IN HUME. TIME ESTIMATED BASED ON RADAR. |
| Jul 13, 6:59 PM EDT | TSTM WND DMG | Angelica, NY | TREES DOWN IN ANGELICA. TIME ESTIMATED BASED ON RADAR. |
| Jul 13, 6:59 PM EDT | TSTM WND DMG | Scio, NY | TREES DOWN IN SCIO. TIME ESTIMATED BASED ON RADAR. |
| Jul 13, 7:00 PM EDT | TSTM WND DMG | Allen, NY | TREES DOWN IN ALLEN. TIME ESTIMATED BASED ON RADAR. |
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 |
|---|---|---|---|
| Jul 13, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.0 hours before the alert went out and 85 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
- 610 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 907 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted.
124
WUUS51 KBUF 132157
SVRBUF
NYC003-009-013-029-121-132300-
/O.NEW.KBUF.SV.W.0066.210713T2157Z-210713T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
557 PM EDT Tue Jul 13 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Southwestern Wyoming County in western New York...
Cattaraugus County in western New York...
Southeastern Erie County in western New York...
Southeastern Chautauqua County in western New York...
Allegany County in western New York...
* Until 700 PM EDT..
* At 556 PM EDT, severe thunderstorms were located along a line
extending from 7 miles east of Frewsburg to near Kane, moving
northeast at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Olean, Salamanca, Allegany State Park, Ashford, Arcade, Allegany,
Franklinville, Belfast, Cuba and Rushford.
This includes Interstate 86 between exits 17 and 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Buffalo.
Damaging winds and continuous cloud to ground lightning is occurring
with these storms. 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 these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4200 7907 4205 7910 4272 7838 4226 7781
4200 7816
TIME...MOT...LOC 2156Z 221DEG 48KT 4204 7901 4165 7876
HAIL...<.75IN
WIND...60MPH
$$
Welch2 follow-up statements
204
WWUS51 KBUF 132236
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
636 PM EDT Tue Jul 13 2021
NYC013-132244-
/O.CAN.KBUF.SV.W.0066.000000T0000Z-210713T2300Z/
Chautauqua NY-
636 PM EDT Tue Jul 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHAUTAUQUA COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western New York.
LAT...LON 4200 7854 4239 7874 4265 7845 4272 7837
4226 7781 4200 7816
TIME...MOT...LOC 2234Z 219DEG 46KT 4239 7857 4202 7842
$$
NYC003-009-029-121-132300-
/O.CON.KBUF.SV.W.0066.000000T0000Z-210713T2300Z/
Wyoming NY-Cattaraugus NY-Erie NY-Allegany NY-
636 PM EDT Tue Jul 13 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTHWESTERN WYOMING...EASTERN CATTARAUGUS...SOUTHEASTERN ERIE
AND ALLEGANY COUNTIES...
At 634 PM EDT, severe thunderstorms were located along a line
extending from near Ashford to near Olean, moving northeast at 55
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Olean, Ashford, Arcade, Allegany, Franklinville, Belfast, Cuba,
Rushford, Chaffee and Weston Mills.
This includes Interstate 86 between exits 24 and 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Buffalo.
Cloud to ground lightning is occurring with these storms.
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.
&&
LAT...LON 4200 7854 4239 7874 4265 7845 4272 7837
4226 7781 4200 7816
TIME...MOT...LOC 2234Z 219DEG 46KT 4239 7857 4202 7842
HAIL...<.75IN
WIND...60MPH
$$
Welch843
WWUS51 KBUF 132305
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
705 PM EDT Tue Jul 13 2021
NYC003-009-029-121-132314-
/O.EXP.KBUF.SV.W.0066.000000T0000Z-210713T2300Z/
Wyoming NY-Cattaraugus NY-Erie NY-Allegany NY-
705 PM EDT Tue Jul 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WYOMING...EASTERN
CATTARAUGUS...SOUTHEASTERN ERIE AND ALLEGANY COUNTIES HAS EXPIRED...
The storms which prompted the warning have weakened below severe
limits. Therefore, the warning has been allowed to expire. However
gusty winds and heavy rain are still possible with these
thunderstorms.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western New York.
LAT...LON 4200 7854 4239 7874 4265 7845 4272 7837
4226 7781 4200 7816
TIME...MOT...LOC 2304Z 221DEG 48KT 4268 7823 4231 7808
$$
WelchThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 3:40 AM EDT | Special Weather Statement | BUF | Lewis | 50 min |
| Jul 13, 1:29 PM EDT | Special Weather Statement | BUF | Erie | 46 min |
| Jul 13, 1:56 PM EDT | Special Marine Warning | BUF | 64 min | |
| Jul 13, 2:45 PM EDT | Special Weather Statement | BUF | Monroe | 30 min |
| Jul 13, 3:40 PM EDT | Special Marine Warning | BUF | 50 min | |
| Jul 13, 4:34 PM EDT | Special Marine Warning | BUF | 56 min | |
| Jul 13, 4:41 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 64 min |
| Jul 13, 4:46 PM EDT | Special Weather Statement | BUF | Wayne | 44 min |
| Jul 13, 4:50 PM EDT | Severe Thunderstorm Warning | BUF | Oswego | 55 min |
| Jul 13, 4:59 PM EDT | Special Marine Warning | BUF | 46 min | |
| Jul 13, 5:23 PM EDT | Severe Thunderstorm Warning | BUF | Oswego | 45 min |
| Jul 13, 5:26 PM EDT | Special Marine Warning | BUF | 64 min | |
| Jul 13, 5:33 PM EDT | Special Marine Warning | BUF | 42 min | |
| Jul 13, 5:38 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 52 min |
| Jul 13, 5:41 PM EDT | Severe Thunderstorm Warning | BUF | Lewis, Oswego | 64 min |
| Jul 13, 5:43 PM EDT | Special Weather Statement | BUF | Monroe | 32 min |
| Jul 13, 6:05 PM EDT | Special Marine Warning | BUF | 55 min | |
| Jul 13, 6:07 PM EDT | Special Marine Warning | BUF | 38 min | |
| Jul 13, 6:08 PM EDT | Special Marine Warning | BUF | 52 min | |
| Jul 13, 6:09 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 53 min |
| Jul 13, 6:19 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 41 min |
| Jul 13, 6:46 PM EDT | Special Marine Warning | BUF | 89 min | |
| Jul 13, 6:55 PM EDT | Severe Thunderstorm Warning | BUF | Niagara, Orleans | 50 min |
| Jul 13, 7:02 PM EDT | Special Marine Warning | BUF | 58 min | |
| Jul 13, 7:05 PM EDT | Special Weather Statement | BUF | Jefferson | 25 min |
| Jul 13, 7:07 PM EDT | Special Marine Warning | BUF | 53 min | |
| Jul 13, 7:15 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Orleans, Wayne | 60 min |
| Jul 13, 7:27 PM EDT | Special Marine Warning | BUF | 93 min | |
| Jul 13, 7:41 PM EDT | Special Marine Warning | BUF | 94 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.