Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 34, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jun 21, 2021, 3:58 PM EDT for Monroe County, Ontario County, Wayne County, New York. It was in force for 47 min. 8 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
- Jun 21, 2021, 3:58 PM EDT (19:58 UTC)
- Expired
- Jun 21, 2021, 4:45 PM EDT
- In force
- 47 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Monroe County, NY, Ontario County, NY, Wayne County, NY
The radar
The Binghamton radar (KBGM), 127 km from the middle of the area, began a volume at 20:02 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 |
|---|---|---|---|
| Jun 21, 3:58 PM EDT | TSTM WND DMG | 3 Nne Mendon, NY | HALF DOZEN TREES BLOWN DOWN OR UPROOTED. A FEW TREES WERE SNAPPED OFF 20-25 FEET ABOVE GROUND. |
| Jun 21, 3:58 PM EDT | TSTM WND DMG | 3 Se Pittsford, NY | SIGNIFICANT TREE DAMAGE ON I-490 AT ROUTE 96 IN BUSHNELLS BASIN. |
| Jun 21, 4:00 PM EDT | TSTM WND DMG | 2 Sw Fairport, NY | A HOUSE ON DUNCOTT ROAD NEAR HIGHWAY 31 HAD A TREE CUT INTO THE FRONT OF THE HOUSE. |
| Jun 21, 4:01 PM EDT | TSTM WND DMG | Victor, NY | MULTIPLE REPORTS OF TREES DOWN INCLUDING TREES ON POWER LINES. |
| Jun 21, 4:02 PM EDT | TSTM WND DMG | 2 Ne Mendon, NY | TREES DOWN ON FISHERS ROAD NEAR I-90. |
| Jun 21, 4:10 PM EDT | TSTM WND DMG | 3 Wnw Macedon, NY | TREE DOWN ON TRAILER ON QUAKER ROAD. |
| Jun 21, 4:12 PM EDT | TSTM WND DMG | Palmyra, NY | TREES DOWN INTO A CREEK. |
| Jun 21, 4:26 PM EDT | TSTM WND DMG | Lyons, NY | TREES DOWN INCLUDING TREES ON POWER LINES IN THE TOWN OF LYONS. |
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 |
|---|---|---|---|
| Jun 21, 12:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.0 hours before the alert went out and 132 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
- 9 J/kg
- Mixed-layer CIN
- -284 J/kg
- Mixed-layer LCL
- 1192 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 257 m²/s²
- 0-3 km storm-relative helicity
- 304 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
064
WUUS51 KBUF 211958
SVRBUF
NYC055-069-117-212045-
/O.NEW.KBUF.SV.W.0034.210621T1958Z-210621T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
358 PM EDT Mon Jun 21 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Wayne County in western New York...
Southeastern Monroe County in western New York...
Northern Ontario County in western New York...
* Until 445 PM EDT..
* At 358 PM EDT, a severe thunderstorm was located near Victor, or
near Fairport, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Canandaigua, East Rochester, Fairport, Brighton, Penfield, Newark,
Williamson, Marion, Lyons and Palmyra.
This includes Interstate 90 between exits 45 and 42.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4279 7747 4315 7753 4330 7678 4304 7672
4302 7677 4301 7696 4293 7697
TIME...MOT...LOC 1958Z 254DEG 40KT 4303 7746
HAIL...0.75IN
WIND...60MPH
$$
Apffel2 follow-up statements
100
WWUS51 KBUF 212025
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
425 PM EDT Mon Jun 21 2021
NYC055-212034-
/O.CAN.KBUF.SV.W.0034.000000T0000Z-210621T2045Z/
Monroe NY-
425 PM EDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONROE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
western New York.
LAT...LON 4279 7747 4319 7732 4330 7678 4304 7672
4302 7677 4301 7696 4293 7697
TIME...MOT...LOC 2024Z 254DEG 40KT 4311 7707
$$
NYC069-117-212045-
/O.CON.KBUF.SV.W.0034.000000T0000Z-210621T2045Z/
Wayne NY-Ontario NY-
425 PM EDT Mon Jun 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR WAYNE AND NORTHERN ONTARIO COUNTIES...
At 424 PM EDT, a severe thunderstorm was located near Newark, or 17
miles north of Geneva, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Canandaigua, Newark, Marion, Lyons, Palmyra, Victor, Bristol, Clifton
Springs, Clyde and Phelps.
This includes Interstate 90 between exits 44 and 42.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4279 7747 4319 7732 4330 7678 4304 7672
4302 7677 4301 7696 4293 7697
TIME...MOT...LOC 2024Z 254DEG 40KT 4311 7707
HAIL...0.75IN
WIND...60MPH
$$
Apffel409
WWUS51 KBUF 212047
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
447 PM EDT Mon Jun 21 2021
NYC069-117-212056-
/O.EXP.KBUF.SV.W.0034.000000T0000Z-210621T2045Z/
Wayne NY-Ontario NY-
447 PM EDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR WAYNE AND NORTHERN ONTARIO
COUNTIES HAS EXPIRED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been allowed to expire.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
western New York.
LAT...LON 4279 7747 4319 7732 4330 7678 4304 7672
4302 7677 4301 7696 4293 7697
TIME...MOT...LOC 2046Z 254DEG 40KT 4318 7675
$$
MitchellThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 9:04 PM EDT | Special Weather Statement | BUF | Livingston | 26 min |
| Jun 20, 9:18 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Wyoming | 42 min |
| Jun 20, 9:55 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Monroe, Ontario, Wayne | 39 min |
| Jun 20, 11:23 PM EDT | Special Marine Warning | BUF | 67 min | |
| Jun 20, 11:23 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 52 min |
| Jun 21, 12:07 AM EDT | Special Marine Warning | BUF | 53 min | |
| Jun 21, 12:17 AM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 43 min |
| Jun 21, 12:30 AM EDT | Special Marine Warning | BUF | 34 min | |
| Jun 21, 1:47 AM EDT | Special Marine Warning | BUF | 43 min | |
| Jun 21, 2:14 AM EDT | Special Weather Statement | BUF | Erie | 46 min |
| Jun 21, 2:30 AM EDT | Special Marine Warning | BUF | 45 min | |
| Jun 21, 2:54 AM EDT | Special Weather Statement | BUF | Erie, Genesee | 51 min |
| Jun 21, 3:20 AM EDT | Special Marine Warning | BUF | 55 min | |
| Jun 21, 3:36 AM EDT | Special Weather Statement | BUF | Monroe, Orleans | 39 min |
| Jun 21, 3:42 AM EDT | Special Weather Statement | BUF | Chautauqua | 63 min |
| Jun 21, 3:50 AM EDT | Special Marine Warning | BUF | 55 min | |
| Jun 21, 4:12 AM EDT | Special Weather Statement | BUF | Chautauqua | 48 min |
| Jun 21, 4:19 AM EDT | Special Marine Warning | BUF | 26 min | |
| Jun 21, 4:28 AM EDT | Beach Hazards Statement | BUF | Cayuga, Chautauqua, Erie, Jefferson, Monroe, Niagara and 3 more | 42 hr |
| Jun 21, 4:31 AM EDT | Special Weather Statement | BUF | Cattaraugus, Erie, Genesee, Wyoming | 44 min |
| Jun 21, 4:48 AM EDT | Special Marine Warning | BUF | 42 min | |
| Jun 21, 5:15 AM EDT | Special Weather Statement | BUF | Allegany, Cattaraugus, Livingston, Wyoming | 75 min |
| Jun 21, 5:48 AM EDT | Severe Thunderstorm Warning | BUF | Livingston, Ontario | 42 min |
| Jun 21, 6:25 AM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Ontario, Wayne | 50 min |
| Jun 21, 6:33 AM EDT | Special Marine Warning | BUF | 57 min | |
| Jun 21, 6:55 AM EDT | Special Weather Statement | BUF | Oswego | 50 min |
| Jun 21, 7:15 AM EDT | Special Marine Warning | BUF | 30 min | |
| Jun 21, 7:20 AM EDT | Special Weather Statement | BUF | Jefferson, Lewis, Oswego | 55 min |
| Jun 21, 7:25 AM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 50 min |
| Jun 21, 1:31 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 43 min |
| Jun 21, 1:34 PM EDT | Special Marine Warning | BUF | 56 min | |
| Jun 21, 1:53 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 67 min |
| Jun 21, 2:01 PM EDT | Special Marine Warning | BUF | 44 min | |
| Jun 21, 2:18 PM EDT | Severe Thunderstorm Warning | BUF | Erie | 42 min |
| Jun 21, 2:18 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 42 min |
| Jun 21, 2:44 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Wyoming | 46 min |
| Jun 21, 3:07 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 53 min |
| Jun 21, 3:18 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Ontario, Wyoming | 57 min |
| Jun 21, 3:55 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Ontario | 50 min |
| Jun 21, 4:25 PM EDT | Special Marine Warning | BUF | 77 min | |
| Jun 21, 4:35 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego, Wayne | 55 min |
| Jun 21, 5:02 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 58 min |
| Jun 21, 5:26 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 64 min |
| Jun 21, 6:21 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 26 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.