Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 48, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 6, 2021, 12:00 PM EDT for Monroe County, Wayne County, New York. It was in force for 45 min. 4 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 6, 2021, 12:00 PM EDT (16:00 UTC)
- Expired
- Jul 6, 2021, 12:45 PM EDT
- In force
- 45 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Monroe County, NY, Wayne County, NY
The radar
The Buffalo radar (KBUF), 100 km from the middle of the area, began a volume at 16:01 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 6, 12:10 PM EDT | TSTM WND DMG | 2 Nnw Rochester, NY | SEVERAL REPORTS OF TREES DOWN AND POWERLINES DOWN IN IRONDEQUOIT. |
| Jul 6, 12:12 PM EDT | TSTM WND DMG | 1 W Irondequoit, NY | LARGE BRANCHES DOWN ONTO PORTLAND AVENUE. |
| Jul 6, 12:12 PM EDT | TSTM WND DMG | 1 Wsw Irondequoit, NY | LARGE TREE UPROOTED ON SETHLAND DRIVE. |
| Jul 6, 12:12 PM EDT | TSTM WND DMG | Irondequoit, NY | LARGE BRANCH FELL ONTO A HOUSE. |
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, 4.0 hours before the alert went out and 97 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
- 997 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
789
WUUS51 KBUF 061600
SVRBUF
NYC055-117-061700-
/O.NEW.KBUF.SV.W.0048.210706T1600Z-210706T1700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1200 PM EDT Tue Jul 6 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Western Wayne County in western New York...
East central Monroe County in western New York...
* Until 100 PM EDT..
* At 1200 PM EDT, a severe thunderstorm was located over Gates-North
Gates, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Rochester, Greece, Irondequoit, Chili, East Rochester, Webster,
Fairport, Brighton, Gates-North Gates and Ontario.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4310 7782 4325 7781 4329 7714 4307 7713
TIME...MOT...LOC 1600Z 267DEG 32KT 4318 7769
HAIL...1.00IN
WIND...60MPH
$$
Hitchcock2 follow-up statements
107 WWUS51 KBUF 061626 SVSBUF Severe Weather Statement National Weather Service Buffalo NY 1226 PM EDT Tue Jul 6 2021 NYC055-117-061700- /O.CON.KBUF.SV.W.0048.000000T0000Z-210706T1700Z/ Wayne NY-Monroe NY- 1226 PM EDT Tue Jul 6 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM EDT FOR WESTERN WAYNE AND EAST CENTRAL MONROE COUNTIES... At 1226 PM EDT, a severe thunderstorm was located over Webster, moving east at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... East Rochester, Webster, Fairport, Brighton, Ontario, Penfield, Williamson, Marion, Walworth and Pittsford. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4309 7752 4327 7752 4329 7714 4307 7713 TIME...MOT...LOC 1626Z 268DEG 29KT 4320 7744 HAIL...0.75IN WIND...60MPH $$ Hitchcock
645
WWUS51 KBUF 061645
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
1245 PM EDT Tue Jul 6 2021
NYC055-117-061655-
/O.CAN.KBUF.SV.W.0048.000000T0000Z-210706T1700Z/
Wayne NY-Monroe NY-
1245 PM EDT Tue Jul 6 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN WAYNE AND EAST CENTRAL
MONROE COUNTIES IS CANCELLED...
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 has been cancelled.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Buffalo.
LAT...LON 4309 7752 4327 7752 4329 7714 4307 7713
TIME...MOT...LOC 1642Z 267DEG 32KT 4321 7721
$$
HitchcockThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 9:12 PM EDT | Special Marine Warning | BUF | 53 min | |
| Jul 5, 9:25 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 65 min |
| Jul 6, 12:26 AM EDT | Special Marine Warning | BUF | 94 min | |
| Jul 6, 1:53 AM EDT | Special Marine Warning | BUF | 52 min | |
| Jul 6, 1:54 AM EDT | Special Weather Statement | BUF | Oswego | 66 min |
| Jul 6, 2:42 AM EDT | Special Weather Statement | BUF | Oswego | 48 min |
| Jul 6, 4:55 AM EDT | Small Craft Advisory | BUF | 13 hr | |
| Jul 6, 10:42 AM EDT | Special Weather Statement | BUF | Genesee | 48 min |
| Jul 6, 10:51 AM EDT | Special Weather Statement | BUF | Chautauqua | 39 min |
| Jul 6, 11:24 AM EDT | Special Weather Statement | BUF | Genesee | 51 min |
| Jul 6, 11:32 AM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Ontario, Orleans | 43 min |
| Jul 6, 11:55 AM EDT | Special Weather Statement | BUF | Monroe | 35 min |
| Jul 6, 12:03 PM EDT | Special Marine Warning | BUF | 57 min | |
| Jul 6, 12:21 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Ontario, Wayne | 54 min |
| Jul 6, 12:29 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 32 min |
| Jul 6, 12:42 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 63 min |
| Jul 6, 12:48 PM EDT | Special Weather Statement | BUF | Niagara | 57 min |
| Jul 6, 1:03 PM EDT | Special Weather Statement | BUF | Cayuga | 27 min |
| Jul 6, 1:10 PM EDT | Special Weather Statement | BUF | Oswego | 50 min |
| Jul 6, 1:36 PM EDT | Severe Thunderstorm Warning | BUF | Oswego | 27 min |
| Jul 6, 1:48 PM EDT | Special Weather Statement | BUF | Erie | 57 min |
| Jul 6, 2:16 PM EDT | Flash Flood Warning | BUF | Erie | 3 hr |
| Jul 6, 3:52 PM EDT | Special Weather Statement | BUF | Monroe | 23 min |
| Jul 6, 4:26 PM EDT | Special Weather Statement | BUF | Wayne | 34 min |
| Jul 6, 4:52 PM EDT | Special Weather Statement | BUF | Erie | 38 min |
| Jul 6, 6:55 PM EDT | Special Weather Statement | BUF | Erie | 35 min |
| Jul 6, 7:29 PM EDT | Special Weather Statement | BUF | Wyoming | 46 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.