Alert archive / New York / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 72, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 29, 2020, 3:41 PM EDT for Livingston County, Ontario County, New York. It was in force for 64 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 29, 2020, 3:41 PM EDT (19:41 UTC)
- Expired
- Jul 29, 2020, 4:45 PM EDT
- In force
- 64 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Livingston County, NY, Ontario County, NY
The radar
The Binghamton radar (KBGM), 122 km from the middle of the area, began a volume at 19:43 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, 3:52 PM EDT | TSTM WND DMG | Conesus, NY | TREES AND POWERLINES DOWN |
| Jul 29, 3:55 PM EDT | TSTM WND DMG | Livonia, NY | TREES AND POWERLINES DOWN |
| Jul 29, 4:17 PM EDT | TSTM WND DMG | 1 S Roseland Park, NY | LARGE TREE DOWN ON A PARKED CAR ON SANDY BEACH DR |
| Jul 29, 4:28 PM EDT | TSTM WND DMG | 3 Se Cottage City, NY | LARGE TREE LIMBS AND WIRES DOWN NEAR THE INTERSECTION OF ROUTE 245 AND 247 |
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, 7.7 hours before the alert went out and 120 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
- 95 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 995 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
387
WUUS51 KBUF 291941
SVRBUF
NYC051-069-292045-
/O.NEW.KBUF.SV.W.0072.200729T1941Z-200729T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
341 PM EDT Wed Jul 29 2020
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
East central Livingston County in western New York...
Central Ontario County in western New York...
* Until 445 PM EDT..
* At 341 PM EDT, a severe thunderstorm was located over Hemlock, or
10 miles east of Geneseo, moving east at 25 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...
Geneva, Canandaigua, Conesus, Bristol, Rushville, Honeoye, Hemlock,
Gorham, Canadice and Livonia.
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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4268 7770 4286 7770 4289 7697 4287 7697
4286 7698 4284 7697 4283 7698 4276 7697
4276 7731 4271 7735 4265 7737
TIME...MOT...LOC 1941Z 271DEG 22KT 4277 7760
HAIL...1.00IN
WIND...60MPH
$$
Fries2 follow-up statements
638
WWUS51 KBUF 292012 RRA
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
412 PM EDT Wed Jul 29 2020
NYC051-292022-
/O.CAN.KBUF.SV.W.0072.000000T0000Z-200729T2045Z/
Livingston NY-
412 PM EDT Wed Jul 29 2020
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LIVINGSTON COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4266 7749 4287 7754 4289 7697 4287 7697
4286 7698 4276 7698 4276 7731 4271 7735
4265 7737
TIME...MOT...LOC 2012Z 271DEG 22KT 4277 7734
$$
NYC069-292045-
/O.CON.KBUF.SV.W.0072.000000T0000Z-200729T2045Z/
Ontario NY-
412 PM EDT Wed Jul 29 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR CENTRAL ONTARIO COUNTY...
At 412 PM EDT, a severe thunderstorm was located near Vine Valley, or
8 miles south of Canandaigua, moving east at 25 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...
Geneva, Canandaigua, Bristol, Rushville, Honeoye, Gorham, Cheshire,
Cottage City, Bristol Mountain and Hall.
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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4266 7749 4287 7754 4289 7697 4287 7697
4286 7698 4276 7698 4276 7731 4271 7735
4265 7737
TIME...MOT...LOC 2012Z 271DEG 22KT 4277 7734
HAIL...1.00IN
WIND...60MPH
$$
Fries125
WWUS51 KBUF 292030
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
430 PM EDT Wed Jul 29 2020
NYC069-292045-
/O.CON.KBUF.SV.W.0072.000000T0000Z-200729T2045Z/
Ontario NY-
430 PM EDT Wed Jul 29 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR EAST CENTRAL ONTARIO COUNTY...
At 430 PM EDT, a severe thunderstorm was located near Rushville, or 7
miles southeast of Canandaigua, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Geneva, Canandaigua, Rushville, Gorham, Cottage City and Hall.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Buffalo.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4289 7697 4287 7697 4286 7698 4276 7698
4276 7728 4288 7727
TIME...MOT...LOC 2030Z 257DEG 23KT 4281 7718
HAIL...1.00IN
WIND...60MPH
$$
FriesThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 4:20 AM EDT | Small Craft Advisory | BUF | 16 hr | |
| Jul 29, 10:06 AM EDT | Special Weather Statement | BUF | Erie | 54 min |
| Jul 29, 10:51 AM EDT | Special Weather Statement | BUF | Genesee | 54 min |
| Jul 29, 10:55 AM EDT | Special Marine Warning | BUF | 23 min | |
| Jul 29, 11:35 AM EDT | Special Weather Statement | BUF | Livingston | 55 min |
| Jul 29, 11:51 AM EDT | Special Weather Statement | BUF | Wyoming | 54 min |
| Jul 29, 12:21 PM EDT | Special Weather Statement | BUF | Wyoming | 39 min |
| Jul 29, 12:26 PM EDT | Special Weather Statement | BUF | Ontario | 34 min |
| Jul 29, 1:09 PM EDT | Special Weather Statement | BUF | Livingston | 36 min |
| Jul 29, 1:19 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Livingston, Ontario | 41 min |
| Jul 29, 1:28 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 62 min |
| Jul 29, 1:48 PM EDT | Special Marine Warning | BUF | 42 min | |
| Jul 29, 2:10 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 65 min |
| Jul 29, 2:13 PM EDT | Special Weather Statement | BUF | Erie | 32 min |
| Jul 29, 2:25 PM EDT | Special Marine Warning | BUF | 50 min | |
| Jul 29, 2:49 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Erie, Livingston, Wyoming | 56 min |
| Jul 29, 2:53 PM EDT | Special Weather Statement | BUF | Erie, Wyoming | 52 min |
| Jul 29, 3:27 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Wyoming | 48 min |
| Jul 29, 3:45 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Livingston, Ontario | 45 min |
| Jul 29, 4:15 PM EDT | Special Weather Statement | BUF | Monroe | 45 min |
| Jul 29, 4:20 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Ontario, Wayne | 40 min |
| Jul 29, 4:40 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Wayne | 38 min |
| Jul 29, 4:56 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego, Wayne | 64 min |
| Jul 29, 5:35 PM EDT | Special Weather Statement | BUF | Genesee | 25 min |
| Jul 29, 5:42 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Orleans | 48 min |
| Jul 29, 6:34 PM EDT | Special Weather Statement | BUF | Livingston | 26 min |
| Jul 29, 6:37 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Ontario | 51 min |
| Jul 29, 6:41 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Orleans | 34 min |
| Jul 29, 6:50 PM EDT | Tornado Warning | BUF | Livingston, Monroe, Ontario | 28 min |
Nearby
Severe Thunderstorm Warnings in New York, 2020Every severe thunderstorm warning in 2020
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.