Alert archive / New York / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 46, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 13, 2020, 4:12 PM EDT for Ontario County, Wayne County, New York. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2020, 4:12 PM EDT (20:12 UTC)
- Expired
- Jul 13, 2020, 5:04 PM EDT
- In force
- 52 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Ontario County, NY, Wayne County, NY
The radar
The Binghamton radar (KBGM), 131 km from the middle of the area, began a volume at 20:13 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.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.2 hours before the alert went out and 131 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1035 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
213
WUUS51 KBUF 132012
SVRBUF
NYC069-117-132115-
/O.NEW.KBUF.SV.W.0046.200713T2012Z-200713T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
412 PM EDT Mon Jul 13 2020
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Southern Wayne County in western New York...
Northeastern Ontario County in western New York...
* Until 515 PM EDT..
* At 411 PM EDT, a severe thunderstorm was located over Palmyra, or
10 miles east of Fairport, moving east at 20 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible.
* Locations impacted include...
Newark, Marion, Lyons, Palmyra, Clifton Springs, Clyde, Phelps,
Walworth, Rose and Macedon.
This includes Interstate 90 near exit 42.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. 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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4301 7737 4318 7737 4320 7680 4302 7683
4301 7696 4294 7697
TIME...MOT...LOC 2011Z 277DEG 19KT 4309 7724
HAIL...1.00IN
WIND...<50MPH
$$
JLA3 follow-up statements
540
WWUS51 KBUF 132014
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
414 PM EDT Mon Jul 13 2020
NYC069-117-132115-
/O.CON.KBUF.SV.W.0046.000000T0000Z-200713T2115Z/
Wayne NY-Ontario NY-
414 PM EDT Mon Jul 13 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR SOUTHERN WAYNE AND NORTHEASTERN ONTARIO COUNTIES...
At 414 PM EDT, a severe thunderstorm was located over Palmyra, or 11
miles east of Fairport, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Newark, Marion, Lyons, Palmyra, Clifton Springs, Clyde, Phelps,
Walworth, Rose and Macedon.
This includes Interstate 90 near exit 42.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4301 7737 4318 7737 4320 7680 4302 7683
4301 7696 4294 7697
TIME...MOT...LOC 2014Z 277DEG 19KT 4309 7722
HAIL...1.00IN
WIND...60MPH
$$
JLA289
WWUS51 KBUF 132030
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
430 PM EDT Mon Jul 13 2020
NYC069-117-132115-
/O.CON.KBUF.SV.W.0046.000000T0000Z-200713T2115Z/
Wayne NY-Ontario NY-
430 PM EDT Mon Jul 13 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR SOUTHERN WAYNE AND NORTHEASTERN ONTARIO COUNTIES...
At 429 PM EDT, a severe thunderstorm was located over Newark, or 14
miles northeast of Canandaigua, moving east at 20 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...
Newark, Lyons, Palmyra, Clyde, Phelps, Walworth, Macedon, Fairville,
Port Gibson and Willow Creek Estates.
This includes Interstate 90 near exit 42.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4301 7735 4315 7728 4310 7684 4302 7683
4301 7696 4294 7697
TIME...MOT...LOC 2029Z 277DEG 19KT 4307 7713
HAIL...1.00IN
WIND...60MPH
$$
JLA033
WWUS51 KBUF 132104
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
504 PM EDT Mon Jul 13 2020
NYC069-117-132113-
/O.CAN.KBUF.SV.W.0046.000000T0000Z-200713T2115Z/
Wayne NY-Ontario NY-
504 PM EDT Mon Jul 13 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WAYNE AND
NORTHEASTERN ONTARIO COUNTIES IS CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled. However small hail and
gusty winds are still possible as thunderstorms are re developing
over portions of northeast Ontario county.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Buffalo.
LAT...LON 4301 7735 4315 7728 4310 7684 4302 7683
4301 7696 4294 7697
TIME...MOT...LOC 2100Z 277DEG 19KT 4305 7688
$$
JLAThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 3:31 AM EDT | Special Weather Statement | BUF | Jefferson | 29 min |
| Jul 13, 3:54 AM EDT | Areal Flood Warning | BUF | Jefferson | 3 hr |
| Jul 13, 4:07 AM EDT | Special Marine Warning | BUF | 38 min | |
| Jul 13, 4:09 AM EDT | Special Weather Statement | BUF | Jefferson | 66 min |
| Jul 13, 2:22 PM EDT | Special Weather Statement | BUF | Lewis | 53 min |
| Jul 13, 3:19 PM EDT | Special Weather Statement | BUF | Monroe | 56 min |
| Jul 13, 3:46 PM EDT | Special Weather Statement | BUF | Lewis | 59 min |
| Jul 13, 4:42 PM EDT | Special Weather Statement | BUF | Genesee | 33 min |
| Jul 13, 5:02 PM EDT | Special Weather Statement | BUF | Ontario | 58 min |
| Jul 13, 5:05 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 55 min |
| Jul 13, 5:16 PM EDT | Severe Thunderstorm Warning | BUF | Wyoming | 33 min |
| Jul 13, 5:38 PM EDT | Tornado Warning | BUF | Jefferson, Lewis | 22 min |
| Jul 13, 5:51 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Wyoming | 39 min |
| Jul 13, 6:00 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 35 min |
| Jul 13, 6:19 PM EDT | Special Weather Statement | BUF | Erie | 56 min |
| Jul 13, 6:20 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 37 min |
| Jul 13, 6:33 PM EDT | Special Weather Statement | BUF | Jefferson | 27 min |
| Jul 13, 6:35 PM EDT | Special Weather Statement | BUF | Ontario | 40 min |
| Jul 13, 6:40 PM EDT | Special Weather Statement | BUF | Wyoming | 50 min |
| Jul 13, 7:29 PM EDT | Special Weather Statement | BUF | Erie | 31 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.