Alert archive / New York / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 81, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 3, 2020, 7:05 PM EDT for Monroe County, Ontario County, Wayne County, New York. It was in force for 55 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
- Aug 3, 2020, 7:05 PM EDT (23:05 UTC)
- Expired
- Aug 3, 2020, 8:00 PM EDT
- In force
- 55 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Monroe County, NY, Ontario County, NY, Wayne County, NY
The radar
The Buffalo radar (KBUF), 103 km from the middle of the area, began a volume at 23:04 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 |
|---|---|---|---|
| Aug 3, 7:15 PM EDT | TSTM WND DMG | 3 Nne Mendon Center, NY | TREE DOWN ACROSS MENDON CENTER ROAD NEAR CAROLINA DR. |
| Aug 3, 7:25 PM EDT | TSTM WND DMG | Cobbs Hill, NY | TREE DOWN IN BACKYARD |
| Aug 3, 7:30 PM EDT | TSTM WND DMG | East Rochester, NY | TREE DOWN IN YARD ON SOUTH LINCOLN ROAD |
| Aug 3, 7:39 PM EDT | TSTM WND DMG | 1 Sw Hannans Corner, NY | TREE ON HOUSE ON CHELSEA WAY |
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, 11.1 hours before the alert went out and 100 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
- 968 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
396 WUUS51 KBUF 032305 SVRBUF NYC055-069-117-040000- /O.NEW.KBUF.SV.W.0081.200803T2305Z-200804T0000Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Buffalo NY 705 PM EDT Mon Aug 3 2020 The National Weather Service in Buffalo has issued a * Severe Thunderstorm Warning for... Southwestern Wayne County in western New York... Southeastern Monroe County in western New York... North central Ontario County in western New York... * Until 800 PM EDT.. * At 704 PM EDT, a severe thunderstorm was located over Henrietta, or near Brighton, moving northeast at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Rochester, Irondequoit, East Rochester, Webster, Fairport, Brighton, Ontario, Henrietta, Penfield and Newark. This includes the following highways... Interstate 390 between exits 11 and 12. Interstate 90 between exits 46 and 45. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4296 7766 4304 7772 4332 7736 4304 7702 TIME...MOT...LOC 2304Z 242DEG 24KT 4303 7763 TORNADO...POSSIBLE HAIL...<.75IN WIND...60MPH $$ RSH
2 follow-up statements
786 WWUS51 KBUF 032337 SVSBUF Severe Weather Statement National Weather Service Buffalo NY 737 PM EDT Mon Aug 3 2020 NYC055-069-117-040000- /O.CON.KBUF.SV.W.0081.000000T0000Z-200804T0000Z/ Wayne NY-Monroe NY-Ontario NY- 737 PM EDT Mon Aug 3 2020 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR SOUTHWESTERN WAYNE...EAST CENTRAL MONROE AND NORTH CENTRAL ONTARIO COUNTIES... At 737 PM EDT, a severe thunderstorm was located near Fairport, moving east at 20 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... East Rochester, Webster, Fairport, Brighton, Ontario, Penfield, Newark, Marion, Palmyra and Walworth. This includes Interstate 90 near exit 45. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4300 7745 4311 7758 4332 7736 4304 7702 TIME...MOT...LOC 2337Z 255DEG 18KT 4307 7738 TORNADO...POSSIBLE HAIL...<.75IN WIND...60MPH $$ Thomas
523
WWUS51 KBUF 032358
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
758 PM EDT Mon Aug 3 2020
NYC055-069-117-040007-
/O.EXP.KBUF.SV.W.0081.000000T0000Z-200804T0000Z/
Wayne NY-Monroe NY-Ontario NY-
758 PM EDT Mon Aug 3 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WAYNE...EAST
CENTRAL MONROE AND NORTH CENTRAL ONTARIO COUNTIES WILL EXPIRE AT 800
PM EDT...
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 will be allowed to expire. However heavy rain
is still likely with this thunderstorm.
LAT...LON 4300 7745 4311 7758 4332 7736 4304 7702
TIME...MOT...LOC 2357Z 242DEG 24KT 4312 7725
$$
ThomasThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 5:10 PM EDT | Special Weather Statement | BUF | Chautauqua | 35 min |
| Aug 3, 5:58 PM EDT | Special Weather Statement | BUF | Orleans | 32 min |
| Aug 3, 6:07 PM EDT | Special Marine Warning | BUF | 83 min | |
| Aug 3, 6:36 PM EDT | Special Marine Warning | BUF | 84 min | |
| Aug 3, 7:27 PM EDT | Special Marine Warning | BUF | 79 min | |
| Aug 3, 7:57 PM EDT | Special Weather Statement | BUF | Wayne | 63 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.