A disturbance moving through the region triggered the development of showers and isolated thunderstorms across Central New York. Despite limited instability, there was adequate wind shear for storm organization.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BGM wrote it up.
A disturbance moving through the region triggered the development of showers and isolated thunderstorms across Central New York. Despite limited instability, there was adequate wind shear for storm organization. With temperatures warming into the 70s and cold air aloft, the setup was enough for storm development. One storm became severe leading to several reports of trees and wires down across Oneida County.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Binghamton, NY wrote its last area forecast discussion before the first event at Aug 11, 1:48 PM EST, 2 hours 19 minutes earlier.
Area Forecast Discussion National Weather Service Binghamton NY 248 PM EDT Sun Aug 11 2024 .SYNOPSIS... Upper level low pressure will lead to rain showers and isolated thunderstorms over central New York this afternoon and tomorrow afternoon. Below average high temperatures will be in place through Tuesday. Surface high pressure moves overhead midweek with warmer temperatures. && .NEAR TERM /THROUGH MONDAY NIGHT/... 220 PM Update... An upper level trough centered to the NNW of our CWA will be the main weather driver today. A pretty cool airmass for this time of year is moving over CNY, with 850mb temps around 6-7C. Surface heating into the 70s combined with the cool temps aloft and vorticity advection from the trough are allowing for scattered rain showers to develop across the western portion of the CWA, moving to the east. This will continue through the afternoon hours, with most of the showers south of the Mohawk Valley dissipating by the early evening. Currently, there is no thunder in these storms, but that should change as we see surface heating increase over the next hour or so, which should allow for strong enough low level lapse rates to get some weak convection going. 0-6km bulk shear is around 40kts, which is enough to organize convective showers, but we are seeing CAPE below 500 j/kg so strong storms are not expected. Flow will switch from SWerly to more westerly tonight, which will allow for scattered lake effect showers to stream along and north of the Mohawk Valley. A weak shortwave moving through Lake Ontario could kick off some showers south of the valley tonight, but confidence in this is low. Temps will fall into the mid 50s tonight. Flow becomes NWerly tomorrow morning as the upper level trough slides east of the CWA. This will push lake effect showers south of the Mohawk into CNY, reaching the Southern Tier by the afternoon. These showers will dissipate in the late afternoon/early evening as we loose surface heating. High pressure builds in from the west behind the departing trough. Temps on Monday will be the coolest of the week, with highs topping out in the upper 60s to mid 70s. && .SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... 245 PM Update: Overall, rather quiet weather is expected for the short term period. Northwest flow on Tuesday will bring seasonably cool weather on Tuesday with highs in the 70s. Cannot rule out a stray afternoon shower, but chances are that the day remains completely dry. A weak shortwave may spark a few isolated showers or thunderstorms Wednesday afternoon, but again, the majority of the day will likely be dry with high pressure remaining in control. Temperatures will be a bit warmer on Wednesday with highs in the upper 70s to lower 80s. && .LONG TERM /THURSDAY THROUGH SUNDAY/... 300 PM Update: The quiet weather pattern continues through most of the remainder of the week, but more active weather may return by next weekend. Like earlier in the week, a few diurnally-driven showers will be possible Thursday and Friday, but most of the day should remain dry. By Saturday, the upper level pattern becomes more amplified as a trough and associated frontal system approaches the region. This will bring a chance for some scattered showers and thunderstorms for Saturday and Sunday. Temperatures will be near normal for this time of the year through the long term period with highs mainly in the upper 70s to lower 80s and lows in the upper 50s to lower 60s. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... Scattered showers moving in from the west will bring temporary MVFR visby to ITH/BGM/SYR/RME this afternoon. Showers should dissipate in the early evening, leaving VFR conditions across all terminals through the overnight hours. There is some signals for fog at ELM tonight, but thinking is that winds at and just above the surface will be too strong to allow fog to develop. Winds shift to more NW tonight, pushing a MVFR cloud deck into RME and SYR in the morning hours. It may reach ITH, especially if winds line up right to get flow off Cayuga Lake, but confidence in this wasn't high enough to include it in the TAFs. AVP will remain VFR through the period. .Outlook... Monday afternoon through Thursday...Mainly VFR; isolated showers and afternoon thunderstorms at times. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...None. NY...None. && SYNOPSIS...DK/JTC NEAR TERM...JTC SHORT TERM...BJG/MPK LONG TERM...BJG/MPK AVIATION...JTC
Hazardous Weather Outlook National Weather Service Binghamton NY 352 PM EDT Sun Aug 11 2024 NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043- 044-047-048-072-122000- Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben- Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Chenango- Otsego-Tioga-Broome-Delaware-Sullivan-Bradford-Susquehanna- Northern Wayne-Wyoming-Lackawanna-Luzerne-Pike-Southern Wayne- 352 PM EDT Sun Aug 11 2024 This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement
National Weather Service Binghamton NY
408 PM EDT Sun Aug 11 2024
NYZ018-112045-
Onondaga NY-
408 PM EDT Sun Aug 11 2024
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN ONONDAGA COUNTY
THROUGH 445 PM EDT...
At 408 PM EDT, Doppler radar was tracking a strong thunderstorm near
Lysander, or near Fulton, moving east at 35 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Lysander, Baldwinsville, and Euclid.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4324 7617 4322 7609 4319 7609 4317 7648
4322 7647 4323 7630 4320 7628 4320 7627
4322 7626 4324 7627 4320 7622 4322 7620
4327 7621
TIME...MOT...LOC 2008Z 267DEG 30KT 4326 7643
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
BTLThe Ft Drum radar (KTYX), 54 km away, was scanning. The volume nearest the first event began at 21:07 UTC.
4 thunderstorm wind. Local standard time, as filed.
Strong thunderstorm winds knocked down trees and wires.
Strong thunderstorm winds knocked down trees and wires on Clock Road.
Strong thunderstorm winds knocked down multiple trees on property.
Strong thunderstorm winds knocked down trees and wires on Humaston Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2024Every state in 2024This day in weather historyWarnings in New York, August 2024
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1209123, 1209124, 1209126, 1209125.