A cluster of thunderstorms dropped into portions of Central New York during the evening of the 9th. One of these thunderstorms became severe and produced minor tree damage in the Syracuse area.
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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 cluster of thunderstorms dropped into portions of Central New York during the evening of the 9th. One of these thunderstorms became severe and produced minor tree damage in the Syracuse area.
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 9, 3:00 PM EST, 3 hours 30 minutes earlier.
Area Forecast Discussion National Weather Service Binghamton NY 400 PM EDT Fri Aug 9 2019 .SYNOPSIS... The weather will be cool and mostly dry through Saturday, other than a few rain showers at times in parts of Central New York. High pressure dominates the region Sunday into Monday before the pattern becomes active into the middle of next week. && .NEAR TERM /THROUGH SATURDAY NIGHT/... 215 PM Update... Cool breezy and mainly dry weather will prevail through the near term, with just a few showers mainly in Central New York at times. A large upper low is spinning over northern Ontario-Quebec, with small shortwaves pivoting around it and through our region. The air mass will be cool yet dry, which will limit coverage of any showers during shortwave passages. One of those shortwaves will cross Lake Ontario this afternoon-early evening, resulting in scattered showers and isolated thunder in parts of Central NY; especially the NY Thruway corridor. The air mass is actually chilly enough for lake-enhancement to occur overnight into Saturday morning, to keep isolated to scattered showers going east-southeast of Lake Ontario. Diurnal heating will cause a final few showers to pop during the day yet also entrainment of very dry air which will diminish that activity by late afternoon. Lows tonight will be 50s, followed by highs of 70s Saturday. Some higher elevations will not even get out of the 60s. Though northwest winds will gust into the 15-25 mph range again Saturday, decoupling will occur Saturday night with a clearing sky. This will set up a good radiational cooling night with lows of upper 40s-lower 50s for most locations by dawn Sunday. && .SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/... Generally quiet weather expected through this period. Upper level trough departs off into northern New England on Sunday, as upper level heights rise over central NY and NE PA. Surface high also builds into the region from the Ohio Valley, as surface winds back from northwest to west by afternoon. Could see some lingering clouds off the lakes and into the upslope areas of the Susquehanna region and western Catskills during the morning or early afternoon. As the ridging begins to dominate later in the day, we should see mostly sunny skies. Seasonable temperatures, with highs reaching the upper 70s to low 80s. Warm frontal boundary slowly moves through the region from the Ohio Valley later Sunday night into Monday. Surface dew points gradually rise back into the lower 60s by Monday afternoon. Will see some increase in cloud cover, but still partly cloudy. Also, cannot rule out a stray shower or thunderstorm after midnight and through the day Monday...especially northwest of Binghamton. Much of the area looks to remain dry. Mild, with lows 55-60 and highs in the low to mid-80s. The warm front becomes a stationary boundary, likely across the northern portion of the CWA Monday evening. Latest guidance is in good agreement that a surface wave will ride along this boundary across the upper Ohio Valley/ Lower Great Lakes. However there are still timing differences. The 12z GFS is much faster than the ECMWF and has a stronger low pressure center. The track of the surface low is also further north on the GFS, compared to the ECMWF. The 12z GFS tracks a 997mb low near Toronto by 12z Tuesday (which would spread rain over our entire area before daybreak Tuesday)...meanwhile the 12z ECMWF shows a 1007mb low just south of Toledo OH at this time (and basically holds off any rain to our SW Monday night). Went very close to WPC guidance for the Monday night period, as it seems to be a good compromise at this time. This solution brings in a chance of rain showers from Binghamton--Ithaca--Scranton south and west...with only slight chance PoPs off to the northeast. Mild south winds and increasing clouds keep temperatures in the upper 50s to lower 60s overnight. && .LONG TERM /TUESDAY THROUGH FRIDAY/... Above mentioned low pressure wave continues to move across the region during the day Tuesday. Again, there remain differences in the timing and especially track of this low. The GFS is further north and would put our area into the warm sector of this system, with enough instability for thunderstorms. The ECMWF tracks the low south of our area and would perhaps only have some elevated instability around. Again, felt the best way to handle the model differences was with a blend (close to WPC and Superblend guidance). This gave higher end chance PoPs areawide, with rain showers north and a chance of thunderstorms south. Temperatures should still manage to rise into the upper 70s and low 80s, along with humid dew points in the low to mid- 60s. After this more defined wave of low pressure moves off to the east Tuesday night, guidance is in fairly good agreement that our area will be under a very broad, and weak upper trough; with 500mb heights still around 580dm midweek. There could be enough lingering instability around on Wednesday for a shower or thunderstorm. By Thursday, even the weak upper level tough begins to move away, with heights rising as a ridge builds in from the central US and Ohio Valley. Therefore, at this time, mainly dry weather is expected Thursday into Friday. Temperatures are forecast to be very steady mid to late week...with lows mainly in the 50s to low 60s. Highs are forecast to be seasonable in the mid-70s to lower 80s. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... VFR conditions are generally expected for this TAF period. Weak disturbances will bring a few scattered showers to KRME-KSYR this evening, and again for a time in the morning at KSYR, but they are not expected to actually cause restrictions. There is also a small chance of embedded thunder this evening KSYR- KRME but confidence is much too low to include in TAFs; watch for amendments. West-northwest winds of 8-12 knots with higher gusts, will slacken to a light westerly tonight, before returning again late Saturday morning. Outlook... Late Saturday through Monday night...Mainly VFR, except predawn valley fog possible at KELM each morning. Tuesday through Wednesday...Chance of showers and thunderstorms with associated restrictions as a system moves through the area. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...None. NY...None. && SYNOPSIS...MDP NEAR TERM...MDP SHORT TERM...MJM LONG TERM...MJM AVIATION...MDP
Hazardous Weather Outlook National Weather Service Binghamton NY 222 PM EDT Fri Aug 9 2019 NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043- 044-047-048-072-101830- 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- 222 PM EDT Fri Aug 9 2019 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...Saturday through Thursday. 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
652 PM EDT Fri Aug 9 2019
NYZ017-018-092330-
Onondaga NY-Southern Cayuga NY-
652 PM EDT Fri Aug 9 2019
...STRONG THUNDERSTORM WILL AFFECT...NORTH CENTRAL CAYUGA AND
NORTHERN ONONDAGA COUNTIES UNTIL 730 PM EDT...
At 652 PM EDT, Doppler radar was tracking a strong thunderstorm near
Cato, or 12 miles north of Auburn, moving east at 35 mph.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Onondaga, Syracuse, Clay, Cicero, De Witt, Lysander, Van Buren,
Baldwinsville, North Syracuse and Solvay.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall is also occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4322 7609 4320 7608 4320 7605 4317 7598
4298 7595 4300 7665 4302 7665 4303 7649
4323 7647 4323 7630 4320 7628 4321 7626
4324 7627 4324 7626 4320 7622 4322 7620
4326 7621 4326 7619
TIME...MOT...LOC 2252Z 264DEG 31KT 4311 7656
RRMSpecial Weather Statement
National Weather Service Binghamton NY
728 PM EDT Fri Aug 9 2019
NYZ009-018-036-037-100015-
Onondaga NY-Southern Oneida NY-Madison NY-Northern Oneida NY-
728 PM EDT Fri Aug 9 2019
...STRONG THUNDERSTORM WILL AFFECT...SOUTHWESTERN ONEIDA...
NORTHWESTERN MADISON AND NORTHEASTERN ONONDAGA COUNTIES UNTIL 815 PM
EDT...
At 727 PM EDT, Doppler radar was tracking a strong thunderstorm over
Syracuse, moving east at 40 mph.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Onondaga, Syracuse, Clay, Rome, Cicero, De Witt, Sullivan, Oneida,
Lenox and North Syracuse.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall is also occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4290 7551 4297 7626 4319 7625 4319 7602
4318 7601 4318 7594 4316 7592 4315 7589
4319 7587 4319 7551
TIME...MOT...LOC 2327Z 269DEG 34KT 4306 7616
RRMThe Ft Drum radar (KTYX), 88 km away, was scanning. The volume nearest the first event began at 23:28 UTC.
1 thunderstorm wind. Local standard time, as filed.
Strong thunderstorm winds brought down a couple of trees.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2019Every state in 2019This day in weather historyWarnings in New York, August 2019
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: 854270.