A cold front stalled across the region during the afternoon, resulting in widely scattered showers and thunderstorms, primarily across the Lower Hudson Valley. With plenty of moisture available in the atmosphere, these storms resulted in isolated flash flooding across parts of northeastern Putnam County.
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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 OKX wrote it up.
A cold front stalled across the region during the afternoon, resulting in widely scattered showers and thunderstorms, primarily across the Lower Hudson Valley. With plenty of moisture available in the atmosphere, these storms resulted in isolated flash flooding across parts of northeastern Putnam County. A cooperative observer in Carmel, NY measured 1.39 inches of rain from this event.
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 New York, NY wrote its last area forecast discussion before the first event at Jul 28, 2:31 PM EST, 1 hour 59 minutes earlier.
Area Forecast Discussion National Weather Service New York NY 331 PM EDT Sat Jul 28 2018 .SYNOPSIS... A cold front moves offshore tonight. High pressure returns Sunday into Monday. A warm front approaches from the south on Tuesday lifting through the area Tuesday night followed by another slow moving cold front for Wednesday into Thursday. Bermuda high pressure builds along the eastern seaboard through the beginning of the weekend. && .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/... The cold front appears to be more of a moisture boundary based on latest surface obs. Dew points have begun falling into the upper 50s and low 60s just west of Orange County. A broken line of showers and storms along the moisture gradient exists and is slowly moving east. An approaching shortwave will also give the front a boost and push it offshore tonight. The cold front and approaching energy should be enough for widely scattered showers and thunderstorms to continue this evening. The threat of showers and storms ends shortly after 00z with loss of daytime and with the front moving offshore. The shortwave energy lifts across New England and offshore overnight with high pressure building into the area towards day break Sunday. Drier air works into the region from the west after midnight taking longest to reach eastern Long Island and SE Connecticut. There is a moderate risk for rip current development at Atlantic ocean beaches into this evening. && .SHORT TERM /6 AM SUNDAY MORNING THROUGH MONDAY/... High pressure will be in control on Sunday with seasonable temperatures in the lower and middle 80s. Dew points will be much lower than recent days with readings in the lower 60s. A few spots could mix out into the upper 50s in the afternoon. There may be scattered to occasionally broken high clouds on Sunday with the middle and upper level flow remaining out of the southwest. Models also prog some jet energy passing to our north. Skies should clear Sunday night with surface high pressure remaining over the region. Lows range from the lower 60s inland to the middle and upper 60s elsewhere. There is a low risk for rip current development at Atlantic ocean beaches on Sunday. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... High pressure builds across the area through Monday night resulting in dry conditions with lower humidity. A warm front begins to approach on Tuesday with a return of high humidity and spotty showers/thunderstorms across the region. A cold front then slowly approaches from the west Thursday and Friday keeping the chance of showers/thunderstorms across the area. Bermuda high pressure remains across the eastern seaboard through the weekend. Temperatures during the extended period will be in the mid to upper 80s with lows in the upper 60s to lower 70s. && .AVIATION /19Z SATURDAY THROUGH THURSDAY/... A frontal boundary will remain across New England to the DELMARVA before slowly moving east this evening and dissipating. Mainly VFR with the possibility of some afternoon scattered showers and isolated thunderstorms. Southerly winds less than 10 kt. With the passage of the cold front this evening winds shift to SW and then NW 04Z to 06Z. Winds back to more westerly Sunday morning. .OUTLOOK FOR 18Z SUNDAY THROUGH THURSDAY... .Sunday-Monday...VFR. .Tuesday-Thursday...Chance of showers/thunderstorms Tuesday afternoon through Thursday. MVFR or lower conditions possible. && .MARINE... A cold front moves offshore tonight with high pressure building across the waters. A weak pressure gradient will lead to winds and seas remaining below SCA levels. Below SCA conditions expected across all area waters Monday and Tuesday. A prolonged south to southwest flow will allow for ocean water to build to SCA levels Wednesday, and remain at SCA levels into Thursday. && .HYDROLOGY... Widely scattered showers and thunderstorms could produce locally heavy rainfall this evening. Otherwise, no hydrologic concerns are anticipated through next week. No hydrologic impacts are then anticipated through the end of the week. && .EQUIPMENT... NYC NOAA Weather Radio Station KWO-35 (162.55 MHz) remains off the air for an extended period of time. && .OKX WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. NJ...None. MARINE...None. &&
Hazardous Weather Outlook National Weather Service New York NY 320 PM EDT Sat Jul 28 2018 NYZ075-080-081-178-179-291930- Kings (Brooklyn)-Southwestern Suffolk-Southeastern Suffolk- Southern Queens-Southern Nassau- 320 PM EDT Sat Jul 28 2018 This Hazardous Weather Outlook is for southeast New York. .DAY ONE...This Afternoon and Tonight. There is a moderate risk for the development of rip currents at the ocean beaches through this evening. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time that would meet National Weather Service warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. CTZ005>012-NJZ002-004-006-103>108-NYZ067>074-078-079-176-177-291930- Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Fairfield-Southern New Haven- Southern Middlesex-Southern New London-Western Passaic- Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-Western Essex- Eastern Essex-Western Union-Eastern Union-Orange-Putnam-Rockland- Northern Westchester-Southern Westchester-New York (Manhattan)-Bronx- Richmond (Staten Island)-Northwestern Suffolk-Northeastern Suffolk- Northern Queens-Northern Nassau- 320 PM EDT Sat Jul 28 2018 This Hazardous Weather Outlook is for southern Connecticut, northeast New Jersey and southeast New York. .DAY ONE...This Afternoon and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time that would meet National Weather Service warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. ANZ330-335-338-340-345-350-353-355-291930- Long Island Sound East of New Haven CT/Port Jefferson NY- Long Island Sound West of New Haven CT/Port Jefferson NY- New York Harbor-Peconic and Gardiners Bays- South Shore Bays from Jones Inlet through Shinnecock Bay- Moriches Inlet NY to Montauk Point NY out 20 nm- Fire Island Inlet NY to Moriches Inlet NY out 20 nm- Sandy Hook NJ to Fire Island Inlet NY out 20 nm- 320 PM EDT Sat Jul 28 2018 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...This Afternoon and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time that would meet National Weather Service warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria.
Special Weather Statement
National Weather Service New York NY
1244 PM EDT SAT JUL 28 2018
NYZ067-281730-
Orange-
1244 PM EDT SAT JUL 28 2018
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL ORANGE COUNTY...
At 1243 PM EDT, a strong thunderstorm was located over
Cuddebackville, or near Port Jervis, moving east at 30 mph.
Winds in excess of 40 mph are possible with this storm.
Locations impacted include...
Middletown, Port Jervis, Goshen, Howells, Chester, Cuddebackville,
Otisville, Huguenot, Scotchtown, Deerpark, Mechanicstown, Slate Hill,
Pine Bush, Circleville and Bullville.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4150 7448 4157 7442 4160 7435 4160 7433
4162 7430 4163 7426 4134 7422 4135 7468
4136 7470 4137 7469 4140 7472 4149 7473
TIME...MOT...LOC 1643Z 267DEG 26KT 4145 7463
DSSpecial Weather Statement
National Weather Service New York NY
445 PM EDT SAT JUL 28 2018
NYZ068-282130-
Putnam-
445 PM EDT SAT JUL 28 2018
...A STRONG THUNDERSTORM WILL AFFECT PUTNAM COUNTY...
At 443 PM EDT, a strong thunderstorm was located near Litchfield, or
7 miles southwest of Torrington, moving northeast at 30 mph.
Winds in excess of 40 mph are possible with this storm.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
Locations impacted include...
Lake Carmel, Cold Spring, Carmel, Fahnestock State Park, Patterson
and Putnam Lake.
LAT...LON 4145 7354 4135 7395 4138 7396 4140 7395
4140 7396 4145 7397 4149 7393 4153 7360
4153 7353
TIME...MOT...LOC 2043Z 233DEG 44KT 4177 7324The Brookhaven radar (KOKX), 94 km away, was scanning. The volume nearest the first event began at 21:30 UTC.
2 flash flood. Local standard time, as filed.
Ludingtonville Road was closed along I-84 in Lake Carmel due to flooding.
Route 311 was closed in Patterson due to flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2018Every state in 2018This day in weather historyWarnings in New York, July 2018
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: 775710, 775712.