South to southwest winds ahead of a slowly crossing cold front, had built surf to around 3 ft and a moderate risk for rip current development on Tuesday August 18th.
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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.
South to southwest winds ahead of a slowly crossing cold front, had built surf to around 3 ft and a moderate risk for rip current development on Tuesday August 18th.
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 Aug 18, 8:45 AM EST, 2 hours 15 minutes earlier.
Area Forecast Discussion National Weather Service New York NY 945 AM EDT Tue Aug 18 2020 .SYNOPSIS... A cold front will linger offshore today through tonight and then will move farther southeast Wednesday through Wednesday night as high pressure builds in from the Ohio Valley. This high pressure area settles over the region for Thursday. The high moves off the coast Friday, and remains offshore Saturday. A trough of low pressure develops across the region Saturday night and remains into Monday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Forecast is mainly on track this morning. Slight changes were made to forecast dewpoints and temperatures to better match observed trends. Otherwise, expecting a warmer day today with more veering of winds from near the surface to around 5kft, which will make for better vertical mixing as well. Synoptic pattern in low to mid levels show a more SW to W flow. Sea breezes across Long Island and Southern Connecticut could enable enough mesoscale convergence with the lingering upper level trough so a few showers and thunderstorms are possible in the afternoon. Highs forecast range from the low to mid 80s. There is a moderate risk of rip currents at Atlantic Ocean beaches today. && .SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY NIGHT/... SW flow continues aloft with another trough in the mid levels deepening in the Southeast US. The SW to W flow will decrease across the local region in the low levels. Models show a weak low developing along the front offshore which could bring in more clouds for late tonight into early Wednesday. The front moves farther offshore going into Wednesday night as high pressure builds more into the region from the Ohio Valley. Aside from any lingering convection early this evening, kept the forecast dry for tonight through Wednesday night. High pressure builds more into the region Wednesday into Wednesday night allowing for more subsidence and a decrease in clouds. Temperatures aloft increase slightly with trough lifting northeast out of the region. More capping aloft will limit the vertical growth of clouds. Winds will remain light so less vertical mixing for Wednesday and compared to Tuesday, highs Wednesday will be a few degrees cooler. Temperatures are expected to be near to slightly below normal values during this forecast period. && .LONG TERM /THURSDAY THROUGH MONDAY/... A longwave trough in place over eastern Canada and extending into the northeastern states will be weakening Wednesday into Thursday as a strong ridge across the western states shifts east and the sub tropical high builds into the southeastern states. More zonal flow will remain across the area into Saturday as high pressure continues to dominate. With low level capping and subsidence, and no instability or CAPE Thursday the area will remain dry. Friday there will be increased surface based instability and CAPE, and a few afternoon thunderstorms may develop around the periphery of the Bermuda high, and these may drift into the western and northern zones. However, with the uncertainty will maintain a dry forecast Friday, and if future trends indicate higher chances then probabilities may be added into the western and northern zones. Saturday night through Monday the upper trough does deepen slightly as low level and surface trough develop across New England into the mid Atlantic states. Mainly afternoon and evening showers and thunderstorms will be possible from Saturday through Monday, with the better chances inland. Temperatures will be near seasonal normals Thursday with less humidity conditions. Then the airmass will be modifying Friday into early next week with the Bermuda high influencing the weather with increased heat and humidity. && .AVIATION /14Z TUESDAY THROUGH SATURDAY/... High pressure builds in briefly ahead of the next cold front, which passes through this evening. VFR. Sea breezes likely this afternoon with westerly winds around 10 kt preceding any sea breeze onset. Slight chance of an aftn shower/TSTM isolated thunderstorm but confidence is not high enough to include in the TAFs at this time. ...NY Metro Enhanced Aviation Weather Support... Detailed information, including hourly TAF wind component fcsts, can be found at: http://weather.gov/zny/n90 KJFK TAF Comments: Wind shift with sea breeze approaching the terminal may be off an hour or two. The afternoon KJFK haze potential forecast is GREEN, which implies slant range visibility P6SM outside of cloud. KLGA TAF Comments: Wind shift with sea breeze approaching the terminal may be off an hour or two. The afternoon KLGA haze potential forecast is GREEN, which implies slant range visibility P6SM outside of cloud. KEWR TAF Comments: Chance of a shift to SW-S after 22-23z. The afternoon KEWR haze potential forecast is GREEN, which implies slant range visibility P6SM outside of cloud. KTEB TAF Comments: No unscheduled amendments expected. KHPN TAF Comments: No unscheduled amendments expected. KISP TAF Comments: No unscheduled amendments expected. .OUTLOOK FOR WEDNESDAY THROUGH SATURDAY... .Tuesday...VFR. .Wednesday-Saturday...Mainly VFR. && .MARINE... For today through Saturday, with a relatively weak pressure gradient in place, conditions are forecast to remain below SCA. && .HYDROLOGY... No hydrologic impacts are expected through next weekend. && .OKX WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. NJ...None. MARINE...None. && SYNOPSIS...JM/MET NEAR TERM...JM SHORT TERM...JM LONG TERM...MET AVIATION...JC/DBR MARINE...JM HYDROLOGY...JM/MET
Hazardous Weather Outlook National Weather Service New York NY 426 AM EDT Tue Aug 18 2020 CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-190830- 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)-Kings (Brooklyn)-Northwestern Suffolk- Northeastern Suffolk-Southwestern Suffolk-Southeastern Suffolk- Northern Queens-Northern Nassau-Southern Queens-Southern Nassau- 426 AM EDT Tue Aug 18 2020 This Hazardous Weather Outlook is for southern Connecticut, northeast New Jersey and southeast New York. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time that would meet NWS 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. ANZ330-335-338-340-345-350-353-355-190830- 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- 426 AM EDT Tue Aug 18 2020 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time that would meet NWS 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.
The national radar mosaic for the moment the first event began.
1 rip current. Local standard time, as filed.
Per East Hampton PD, The body of Byron Dong Ha Kim was found Thursday in the Atlantic Ocean off Amagansett, about a half-mile east of where he was last seen swimming with friends near a Napeague resort at midday Tuesday. He was 23 and lived in Brooklyn.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Rip Current, Southeast Suffolk | 2020-08-18 | 23 | Male | In Water | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2020Every state in 2020This day in weather historyWarnings in New York, August 2020
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: 917898.