10/21/2024
WT Staff
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October 21, 2024 updated 222 pm EDT
NWS: Tropical Storm Oscar brings flooding to east Cuba
WT HAB Tracker from the satellite monitoring program of the NOAA National Centers for Coastal Ocean Science(NCCOS) and NYS DEC
New York
Active bluegreen blooms are down to forty-one Monday, down from 61 Friday. Reports made prior to Oct 6 have moved into the archive file for the season, that set of records numbering 1956, the official total including active and archived HAB incidents now topping 2000 for 2024. Bradley Brook Reservoir, Song Lake and Summitt Lake are back on the active list. Our impacted water body list is in the process to roll over to the archive report for the season, here.
The latest satellite image of Lake Champlain was captured Oct 20, a partially cloud obscured view with no HAB activity noted in cloud breaks in Lake Champlain. Once again, Lake Carmi appears to have widespread HAB around 600 thousand cells per ml. See the NCCOS color image of Lake Champlain here.
Streamflow Situation from the USGS network of streamflow gauges
Sunny and clear across New York State today, high 73 upstate, 78 in the city with a mixed bag of streamflow results to start the work week. Mostly normal stream levels are recorded in the west with increasing number of stations reporting below seasonal to much below normal, including two low flows. See brown tag on the map to the left for a record low flow for Raquette River as measured at South Colton in the northeast drainage area, St. Lawrence River watershed.
West NY is unrated on the drought map Monday with the exception of Lake Ontario west section, Niagara, Orleans and west Monroe sticking with the below normal rating. For the northeast flowing watersheds, a strip of the St.Lawrence River watershed along the Raquette River channel has fallen to below normal rating, a record low flow recorded here for this date. Lake Champlain watershed remains below normal in north Washington and east Essex Counties. Part of the Delaware River watershed appears on the drought map Monday, along with Ramapo River watershed, all below normal. Long Island Sound watershed remains below normal through south Westchester and Richmond Counties as last week.
As of this report, there are no flood events registering in the network, no extreme high (99th percentile) flows.
National Hurricane Center Bulletin 9A Tropical Storm Oscar 9A issued 800 am Mon Oct 21
HEAVY RAINFALL CONTINUING OVER EASTERN CUBA
At 800 AM EDT (1200 UTC), the center of Tropical Storm Oscar was located about 5 miles W OF Guantanamo Cuba at maximum sustained winds of 45 mph, moving toward the west near 2 mph. According to Forecaster Pasche, a turn to the northwest and north is expected later today, followed by a faster
northeastward motion on Tuesday and Wednesday. On the forecast track, the center of Oscar is expected to continue moving across
eastern Cuba through this afternoon, then emerge off the northern coast of Cuba late today or tonight and move near the southeastern
and central Bahamas on Tuesday.
NWS News: Comprehensive Event Review of Destructive Connecticut and Long Island Flash Flooding
A destructive flash flooding event occurred across portions of southwest Connecticut on August 18, 2024 and across portions of Long Island during the early morning of August 19, 2024. Significant flash flooding also occurred across portions of northeast New Jersey during the evening of August 18, 2024. A widespread 1 to 3 inches of rain fell across the region, but the areas hardest hit in southwest Connecticut received 5-9 inches of rain with isolated amounts 10-13 inches in Oxford, Monroe, Sandy Hook, and Newtown. In northwest Suffolk County, up to 10 inches of rain fell, with the New York State Mesonet site at Stony Brook measuring 9.40 inches of rain. Flash Flood Emergencies were issued across portions southwest Connecticut and northwest Suffolk County on Long Island.
The following are some of the major impacts that occurred in Long Island, but may not cover the full scope of the flooding impacts:
- All of the water from Mill Pond in Stony Brook was pushed out into Long island sound and surrounding waterways. Fire crews evacuated several homes nearby out of precaution.
- One home partially collapsed on the corner of Harbor Road and Main Street, but the home was vacant.
- The Nissequoque River dam broke around 9:30 am EDT August 19, 2024 causing the entire Stump Pond at Blydenburgh Park in Smithtown to empty into the river. Homes and nearby streets were flooded.
- Two people were trapped on the second floor of their home near the head of the Nissequoque River and had to be rescued by the Smithtown Fire Department.
- The Smithtown Library on Main Street in Smithtown suffered significant damage from flooding with damage to many historic books.
- The Port Jefferson firehouse was flooded and had to be evacuated.
- A small mudslide occurred at the Bell Harbour Mews Apartments in Port Jefferson.
- Several water rescues had to be performed in Huntington, Commack, Smithtown, Nesconset, Saint James, Lake Ronkonkoma, Coram, Port Jefferson, Stony Brook, Setauket, and Miller Place.
- Multiple homes had basement flooding within Commack, Smithtown, Saint James Centereach, Setauket, Selden, Coram, Port Jefferson, and Rocky Point.
- The Nissequoque River flooding impacted service on the Long Island Rail Road Port Jefferson Branch.
- The Long Island Expressway (I-495) westbound had to be closed between Exit 51 and Exit 52 near Dix Hills due to flooding. NY State had to be called to assist with pumping water.
There were also flash flooding impacts across several major roads in highly urbanized northeast New Jersey with multiple rescues having to be performed. See the Storm Reports Section for a map of some of the impacts received from the event.
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