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WT Staff

Friday, June 14, 2024
NWS: Severe storms, heavy downpours could lead to flash flooding

June 14, 2024 910 am EDT

Hazardous Weather Outlook issued 339 am June 14 from National Weather Service forecast center in Binghamton
This Hazardous Weather Outlook is for Atlantic coastal waters, southern Connecticut, northeast New Jersey and southeast New York.

Showers and thunderstorms are expected to develop ahead of a cold front and move through the region this afternoon and evening. Some thunderstorms could be strong to severe, capable of producing gusty to damaging winds, large hail and brief heavy downpours. Localized flash flooding is possible.

Impacting Long Island Sound West of New Haven CT/Port Jefferson NY- New York Harbor-Sandy Hook NJ to Fire Island Inlet NY out 20 nm-Northern Fairfield-Northern New Haven-Southern Fairfield-Southern New Haven-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)-Northwest Suffolk-Northern Queens-Northern Nassau- Counties

Current Streamflow Situation
Much below streamflows values are filling in around the west side of the Catskills through the Schoharie Creek and tributaries of the Mohawk River Friday. Delaware, Ramapo and Lower Hudson Rivers watersheds are trending lower heading into the weekend as National Weather Service calls for showers later today. The highest flow Friday is a single station recorded above 75th percentile in Nassau County, Long Island Sound watershed. The lowest streamflows are on Ramapo River near Mahwah NJ and Swan River in Suffolk County. As of this report, there are no floods observed in the NYS network of streamflow monitors, no extreme high flows.

WT USA Flood Tracker provisional data from the network of USGS streamflow monitors

Thirty-two flood events are recorded on the national USGS network Friday, down from thirty-five Thursday. Another flooding has been rolled up in Louisiana overnight with Region 4 Calcasieu River retreating back into its channel near Glenmora around midnight. WT USA now tracking three reference floods events through the coverage area New York, Ohio, Georgia and Louisiana. At the writing of this report, all are occurring in Louisiana.

Louisiana: Sabine River flooding ended yesterday at Logansport leaving two monitored sites downstream on the west border Sabine River still over the channel, currently recorded four feet four inches over flood stage near Bon Wier and two feet nine inches over flood stage near Ruliff, rolling along between 40 and 50 thousand cubic feet per second. Bayou Bodcau Lake is still out of the basin by four feet. For more information on the flood trend in Louisiana, see black tags indicating flood flow volume and gauge height updated daily here.

As many drinking water facilities are supplied from surface water reservoirs, the streamflow situation is pertinent to both drinking water supply and quality. High flows can stir up sediment and cause turbidity in the reservoirs, requiring additional treatments to render the water potable. Low flow volume is linked to warmer temperatures in the reservoir and can be an issue for water quality where HABs are present. WT tracks streamflow trends with an eye to the impacts on drinking water supply and quality in each of the state's watersheds. Check the watershed layer on the map to see the direction of flow and streamflows that may be impacting drinking water today.

USGS Provisional Data Statement
Data are provisional and subject to revision until they have been thoroughly reviewed and received final approval. Current condition data relayed by satellite or other telemetry are automatically screened to not display improbable values until they can be verified.
Provisional data may be inaccurate due to instrument malfunctions or physical changes at the measurement site. Subsequent review based on field inspections and measurements may result in significant revisions to the data.
Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Information concerning the accuracy and appropriate uses of these data or concerning other hydrologic data may be obtained from the USGS.

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