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WT Staff

Wednesday May 22, 2024
NWS: Thunderstorms upstate

May 22, 2024 updated 216 pm EDT

Hazardous Weather statement issued by NWS for Albany NY 411 am Wednesday, May 22, 24
There is a chance for thunderstorms late this afternoon into tonight, especially for western parts of the area. There is marginal risk for severe thunderstorms, with gusty winds and hail being the main threats.

Additional thunderstorms are possible Thursday afternoon, especially for locations south and east of the Capital Region. Portions of the Mid Hudson Valley and southwestern New England remain in a marginal risk for severe weather, with damaging winds and hail being the primary threats. There is also a chance for thunderstorms during the afternoon or evening hours on Saturday and again on Monday.

Spotters are encouraged to pass along any reports of hail or wind damage to the National Weather Service in Albany via phone, email or social media.

Impacting Northern Herkimer-Hamilton-Southern Herkimer-Southern Fulton-Montgomery-Northern Saratoga-Northern Warren-Northern Washington-Schoharie-Western Schenectady-Eastern Schenectady-Southern Saratoga-Western Albany-Eastern Albany-Western Rensselaer-Eastern Rensselaer-Western Greene-Eastern Greene- Western Columbia-Eastern Columbia-Western Ulster-Eastern Ulster-Western Dutchess-Eastern Dutchess-Northern Fulton-Southeast Warren Counties Counties.

Current Streamflow Situation - NYS Drought Map
The streamflow map for NYS remains much as reported yesterday with much below seasonal normal values recorded through the west interior in an arc up into the north interior. Streamflows through Black River and St. Lawrence River watersheds show predominantly below the 5th percentile with very few stations recording the seasonal normal values. The Raquette River remains at severe drought with Oswegatchie River channel rated moderate drought. Central St. Lawrence County has backed off on the drought map, the area lying between Raquette River and Oswegatchie River is rated below normal, no longer in moderate drought depth. The remainder of Black River, Lake Ontario minor tributaries east section, St. Lawrence River and Upper Hudson River watershed remain below normal. The only part of west NY on the drought map Wednesday is the west third of Chautauqua County in the Niagara River - Lake Erie watershed.

Above seasonal normal is the highest streamflow rating observed Wednesday. A couple of these occur in Lower Genesee River watershed, Lake Champlain watershed and on Long Island. One station records extreme low flow, Swan River at East Patchogue on Long Island.

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

As of this report, sixty-eight sites record flooding on the USGS network through the USA with eighteen happening in WT coverage area. The nation's most common disaster is recorded through south Georgia, presenting a sample of nine stations recording flooding. Louisiana has dropped one flood event this morning, currently recorded in flood stage at nine sites in the network.

Louisiana is down one flood incident in Region 5 watershed as expected, Bayou Nezpique got back in line with the natural channel near Basile at LA 190 just ahead of the noon hour today. South in Region 5, Mermentau River maintains six inches over flood stage at Mermentau. Region 1 watershed's Bayou Bodcau continues to recede in the face of a severe weather advisory calling for locally heavy downpours this evening and overnight. Bayou Bodcau picks up rainfall shed from 668 square miles of east Bossier Parish and southwest Arkansas, where the weather alert applies. Bayou Bodcau reached a peak flow ten feet above the basin on April 21, has been steadily receding since, currently less than two feet over the basin. Flooding in Region 4 continues at the Texas border with Sabine River flooding near Bon Wier, TX and downstream near Ruliff, TX. Calcasieu River continues to run more than a foot over the channel in three monitored locations midweek: in the upper channel near Glenmora, downstream near Oberlin and near Kinder. In Region 7, Pearl River is up three inches overnight, currently a foot and a half above flood stage near Bogalusa, downstream less than a foot over at the Town of Pearl River. See black tags indicating flow volume and gauge height, blue tags for 99th percentile flows updated daily here.

Georgia: Flooding has shifted downstream in the Atlantic Ocean basin. Satilla River breached flood stage at Atkinson Tuesday afternoon, currently running seven to eight inches above the channel and rising. Flooding continues upstream on Satilla River at GA158 and at another station downstream near Waycross. Tributaries Alabaha, Little Satilla continue to flood at GA203 near Blackshear and near Offerman, respectively. Savannah River is receding near Cylo, running a foot and three inches above the channel. Gulf Basin flooding is tapering off midweek. Ochlockonee River flooding knocked off near Thomasville Tuesday afternoon while downstream at Concord the flow peaked in moderate flood stage. As of this report, Ochlockonee River is coming out of moderate flood stage, still two feet above the channel. Withlachoochee River continues flooding, still three feet over the channel at Skipper Bridge Rd near Bemiss, close to five feet over the channel and at US84 near Quitman. See black tags indicating 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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