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WT Staff

Tuesday, July 9 2024
NWS: Heat Advisory extended

July 9, 2024 updated 701 am EDT

Heat Advisory issued by National Weather Service New York 335 am July 9

HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY...Heat index values up to 100 for Bronx, Kings (Brooklyn), New York (Manhattan), Northern Queens, Richmond (Staten Island), and Southern Queens Counties.

Hot temperatures and high humidity may cause heat illnesses.

New York City residents should call 3 1 1 to identify cooling center locations and obtain `Beat the Heat` safety tips. A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time.

Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don`t have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors.

To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location.

Heat stroke is an emergency! In cases of heat stroke call 9 1 1.

HAB Tracker satellite monitoring program of the NOAA National Centers for Coastal Ocean Science

WT follows the movement and growth of harmful algal blooms (HABs) as provided by the satellite monitoring program of the NCCOS for New York's Lake Champlain, Ohio's Lake Erie and Louisiana's Lake Pontchartrain and surrounding area. Interpretation of satellite images is best in clear conditions at wind speed less than 4 mph, where the appearance and extent of HABs is reliably matched to a color scale for concentration. HABs are known to produce algal toxins of concern for raw drinking water sources and recreational water bodies. Plan beach access to avoid HABs and consider carrying a rapid test kit to detect the toxin microcystins.

New York
Lake Champlain's Baie Missisquoi HAB is clearly visible in the latest satellite image from NCCOS dated Monday July 8, extending from north shore to the shore of Missisquoi National Wildlife Refuge on the US side of the border. This HAB appears to match the color scale for a concentration around 900 thousand cells per 100 ml standard sample in the south end, reaching an extreme high concentration 2 million cells per 100 ml along the north shore in Canada. A prior image captured Friday July 5 showed even higher concentration, 3 to 4 million cells per 100 ml. Sixty-two HABs are confirmed by NYS Department of Environmental Conservation by way of surface observation for interior NYS water bodies Tuesday morning, down from sixty-four Monday with two new water bodies added to the list impacted with HABs this season. Harlem Meer and Saratoga Lake have the first HABs of 2024 confirmed. Mill Pond in Suffolk County has been cleared of the HAB list. Bluegreen tags on the map to the right indicate water bodies with at least one confirmed HAB. A complete list with location descriptions is found here.

Louisiana: Southeast LA water bodies are captured in a wide angle pass by the Copernicus-Sentinel III satellite, catching Lake Pontchartrain to Black Bay in frame. The latest image was captured July 7 at a surface wind speed 2.3 mph. This latest image is partially cloud obscured, we see a very high concentration HAB 2 million cells per 100 ml south of Lake Palourde in the water between Bayou Shaffer and Avoca Island Canal. A clear image obtained July 3 at wind speed 5.8 mph offers a fairly clear view of most southeast LA water bodies. Lake Pontchartrain appears clear of HAB activity in the latest image taken Sunday. The latest HAB report for Louisiana is available here.

Ohio: Lake Erie west basin is captured by the NCCOS monitoring satellite, the latest upload taken July 8 at surface wind speed 4.6 mph. The image is partially cloud obscured, shows the massive HAB taking up residence from Toledo inner Maumee Bay approximately 17 nm up the Michigan shoreline and extending fifteen plus miles wide. The Maumee Bay HAB has reached deeper into the bay since the last image was captured July 7 at concentration 700 thousand cells per 100 ml water sample. The North Maumee Bay and Michigan bloom retain a hot spot of extreme high concentration south of Monroe near shore, around the 2 million cells per 100 ml sample. Sandusky Bay HAB appears unchanged in position and extent from the July 7 image at a slightly lower concentration by July 8, 700 thousand cells per 100 ml. The dispersed patch of open water HAB in the inner bay area now appears as a narrow band 800 thousand cells per 100 ml. Updates are in progress. The latest Ohio HAB report is available here.

See the North American drainage basin map here, scroll all the way down to see how surface water moves across the continent into the Pacific, Atlantic, Gulf of Mexico and Arctic Oceans. WT Media Group tells the story of water in three countries, Canada, USA and Mexico. See the drinking water advisories, hazardous spills, floods, drought and harmful algal blooms plotted on the maps, as the water flows. Check out the CrimeBox for historic prosecutions under the Clean Water Act, the Safe Drinking Water Act box for details on public drinking water facilities, interviews with the scientists and tech developers on the leading edge of clean water technology 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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