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8/18/2024
WT Staff
 August 18, 2024 1238 pm CDT
Broussard, Colfax under BWAs as heat index goes to 120
URGENT Weather Message issued 944 am August 18 by NWS New Orleans
EXCESSIVE HEAT WARNING IN EFFECT until 7 PM CDT tonight
Dangerously hot conditions with heat index values up to 120 expected for portions of southeast Louisiana and southern Mississippi.
Heat related illnesses increase significantly during extreme heat and high humidity events.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Heat stroke is an emergency, call 9-1-1
Impacting Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington-
Iberville-West Baton Rouge-East Baton Rouge-Assumption-St. James-
St. John The Baptist-Upper Lafourche-St. Charles-Upper St.
Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Coastal
Jefferson Parish-Lower Plaquemines-Lower St. Bernard-Northern
Tangipahoa-Southeast St. Tammany-Western Orleans-Eastern Orleans-
Northern St. Tammany-Southwestern St. Tammany-Central Tangipahoa-
Lower Tangipahoa-Northern Livingston-Southern Livingston-Western
Ascension-Eastern Ascension-Upper Jefferson-Lower Jefferson-Upper
Plaquemines-Central Plaquemines Parishes
Safe Drinking Water Advisories
Grant Parish: Town of Colfax is under a system-wide BWA Sunday until further notice. Customers are asked to conserve water as much as possible.
Lafayette Parish: City of Broussard came under BWA Saturday August 17 following a water main break. Le Triomphe subdivision is impacted by the water service disruption and resulting boil water order until further notice.
WT HAB Tracker from the satellite monitoring program of the NOAA National Centers for Coastal Ocean Science(NCCOS) and State sources where available
Louisiana: The latest upload from the NCCOS was captured August 17 at low wind speed 3.3 mph. This image is clear, very similar to the prior image, Lac des Allemands and Bayou Fortier remain at the extreme high concentration, 4 to 5 million cells per 100 ml starting from the west bay and north shorelines, respectively. Lakes Field has also escalated in bluegreen concentration, up to 4 million cells per 100 ml. Lake Pontchartrain and Maurepas are entirely visible in this image with no cloud cover; there is no HAB activity observed on either water body. Check out the latest satellite image from NCCOS here.
New York
The latest image of Lake Champlain was captured August 17, mostly cloud obscured, the northmost shoreline piece of Baie Missisquoi HAB is visible between clouds at over 2 million cells per 100 ml. The last fully clear image was captured August 14 revealing the entirety of northeast Baie Missisquoi, brimming with bluegreen algae at extreme high concentration 1 to 3 million cells per 100 ml. The south extent is in the channel from North Hero Island to Isle la Motte, at 900 thousand cells per 100 ml concentration. St Albans Bay HAB is partially cloud obscured in the Aug 14 image, the inner shoreline edge offering 1 million cells per 100 ml. Lake Carmi appears clear with no HAB activity; Shelburne Pond was blazing away at 2 million plus cells concentration in Vermont. See our latest report here.
One hundred and fifty-two HABs are confirmed in New York Sunday afternoon, down from up from 168 yesterday at this time. No new reports have been confirmed so far today, several reports made prior to August 4 have been retired to the archives overnight. First HABs of the season were confirmed yesterday for Hemlock Lake, Barnum Pond and Lake Tonetta. See the impacted water bodies list here.
Lake Erie west basin
The latest image from NCCOS was captured August 17 at high wind speed 17.4 mph, mostly cloud obscured. Lake Erie HAB is showing between clouds around 2 to 3 nautical miles off shore of Maumee Bay State Park with ten to twelve miles of the open water bluegreen at concentration as high as 2 million at Cedar Point tapering off to 1 million for the majority of the area, down to 300 thoudand around the edges of the mass. A prior image captured Aug 15 reveals North Maumee Bay bluegreen at 600 thousand cells per 100 ml extending north past Monroe, Michigan. The Aug 14 image was completely clear and taken at a lower wind speed, revealing the full extent of the HAB with extreme high concentration hot spots up to 6 million cells per 100 ml, see the satellite image here.
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