FNUS74 KLIX 181801 FWSLIX Spot Forecast for Grand Isle Block 59 Release INLAND...NOAA National Weather Service New Orleans LA 101 PM CDT Mon May 18 2026 If conditions become unrepresentative, contact the National Weather Service. We can be reached at (985) 649-0357 if you have questions or concerns with this forecast. .DISCUSSION... Onshore flow will persist as high pressure remains anchored over the western Atlantic. As moisture increases across the region, the chance of daily showers and storms will gradually increase, with the best chances later in the week as a weak front approaches the area. Some storms will be capable of producing locally hazardous winds and waves. .REST OF TODAY... Sky/weather.........Mostly sunny (35-45 percent). Chance of pcpn......0 percent. Max temperature.....Around 81. Min humidity........91 percent. Max apparent temp...89. Surface winds (kts).Southeast winds 15 to 16 knots. Transport winds.....Southeast 18 to 21 mph. Transport winds m/s.Southeast 8 to 9 meters/second. Wave height.........1 foot. Wave period.........2 SECONDS. CEILING (KFT).......14 decreasing to 2.5-3.5 late in the afternoon. Wind (20 ft)........Southeast winds 16 to 17 mph. TIME (CDT) 2PM 3PM 4PM 5PM Sky (%).........40 43 44 42 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 Temp............81 81 81 81 RH..............92 92 91 91 Aparnt tmp (F)..89 89 89 89 20 FT wind dir..ESE ESE ESE ESE 20 FT wind spd..17 17 17 18 20 FT wind gust.21 21 21 22 SFC wnd dir.....ESE ESE ESE ESE SFC wnd spd kts.15 15 15 16 SFC wnd gst.....21 21 21 22 Transp wind dir.SE SE ESE SE Transp wind spd.18 20 21 21 Trans wind dir..SE SE ESE SE Trans spd (m/s).8 9 9 9 Wave period (s).2 2 2 2 Wave height (ft)1 1 1 1 Ceiling (kft)...14 2.7 3.5 3.5 .TONIGHT... Sky/weather.........Partly cloudy (25-35 percent) then becoming mostly cloudy (60-70 percent). Chance of pcpn......10 percent. Min temperature.....Around 81. Max humidity........94 percent. Max apparent temp...91. Surface winds (kts).Southeast winds 15 to 18 knots. Transport winds.....Southeast 18 to 22 mph. Transport winds m/s.Southeast 8 to 10 meters/second. Wave height.........1 foot. Wave period.........2 SECONDS. CEILING (KFT).......25 decreasing to 4.5. Wind (20 ft)........Southeast winds 16 to 17 mph. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........37 26 21 20 33 63 55 72 67 62 63 54 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 10 10 10 10 10 10 0 0 0 0 0 Temp............81 81 81 81 81 82 81 82 82 82 82 82 RH..............91 91 94 94 91 88 91 88 88 88 88 88 Aparnt tmp (F)..89 89 90 90 89 91 89 91 91 91 91 91 20 FT wind dir..ESE SE SE SE SE SE SE SE SE SE SE SE 20 FT wind spd..18 20 21 20 21 20 21 20 18 18 17 17 20 FT wind gust.22 24 24 24 24 24 24 23 23 22 21 21 SFC wnd dir.....ESE SE SE SE SE SE SE SE SE SE SE SE SFC wnd spd kts.16 17 18 17 18 17 18 17 16 16 15 15 SFC wnd gst.....22 24 24 24 24 24 24 23 23 22 21 21 Transp wind dir.SE SE SE SE SE SE SE SE SE SE SE SE Transp wind spd.22 21 22 21 21 22 22 21 21 20 18 18 Trans wind dir..SE SE SE SE SE SE SE SE SE SE SE SE Trans spd (m/s).10 9 10 9 9 10 10 9 9 9 8 8 Wave period (s).2 2 2 2 2 2 2 2 2 2 2 2 Waveheight (ft)1 1 1 1 1 1 1 1 1 1 1 1 Ceiling (kft)...25 25 25 25 25 25 25 25 19 13 5.8 4.5 .TUESDAY... Sky/weather.........Mostly sunny (45-55 percent). Chance of pcpn......10 percent. Max temperature.....Around 81. Min humidity........88 percent. Max apparent temp...91. Surface winds (kts).Southeast winds 12 to 15 knots. Transport winds.....Southeast 17 to 20 mph. Transport winds m/s.Southeast 8 to 9 meters/second. Wave height.........1 foot. Wave period.........2 SECONDS. CEILING (KFT).......4.5 decreasing to 2.2 in the late morning then increasing to 3.1 late in the afternoon. Wind (20 ft)........Southeast winds 15 to 16 mph. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........62 61 41 51 58 39 38 45 58 41 44 38 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 10 10 10 0 10 10 0 0 Temp............81 82 81 81 81 80 80 80 80 80 80 80 RH..............91 88 88 88 88 91 91 91 94 94 91 91 Aparnt tmp (F)..89 91 88 88 88 87 87 87 87 87 87 87 20 FT wind dir..SE SE SE SE SE SE SE SE SE SE SE SE 20 FT wind spd..17 17 17 15 15 17 14 15 16 16 16 15 20 FT wind gust.21 22 21 20 20 21 18 18 20 20 21 20 SFC wnd dir.....SE SE SE SE SE SE SE SE SE SE SE SE SFC wnd spd kts.15 15 15 13 13 15 12 13 14 14 14 13 SFC wnd gst.....21 22 21 20 20 21 18 18 20 20 21 20 Transp wind dir.SE SE SE SE SE SE SE ESE SE ESE SE SE Transp wind spd.18 18 18 20 18 18 20 17 18 18 18 18 Trans wind dir..SE SE SE SE SE SE SE ESE SE ESE SE SE Trans spd (m/s).8 8 8 9 8 8 9 8 8 8 8 8 Wave period (s).2 2 2 2 2 2 2 2 2 2 2 2 Wave height (ft)1 1 1 1 1 1 1 1 1 1 1 1 Ceiling (kft)...4.5 2.2 2.2 2.2 2.2 2.7 2.7 2.2 2.6 3.1 3.5 3.1 .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY... Partly cloudy. Slight chance of showers. Lows around 80. Highs in the lower 80s. Southeast winds around 12 mph. .THURSDAY... Partly cloudy. Slight chance of showers. Lows around 80. Highs in the lower 80s. Southeast winds around 10 mph. .FRIDAY... Mostly cloudy. Chance of showers and thunderstorms. Lows in the lower 80s. Highs in the lower 80s. South winds around 13 mph. .SATURDAY... Mostly cloudy. Chance of showers and thunderstorms. Lows in the lower 80s. Highs in the lower 80s. .SUNDAY... Mostly cloudy. Chance of showers and thunderstorms. Lows around 80. Highs in the lower 80s. $$ Forecaster...NWS NEW ORLEANS Requested by...Brandi Todd Type of request...HAZMAT .TAG 2613743.5/LIX .DELDT 05/18/26 .FormatterVersion 2.0.0 .EMAIL apardo@responsegroupinc.com,peter.lebel@noaa.gov,rlozada@responsegroup.com,sr-lix.forecasters@noaa.gov,rcdauterive@loopllc.com,Brandi.Todd@noaa.gov,jsilva@responsegroupinc.com,vcarreiro@responsegroupinc.com,nwcopeland@loopllc.com,jhellickson@responsegroupinc.com,elyons@ampol.net,demaskey@cleangulfassoc.com