FNUS72 KILM 191043 FWSILM Spot Forecast for Sandy Island RX-1...The Nature Conservancy National Weather Service Wilmington NC 643 AM EDT Tue May 19 2026 Forecast is based on ignition time of 0900 EDT on May 19. If conditions become unrepresentative...or if you have questions or concerns about this forecast...contact the National Weather Service in Wilmington at 910-762-1374. .DISCUSSION... Light and variable to calm winds this morning will increase between 0900-1000. Winds from the south to southwest through late morning before shifting to out of the southeast following the passage of the sea breeze. Winds will increase after the sea breeze passes. No rain chances today or tonight. Light to calm winds overnight will once again lead to development of fog. Fog potential for tonight is High. .REST OF TODAY... Sky/weather.........Sunny (5-15 percent). Chance of thunder...0 percent. Max temperature.....Around 83. Min humidity........58 percent. Wind (20 ft)........Light winds becoming southeast 7 to 9 mph around midday. Max mixing hgt......2700 ft AGL. Transport winds.....South 7 to 13 mph. Max vent rate.......Poor (29533 mph-ft). Max LVORI...........3. Max ADI.............37. TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........16 11 5 4 2 0 0 0 0 Weather cov..... Weather type.... Tstm cov........ Chc of thdr (%).0 0 0 0 0 0 0 0 0 Temp............75 77 80 81 82 82 81 81 81 RH..............81 75 70 65 58 63 65 66 67 20 FT wind dir..N S S SE SE SE S S SE 20 FT wind spd..0 2 3 8 9 8 8 9 9 20 FT wind gust.1 3 6 12 12 12 12 13 13 Mix hgt (kft)...1.9 2.4 2.7 2.7 2.6 2.6 2.4 2.3 2.0 Transp wind dir.S S S SE SE SE SE S S Transp wind spd.7 7 7 8 9 10 10 13 13 Stability.......A A A B B B B B B LVORI...........3 3 3 3 2 1 1 1 3 ADI.............17 22 24 27 30 33 32 37 32 Vrate mph-ft/1K.13 17 19 22 24 26 25 30 25 Ventrate Cat....PR PR PR PR PR PR PR PR PR Sfc pres (in)...024 024 026 026 026 024 024 024 018 .TONIGHT... Sky/weather.........Mostly clear (15-25 percent). Patchy fog early in the morning. Chance of thunder...0 percent. Min temperature.....Around 66. Max humidity........99 percent. Wind (20 ft)........South winds 6 to 9 mph early in the evening becoming light. Min mixing hgt......400 ft AGL. Transport winds.....South 6 to 13 mph. Min vent rate.......Poor (2457 mph-ft). Max LVORI...........9. Min ADI.............3. TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........1 2 3 3 4 5 8 12 15 22 28 35 Weather cov..... PTY Weather type.... FOG Tstm cov........ Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............79 77 74 73 71 70 69 69 68 67 67 66 RH..............70 75 81 86 88 90 92 94 95 96 97 98 20 FT wind dir..S S S S S S S S S S SW SW 20 FT wind spd..9 8 7 6 3 3 3 3 3 3 2 2 20 FT wind gust.13 12 10 9 6 6 6 5 4 4 3 Mix hgt (kft)...1.8 1.6 1.0 0.4 0.5 0.4 0.4 0.4 0.4 0.5 0.4 0.4 Transp wind dir.S S S S S S S S S S S SW Transp wind spd.13 13 12 12 10 10 9 9 8 8 7 6 Stability.......E E E F F F F F F F F F LVORI...........3 3 4 5 5 6 6 6 8 8 8 9 ADI.............8 8 8 5 5 5 4 4 4 4 3 3 Vrate mph-ft/1K.23 21 12 5 5 5 4 4 4 4 3 2 Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR Sfc pres (in)...018 018 019 019 019 019 019 019 014 014 014 016 .WEDNESDAY... Sky/weather.........Sunny (15-25 percent). Chance of thunder...0 percent. Max temperature.....Around 85. Min humidity........61 percent. Wind (20 ft)........Light winds becoming southeast 5 to 8 mph in the afternoon. Max mixing hgt......3500 ft AGL. Transport winds.....Southwest 5 to 7 mph shifting to the south 8 to 14 mph in the afternoon. Max vent rate.......Marginal (35537 mph-ft). Max LVORI...........9. Max ADI.............44. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........34 33 27 13 4 4 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Chc of thdr (%).0 0 0 0 0 0 Temp............66 70 77 82 84 84 RH..............99 93 76 66 62 61 20 ft wind......NW 2 SW 1 N 0 SE 5 SE 7 S 8 20 ft wind gust. 3 7 10 11 Mix hgt (ft)....400 600 2500 3400 3500 2700 Transport wind..SW 6 SW 6 SW 7 S 7 S 9 S 13 Stability.......A A A A B B LVORI...........9 6 3 3 1 1 ADI.............6 6 22 30 39 42 Vrate mph-ft/1K.2 3 17 23 32 34 Ventrate Cat....POOR POOR POOR POOR POOR POOR Sfc pres (in)...30.16 30.18 30.18 30.16 30.10 30.10 $$ Forecaster...Lebo Requested by...Chelsea MacKenzie Type of request...PRESCRIBED .TAG 2613984.0/ILM .DELDT 05/19/26 .FormatterVersion 2.0.0 .EMAIL c.f.mackenzie@tnc.org