248 FNUS72 KMLB 190838 FWSMLB Spot Forecast for SFWMD - LRUS - 10,11...South Florida Water Management District National Weather Service Melbourne FL 438 AM EDT Tue Aug 19 2025 Forecast is based on ignition time of 0600 EDT on August 19. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION...North to Northeast surface and transport winds will produce Very Good dispersion this afternoon. Scattered afternoon showers and storms mainly after 2 pm. .TODAY... Sky/weather.........Partly Sunny. Chance of showers and Slight chance of thunderstorms in the afternoon. Chance of pcpn......50 percent. Max temperature.....Around 93. Min humidity........58 percent. Wind (20 ft)........Light winds becoming northeast 5 to 10 mph. Gusty and erratic winds expected near thunderstorms in the afternoon. Mixing height.......1500 ft AGL increasing to 4500 ft AGL. Transport winds.....Northeast 7 to 13 mph. Dispersion index....4 increasing to 57. LVORI...............7 decreasing to 1. TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........13 12 12 10 9 10 21 32 28 30 40 33 Weather cov..... SCH SCH CHC CHC CHC CHC Weather type.... RW RW RW RW RW RW Tstm cov........ SCH SCH SCH SCH SCH SCH Chc of pcpn (%).0 0 10 0 10 10 20 20 40 50 50 40 Temp............77 76 78 83 85 87 89 90 90 91 89 90 RH..............94 97 94 80 75 70 64 62 60 58 61 60 20 FT wind dir..N N NE NE NE NE NE NE NE NE NE NE 20 FT wind spd..3 5 6 6 7 8 8 8 9 10 10 10 20 FT wind gust.7 7 8 10 12 13 14 15 13 15 15 15 Mix hgt (kft)...0.4 0.4 0.6 1.5 2.4 3.4 3.9 4.2 4.4 4.5 3.5 3.8 Transp wind dir.NE NE NE NE NE NE NE N N NE NE NE Transp wind spd.7 7 8 9 9 10 12 10 10 12 12 13 Dispersion idx..3 3 5 18 29 42 46 49 57 59 55 57 LVORI...........7 7 6 3 3 3 1 1 1 1 1 1 .TONIGHT... Sky/weather.........Partly cloudy then becoming clear. Chance of showers and slight chance of thunderstorms early in the evening. Chance of pcpn......30 percent. Min temperature.....Around 75. Max humidity........97 percent. Wind (20 ft)........Northeast winds 5 to 10 mph shifting to the northwest 5 to 6 mph overnight. Gusty and erratic winds expected near thunderstorms early in the evening. Mixing height.......1800 ft AGL decreasing to 400 ft AGL early in the evening. Transport winds.....North 8 to 14 mph. Dispersion index....52 decreasing to 5. LVORI...............1 increasing to 6. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........30 21 5 1 2 2 Weather cov.....CHANCE Weather type....RNSHWR NONE NONE NONE NONE NONE Tstm cov........S CHC Chc of pcpn (%).30 10 10 0 0 0 Temp............88 83 79 79 77 76 RH..............63 74 85 88 90 94 20 ft wind......NE 10 NE 7 NE 6 N 6 N 5 NW 6 20 ft wind gust.15 14 10 9 8 9 Mix hgt (ft)....3200 1000 700 400 400 400 Transport wind..NE 14 NE 12 N 10 N 8 N 9 N 9 Dispersion idx..52 6 5 4 4 5 LVORI...........1 3 5 6 6 6 .WEDNESDAY... Sky/weather.........Partly Sunny. Chance of showers and thunderstorms late in the afternoon. Chance of pcpn......40 percent. Max temperature.....Around 94. Min humidity........56 percent. Wind (20 ft)........Northwest winds 6 to 9 mph. Gusty and erratic winds expected near thunderstorms late in the afternoon. Mixing height.......1800 ft AGL increasing to 5500 ft AGL. Transport winds.....North 8 to 14 mph. Dispersion index....5 increasing to 18 early in the morning, then increasing to 34 late in the morning increasing to 48 late in the morning increasing to 66 increasing to 71 early in the afternoon decreasing to 56 decreasing to 43 late in the afternoon. LVORI...............7 decreasing to 1. TIME (EDT) 6 AM 9 AM NOON 3 PM Sky (%).........2 7 13 20 Weather cov..... CHANCE Weather type....NONE NONE NONE RNSHWR Tstm cov........ CHANCE Chc of pcpn (%).0 10 10 40 Temp............76 82 90 91 RH..............94 82 60 56 20 FT wind......NW 6G10 N 8G13 NW 9G15 NW 9G16 Mix hgt (ft)....400 1800 4300 5100 Transport wind..N 8 N 13 N 14 N 10 Dispersion idx..5 34 65 60 LVORI...........6 3 1 1 $$ Forecaster...Kelly Requested by...David Schutt Type of request...PRESCRIBED .TAG 2520168.0/MLB .DELDT 08/19/25 .FormatterVersion 2.0.0 .EMAIL dschutt@sfwmd.gov