186 FNUS74 KMOB 201029 FWSMOB Spot Forecast for BSE15...USFA National Weather Service Mobile AL 529 AM CDT Fri Apr 20 2018 Forecast is based on ignition time of 0600 CDT on April 20. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION...Large surface high dominates from the Great Lakes southward to the Gulf coast today. The southern portion of the high pivots eastward to the southeast and Mid Atlantic through the day Saturday. A mixed layer northeast flow today trends more east to southeast on Saturday with daily dispersion being good. Rain free weather continues into the first part of the weekend, then a marked increase in rain chances by Sunday as a wave of frontal low pressure advances slowly eastward over the deep south. Fog potential and other remarks...Fog not expected. .TODAY... Sky/weather.........Sunny (0-10 percent). Chance of pcpn......0 percent. LAL.................No Tstms. Max temperature.....Around 74. Min humidity........35 percent. Wind (20 ft)........North to northeast early, becoming east winds 5 to 8 mph. Mixing height.......Increasing to 5200-5400 ft AGL. Mixing height (m)...Increasing to 1585-1646 meters AGL. Transport winds.....North to northeast, becoming east 10 to 15 mph. Transport winds m/s.North to northeast, becoming east 4 to 7 meters/second. Dispersion index....Increasing to 62. LVORI...............Becoming 1. Stability class.....2. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........6 4 3 3 3 2 2 2 2 3 3 3 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............45 47 50 55 60 64 66 69 71 73 74 73 RH..............86 76 68 59 51 45 43 39 38 35 35 37 20 FT wind dir..NE N NE NE E E E E E E E E 20 FT wind spd..5 5 6 7 7 7 7 6 6 6 6 6 20 FT wind gust.6 6 8 10 11 10 10 10 10 10 10 8 Mix hgt (kft)...0.8 0.8 1.6 2.4 3.1 3.7 4.2 4.7 4.9 5.2 5.4 5.4 Mix hgt (km)....0.2 0.2 0.5 0.7 0.9 1.1 1.3 1.4 1.5 1.6 1.6 1.6 Transp wind dir.N NE NE E E E E E E E E E Transp wind spd.10 10 12 14 15 14 13 12 12 12 12 10 Trans wind dir..N NE NE E E E E E E E E E Trans spd (m/s).4 4 5 6 7 6 6 5 5 5 5 4 Dispersion idx..5 12 26 39 49 50 50 53 53 53 55 62 LVORI...........5 4 3 1 1 1 1 1 1 1 1 1 .TONIGHT... Sky/weather.........Mostly clear (5-15 percent). Chance of pcpn......0 percent. LAL.................No Tstms. Min temperature.....Around 51. Max humidity........86 percent. Wind (20 ft)........East winds around 5 mph early in the evening becoming light. Mixing height.......Decreasing to 500-800 ft AGL. Mixing height (m)...Decreasing to 152-244 meters AGL early in the evening. Transport winds.....East 8 to 12 mph. Transport winds m/s.East 4 to 5 meters/second. Dispersion index....Decreasing to around 4. LVORI...............Increasing to around 4. Stability class.....4. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........4 5 5 6 6 7 8 8 11 15 17 19 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............71 68 64 60 57 55 54 54 53 53 52 51 RH..............41 45 52 60 67 69 71 71 74 77 83 86 20 FT wind dir..E E E E E E E E E E E E 20 FT wind spd..5 4 3 3 3 3 4 4 4 4 4 4 20 FT wind gust.6 6 5 4 4 4 5 6 6 6 6 6 Mix hgt (kft)...5.4 3.5 0.8 0.8 0.8 0.7 0.7 0.7 0.7 0.6 0.5 0.6 Mix hgt (km)....1.6 1.1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 Transp wind dir.E E E E E E E E E E E E Transp wind spd.10 9 9 8 8 8 9 10 10 9 10 12 Trans wind dir..E E E E E E E E E E E E Trans spd (m/s).4 4 4 4 4 4 4 4 4 4 4 5 Dispersion idx..62 4 4 4 4 4 4 4 4 4 4 5 LVORI...........1 2 2 3 3 3 3 3 3 4 5 5 .SATURDAY... Sky/weather.........Mostly sunny (40-50 percent). Chance of pcpn......10 percent. LAL.................No Tstms. Max temperature.....Around 77. Min humidity........42 percent. Wind (20 ft)........East winds 5 to 8 mph. Mixing height.......Increasing to 4800-5500 ft AGL. Mixing height (m)...Increasing to 1463-1676 meters AGL. Transport winds.....East becoming southeast 13 to 20 mph. Transport winds m/s.East becoming southeast 6 to 9 meters/second. Dispersion index....Increasing to around 63 late morning. LVORI...............Decreasing to 1. Stability class.....2. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........24 26 29 35 38 41 47 50 54 62 65 67 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 10 10 10 10 10 10 10 10 10 10 10 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............52 53 57 61 66 70 73 75 77 77 77 75 RH..............86 83 72 62 54 49 46 45 42 43 43 48 20 FT wind dir..E E E E E E E E E E E E 20 FT wind spd..5 5 6 6 7 7 7 7 7 7 6 6 20 FT wind gust.6 6 7 10 10 11 11 10 10 10 10 10 Mix hgt (kft)...0.7 0.7 1.4 2.1 2.8 3.5 4.2 4.8 5.0 5.3 5.5 5.5 Mix hgt (km)....0.2 0.2 0.4 0.6 0.9 1.1 1.3 1.5 1.5 1.6 1.7 1.7 Transp wind dir.E E E E E E E E SE SE SE E Transp wind spd.13 14 16 18 20 18 17 16 15 14 13 13 Trans wind dir..E E E E E E E E SE SE SE E Trans spd (m/s).6 6 7 8 9 8 8 7 7 6 6 6 Dispersion idx..5 15 28 45 57 62 63 61 54 52 44 38 LVORI...........5 4 3 1 1 1 1 1 1 1 1 1 $$ Forecaster...10 Requested by...Kevin Mock Type of request...PRESCRIBED .TAG 1807101.0/MOB .DELDT 04/20/18 .EMAIL josephkmock@fs.fed.us