@ FNUS76 KSGX 191345 FWSSGX Spot Forecast for Lake Matthews VMP...CAL FIRE National Weather Service San Diego CA 645 AM PDT Tue May 19 2026 Forecast is based on ignition time of 0000 PDT on May 20. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... A typical diurnal wind pattern this week with light winds at night and west to northwest seabreeze winds each afternoon. 20 foot gusts may reach 15-20 mph each afternoon. As flow turns back to weakly onshore, relative humidity should slowly increase through the week along with a deepening marine layer. Morning low clouds and fog may return starting Thursday. .REST OF TONIGHT... Sky/weather.........Clear (0-10 percent). Min temperature.....Around 57. Max humidity........47 percent. Eye level winds.....Light winds. Wind (20 ft)........ Slope/valley.......Light winds. Mixing height.......100 ft AGL. Transport winds.....Southeast 3 to 5 mph. TIME (PDT) MID 1AM 2AM 3AM 4AM 5AM Sky (%).........4 4 4 4 4 6 Weather cov..... Weather type.... Tstm cov........ Temp............63 62 60 58 58 57 RH..............39 41 44 45 46 47 20 FT wind dir..S S S SE SE SE 20 FT wind spd..3 3 3 2 2 1 20 FT wind gust.7 7 6 6 5 4 Eye lvl wnd dir.S S S SE SE SE Eye lvl wnd spd.2 2 2 1 1 1 Eye lvl wnd gst.5 5 5 4 4 3 .WEDNESDAY... Sky/weather.........Sunny (0-10 percent). Max temperature.....Around 84. Min humidity........18 percent. Eye level winds.....Light winds becoming west up to 6 mph with gusts to around 9 mph in the afternoon. Wind (20 ft)........ Slope/valley.......Light winds becoming west up to 12 mph with gusts to around 18 mph in the afternoon. Mixing height.......10200 ft AGL. Transport winds.....Southeast 1 to 3 mph shifting to the west around 14 mph late in the afternoon. TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........6 6 8 8 8 5 5 5 2 2 2 3 Weather cov..... Weather type.... Tstm cov........ Temp............58 60 63 69 73 77 80 81 82 83 82 81 RH..............47 44 40 32 26 22 19 18 18 18 21 23 20 FT wind dir..SE N SE E N N NW NW NW NW W W 20 FT wind spd..1 1 1 1 2 3 5 6 8 9 12 12 20 FT wind gust.2 2 2 4 6 7 10 11 13 15 18 18 Eye lvl wnd dir.SE SE SE E N N NW NW NW NW W W Eye lvl wnd spd.1 1 1 1 1 2 3 3 4 5 6 6 Eye lvl wnd gst. 2 3 4 5 6 7 8 9 9 .WEDNESDAY NIGHT... Sky/weather.........Mostly clear (15-30 percent). Min temperature.....Around 57. Max humidity........70 percent. Eye level winds.....West winds up to 5 mph with gusts to around 8 mph early in the evening becoming light. Wind (20 ft)........ Slope/valley.......West winds up to 9 mph with gusts to around 16 mph early in the evening becoming light. Mixing height.......100 ft AGL. Transport winds.....West 7 to 13 mph shifting to the southeast 2 to 5 mph in the late evening and overnight. TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........3 3 3 3 3 21 21 21 21 21 21 35 Weather cov..... Weather type.... Tstm cov........ Temp............80 76 72 69 67 64 62 61 60 58 57 57 RH..............25 28 32 37 41 45 49 52 55 59 62 70 20 FT wind dir..W NW NW NW N NE N N N N NE NE 20 FT wind spd..9 7 5 3 3 2 2 2 1 1 1 1 20 FT wind gust.16 12 9 7 6 6 6 5 5 5 4 4 Eye lvl wnd dir.W NW NW NW N NE N N N N NE NE Eye lvl wnd spd.5 4 3 2 2 1 1 1 1 1 1 1 Eye lvl wnd gst.8 6 5 4 3 3 3 3 3 3 2 2 .THURSDAY... Sky/weather.........Partly cloudy (30-40 percent) then becoming mostly sunny (0-10 percent). Patchy fog in the morning. Max temperature.....Around 81. Min humidity........32 percent. Eye level winds.....Light winds becoming northwest up to 7 mph with gusts to around 10 mph late in the morning. Wind (20 ft)........ Slope/valley.......Light winds becoming northwest 8 to 13 mph with gusts to around 20 mph in the afternoon. Mixing height.......5700 ft AGL. Transport winds.....Northeast around 1 mph shifting to the west 6 to 13 mph late in the morning. TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........37 37 37 37 37 7 7 7 7 7 7 4 Weather cov.....PTY PTY PTY PTY PTY Weather type....FOG FOG FOG FOG FOG Tstm cov........ Temp............58 59 62 66 70 74 77 78 79 80 80 78 RH..............64 61 56 49 42 37 34 33 33 32 32 33 20 FT wind dir..NE NE N N NW NW NW NW NW NW NW NW 20 FT wind spd..1 1 1 2 3 5 6 8 9 10 12 13 20 FT wind gust.4 4 5 6 6 8 11 13 15 18 20 20 Eye lvl wnd dir.NE NE N N NW NW NW NW NW NW NW NW Eye lvl wnd spd.1 1 1 1 2 3 3 4 5 5 6 7 Eye lvl wnd gst.2 2 3 3 3 4 6 7 8 9 10 10 $$ Forecaster...KYLE WHEELER Requested by...James Magana Type of request...PRESCRIBED .TAG 2614017.0/SGX .DELDT 05/19/26 .FormatterVersion 2.0.0 .EMAIL james.magana@fire.ca.gov