FNUS72 KJAX 110543 FWSJAX Spot Forecast for OSBS A-3a...University of Florida National Weather Service Jacksonville FL 1243 AM EST Thu Dec 11 2025 Forecast is based on ignition time of 0600 EST on December 11. If conditions become unrepresentative, contact the National Weather Service. Please contact our office at (904) 741-4370 if you have questions or concerns with this forecast. .DISCUSSION... Breezy northwest winds expected today in the wake of a cold front that will usher in a dry and cooler airmass. This afternoon, min RH values are forecast to drop to the lower 30 percent range, with potential for them to fall into the upper 20 percent range. Max dispersion will approach 50. Chilly tonight with lows in the 30s with some frost possible, and warming up to about 70 degrees for Friday afternoon and min RH in the lower 30s percent range. Much lower surface and transport winds result in low daytime dispersion around 20-22. .TODAY... TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........10 12 11 7 3 3 2 2 2 1 1 2 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............48 45 46 50 53 57 59 61 62 63 63 59 RH..............93 100 100 86 74 57 49 41 36 32 32 39 20 FT wind dir..NW NW NW NW NW NW NW NW NW NW NW NW 20 FT wind spd..6 6 6 7 7 7 7 7 7 6 6 5 20 FT wind gust.14 14 14 14 14 14 14 14 13 12 12 9 Mix hgt (kft)...0.6 0.6 1.0 1.3 1.7 2.1 2.6 3.1 3.1 3.0 3.0 2.1 Transp wind dir.NW N N N N N NW NW NW NW NW NW Transp wind spd.12 12 13 14 14 14 14 13 13 12 10 9 Dispersion idx..5 12 16 24 31 38 44 48 46 43 39 25 LVORI...........7 7 5 4 3 1 1 1 1 1 1 2 .TONIGHT... TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........2 3 3 4 4 4 5 5 5 5 6 5 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............53 49 46 45 43 42 40 40 38 38 37 36 RH..............52 61 68 70 73 73 79 79 82 82 82 85 20 FT wind dir..NW NW NW NW NW NW NW NW N N N NE 20 FT wind spd..2 2 2 1 1 1 1 1 1 1 1 1 20 FT wind gust.8 7 5 5 5 5 5 5 3 3 3 3 Mix hgt (kft)...1.2 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.3 0.3 0.3 0.3 Transp wind dir.NW NW NW NW NW NW NW NW N N N NE Transp wind spd.8 7 7 6 6 6 6 6 5 5 3 3 Dispersion idx..13 3 3 3 3 3 3 2 2 2 2 2 LVORI...........2 3 3 3 3 4 4 4 5 5 5 5 .FRIDAY... TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........4 4 3 2 1 2 4 5 6 7 8 10 Weather cov.....ARS ARS Weather type....FST FST Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............36 36 39 47 55 60 64 67 69 70 68 65 RH..............85 85 79 65 57 49 40 34 32 32 36 43 20 FT wind dir..N NW SW S SE S S SW SW SW SW SW 20 FT wind spd..1 1 1 2 2 2 3 3 3 3 3 3 20 FT wind gust.3 3 3 5 5 6 7 8 8 9 9 8 Mix hgt (kft)...0.3 0.3 0.5 0.6 0.8 1.2 1.7 2.1 2.1 2.2 2.3 1.6Transp wind dir.E SE S SW SW SW W W W W W W Transp wind spd.2 2 3 3 5 6 7 8 8 8 7 7 Dispersion idx..1 3 3 3 5 9 15 20 22 22 22 14 LVORI...........6 6 4 3 3 2 2 2 2 2 2 2 $$ Forecaster...Shashy Requested by...John McUmber Type of request...PRESCRIBED .TAG 2527397.0/JAX .DELDT 12/11/25 .FormatterVersion 2.0.0 .EMAIL johntmc1mber@ufl.edu