Spot Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
483 FNUS72 KJAX 180903 FWSJAX Spot Forecast for FCSF Rx Fire...Florida Forest Service National Weather Service Jacksonville FL 503 AM EDT Sat Jul 18 2026 Forecast is based on ignition time of 0800 EDT on July 18. 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...Similar to yesterday, there is little chance (under 10%) of showers/storms near the burn area today as pocket of dry air pushes in from the south later this morning, capping the potential for rain. Winds shift south to south-southwest today and will be a bit stronger. The Atlantic sea breeze will struggle to make it all the way to FCSF area today and confidence is higher that it will stall right along I-95. Good dispersion today and there is potential for humidity to push lower than forecast as low as 45% as drier air aloft mixes toward the surface. Dry air will again limit the potential for rain into Sunday as well but increasing tropical moisture is likely to overspread the area by Monday fueling higher chances for thunderstorms. .REST OF TODAY... TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........14 15 11 17 11 24 23 22 22 23 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 10 10 10 10 Chc of thdr (%).0 0 0 0 0 0 10 10 10 10 Temp............77 80 85 88 89 91 93 93 94 93 RH..............90 88 75 66 64 58 52 54 51 52 Heat index (F)..77 86 94 98 99 101 102 103 103 102 20 FT wind dir..S S S S S S S S S S 20 FT wind spd..2 3 5 6 6 6 7 8 9 9 20 FT wind gust.5 6 7 9 10 10 12 12 14 14 Mix hgt (kft)...0.9 1.5 2.2 3.1 4.1 4.8 5.5 5.7 5.1 5.5 Transp wind dir.S S S S S S S S S S Transp wind spd.7 8 9 9 10 10 12 12 12 12 Dispersion idx..6 10 18 25 37 43 55 57 51 55 LVORI...........6 5 3 3 1 1 1 1 1 1 .TONIGHT... TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........27 14 26 18 12 14 27 26 20 9 9 14 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).10 10 10 0 0 0 0 0 0 0 0 0 Chc of thdr (%).10 10 10 0 0 0 0 0 0 0 0 0 Temp............92 90 86 83 81 80 80 79 78 78 77 77 RH..............54 58 65 72 77 79 79 82 85 82 85 85 Heat index (F)..101 98 93 89 86 84 84 79 78 78 77 77 20 FT wind dir..S SW SW SW SW SW SW SW SW SW S S 20 FT wind spd..8 7 6 5 5 3 3 2 2 2 2 2 20 FT wind gust.14 12 10 8 7 7 7 6 6 6 6 6 Mix hgt (kft)...4.6 3.2 1.5 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4 Transp wind dir.SW SW SW SW SW SW SW SW SW SW S SW Transp wind spd.12 12 9 9 8 8 8 8 7 6 6 6 Dispersion idx..46 32 12 4 3 3 3 3 3 2 2 2 LVORI...........1 1 2 3 3 4 4 5 5 5 5 5 .SUNDAY... TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........20 29 13 15 25 34 33 41 42 44 40 52 Weather cov..... CHC Weather type.... RW Tstm cov........ CHC Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 10 30 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 10 30 Temp............76 76 78 81 85 87 90 91 92 93 91 91 RH..............87 87 88 82 72 68 60 58 54 54 58 56 Heat index (F)..76 76 78 87 94 96 99 101 101 103 101 100 20 FT wind dir..S S S S S S S S S S S S 20 FT wind spd..2 2 2 3 6 7 8 8 8 8 9 8 20 FT wind gust.6 5 6 8 10 12 13 14 14 15 15 15 Mix hgt (kft)...0.4 0.4 0.9 2.4 3.4 4.2 4.9 5.3 5.6 5.0 4.9 4.1 Transp wind dir.SW S S S S S S S S S S S Transp wind spd.5 5 7 9 12 12 10 10 10 12 12 9 Dispersion idx..2 2 5 19 34 42 44 48 50 50 49 33 LVORI...........6 6 6 3 3 1 1 1 1 1 1 1 $$ Forecaster...Boothe Requested by...Sean Dowie Type of request...PRESCRIBED .TAG 2617611.0/JAX .DELDT 07/18/26 .FormatterVersion 2.0.0 .EMAIL sean.dowie@fdacs.gov