Suppression Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
180 FNUS72 KJAX 212011 FWSJAX Spot Forecast for Ashley...NPS National Weather Service Jacksonville FL 411 PM EDT Mon Jul 21 2025 Forecast is based on forecast start time of 1600 EDT on July 21. 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. ...HEAT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .DISCUSSION... Scattered T`storms will develop through the reminder of the afternoon hours as a trough extends from the southeast coast into northern FL. Gusty and erratic winds possible in isolated strong T`storms this afternoon with frequent lightning and locally heavy downpours. Light southwest winds 5-10 mph outside of T`storms will become westerly under 5mph overnight as slight chances for T`storms and showers end by around to just after midnight. Tuesday, low end dispersions persist through the day light westerly winds become northeast to easterly due to the Atlantic seabreeze passage before a cold front approaches later in the day. Ahead of the cold front there will be scattered showers and T`storms becoming more numerous in the late afternoon. A few strong to isolated severe T`storms may produce gusty and erratic winds, frequent lightning, and locally heavy rainfall over the site. .REST OF TODAY... TIME (EDT) 4PM 5PM Sky (%).........69 69 Weather cov.....CHC CHC Weather type....RW RW Tstm cov........CHC CHC Chc of pcpn (%).40 50 Chc of thdr (%).50 40 Temp............90 88 RH..............64 68 Heat index (F)..103 103 Wind chill (F)..91 91 20 FT wind dir..W SW 20 FT wind spd..7 7 20 FT wind gust.10 10 Mix hgt (kft)...1.4 1.1 Transp wind dir.W W Transp wind spd.10 12 Dispersion idx..23 18 LVORI...........2 3 .TONIGHT... TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........70 55 66 67 50 51 55 49 51 39 44 47 Weather cov.....CHC CHC CHC CHC CHC SCH SCH SCH SCH Weather type....RW RW RW RW RW RW RW RW RW Tstm cov........CHC CHC CHC CHC CHC SCH SCH SCH SCH Chc of pcpn (%).50 40 50 40 30 20 20 20 20 10 10 10 Chc of thdr (%).40 30 40 30 30 20 20 10 10 10 10 20 Temp............88 87 85 83 83 81 81 80 79 78 78 77 RH..............66 68 72 77 77 79 79 82 85 88 85 88 Heat index (F)..101 94 92 89 86 86 85 79 79 79 78 78 Wind chill (F)..90 86 84 82 81 81 80 79 79 79 78 78 20 FT wind dir..SW SW SW SW SW SW W W W W W W 20 FT wind spd..7 6 6 5 3 3 3 2 2 2 3 3 20 FT wind gust.10 9 9 7 6 6 6 3 3 3 6 6 Mix hgt (kft)...1.0 0.9 0.7 0.7 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 Transp wind dir.W W W W W W W W W W W W Transp wind spd.10 10 10 9 9 9 10 10 12 12 12 12 Dispersion idx..15 12 8 7 7 7 7 7 8 7 8 8 LVORI...........3 3 3 4 4 4 4 4 4 5 4 4 .TUESDAY... TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........38 33 24 21 20 24 17 32 41 38 34 41 Weather cov..... CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC Weather type.... RW RW RW RW RW RW RW RW RW RW Tstm cov........ SCH SCH SCH CHC CHC CHC CHC CHC CHC CHC Chc of pcpn (%).10 10 30 30 30 30 30 30 30 40 50 50 Chc of thdr (%).20 20 20 20 20 30 30 30 30 40 50 50 Temp............77 77 79 83 88 91 93 93 93 93 91 89 RH..............88 90 91 82 70 64 60 58 58 58 64 68 Heat index (F)..77 76 79 91 96 102 103 103 103 102 100 98 Wind chill (F)..77 76 79 83 86 89 90 90 90 89 87 86 20 FT wind dir..W W W W NW NW N NE E SE SE SE 20 FT wind spd..3 3 3 3 5 6 6 6 6 6 6 6 20 FT wind gust.6 6 8 8 8 8 8 8 9 10 10 10 Mix hgt (kft)...0.5 0.6 0.6 1.0 1.4 1.7 1.8 1.9 1.9 1.7 1.4 1.2 Transp wind dir.W W W W NW NW NW NW NW N E SE Transp wind spd.12 12 12 10 9 8 8 8 8 9 10 12 Dispersion idx..8 6 11 13 16 18 19 19 21 21 19 18 LVORI...........5 5 5 4 3 3 3 3 3 2 3 3 $$ Forecaster...Bricker Requested by...Megan Hurrell Type of request...WILDFIRE .TAG 2518377.0/JAX .DELDT 07/21/25 .FormatterVersion 2.0.0 .EMAIL Lucas_hunkler@nps.gov,megan_hurrell@nps.gov