Spot Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
965 FNUS72 KJAX 190421 FWSJAX Spot Forecast for Sunnyhill South-East Marsh...SJRWMD National Weather Service Jacksonville FL 1221 AM EDT Tue Aug 19 2025 Forecast is based on ignition time of 0800 EDT on August 19. 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... Transport winds and therefore dispersions increase today and through Wednesday as Hurricane Erin approaches the region, though expected to pass several hundred miles to the east through late week. Increasingly breezy and drier flow near the surface and aloft is expected compared to normal, tapering rain chances near the site for the next several days. Wind direction is expected to remain persistent, with no sea breeze related shift expected at the site daily through Wednesday. .REST OF TODAY... TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........14 11 20 35 41 36 45 46 47 31 Weather cov..... SCH CHC CHC CHC CHC CHC Weather type.... RW RW RW RW RW RW Tstm cov........ ISO CHC CHC CHC ISO Chc of pcpn (%).0 0 0 10 20 30 40 40 40 30 Chc of thdr (%).10 0 0 10 20 30 40 40 40 30 Temp............78 83 86 89 92 93 93 93 92 92 RH..............94 85 75 66 60 56 56 56 56 56 Heat index (F)..78 90 98 102 102 103 102 103 101 101 20 FT wind dir..NE NE NE NE NE NE NE NE NE NE 20 FT wind spd..3 6 7 8 8 9 9 10 10 10 20 FT wind gust.6 9 10 13 13 14 14 16 16 16 Mix hgt (kft)...0.5 1.6 2.9 3.4 4.1 4.6 4.7 4.2 4.2 4.3 Transp wind dir.NE NE NE NE NE NE NE NE NE NE Transp wind spd.7 9 10 12 12 12 12 13 14 14 Dispersion idx..7 18 37 48 56 62 63 62 67 71 LVORI...........6 4 3 1 1 1 1 1 1 1 .TONIGHT... TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........36 26 29 20 6 7 3 4 3 7 5 2 Weather cov.....SCH SCH Weather type....RW RW Tstm cov........ISO ISO Chc of pcpn (%).20 20 10 10 10 0 0 0 0 0 0 0 Chc of thdr (%).20 20 10 10 10 0 0 0 0 0 0 0 Temp............90 88 85 82 80 80 79 78 77 77 76 75 RH..............60 63 67 77 82 82 88 91 94 90 94 97 Heat index (F)..99 96 91 87 85 79 78 78 77 76 76 76 20 FT wind dir..NE NE NE NE N N N N N N N N 20 FT wind spd..10 9 7 6 6 5 5 5 5 5 5 6 20 FT wind gust.16 14 10 9 9 7 7 7 7 7 7 9 Mix hgt (kft)...3.7 2.2 1.0 0.8 0.6 0.5 0.5 0.4 0.5 0.5 0.5 0.5 Transp wind dir.NE NE NE NE NE N N N N N N N Transp wind spd.14 14 13 12 10 9 8 8 8 9 10 12 Dispersion idx..63 39 6 5 5 4 4 4 4 4 5 5 LVORI...........1 1 3 4 4 5 6 6 6 6 6 7 .WEDNESDAY... TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........3 5 4 4 10 15 20 24 29 29 29 29 Weather cov..... SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC Weather type.... RW RW RW RW RW RW RW RW RW RW Tstm cov........ SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC Chc of pcpn (%).0 0 20 20 20 20 20 20 40 40 40 40 Chc of thdr (%).0 0 10 10 10 20 20 20 30 40 40 40 Temp............75 75 77 82 86 88 90 91 92 92 91 90 RH..............97 97 94 82 72 68 62 58 56 54 56 58 Heat index (F)..76 76 77 86 94 102 105 106 105 105 103 102 20 FT wind dir..N N N N N N N N N N N N 20 FT wind spd..6 6 6 7 7 8 8 7 8 7 7 7 20 FT wind gust.9 9 9 10 10 12 12 10 12 10 10 10 Mix hgt (kft)...0.6 0.7 0.8 1.7 2.6 3.5 4.0 4.5 5.0 4.7 4.5 4.2 Transp wind dir.N N N N N N N N N N N N Transp wind spd.12 13 13 14 14 14 13 12 10 9 9 8 Dispersion idx..5 6 14 30 45 58 60 61 60 55 49 43 LVORI...........7 8 5 3 3 2 1 1 1 1 1 1 $$ Forecaster...Dubois Requested by...Brent Keith Type of request...PRESCRIBED .TAG 2520133.0/JAX .DELDT 08/19/25 .FormatterVersion 2.0.0 .EMAIL bkeith@sjrwmd.com