203 FNCA72 TJSJ 060616 FWSSJU Spot Forecast for South Zone Severity 2026...PRFD National Weather Service San Juan PR 216 AM AST Sat Jun 6 2026 Forecast is based on forecast start time of 0800 AST on June 06. If conditions become unrepresentative...contact the National Weather Service. Please contact our office if you have questions or concerns with this forecast at PHONE: 787-253-4586. .DISCUSSION... Moisture across the region today will maintain RH values slightly above the mid 50s to the low 60s, with briefly periods of even higher RH % due to the cloudiness development. Winds will remain from the southeast at 15 mph or less with gusty winds near coastal areas. Across the southwestern area, the is a none to low rainfall probability during the day. Therefore, the area will experience mostly sunny skies. .REST OF TODAY... Sky/weather.........Sunny (15-25 percent). Isolated showers early in the morning. Chance of pcpn......20 percent. Max temperature.....Around 90. Min humidity........64 percent. Max apparent temp...102. Surface winds (mph).Southeast winds 14 to 20 mph with gusts to around 32 mph. Wind (20 ft)........Southeast winds 14 to 20 mph with gusts to around 32 mph. Mixing height.......3300 ft AGL. Transport winds.....Southeast 16 to 23 mph. Smoke dispersal.....Good (43600 knot-ft). Dispersion..........6. TIME (AST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........20 30 30 30 5 5 5 5 5 5 Weather cov.....ISO ISO ISO ISO Weather type....RW RW RW RW Tstm cov........ Chc of pcpn (%).10 20 20 20 0 0 0 0 0 0 Temp............84 86 87 88 89 90 90 89 88 87 RH..............72 68 68 66 64 64 64 66 68 68 Aparnt tmp (F)..91 94 96 98 99 102 102 100 99 96 20 FT wind dir..E E SE SE SE SE SE SE SE SE 20 FT wind spd..14 15 16 17 18 20 20 17 15 14 20 FT wind gust.23 25 28 30 31 32 32 29 25 23 Surface wnd dir.E E SE SE SE SE SE SE SE SE Surface wnd spd.14 15 16 17 18 20 20 17 15 14 Surface wnd gst.23 25 28 30 31 32 32 29 25 23 Mix hgt (kft)...2.3 2.8 3.1 3.3 3.1 2.7 2.5 2.7 3.0 3.2 Transp wind dir.E E E E SE SE SE SE E E Transp wind spd.17 18 20 21 22 23 23 21 18 16 Dispersion......6 6 6 6 6 6 6 6 6 6 Vrate kt-ft/1K..50 50 50 50 50 50 44 44 44 44 Ventrate Cat....FR FR FR FR FR FR FR FR FR FR .TONIGHT... Sky/weather.........Mostly clear (10-20 percent). Haze after 3 am. Chance of pcpn......10 percent. Min temperature.....Around 76. Max humidity........90 percent. Max apparent temp...92. Surface winds (mph).East winds 14 to 16 mph. Wind (20 ft)........East winds 14 to 16 mph. Mixing height.......1100 ft AGL. Transport winds.....East 16 to 20 mph. Smoke dispersal.....Good (43600 knot-ft) early in the evening decreasing to fair (22800 knot-ft) late in the night. Dispersion..........6. TIME (AST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........5 5 5 20 20 20 5 5 5 20 20 20 Weather cov..... ISO ISO ISO DEF DEF DEF Weather type.... RW RW RW HAZ HAZ HAZ Tstm cov........ Chc of pcpn (%).0 0 0 10 10 10 0 0 0 10 10 10 Temp............84 82 81 80 79 78 78 77 76 76 76 78 RH..............74 79 82 85 88 88 88 87 90 90 90 85 Aparnt tmp (F)..92 89 87 85 79 78 78 77 76 76 76 78 20 FT wind dir..SE E E E E E E E E E E E 20 FT wind spd..14 14 15 15 16 16 16 15 15 14 14 14 20 FT wind gust.23 23 24 25 26 26 26 25 25 24 23 22 Surface wnd dir.SE E E E E E E E E E E E Surface wnd spd.14 14 15 15 16 16 16 15 15 14 14 14 Surface wnd gst.23 23 24 25 26 26 26 25 25 24 23 22 Mix hgt (kft)...2.8 2.3 1.8 1.7 1.7 1.8 1.8 1.8 1.7 1.5 1.2 1.1 Transp wind dir.E E E E E E E E E E E E Transp wind spd.16 17 18 20 20 20 20 20 18 17 16 16 Dispersion......6 6 6 6 6 6 6 6 6 6 6 6 Vrate kt-ft/1K..44 44 30 30 30 30 30 30 23 23 23 23 Ventrate Cat....FR FR PR PR PR PR PR PR PR PR PR PR .SUNDAY... Sky/weather.........Sunny (15-25 percent). Haze through the day. Isolated showers in the late morning and afternoon. Chance of pcpn......20 percent. Max temperature.....Around 90. Min humidity........62 percent. Max apparent temp...101. Surface winds (mph).Southeast winds 14 to 21 mph. Gusts up to 31 mph increasing to 35 mph late in the morning. Wind (20 ft)........Southeast winds 14 to 21 mph. Gusts up to 31 mph increasing to 35 mph late in the morning. Mixing height.......3700 ft AGL. Transport winds.....East 17 to 24 mph. Smoke dispersal.....Fair (22800 knot-ft) early in the morning increasing to excellent (66000 knot-ft) in the afternoon. Dispersion..........6. TIME (AST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........5 5 5 20 20 20 30 30 30 30 30 30 Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF Weather type....HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ Tstm cov........ Chc of pcpn (%).0 0 0 10 10 10 20 20 20 20 20 20 Temp............80 83 84 86 87 88 89 90 90 89 89 87 RH..............77 72 72 70 68 68 64 62 62 66 66 68 Aparnt tmp (F)..84 89 91 95 96 99 99 101 101 100 100 96 20 FT wind dir..E E E E SE SE SE SE SE SE SE SE 20 FT wind spd..14 14 15 16 18 20 21 21 21 20 18 18 20 FT wind gust.23 23 25 28 31 33 33 35 33 32 31 30 Surface wnd dir.E E E E SE SE SE SE SE SE SE SE Surface wnd spd.14 14 15 16 18 20 21 21 21 20 18 18 Surface wnd gst.23 23 25 28 31 33 33 35 33 32 31 30 Mix hgt (kft)...1.5 2.0 2.6 3.1 3.5 3.7 3.7 3.5 3.3 3.3 3.3 3.2 Transp wind dir.E E E E E E E SE SE SE E E Transp wind spd.17 18 20 21 23 24 24 24 24 23 22 21 Dispersion......6 6 6 6 6 6 6 6 6 6 6 6 Vrate kt-ft/1K..23 23 66 66 66 66 66 66 61 61 61 61 Ventrate Cat....PR PR GD GD GD GD GD GD GD GD GD GD $$ Forecaster...L. Ingles Requested by...Jose M. Martinez Type of request...OTHER .TAG 2614744.5/SJU .DELDT 06/06/26 .FormatterVersion 2.0.0 .EMAIL josemartin@dsp.pr.gov