FNUS72 KKEY 142001 FWSKEY Spot Forecast for Big Pine Key 9.2 night...USFWS National Weather Service Key West FL 401 PM EDT Sat Oct 14 2023 If conditions become unrepresentative, contact the National Weather Service. Please contact our office at (305) 295-1316 ext 3, if you have questions or concerns with this forecast. .DISCUSSION... A weak boundary continues to slowly drift south towards the Island Chain arriving over the next couple hours. Meanwhile, an approaching arctic high will push a secondary front across the Florida Peninsula and across the Florida Keys sometime Sunday night. Rain chances will continue to increase through this evening, peaking overnight into Sunday afternoon. Best thunder chances will occur this evening into Sunday. West winds near 10 mph this evening will clock around to the northwest and eventually northwest to north behind the front and increase Sunday and Sunday night. .TONIGHT... Sky/weather.........Partly to mostly cloudy (45-65 percent). Chance of showers through the night. Slight chance of thunderstorms. Chance of pcpn......50 percent. LAL.................1-8 strikes. Min temperature.....Around 80. Max humidity........91 percent. Eye level winds.....West to northwest winds 8 to 11 mph this evening, decreasing to near 5 mph overnight. Wind (20 ft)........West to northwest winds 6 to 9 mph. Gusty and erratic winds expected near thunderstorms. Mixing height.......300 ft AGL. Transport winds.....West 10 to 14 mph. Dispersion index....44 decreasing to 9. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky cover.......PCLDY MCLDY MCLDY PCLDY MCLDY MCLDY Weather cov.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........ S CHC S CHC S CHC S CHC S CHC Chc of pcpn (%).30 50 50 50 50 50 LAL.............1 2 2 2 2 2 Temp............89 84 82 81 81 81 RH..............73 85 88 91 91 88 20 ft wind......W 12 W 10 W 10 NW 9 NW 8 NW 8 20 ft wind gust.16 15 15 13 12 12 Eye level wind..W 8 W 7 W 7 NW 6 NW 6 NW 6 Eye lvl wnd gst.11 11 11 9 8 8 Mix hgt (ft)....2900 2000 1600 1200 1200 1000 Transport wind..W 16 W 15 W 14 NW 13 NW 12 W 10 Dispersion......44 21 15 13 10 7 .SUNDAY... Sky/weather.........Mostly cloudy (55-65 percent). Chance of showers and slight chance of thunderstorms. Chance of pcpn......50 percent. LAL.................1-8 strikes. Max temperature.....Around 89. Min humidity........64 percent. Eye level winds.....West to northwest winds near 5 mph, increasing to 7 to 9 mph during the afternoon. Wind (20 ft)........West winds 8 to 12 mph. Gusty and erratic winds expected near thunderstorms. Mixing height.......3800 ft AGL. Transport winds.....West 14 to 16 mph. Dispersion index....13 increasing to 36. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky cover.......MCLDY MCLDY MCLDY MCLDY MCLDY MCLDY Weather cov.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........S CHC S CHC S CHC S CHC S CHC S CHC Chc of pcpn (%).50 50 50 50 50 50 LAL.............2 2 2 2 2 2 Temp............80 81 87 88 89 87 RH..............91 85 70 66 64 68 20 ft wind......W 7 W 9 W 9 W 8 W 9 W 9 20 ft wind gust.10 13 13 12 13 13 Eye level wind..W 5 W 6 W 6 W 6 W 6 W 6 Eye lvl wnd gst.7 9 9 8 9 9 Mix hgt (ft)....1500 1700 2900 3700 3700 3500 Transport wind..W 12 W 12 W 13 W 13 W 14 W 14 Dispersion......10 20 29 35 37 38 .SUNDAY NIGHT... Sky/weather.........Mostly cloudy (60-70 percent). Chance of showers in the evening, then slight chance of showers after midnight. Chance of pcpn......50 percent early, decreasing to 20 percent overnight. LAL.................No Tstms. Min temperature.....Around 76. Max humidity........85 percent. Eye level winds.....Northwest winds 6 to 11 mph. Wind (20 ft)........Northwest winds 7 to 12 mph. Mixing height.......1900 ft AGL. Transport winds.....Northwest 15 to 22 mph. Dispersion index....29 decreasing to 21 early in the evening, then increasing to 28 after 3 am. TIME (EDT) 6 PM 9 PM MIDNGT 3 AM Sky cover.......MCLDY MCLDY MCLDY MCLDY Weather cov.....CHANCE S CHC S CHC S CHC Weather type....RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........S CHC Chc of pcpn (%).50 20 20 20 LAL.............2 1 1 1 Temp............87 79 78 77 RH..............65 82 85 79 20 FT wind......W 9G14 NW 10G15 NW 13G16 NW 15G21 Eye level wind..W 6G10 NW 7G11 NW 9G11 NW 11G15 Mix hgt (ft)....3000 2100 2000 2600 Transport wind..W 15 NW 15 NW 16 NW 20 Dispersion......31 18 19 26 $$ Forecaster...MJV Requested by...Greg suszek Type of request...PRESCRIBED .TAG 2322276.3/KEY .DELDT 10/14/23 .FormatterVersion 2.0.0 .EMAIL Greg_suszek@fws.gov