815 FNUS75 KTWC 090934 FWSTWC Spot Forecast for SVRD pile...USFS National Weather Service Tucson AZ 234 AM MST Tue Sep 9 2025 Forecast is based on ignition time of 0600 MST on September 09. .DISCUSSION...Generally dry conditions for the SVRD pile today, however there will be just enough moisture for slight chances (~10 percent) of showers and thunderstorms. Any shower and thunderstorm activity will be isolated in nature and short lived. Outside of any thunderstorm infleunces, winds will be light today. The winds will increase on Wednesday with afternoon gusts to around 20 mph and continued slight chances for showers and thunderstorms. .TODAY... Sky/weather.........Mostly sunny in the morning, then partly cloudy in the afternoon with a slight chance of showers and thunderstorms. Chance of pcpn......0 percent then 10 percent after 1200. Max temperature.....87-90 degrees. Min humidity........28-31 percent. 20-foot winds.......South tou southeast 3 to 7 mph, becoming southwest 5 to 8 mph in the afternoon. Gusty and erratic winds expected near any thunderstorms late in the morning. Mixing height.......800 ft AGL increasing to 9200 ft AGL. Transport winds.....Variable less than 5 kts early this morning, then shifting to the south 5 to 10 knots in the late morning and early afternoon shifting to the southwest around 10 knots late in the afternoon. TIME (MST) 6 AM 9 AM NOON 3 PM Sky (%).........5 2 21 30 Weather cov..... S CHC S CHC Weather type....NONE NONE RNSHWR RNSHWR Tstm cov........ S CHC S CHC CWR.............0 0 10 10 Temp............64 82 86 87 RH..............68 42 33 29 20 FT wind......SW 2G5 E 2G6 S 4G10 SW 4G10 Mix hgt (ft)....BLW100 2700 8500 8300 Transport wind..NW 4 SE 5 S 10 SW 9 .TONIGHT... Sky/weather.........Mostly clear. Slight chance of showers and thunderstorms before 2000. Chance of pcpn......10 percent before 2000, then 0 percent. Min temperature.....63-66 degrees. Max humidity........62-65 percent. 20-foot winds.......Southwest winds 5 to 7 mph. Mixing height.......3500 ft AGL decreasing to 100 ft AGL. Transport winds.....Southwest 4 to 10 knots. TIME (MST) 6 PM 9 PM MIDNGT 3 AM Sky (%).........19 17 11 13 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ CWR.............10 0 0 0 Temp............78 73 70 67 RH..............43 49 54 58 20 FT wind......SW 4G10 SW 4G10 SW 4G10 S 4G7 Mix hgt (ft)....3500 BLW100 BLW100 BLW100 Transport wind..S 9 SW 9 SW 7 SW 4 .WEDNESDAY... Sky/weather.........Mostly sunny in the morning, then partly cloudy in the afternoon with a slight chance of showers and thunderstorms. Chance of pcpn......0 percent increasing to 10 percent after 1200. Max temperature.....85-88 degrees. Min humidity........34-37 percent. 20-foot winds.......South winds 6 to 12 mph with gusts up to around 20 mph in the afternoon. Gusty and erratic winds expected near thunderstorms late in the morning. Mixing height.......1000 ft AGL increasing to 6900 ft AGL. Transport winds.....South 6 to 14 knots. TIME (MST) 6 AM 9 AM NOON 3 PM Sky (%).........18 7 20 32 Weather cov..... S CHC S CHC Weather type....NONE NONE RNSHWR RNSHWR Tstm cov........ S CHC S CHC CWR.............0 0 10 10 Temp............66 83 86 83 RH..............62 41 35 38 20 FT wind......S 4G8 S 5G12 S 8G12 SW 7G11 Mix hgt (ft)....BLW100 3100 6300 4400 Transport wind..S 6 S 11 S 13 SW 11 $$ Forecaster...LADER Requested by...Beau Cartwright Type of request...PRESCRIBED .TAG 2521577.0/TWC .DELDT 09/09/25 .FormatterVersion 2.0.0 .EMAIL beaucartwright@usda.gov Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson