FNUS75 KTWC 201554 FWSTWC Spot Forecast for Border I Rx...USFS National Weather Service Tucson AZ 854 AM MST Fri Mar 20 2026 Forecast is based on ignition time of 0700 MST on March 25. .DISCUSSION...Expect temperatures 15-20 degrees above normal with min RH values below 10 percent both Wednesday and Thursday. Overnight recoveries will be around 20 percent. Winds will predominantly be out of the west with occasional afternoon gusts 20-25 mph. .WEDNESDAY... Sky/weather.........Sunny. Chance of pcpn......0 percent. Max temperature.....85-88 degrees. Min humidity........7-10 percent. 20-foot winds.......South winds 5 to 8 mph shifting to the west 7 to 12 mph in the afternoon with occasional gusts to 20 mph. Mixing height.......1400 ft AGL increasing to 10800 ft AGL. Smoke dispersal.....Poor (0 knot-ft) increasing to excellent (138400 knot-ft). TIME (MST) 7 AM 10 AM 1 PM 4 PM Sky (%).........2 1 2 3 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 Temp............64 78 86 86 RH..............19 12 9 8 20 FT wind......S 4G7 S 4G8 SW 8G14 W 10G17 Mix hgt (ft)....BLW100 1400 8000 10600 Vrate kt-ft/1K..0 11 104 159 Ventrate Cat....POOR MRGL EXNT EXNT .WEDNESDAY NIGHT... Sky/weather.........Clear. Chance of pcpn......0 percent. Min temperature.....59-62 degrees. Max humidity........20-23 percent. 20-foot winds.......West northwest winds 5 to 8 mph. Mixing height.......6300 ft AGL decreasing to 100 ft AGL. Smoke dispersal.....Very good (88500 knot-ft) decreasing to poor (0 knot-ft). TIME (MST) 6 PM 9 PM MIDNGT 3 AM Sky (%).........3 2 1 1 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 Temp............81 70 65 62 RH..............10 15 18 20 20 FT wind......W 7G14 W 6G12 W 5G8 NW 4G7 Mix hgt (ft)....6300 BLW100 BLW100 BLW100 Vrate kt-ft/1K..89 0 0 0 Ventrate Cat....VYGD POOR POOR POOR .THURSDAY... Sky/weather.........Sunny. Chance of pcpn......0 percent. Max temperature.....84-87 degrees. Min humidity........8-11 percent. 20-foot winds.......West winds 8 to 14 mph. Gusts up to 25 mph in the afternoon. Mixing height.......1000 ft AGL increasing to 13800 ft AGL. Smoke dispersal.....Poor (0 knot-ft) increasing to excellent (159600 knot-ft). TIME (MST) 6 AM 9 AM NOON 3 PM Sky (%).........4 11 16 21 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 Temp............62 73 85 85 RH..............20 14 9 9 20 FT wind......W 3G6 SW 5G8 W 10G16 W 12G21 Mix hgt (ft)....BLW100 1000 6400 12400 Vrate kt-ft/1K..0 7 70 137 Ventrate Cat....POOR POOR VYGD EXNT $$ Forecaster...HARDIN Requested by...Wes Gutweiler Type of request...PRESCRIBED .TAG 2605957.1/TWC .DELDT 03/20/26 .FormatterVersion 2.0.0 .EMAIL steven.mcmurtrie@usda.gov,wesley.gutweiler@usda.gov,kevin.cooper2@usda.gov,beau.cartwright@usda.gov Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson