Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
283 FNUS55 KPSR 310738 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 1238 AM MST Thu Jul 31 2025 .DISCUSSION... The limited monsoon moisture will provide for another day of mostly high terrain scattered showers and isolated thunderstorms with diminishing chances already by Friday. Chances for wetting rains will remain below 10% resulting in at least minor risk of dry lightning. Afternoon MinRHs today and Friday will mostly be between 10-15% across the lower deserts to 15-20% in higher terrain areas before dropping further into the weekend. Outside of the influence of thunderstorms, winds will generally follow diurnal tendencies with typical afternoon upslope gustiness. Temperatures will remain above normal with lower desert highs mostly between 108-113 degrees. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-311945- West Central Deserts/Northwest Maricopa County/Greater Phoenix Area/Southwest Deserts/Southwest Maricopa County/ Northwest and North-Central Pinal County- Phoenix BLM/YUM BLM/CAZ-CRZ- 1238 AM MST Thu Jul 31 2025 .TODAY... * Sky/weather.....................Sunny. * Max Temperature.................104-111. * 24 hr trend..................Little change. * Min Humidity....................13-19 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming southwest 5 to 15 mph in the afternoon. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............2 percent. * Mixing Height for Phoenix.......11400 ft AGL. * Transport Wind for Phoenix......Southwest 6 knots. * Dispersion for Phoenix..........Good. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................78-88. * 24 hr trend..................Little change. * Max Humidity....................31-45 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the evening becoming southeast after midnight. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............5 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................105-113. * 24 hr trend..................Little change. * Min Humidity....................10-15 pct. * 24 hr trend..................3 pct drier. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming southwest in the afternoon. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Phoenix.......13300 ft AGL. * Transport Wind for Phoenix......Southwest 7 knots. * Dispersion for Phoenix..........Very good. .EXTENDED... .SATURDAY...Clear. Lows 76-86. Highs 107-113. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .SUNDAY...Clear. Lows 76-86. Highs 105-111. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .MONDAY...Mostly clear. Lows 76-86. Highs 105-110. South winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .TUESDAY...Partly cloudy. Lows 79-89. Highs 105-111. .WEDNESDAY...Mostly clear. Lows 81-91. Highs 108-114. $$ AZZ131-CAZ231-311945- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 1238 AM MST Thu Jul 31 2025 /1238 AM PDT Thu Jul 31 2025/ .TODAY... * Sky/weather.....................Sunny. * Max Temperature.................105-110. * 24 hr trend..................Little change. * Min Humidity....................10-17 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 25 to 35 mph in the morning becoming 15 to 25 mph in the afternoon. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Yuma..........7500 ft AGL. * Transport Wind for Yuma.........South 14 knots. * Dispersion for Yuma.............Excellent. .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................75-80. * 24 hr trend..................Little change. * Max Humidity....................30-52 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................107-112. * 24 hr trend..................Little change. * Min Humidity....................9-13 pct. * 24 hr trend..................3 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Yuma..........9500 ft AGL. * Transport Wind for Yuma.........South 8 knots. * Dispersion for Yuma.............Very good. .EXTENDED... .SATURDAY...Clear. Lows 72-79. Highs 108-113. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .SUNDAY...Clear. Lows 72-79. Highs 106-111. South winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .MONDAY...Mostly clear. Lows 74-81. Highs 106-111. South winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .TUESDAY...Mostly clear. Lows 78-84. Highs 107-112. .WEDNESDAY...Mostly clear. Lows 79-85. Highs 110-115. $$ AZZ133-311945- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 1238 AM MST Thu Jul 31 2025 .TODAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................91-106. * 24 hr trend..................Little change. * Min Humidity....................12-22 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming southwest in the afternoon. * Winds...10000 FT MSL............Light and variable in the morning becoming southwest 5 to 15 mph in the afternoon. * Chance of Precip................0 percent in the morning becoming 20 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............14 percent. .TONIGHT... * Sky/weather.....................Mostly clear. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................64-83. * 24 hr trend..................Little change. * Max Humidity....................36-60 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 10 mph in the evening becoming east after midnight. * Winds...10000 FT MSL............West 5 to 15 mph in the evening becoming light and variable after midnight. * Chance of Precip................20 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............23 percent. .FRIDAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................92-108. * 24 hr trend..................Little change. * Min Humidity....................13-20 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming southwest in the afternoon. * Winds...10000 FT MSL............Light and variable in the morning becoming southwest 5 to 15 mph in the afternoon. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............6 percent. .EXTENDED... .SATURDAY...Clear. Lows 64-82. Highs 94-109. West winds 10 to 20 mph. Minimum relative humidity may be lower than 15 percent. .SUNDAY...Clear. Lows 63-81. Highs 93-108. West winds 10 to 20 mph. Minimum relative humidity may be lower than 15 percent. .MONDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 63-82. Highs 94-107. West winds 10 to 20 mph. Minimum relative humidity may be lower than 15 percent. .TUESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 65-84. Highs 94-108. .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 66-84. Highs 95-110. $$ CAZ232-311945- Imperial County And Eastern Riverside County- 1238 AM PDT Thu Jul 31 2025 .TODAY... * Sky/weather.....................Sunny. * Max Temperature.................100-110. * 24 hr trend..................Little change. * Min Humidity....................5-10 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 25 to 35 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................74-81. * 24 hr trend..................Little change. * Max Humidity....................16-39 pct. * 24 hr trend..................5 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southwest 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................102-111. * 24 hr trend..................Little change. * Min Humidity....................5-9 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southwest 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .SATURDAY...Clear. Lows 74-81. Highs 103-113. West winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .SUNDAY...Clear. Lows 74-81. Highs 102-111. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .MONDAY...Mostly clear. Lows 75-83. Highs 102-111. South winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .TUESDAY...Mostly clear. Lows 77-85. Highs 102-111. .WEDNESDAY...Mostly clear. Lows 79-87. Highs 105-114. $$ CAZ230-311945- Joshua Tree National Park- 1238 AM PDT Thu Jul 31 2025 .TODAY... * Sky/weather.....................Sunny. * Max Temperature.................90-104. * 24 hr trend..................Little change. * Min Humidity....................5-10 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southwest 20 to 30 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................66-75. * 24 hr trend..................Little change. * Max Humidity....................16-22 pct. * 24 hr trend..................4 pct drier. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................91-105. * 24 hr trend..................Little change. * Min Humidity....................5-9 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..West 5 to 10 mph in the morning becoming south 5 to 15 mph in the afternoon. * Winds...10000 FT MSL............Southwest 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .SATURDAY...Clear. Lows 67-77. Highs 93-107. West winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .SUNDAY...Clear. Lows 68-77. Highs 92-106. West winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .MONDAY...Mostly clear. Lows 68-78. Highs 91-105. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .TUESDAY...Mostly clear. Lows 69-80. Highs 91-105. .WEDNESDAY...Mostly clear. Lows 71-82. Highs 94-108. $$ .8 TO 10 DAY OUTLOOK...Thursday August 7th through Saturday August 9th: Above normal temperatures and near to below median precipitation.