Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
391 FNUS55 KPSR 040830 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 130 AM MST Thu Sep 4 2025 .DISCUSSION... Higher moisture levels will continue to allow for periods of showers and thunderstorms into the weekend with wetting rain chances as high as 20-30% over the western districts to 40-60% over the eastern districts. Localized heavy rainfall and flooding will be possible again today with diminishing chances into Friday. MinRHs are only expected to drop into a 35-45% range through Saturday as temperatures drop to below normal. Outside of thunderstorm driven winds, winds will tend to be on the light side and favor the south much of the period. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-042030- 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- 130 AM MST Thu Sep 4 2025 .TODAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms in the morning becoming chance of showers and thunderstorms in the afternoon. * Max Temperature.................92-98. * 24 hr trend..................5 degrees cooler. * Min Humidity....................34-42 pct. * 24 hr trend..................11 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southeast 5 to 15 mph. * Chance of Precip................50 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............42 percent. * Mixing Height for Phoenix.......8400 ft AGL. * Transport Wind for Phoenix......Southwest 9 knots. * Dispersion for Phoenix..........Very good. .TONIGHT... * Sky/weather.....................Mostly cloudy in the evening becoming partly cloudy after midnight. Chance of thunderstorms in the evening. chance of showers . slight chance of thunderstorms after midnight. * Min Temperature.................72-82. * 24 hr trend..................Little change. * Max Humidity....................71-84 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 10 mph in the evening becoming east after midnight. * Winds...10000 FT MSL............Northeast 5 to 15 mph. * Chance of Precip................60 percent. * CWR (>= 0.10 IN)................40 percent west portion...60 percent east portion. * Chance of Thunder...............42 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms. * Max Temperature.................89-95. * 24 hr trend..................3 degrees cooler. * Min Humidity....................38-46 pct. * 24 hr trend..................4 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming south in the afternoon. * Winds...10000 FT MSL............Northeast 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent west portion...10 percent east portion. * Chance of Thunder...............22 percent. * Mixing Height for Phoenix.......7000 ft AGL. * Transport Wind for Phoenix......West 5 knots. * Dispersion for Phoenix..........Fair. .EXTENDED... .SATURDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 73-83. Highs 90-96. South winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 74-84. Highs 93-100. Southwest winds 5 to 10 mph. .MONDAY...Clear. Lows 73-83. Highs 95-102. Southwest winds 5 to 10 mph. .TUESDAY...Clear. Lows 70-80. Highs 95-102. .WEDNESDAY...Mostly clear. Lows 70-80. Highs 93-101. $$ AZZ131-CAZ231-042030- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 130 AM MST Thu Sep 4 2025 /130 AM PDT Thu Sep 4 2025/ .TODAY... * Sky/weather.....................Partly sunny. Slight chance of thunderstorms in the morning. slight chance of showers . slight chance of thunderstorms in the afternoon. * Max Temperature.................95-100. * 24 hr trend..................3 degrees cooler. * Min Humidity....................36-44 pct. * 24 hr trend..................10 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............East 5 to 15 mph. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............25 percent. * Mixing Height for Yuma..........7100 ft AGL. * Transport Wind for Yuma.........South 14 knots. * Dispersion for Yuma.............Excellent. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of thunderstorms in the evening. slight chance of showers . slight chance of thunderstorms after midnight. * Min Temperature.................75-80. * 24 hr trend..................3 degrees cooler. * Max Humidity....................76-92 pct. * 24 hr trend..................12 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............North 5 to 15 mph. * Chance of Precip................30 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............22 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms. * Max Temperature.................93-98. * 24 hr trend..................Little change. * Min Humidity....................38-47 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Northeast 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............16 percent. * Mixing Height for Yuma..........7300 ft AGL. * Transport Wind for Yuma.........South 9 knots. * Dispersion for Yuma.............Good. .EXTENDED... .SATURDAY...Mostly clear. Lows 76-81. Highs 94-99. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 76-81. Highs 97-102. South winds 5 to 15 mph. .MONDAY...Clear. Lows 72-81. Highs 98-103. South winds 5 to 15 mph. .TUESDAY...Clear. Lows 69-77. Highs 96-101. .WEDNESDAY...Clear. Lows 69-74. Highs 95-100. $$ AZZ133-042030- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 130 AM MST Thu Sep 4 2025 .TODAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms in the morning becoming chance of showers and thunderstorms in the afternoon. * Max Temperature.................81-95. * 24 hr trend..................7 degrees cooler. * Min Humidity....................31-44 pct. * 24 hr trend..................16 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 5 to 15 mph. * Chance of Precip................60 percent. * CWR (>= 0.10 IN)................30 percent. * Chance of Thunder...............48 percent. .TONIGHT... * Sky/weather.....................Mostly cloudy. Chance of thunderstorms in the evening. chance of showers . slight chance of thunderstorms after midnight. * Min Temperature.................58-73. * 24 hr trend..................Little change. * Max Humidity....................72-92 pct. * 24 hr trend..................15 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the evening becoming southeast after midnight. * Winds...10000 FT MSL............North 5 to 15 mph. * Chance of Precip................60 percent. * CWR (>= 0.10 IN)................50 percent. * Chance of Thunder...............42 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of thunderstorms in the morning. chance of showers . chance of thunderstorms in the afternoon. * Max Temperature.................76-90. * 24 hr trend..................5 degrees cooler. * Min Humidity....................37-53 pct. * 24 hr trend..................9 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 10 mph in the morning becoming southwest in the afternoon. * Winds...10000 FT MSL............Northeast 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............40 percent. .EXTENDED... .SATURDAY...Partly cloudy with chance of showers and thunderstorms. Lows 58-74. Highs 78-91. Southwest winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 59-76. Highs 82-95. West winds 5 to 15 mph. .MONDAY...Mostly clear. Lows 60-76. Highs 83-98. West winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 60-76. Highs 84-98. .WEDNESDAY...Mostly clear. Lows 59-74. Highs 83-98. $$ CAZ232-042030- Imperial County And Eastern Riverside County- 130 AM PDT Thu Sep 4 2025 .TODAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................92-101. * 24 hr trend..................Little change. * Min Humidity....................33-45 pct. * 24 hr trend..................9 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............East 5 to 15 mph. * Chance of Precip................10 percent in the morning becoming 30 percent in the afternoon. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............20 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................74-80. * 24 hr trend..................3 degrees cooler. * Max Humidity....................72-92 pct. * 24 hr trend..................14 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming northeast 5 to 15 mph after midnight. * Chance of Precip................20 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............18 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms. * Max Temperature.................90-98. * 24 hr trend..................Little change. * Min Humidity....................35-49 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southeast 5 to 15 mph. * Winds...10000 FT MSL............Northeast 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............17 percent. .EXTENDED... .SATURDAY...Mostly clear. Lows 74-82. Highs 91-100. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 73-81. Highs 93-102. South winds 5 to 15 mph. .MONDAY...Clear. Lows 70-79. Highs 93-103. Southwest winds 5 to 15 mph. .TUESDAY...Clear. Lows 67-75. Highs 90-100. .WEDNESDAY...Clear. Lows 67-73. Highs 89-98. $$ CAZ230-042030- Joshua Tree National Park- 130 AM PDT Thu Sep 4 2025 .TODAY... * Sky/weather.....................Sunny in the morning becoming partly sunny in the afternoon. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................82-96. * 24 hr trend..................Little change. * Min Humidity....................34-45 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable. * Chance of Precip................0 percent in the morning becoming 30 percent in the afternoon. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............19 percent. .TONIGHT... * Sky/weather.....................Mostly clear. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................63-75. * 24 hr trend..................4 degrees cooler. * Max Humidity....................72-92 pct. * 24 hr trend..................19 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable. * Chance of Precip................10 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............10 percent. .FRIDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms . * Max Temperature.................80-93. * 24 hr trend..................3 degrees cooler. * Min Humidity....................38-51 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............23 percent. .EXTENDED... .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 63-76. Highs 81-94. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 62-76. Highs 83-96. Southwest winds 5 to 15 mph. .MONDAY...Clear. Lows 59-73. Highs 82-97. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .TUESDAY...Mostly clear. Lows 57-70. Highs 79-94. .WEDNESDAY...Clear. Lows 56-68. Highs 77-92. $$ .8 TO 10 DAY OUTLOOK...Thursday September 11th through Saturday September 13th: Near normal temperatures and near median precipitation.