Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
997 FNUS55 KPSR 030817 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 117 AM MST Wed Sep 3 2025 .DISCUSSION... Increased moisture levels will result in much better chances for wetting rainfall and a reduced wildfire threat through Friday. The best chances for rain are likely to be later Thursday into early Friday. Enhanced moisture availability will result in MinRHs only falling to between 20-30% range today and 30-40% on Thursday and Friday as temperatures drop to below normal. Outside areas of precipitation, winds will remain fairly light and follow diurnal trends today before favoring a southerly direction for Thursday and Friday. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-032030- 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- 117 AM MST Wed Sep 3 2025 .TODAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................98-103. * 24 hr trend..................Little change. * Min Humidity....................24-32 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southeast 10 to 20 mph. * Chance of Precip................0 percent in the morning becoming 20 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............15 percent. * Mixing Height for Phoenix.......10300 ft AGL. * Transport Wind for Phoenix......Southwest 5 knots. * Dispersion for Phoenix..........Good. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms. * Min Temperature.................76-86. * 24 hr trend..................Little change. * Max Humidity....................59-69 pct. * 24 hr trend..................8 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 15 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................10 percent west portion...20 percent east portion. * Chance of Thunder...............14 percent. .THURSDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms in the morning becoming chance of showers and thunderstorms in the afternoon. * Max Temperature.................94-100. * 24 hr trend..................3 degrees cooler. * Min Humidity....................32-41 pct. * 24 hr trend..................9 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the morning becoming east 5 to 15 mph in the afternoon. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................20 percent. * Chance of Thunder...............36 percent. * Mixing Height for Phoenix.......7300 ft AGL. * Transport Wind for Phoenix......Southwest 9 knots. * Dispersion for Phoenix..........Good. .EXTENDED... .FRIDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 72-82. Highs 88-95. South winds 5 to 15 mph. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 72-82. Highs 90-96. South winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 74-84. Highs 93-100. Southwest winds 5 to 10 mph. .MONDAY...Clear. Lows 74-84. Highs 96-102. .TUESDAY...Clear. Lows 73-83. Highs 97-104. $$ AZZ131-CAZ231-032030- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 117 AM MST Wed Sep 3 2025 /117 AM PDT Wed Sep 3 2025/ .TODAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................98-103. * 24 hr trend..................4 degrees warmer. * Min Humidity....................26-33 pct. * 24 hr trend..................5 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 20 mph. * Chance of Precip................0 percent in the morning becoming 10 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............12 percent. * Mixing Height for Yuma..........7500 ft AGL. * Transport Wind for Yuma.........South 6 knots. * Dispersion for Yuma.............Fair. .TONIGHT... * Sky/weather.....................Mostly clear. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................78-83. * 24 hr trend..................Little change. * Max Humidity....................65-79 pct. * 24 hr trend..................10 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming south 5 to 15 mph after midnight. * Chance of Precip................10 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............12 percent. .THURSDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................97-102. * 24 hr trend..................Little change. * Min Humidity....................33-43 pct. * 24 hr trend..................9 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................10 percent in the morning becoming 20 percent in the afternoon. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............20 percent. * Mixing Height for Yuma..........5500 ft AGL. * Transport Wind for Yuma.........South 17 knots. * Dispersion for Yuma.............Very good. .EXTENDED... .FRIDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 75-81. Highs 93-98. South winds 10 to 20 mph. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 75-81. Highs 94-99. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 75-81. Highs 97-102. South winds 5 to 15 mph. .MONDAY...Clear. Lows 72-80. Highs 99-104. .TUESDAY...Clear. Lows 71-78. Highs 100-105. $$ AZZ133-032030- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 117 AM MST Wed Sep 3 2025 .TODAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................87-101. * 24 hr trend..................Little change. * Min Humidity....................17-26 pct. * 24 hr trend..................3 pct wetter. * Winds - 20 foot...Slope/Valley..Southeast 5 to 10 mph in the morning becoming south in the afternoon. * Winds...10000 FT MSL............Southeast 10 to 20 mph. * Chance of Precip................0 percent in the morning becoming 10 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............13 percent. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers and thunderstorms. * Min Temperature.................61-77. * 24 hr trend..................Little change. * Max Humidity....................53-68 pct. * 24 hr trend..................14 pct wetter. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............South 10 to 15 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............15 percent. .THURSDAY... * Sky/weather.....................Partly sunny. Slight chance of showers and thunderstorms in the morning becoming chance of showers and thunderstorms in the afternoon. * Max Temperature.................84-97. * 24 hr trend..................4 degrees cooler. * Min Humidity....................26-39 pct. * 24 hr trend..................11 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southeast 5 to 15 mph. * Chance of Precip................40 percent. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............42 percent. .EXTENDED... .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows 58-73. Highs 77-91. South winds 5 to 15 mph. .SATURDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 58-75. Highs 77-92. Southwest winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 58-76. Highs 82-96. West winds 5 to 15 mph. .MONDAY...Clear. Lows 59-76. Highs 84-99. .TUESDAY...Clear. Lows 59-75. Highs 86-100. $$ CAZ232-032030- Imperial County And Eastern Riverside County- 117 AM PDT Wed Sep 3 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.................94-103. * 24 hr trend..................8 degrees warmer. * Min Humidity....................24-34 pct. * 24 hr trend..................9 pct drier. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............South 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................0 percent in the morning becoming 10 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............11 percent. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................77-84. * 24 hr trend..................Little change. * Max Humidity....................53-79 pct. * 24 hr trend..................5 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 in the evening becoming east after midnight. * Chance of Precip................10 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............8 percent. .THURSDAY... * Sky/weather.....................Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................93-102. * 24 hr trend..................Little change. * Min Humidity....................30-42 pct. * 24 hr trend..................7 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............Southeast 5 to 15 mph. * Chance of Precip................0 percent in the morning becoming 20 percent in the afternoon. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............16 percent. .EXTENDED... .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 75-82. Highs 89-99. South winds 5 to 15 mph. .SATURDAY...Mostly clear. Lows 74-81. Highs 91-100. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 74-81. Highs 93-103. South winds 5 to 15 mph. .MONDAY...Clear. Lows 73-79. Highs 94-103. .TUESDAY...Clear. Lows 72-78. Highs 94-104. $$ CAZ230-032030- Joshua Tree National Park- 117 AM PDT Wed Sep 3 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.................84-96. * 24 hr trend..................8 degrees warmer. * Min Humidity....................27-37 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Northwest 5 to 10 mph in the morning becoming south in the afternoon. * Winds...10000 FT MSL............South 5 to 15 mph in the morning becoming light and variable in the afternoon. * Chance of Precip................10 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. * Min Temperature.................67-79. * 24 hr trend..................3 degrees warmer. * Max Humidity....................52-64 pct. * 24 hr trend..................6 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Light and variable. * Chance of Precip................10 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............8 percent. .THURSDAY... * Sky/weather.....................Sunny in the morning becoming partly sunny in the afternoon. Slight chance of showers and thunderstorms in the afternoon. * Max Temperature.................84-96. * 24 hr trend..................Little change. * Min Humidity....................33-41 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 20 percent in the afternoon. * CWR (>= 0.10 IN)................10 percent. * Chance of Thunder...............17 percent. .EXTENDED... .FRIDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 64-77. Highs 80-93. South winds 5 to 15 mph. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 63-75. Highs 81-94. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 63-75. Highs 83-97. Southwest winds 5 to 15 mph. .MONDAY...Clear. Lows 63-74. Highs 84-97. .TUESDAY...Clear. Lows 62-73. Highs 84-98. $$ .8 TO 10 DAY OUTLOOK...Wednesday September 10th through Friday September 12th: Near to above normal temperatures and below median precipitation.