Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
550 FNUS55 KPSR 180802 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 102 AM MST Fri Oct 18 2024 .DISCUSSION... A strong, but somewhat dry weather system will move through the region through Saturday dropping temperatures to below normal. There will also be chances for showers and isolated thunderstorms today across south-central and eastern AZ with lingering showers over higher terrain areas on Saturday. Breezy to windy conditions are also expected today with afternoon gusts of 30-40 mph in many locations. After a brief bump in RHs this morning, drier air surging eastward throughout the area will drop RHs into the teens this afternoon across the lower deserts leading to a period of elevated fire danger conditions. RHs Saturday will improve slightly with MinRHs mostly between 20-25%, while winds drop off considerably. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-182015- 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- 102 AM MST Fri Oct 18 2024 .TODAY... * Sky/weather.....................Sunny. Chance of showers in the morning. * Max Temperature.................69-78. * 24 hr trend..................13 degrees cooler. * Min Humidity....................11-24 pct. * 24 hr trend..................11 pct drier. * Winds - 20 foot...Slope/Valley..West 10 to 20 mph. * Winds...10000 FT MSL............West 35 to 45 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent west portion...30 percent east portion. * LAL.............................1. * Haines High Level Index.........4 low potential for large plume dominated fire growth. * Mixing Height for Phoenix.......9100 ft AGL. * Transport Wind for Phoenix......West 26 knots. * Dispersion for Phoenix..........Excellent. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................50-60. * 24 hr trend..................9 degrees cooler. * Max Humidity....................27-53 pct. * 24 hr trend..................22 pct drier. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Northwest 30 to 40 mph in the evening becoming 20 to 30 mph after midnight. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. .SATURDAY... * Sky/weather.....................Mostly sunny. * Max Temperature.................72-79. * 24 hr trend..................Little change. * Min Humidity....................18-26 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..Northeast 5 to 15 mph. * Winds...10000 FT MSL............North 20 to 30 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. * Haines High Level Index.........4 low potential for large plume dominated fire growth. * Mixing Height for Phoenix.......8900 ft AGL. * Transport Wind for Phoenix......Northeast 9 knots. * Dispersion for Phoenix..........Very good. .EXTENDED... .SUNDAY...Clear. Lows 50-60. Highs 77-84. Northeast winds 5 to 10 mph. .MONDAY...Clear. Lows 52-62. Highs 84-89. Northeast winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 55-65. Highs 89-94. North winds 5 to 10 mph. Minimum relative humidity may be lower than 15 percent. .WEDNESDAY...Clear. Lows 58-68. Highs 92-97. .THURSDAY...Mostly clear. Lows 61-71. Highs 93-98. $$ AZZ131-CAZ231-182015- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 102 AM MST Fri Oct 18 2024 /102 AM PDT Fri Oct 18 2024/ .TODAY... * Sky/weather.....................Sunny. Patchy blowing dust in the afternoon. * Max Temperature.................75-80. * 24 hr trend..................12 degrees cooler. * Min Humidity....................10-18 pct. * 24 hr trend..................16 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 15 to 25 mph. * Winds...10000 FT MSL............Northwest 35 to 45 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. * Haines High Level Index.........4 low potential for large plume dominated fire growth. * Mixing Height for Yuma..........6100 ft AGL. * Transport Wind for Yuma.........North 26 knots. * Dispersion for Yuma.............Excellent. .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................51-56. * 24 hr trend..................7 degrees cooler. * Max Humidity....................24-52 pct. * 24 hr trend..................27 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 5 to 15 mph. * Winds...10000 FT MSL............North 35 to 45 mph in the evening becoming 25 to 35 mph after midnight. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. .SATURDAY... * Sky/weather.....................Sunny. * Max Temperature.................77-82. * 24 hr trend..................Little change. * Min Humidity....................18-26 pct. * 24 hr trend..................8 pct wetter. * Winds - 20 foot...Slope/Valley..North 5 to 15 mph. * Winds...10000 FT MSL............North 25 to 35 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. * Haines High Level Index.........2 very low potential for large plume dominated fire growth. * Mixing Height for Yuma..........7500 ft AGL. * Transport Wind for Yuma.........North 13 knots. * Dispersion for Yuma.............Very good. .EXTENDED... .SUNDAY...Clear. Lows 51-59. Highs 81-86. North winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 51-62. Highs 85-90. North winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 54-65. Highs 89-94. North winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .WEDNESDAY...Mostly clear. Lows 55-66. Highs 92-97. .THURSDAY...Mostly clear. Lows 58-66. Highs 93-98. $$ AZZ133-182015- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 102 AM MST Fri Oct 18 2024 .TODAY... * Sky/weather.....................Partly sunny. Chance of showers and slight chance of thunderstorms. * Max Temperature.................59-73. * 24 hr trend..................14 degrees cooler. * Min Humidity....................24-45 pct. * 24 hr trend..................13 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 10 to 20 mph. * Winds...10000 FT MSL............Southwest 40 to 50 mph. * Chance of Precip................60 percent. * CWR (>= 0.10 IN)................80 percent. * LAL.............................2. * Haines High Level Index.........2 very low potential for large plume dominated fire growth. .TONIGHT... * Sky/weather.....................Partly cloudy. Slight chance of showers after midnight. * Min Temperature.................37-53. * 24 hr trend..................10 degrees cooler. * Max Humidity....................48-73 pct. * 24 hr trend..................6 pct drier. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph in the evening becoming southeast 5 to 10 mph after midnight. * Winds...10000 FT MSL............West 20 to 30 mph in the evening becoming 10 to 20 mph after midnight. * Chance of Precip................10 percent in the evening becoming 20 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. .SATURDAY... * Sky/weather.....................Partly sunny. Slight chance of showers in the morning. chance of showers in the afternoon. * Max Temperature.................55-71. * 24 hr trend..................3 degrees cooler. * Min Humidity....................25-39 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..East 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 15 mph. * Chance of Precip................20 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. * Haines High Level Index.........3 very low potential for large plume dominated fire growth. .EXTENDED... .SUNDAY...Mostly clear. Lows 37-56. Highs 64-78. Northeast winds 5 to 15 mph. .MONDAY...Clear. Lows 40-60. Highs 72-86. Northeast winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 45-64. Highs 78-92. Northeast winds 5 to 15 mph. .WEDNESDAY...Clear. Lows 49-66. Highs 81-96. .THURSDAY...Mostly clear. Lows 52-67. Highs 81-96. $$ CAZ232-182015- Imperial County And Eastern Riverside County- 102 AM PDT Fri Oct 18 2024 .TODAY... * Sky/weather.....................Sunny. * Max Temperature.................70-82. * 24 hr trend..................10 degrees cooler. * Min Humidity....................9-13 pct. * 24 hr trend..................15 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 15 to 25 mph. * Winds...10000 FT MSL............Northwest 30 to 40 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. * Haines High Level Index.........4 low potential for large plume dominated fire growth. .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................54-62. * 24 hr trend..................4 degrees cooler. * Max Humidity....................19-34 pct. * 24 hr trend..................29 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 5 to 15 mph. * Winds...10000 FT MSL............North 25 to 35 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. .SATURDAY... * Sky/weather.....................Sunny. * Max Temperature.................74-84. * 24 hr trend..................3 degrees warmer. * Min Humidity....................14-20 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..North 5 to 15 mph. * Winds...10000 FT MSL............North 25 to 35 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. * Haines High Level Index.........3 very low potential for large plume dominated fire growth. .EXTENDED... .SUNDAY...Clear. Lows 55-64. Highs 77-86. North winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 56-67. Highs 81-89. North winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 59-70. Highs 86-94. Northwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .WEDNESDAY...Mostly clear. Lows 61-71. Highs 89-97. .THURSDAY...Mostly clear. Lows 62-71. Highs 89-98. $$ CAZ230-182015- Joshua Tree National Park- 102 AM PDT Fri Oct 18 2024 .TODAY... * Sky/weather.....................Sunny. * Max Temperature.................59-72. * 24 hr trend..................12 degrees cooler. * Min Humidity....................10-14 pct. * 24 hr trend..................16 pct drier. * Winds - 20 foot...Slope/Valley..Breezy. Northwest 20 to 30 mph. * Winds...10000 FT MSL............Northwest 45 to 55 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. * Haines High Level Index.........4 low potential for large plume dominated fire growth. .TONIGHT... * Sky/weather.....................Mostly clear. * Min Temperature.................44-57. * 24 hr trend..................Little change. * Max Humidity....................21-31 pct. * 24 hr trend..................29 pct drier. * Winds - 20 foot...Slope/Valley..Northwest 10 to 20 mph. * Winds...10000 FT MSL............North 30 to 40 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. .SATURDAY... * Sky/weather.....................Sunny. * Max Temperature.................64-76. * 24 hr trend..................5 degrees warmer. * Min Humidity....................16-21 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..North 10 to 20 mph. * Winds...10000 FT MSL............North 25 to 35 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * LAL.............................1. * Haines High Level Index.........2 very low potential for large plume dominated fire growth. .EXTENDED... .SUNDAY...Clear. Lows 46-58. Highs 68-79. West winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 48-62. Highs 71-83. West winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 52-64. Highs 75-87. North winds 5 to 10 mph. Minimum relative humidity may be lower than 15 percent. .WEDNESDAY...Mostly clear. Lows 54-66. Highs 79-91. .THURSDAY...Mostly clear. Lows 53-66. Highs 78-91. $$ .8 TO 10 DAY OUTLOOK...Friday October 25th through Sunday October 27th: Above normal temperatures and below median precipitation.