492  
FNUS55 KPSR 150801  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
101 AM MST SUN SEP 15 2024  
   
DISCUSSION
 
 
A WEATHER SYSTEM WILL BRUSH BY THE REGION THROUGH MONDAY, WHILE  
MOISTURE IS EXPECTED TO INCREASE ENOUGH ACROSS THE EASTERN  
DISTRICTS TO BRING CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS  
FROM THIS AFTERNOON THROUGH MONDAY AFTERNOON. THE BEST CHANCES FOR  
WETTING RAINS WILL BE OVER THE HIGHER TERRAIN EAST OF PHOENIX  
WHERE CHANCES PEAK AROUND 50% SUNDAY NIGHT. WINDS WILL  
PREDOMINATELY BE OUT OF THE SOUTH STARTING THIS AFTERNOON THROUGH  
MONDAY MORNING BEFORE TURNING SOUTHWESTERLY AND BECOMING GUSTY  
MONDAY AFTERNOON. MINRHS THROUGH MONDAY WILL RANGE FROM THE MID  
TEENS ACROSS THE WESTERN DISTRICTS TO 20-30% OVER THE EASTERN  
DISTRICTS.  
   
..THUNDERSTORMS IMPLY GUSTY WINDS
 
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 
AZZ132-152015-  
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-  
101 AM MST SUN SEP 15 2024  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................95-102.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................15-27 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTH 20 TO 30 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR PHOENIX.......8100 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 16 KNOTS.  
* DISPERSION FOR PHOENIX..........EXCELLENT.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR. SLIGHT CHANCE OF  
SHOWERS AFTER MIDNIGHT.  
* MIN TEMPERATURE.................68-78.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................51-68 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTH 25 TO 35 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
MONDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF  
SHOWERS IN THE MORNING.  
* MAX TEMPERATURE.................89-98.  
* 24 HR TREND..................5 DEGREES COOLER.  
* MIN HUMIDITY....................17-25 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 10 TO 20 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 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.  
* MIXING HEIGHT FOR PHOENIX.......9400 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 26 KNOTS.  
* DISPERSION FOR PHOENIX..........EXCELLENT.  
 
   
EXTENDED
 
   
TUESDAY
 
MOSTLY CLEAR. LOWS 59-69. HIGHS 83-91. SOUTHWEST WINDS  
5 TO 15 MPH.    
WEDNESDAY
 
CLEAR. LOWS 59-69. HIGHS 85-93. SOUTH WINDS 5 TO  
15 MPH.    
THURSDAY
 
CLEAR. LOWS 60-70. HIGHS 82-90. SOUTHWEST WINDS 5 TO  
15 MPH.    
FRIDAY
 
CLEAR. LOWS 60-70. HIGHS 86-93.    
SATURDAY
 
CLEAR. LOWS 62-72. HIGHS 91-97.  
 

 
 
AZZ131-CAZ231-152015-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
101 AM MST SUN SEP 15 2024 /101 AM PDT SUN SEP 15 2024/  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................97-102.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................15-19 PCT.  
* 24 HR TREND..................8 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 10 TO 20 MPH.  
* WINDS...10000 FT MSL............SOUTH 15 TO 25 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..........6000 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTH 12 KNOTS.  
* DISPERSION FOR YUMA.............VERY GOOD.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................67-72.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................46-59 PCT.  
* 24 HR TREND..................11 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
MONDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................89-94.  
* 24 HR TREND..................8 DEGREES COOLER.  
* MIN HUMIDITY....................19-23 PCT.  
* 24 HR TREND..................4 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 10 TO 20 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 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.  
* MIXING HEIGHT FOR YUMA..........5500 FT AGL.  
* TRANSPORT WIND FOR YUMA.........WEST 11 KNOTS.  
* DISPERSION FOR YUMA.............GOOD.  
 
   
EXTENDED
 
   
TUESDAY
 
CLEAR. LOWS 57-63. HIGHS 84-89. WEST WINDS 10 TO  
20 MPH.    
WEDNESDAY
 
CLEAR. LOWS 58-65. HIGHS 88-93. SOUTH WINDS 10 TO  
20 MPH.    
THURSDAY
 
CLEAR. LOWS 60-65. HIGHS 84-89. WEST WINDS 5 TO  
15 MPH.    
FRIDAY
 
CLEAR. LOWS 60-68. HIGHS 90-95.    
SATURDAY
 
CLEAR. LOWS 62-70. HIGHS 94-99.  
 

 
 
AZZ133-152015-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
101 AM MST SUN SEP 15 2024  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY. SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.................84-97.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................24-34 PCT.  
* 24 HR TREND..................4 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 15 TO 25 MPH.  
* CHANCE OF PRECIP................0 PERCENT IN THE MORNING BECOMING  
20 PERCENT IN THE AFTERNOON.  
* CWR (>= 0.10 IN)................10 PERCENT.  
* LAL.............................1 IN THE MORNING BECOMING 2 IN  
THE AFTERNOON.  
* HAINES HIGH LEVEL INDEX.........3 VERY LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
* SKY/WEATHER.....................PARTLY CLOUDY. SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE EVENING BECOMING CHANCE OF  
SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT.  
* MIN TEMPERATURE.................59-73.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................61-90 PCT.  
* 24 HR TREND..................20 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.  
* CHANCE OF PRECIP................50 PERCENT.  
* CWR (>= 0.10 IN)................40 PERCENT.  
* LAL.............................2 IN THE EVENING BECOMING 3 AFTER  
MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER.....................PARTLY SUNNY. SHOWERS LIKELY IN  
THE MORNING. CHANCE OF THUNDERSTORMS . CHANCE OF SHOWERS IN THE  
AFTERNOON.  
* MAX TEMPERATURE.................76-92.  
* 24 HR TREND..................6 DEGREES COOLER.  
* MIN HUMIDITY....................29-56 PCT.  
* 24 HR TREND..................13 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 10 TO 20 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 30 TO 40 MPH.  
* CHANCE OF PRECIP................60 PERCENT.  
* CWR (>= 0.10 IN)................50 PERCENT.  
* LAL.............................3.  
* HAINES HIGH LEVEL INDEX.........4 LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
TUESDAY
 
MOSTLY CLEAR WITH CHANCE OF SHOWERS. LOWS 50-69. HIGHS  
74-87. SOUTHWEST WINDS 10 TO 20 MPH.    
WEDNESDAY
 
CLEAR. LOWS 50-64. HIGHS 75-88. SOUTH WINDS 10 TO  
20 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 49-64. HIGHS 73-86. SOUTHWEST  
WINDS 10 TO 20 MPH.    
FRIDAY
 
CLEAR. LOWS 48-64. HIGHS 75-88.    
SATURDAY
 
CLEAR. LOWS 48-67. HIGHS 78-93.  
 

 
 
CAZ232-152015-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
101 AM PDT SUN SEP 15 2024  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................92-102.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................12-18 PCT.  
* 24 HR TREND..................7 PCT DRIER.  
* 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.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................64-71.  
* 24 HR TREND..................5 DEGREES COOLER.  
* MAX HUMIDITY....................42-66 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
MONDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................81-92.  
* 24 HR TREND..................10 DEGREES COOLER.  
* MIN HUMIDITY....................17-31 PCT.  
* 24 HR TREND..................8 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 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.  
 
   
EXTENDED
 
   
TUESDAY
 
CLEAR. LOWS 55-65. HIGHS 79-88. WEST WINDS 10 TO  
20 MPH.    
WEDNESDAY
 
CLEAR. LOWS 59-65. HIGHS 82-92. SOUTHWEST WINDS  
10 TO 20 MPH.    
THURSDAY
 
CLEAR. LOWS 59-67. HIGHS 79-89. WEST WINDS 5 TO  
15 MPH.    
FRIDAY
 
CLEAR. LOWS 61-72. HIGHS 85-95.    
SATURDAY
 
CLEAR. LOWS 65-74. HIGHS 90-99.  
 

 
 
CAZ230-152015-  
JOSHUA TREE NATIONAL PARK-  
101 AM PDT SUN SEP 15 2024  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................79-95.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................11-19 PCT.  
* 24 HR TREND..................11 PCT DRIER.  
* 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.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................53-65.  
* 24 HR TREND..................6 DEGREES COOLER.  
* MAX HUMIDITY....................43-64 PCT.  
* 24 HR TREND..................7 PCT WETTER.  
* 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.  
* LAL.............................1.  
   
MONDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................66-85.  
* 24 HR TREND..................12 DEGREES COOLER.  
* MIN HUMIDITY....................19-38 PCT.  
* 24 HR TREND..................12 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 10 TO 20 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 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.  
 
   
EXTENDED
 
   
TUESDAY
 
CLEAR. LOWS 44-61. HIGHS 70-83. WEST WINDS 5 TO  
15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 48-61. HIGHS 70-85. SOUTHWEST  
WINDS 5 TO 15 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 48-62. HIGHS 68-82. NORTHWEST  
WINDS 5 TO 15 MPH.    
FRIDAY
 
CLEAR. LOWS 53-65. HIGHS 74-87.    
SATURDAY
 
CLEAR. LOWS 57-68. HIGHS 79-92.  
 

 
   
8 TO 10 DAY OUTLOOK
 
SUNDAY SEPTEMBER 22ND THROUGH TUESDAY  
SEPTEMBER 24TH: NEAR NORMAL TEMPERATURES AND BELOW MEDIAN  
PRECIPITATION.  
 
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