355  
FNUS55 KPSR 272024  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
124 PM MST SUN APR 27 2025  
   
DISCUSSION
 
 
COOLER TEMPERATURES MONDAY WILL WARM BACK INTO A SEASONAL NORMAL  
RANGE TUESDAY RESULTING IN MINIMUM AFTERNOON HUMIDITY VALUES IN A  
15-25% RANGE TO FALL SOLIDLY INTO THE TEENS. THIS WILL FOLLOW  
GENERALLY FAIR TO GOOD OVERNIGHT RECOVERY OF 30-60%. WINDS WILL BE  
MUCH WEAKER THAN THE PAST SEVERAL DAYS, HOWEVER THE TYPICAL  
UPSLOPE GUSTS 20-25 MPH WILL BE COMMON, ESPECIALLY NEAR TERRAIN  
FEATURES.  
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 
AZZ132-280830-  
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-  
124 PM MST SUN APR 27 2025  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................48-58.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................40-61 PCT.  
* 24 HR TREND..................6 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 20 TO 30 MPH IN THE EVENING  
BECOMING SOUTHWEST 10 TO 20 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................76-82.  
* 24 HR TREND..................5 DEGREES WARMER.  
* MIN HUMIDITY....................14-18 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING  
BECOMING WEST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* MIXING HEIGHT FOR PHOENIX.......8400 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......WEST 6 KNOTS.  
* DISPERSION FOR PHOENIX..........GOOD.  
   
MONDAY NIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................53-63.  
* 24 HR TREND..................5 DEGREES WARMER.  
* MAX HUMIDITY....................33-45 PCT.  
* 24 HR TREND..................11 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 5 TO 15 MPH IN THE  
EVENING BECOMING NORTHEAST AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................82-88.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................12-16 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* MIXING HEIGHT FOR PHOENIX.......11400 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......WEST 9 KNOTS.  
* DISPERSION FOR PHOENIX..........EXCELLENT.  
 
   
EXTENDED
 
   
WEDNESDAY
 
MOSTLY CLEAR. LOWS 56-66. HIGHS 85-92. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
THURSDAY
 
MOSTLY CLEAR. LOWS 57-67. HIGHS 86-92. SOUTH WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
FRIDAY
 
MOSTLY CLEAR. LOWS 57-67. HIGHS 85-92. SOUTH WINDS 5 TO  
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SATURDAY
 
MOSTLY CLEAR. LOWS 52-63. HIGHS 84-91.    
SUNDAY
 
NOT AS WARM. MOSTLY CLEAR. LOWS 47-58. HIGHS 69-76.  
 

 
 
AZZ131-CAZ231-280830-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
124 PM MST SUN APR 27 2025 /124 PM PDT SUN APR 27 2025/  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................47-52.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................59-77 PCT.  
* 24 HR TREND..................3 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 15 TO 25 MPH IN THE EVENING  
BECOMING 5 TO 15 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................78-83.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................15-21 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 5 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* MIXING HEIGHT FOR YUMA..........7700 FT AGL.  
* TRANSPORT WIND FOR YUMA.........WEST 6 KNOTS.  
* DISPERSION FOR YUMA.............GOOD.  
   
MONDAY NIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................53-58.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MAX HUMIDITY....................40-62 PCT.  
* 24 HR TREND..................17 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTH 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................86-91.  
* 24 HR TREND..................8 DEGREES WARMER.  
* MIN HUMIDITY....................12-16 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTH 10 TO 20 MPH IN THE MORNING  
BECOMING NORTHWEST 5 TO 15 MPH IN THE AFTERNOON.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* MIXING HEIGHT FOR YUMA..........10000 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 7 KNOTS.  
* DISPERSION FOR YUMA.............GOOD.  
 
   
EXTENDED
 
   
WEDNESDAY
 
MOSTLY CLEAR. LOWS 58-63. HIGHS 89-94. SOUTH WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
THURSDAY
 
MOSTLY CLEAR. LOWS 58-63. HIGHS 88-93. SOUTH WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
FRIDAY
 
CLEAR. LOWS 58-63. HIGHS 88-93. SOUTH WINDS 5 TO  
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SATURDAY
 
MOSTLY CLEAR. LOWS 52-62. HIGHS 86-91.    
SUNDAY
 
NOT AS WARM. MOSTLY CLEAR. LOWS 50-56. HIGHS 72-77.  
 

 
 
AZZ133-280830-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
124 PM MST SUN APR 27 2025  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................36-50.  
* 24 HR TREND..................3 DEGREES COOLER.  
* MAX HUMIDITY....................36-47 PCT.  
* 24 HR TREND..................12 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH IN THE EVENING  
BECOMING NORTH 5 TO 10 MPH AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............SOUTHWEST 25 TO 35 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................65-78.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................11-17 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 10 MPH IN THE MORNING  
BECOMING SOUTHWEST 5 TO 15 MPH IN THE AFTERNOON.  
* WINDS...10000 FT MSL............SOUTHWEST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
MONDAY NIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................40-55.  
* 24 HR TREND..................4 DEGREES WARMER.  
* MAX HUMIDITY....................31-43 PCT.  
* 24 HR TREND..................5 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING  
BECOMING NORTHEAST AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............WEST 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................68-82.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................12-18 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
 
   
EXTENDED
 
   
WEDNESDAY
 
MOSTLY CLEAR. LOWS 44-60. HIGHS 72-85. WEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
THURSDAY
 
MOSTLY CLEAR. LOWS 46-60. HIGHS 74-88. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
FRIDAY
 
MOSTLY CLEAR. LOWS 46-60. HIGHS 75-89. SOUTHWEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
SATURDAY
 
MOSTLY CLEAR. LOWS 46-60. HIGHS 74-87.    
SUNDAY
 
COOLER. MOSTLY CLEAR. LOWS 37-57. HIGHS 61-74.  
 

 
 
CAZ232-280830-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
124 PM PDT SUN APR 27 2025  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................49-55.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................50-71 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................74-82.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................15-24 PCT.  
* 24 HR TREND..................5 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 5 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
MONDAY NIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................55-62.  
* 24 HR TREND..................7 DEGREES WARMER.  
* MAX HUMIDITY....................35-66 PCT.  
* 24 HR TREND..................14 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHEAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................83-91.  
* 24 HR TREND..................9 DEGREES WARMER.  
* MIN HUMIDITY....................11-18 PCT.  
* 24 HR TREND..................5 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTH 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
 
   
EXTENDED
 
   
WEDNESDAY
 
MOSTLY CLEAR. LOWS 59-66. HIGHS 84-94. SOUTHWEST  
WINDS 10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
THURSDAY
 
MOSTLY CLEAR. LOWS 59-65. HIGHS 83-92. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
FRIDAY
 
CLEAR. LOWS 58-65. HIGHS 84-93. SOUTHWEST WINDS 5 TO  
15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 51-65. HIGHS 79-89.    
SUNDAY
 
NOT AS WARM. MOSTLY CLEAR. LOWS 49-57. HIGHS 67-75.  
 

 
 
CAZ230-280830-  
JOSHUA TREE NATIONAL PARK-  
124 PM PDT SUN APR 27 2025  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................39-51.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MAX HUMIDITY....................54-70 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 5 TO 15 MPH IN THE EVENING  
BECOMING LIGHT AND VARIABLE AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................66-78.  
* 24 HR TREND..................9 DEGREES WARMER.  
* MIN HUMIDITY....................17-25 PCT.  
* 24 HR TREND..................8 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHEAST 5 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
MONDAY NIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................50-59.  
* 24 HR TREND..................10 DEGREES WARMER.  
* MAX HUMIDITY....................36-46 PCT.  
* 24 HR TREND..................21 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTH 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................73-86.  
* 24 HR TREND..................7 DEGREES WARMER.  
* MIN HUMIDITY....................12-19 PCT.  
* 24 HR TREND..................5 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
 
   
EXTENDED
 
   
WEDNESDAY
 
MOSTLY CLEAR. LOWS 51-62. HIGHS 73-87. SOUTHWEST  
WINDS 10 TO 20 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 51-62. HIGHS 73-86. SOUTHWEST  
WINDS 5 TO 15 MPH.    
FRIDAY
 
CLEAR. LOWS 50-62. HIGHS 74-87. WEST WINDS 10 TO  
20 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 39-61. HIGHS 68-84.    
SUNDAY
 
COOLER. MOSTLY CLEAR. LOWS 39-52. HIGHS 55-70.  
 

 
   
8 TO 10 DAY OUTLOOK
 
MONDAY MAY 5TH THROUGH WEDNESDAY MAY 7TH:  
BELOW NORMAL TEMPERATURES AND ABOVE MEDIAN PRECIPITATION.  
 
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