735  
FNUS55 KPSR 291106  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
406 AM MST THU FEB 29 2024  
   
DISCUSSION
 
 
DRY WEATHER AND ABOVE NORMAL TEMPERATURES CAN BE EXPECTED THROUGH  
THE END OF THE WEEK, WITH BREEZY CONDITIONS IN THE AFTERNOON AND  
EARLY EVENING ACROSS THE WESTERN DISTRICTS. SOUTHWESTERLY GUSTS  
BETWEEN 25-30 MPH CAN BE EXPECTED TODAY AND FRIDAY ACROSS PORTIONS  
OF SOUTHEAST CALIFORNIA. ELSEWHERE, WINDS ARE EXPECTED TO REMAIN  
LIGHT (BELOW 15 MPH SUSTAINED) AND FOLLOW THEIR DIURNAL  
TENDENCIES. MINRHS WILL BOTTOM OUT AROUND 25-35% TODAY, WITH  
SLIGHTLY HIGHER VALUES IN THE EASTERN DISTRICTS, WHEREAS MINRHS  
WILL BE MORE UNIFORMLY BETWEEN 20-30% ON FRIDAY.  
   
..THUNDERSTORMS IMPLY GUSTY WINDS
 
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 
AZZ132-292315-  
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-  
406 AM MST THU FEB 29 2024  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................71-77.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................27-34 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* 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............WEST 5 TO 15 MPH IN THE MORNING  
BECOMING 15 TO 25 MPH IN THE AFTERNOON.  
* 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.......7800 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 8 KNOTS.  
* DISPERSION FOR PHOENIX..........GOOD.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................48-58.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................64-87 PCT.  
* 24 HR TREND..................11 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 20 TO 30 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................72-80.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................22-27 PCT.  
* 24 HR TREND..................6 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTH 5 TO 15 MPH IN THE AFTERNOON.  
* WINDS...10000 FT MSL............WEST 25 TO 35 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.......8400 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 12 KNOTS.  
* DISPERSION FOR PHOENIX..........EXCELLENT.  
 
   
EXTENDED
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 46-56. HIGHS 68-75. SOUTHWEST  
WINDS 15 TO 25 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 43-53. HIGHS 66-72. SOUTHWEST WINDS  
10 TO 20 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS 43-53. HIGHS 67-73. WEST WINDS 5 TO  
15 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 44-54. HIGHS 69-75.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 45-55. HIGHS 70-76.  
 

 
 
AZZ131-CAZ231-292315-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
406 AM MST THU FEB 29 2024 /306 AM PST THU FEB 29 2024/  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................76-81.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................23-32 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 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.  
* MIXING HEIGHT FOR YUMA..........7200 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTH 12 KNOTS.  
* DISPERSION FOR YUMA.............VERY GOOD.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................48-53.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................70-87 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 25 TO 35 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................75-80.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................20-27 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 25 TO 35 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 YUMA..........5600 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 10 KNOTS.  
* DISPERSION FOR YUMA.............GOOD.  
 
   
EXTENDED
 
   
SATURDAY
 
BREEZY. MOSTLY CLEAR. PATCHY BLOWING DUST. LOWS  
48-53. HIGHS 71-76. SOUTHWEST WINDS 20 TO 30 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 44-53. HIGHS 68-73. SOUTHWEST WINDS  
15 TO 25 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS 43-50. HIGHS 69-74. WEST WINDS 10 TO  
20 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 43-50. HIGHS 71-76.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 45-50. HIGHS 72-77.  
 

 
 
AZZ133-292315-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
406 AM MST THU FEB 29 2024  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................56-70.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................31-48 PCT.  
* 24 HR TREND..................6 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............WEST 10 TO 20 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.....................CLEAR.  
* MIN TEMPERATURE.................35-50.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................66-91 PCT.  
* 24 HR TREND..................16 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 10 MPH IN THE  
EVENING BECOMING SOUTHEAST AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............WEST 20 TO 30 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................59-73.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................25-34 PCT.  
* 24 HR TREND..................11 PCT DRIER.  
* 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............WEST 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.  
 
   
EXTENDED
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 37-50. HIGHS 58-71. SOUTH WINDS  
15 TO 25 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 35-48. HIGHS 55-67. SOUTHWEST WINDS  
10 TO 20 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS 34-47. HIGHS 56-68. SOUTHWEST WINDS  
5 TO 15 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 34-47. HIGHS 58-70.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 34-47. HIGHS 58-71.  
 

 
 
CAZ232-292315-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
306 AM PST THU FEB 29 2024  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................71-81.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................21-32 PCT.  
* 24 HR TREND..................5 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 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.....................CLEAR.  
* MIN TEMPERATURE.................48-53.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................57-79 PCT.  
* 24 HR TREND..................8 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 25 TO 35 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................69-79.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................21-32 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 25 TO 35 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.  
 
   
EXTENDED
 
   
SATURDAY
 
BREEZY. MOSTLY CLEAR. PATCHY BLOWING DUST. LOWS  
47-55. HIGHS 64-74. SOUTHWEST WINDS 20 TO 30 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 44-55. HIGHS 63-72. SOUTHWEST WINDS  
15 TO 25 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS 44-51. HIGHS 64-73. WEST WINDS 10 TO  
20 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 45-52. HIGHS 67-76.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 46-53. HIGHS 67-76.  
 

 
 
CAZ230-292315-  
JOSHUA TREE NATIONAL PARK-  
306 AM PST THU FEB 29 2024  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................59-75.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................22-39 PCT.  
* 24 HR TREND..................11 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 10 TO 20 MPH.  
* WINDS...10000 FT MSL............WEST 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.................37-47.  
* 24 HR TREND..................3 DEGREES COOLER.  
* MAX HUMIDITY....................58-80 PCT.  
* 24 HR TREND..................14 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.  
* WINDS...10000 FT MSL............WEST 20 TO 30 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................56-73.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................23-42 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 10 TO 20 MPH.  
* WINDS...10000 FT MSL............WEST 25 TO 35 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.  
 
   
EXTENDED
 
   
SATURDAY
 
BREEZY. MOSTLY CLEAR. LOWS 37-48. HIGHS 52-67.  
SOUTHWEST WINDS 20 TO 30 MPH.    
SUNDAY
 
BREEZY. MOSTLY CLEAR. LOWS 33-47. HIGHS 51-67.  
SOUTHWEST WINDS 20 TO 30 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS 33-46. HIGHS 54-67. WEST WINDS 10 TO  
20 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 36-47. HIGHS 57-70.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 36-47. HIGHS 57-70.  
 

 
   
8 TO 10 DAY OUTLOOK
 
THURSDAY MARCH 7TH THROUGH SATURDAY MARCH  
9TH: NEAR NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.  
 
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