005  
FNUS55 KPSR 250928  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
228 AM MST SAT JAN 25 2020  
   
DISCUSSION
 
 
HIGH PRESSURE ALOFT WILL DOMINATE THE DISTRICTS THIS WEEKEND,  
ALLOWING FOR ABOVE NORMAL HIGH TEMPERATURES WITH WARMER DESERTS  
SITTING IN THE LOW TO MIDDLE 70S EACH DAY. THERE WILL BE PERIODS  
OF HIGH CLOUDS BUT STILL PLENTY OF SUNSHINE DURING THE DAY.  
HUMIDITY WILL REMAIN ELEVATED, WITH MINIMUM RH AS LOW AS 20  
PERCENT OVER PORTIONS OF THE FAR SOUTHEAST CALIFORNIA DESERTS TO  
AROUND 35 PERCENT IN THE CENTRAL ARIZONA DESERTS. LOOK FOR  
CONTINUED LIGHT WINDS TODAY AND SUNDAY.  
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 
AZZ132-252130-  
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-  
228 AM MST SAT JAN 25 2020  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................68-73.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................25-35 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING NORTHWEST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............NORTHWEST 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........4 LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR PHOENIX.......3200 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......WEST 3 KNOTS.  
* DISPERSION FOR PHOENIX..........POOR.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................43-53.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................51-83 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE  
EVENING BECOMING MOSTLY DOWNSLOPE/DOWNVALLEY AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING  
BECOMING WEST 5 TO 15 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................68-73.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................26-34 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING  
BECOMING SOUTH IN THE AFTERNOON.  
* WINDS...10000 FT MSL............WEST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........4 LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR PHOENIX.......4600 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 4 KNOTS.  
* DISPERSION FOR PHOENIX..........MARGINAL.  
 
   
EXTENDED
 
   
MONDAY
 
CLEAR. LOWS 42-52. HIGHS 67-73. NORTHWEST WINDS 10 TO  
20 MPH.    
TUESDAY
 
CLEAR. LOWS 42-52. HIGHS 66-71. NORTH WINDS 5 TO  
15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 41-51. HIGHS 64-69. NORTH WINDS  
15 TO 25 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 41-51. HIGHS 64-70.    
FRIDAY
 
MOSTLY CLEAR. LOWS 41-51. HIGHS 67-72.  
 

 
 
AZZ131-CAZ231-252130-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
228 AM MST SAT JAN 25 2020 /128 AM PST SAT JAN 25 2020/  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................72-76.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................22-27 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTH 10 TO 15 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..........3600 FT AGL.  
* TRANSPORT WIND FOR YUMA.........NORTH 6 KNOTS.  
* DISPERSION FOR YUMA.............FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................44-51.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................50-70 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE EVENING  
BECOMING MOSTLY DOWNSLOPE/DOWNVALLEY AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING  
BECOMING WEST 5 TO 15 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................72-76.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................24-29 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING  
BECOMING SOUTH IN THE AFTERNOON.  
* 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.........3 VERY LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR YUMA..........2700 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTH 7 KNOTS.  
* DISPERSION FOR YUMA.............MARGINAL.  
 
   
EXTENDED
 
   
MONDAY
 
CLEAR. LOWS 43-52. HIGHS 72-76. NORTH WINDS 10 TO  
20 MPH.    
TUESDAY
 
CLEAR. LOWS 43-53. HIGHS 71-75. NORTH WINDS 5 TO  
15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 42-53. HIGHS 68-72. NORTH WINDS  
15 TO 25 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 42-52. HIGHS 68-72.    
FRIDAY
 
MOSTLY CLEAR. LOWS 42-53. HIGHS 72-76.  
 

 
 
AZZ133-252130-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
228 AM MST SAT JAN 25 2020  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................58-69.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................29-39 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING NORTHWEST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............NORTHWEST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........4 LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................33-48.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................52-73 PCT.  
* 24 HR TREND..................8 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE EVENING  
BECOMING NORTHEAST AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING  
BECOMING WEST 10 TO 20 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................57-69.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................30-41 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTHWEST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............WEST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........4 LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
MONDAY
 
MOSTLY CLEAR. LOWS 30-48. HIGHS 54-67. NORTHWEST WINDS  
5 TO 15 MPH.    
TUESDAY
 
CLEAR. LOWS 30-45. HIGHS 55-67. NORTH WINDS 5 TO  
15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 29-45. HIGHS 51-63. NORTH WINDS  
10 TO 20 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 29-44. HIGHS 51-65.    
FRIDAY
 
MOSTLY CLEAR. LOWS 29-47. HIGHS 55-68.  
 

 
 
CAZ232-252130-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
128 AM PST SAT JAN 25 2020  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................69-77.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................22-29 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 5 TO 15 MPH IN THE  
MORNING BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.  
* 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.................46-54.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................44-72 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING  
BECOMING WEST 5 TO 15 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................69-77.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................23-33 PCT.  
* 24 HR TREND..................3 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 10 MPH IN THE MORNING  
BECOMING SOUTH 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.........5 MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
MONDAY
 
CLEAR. LOWS 45-54. HIGHS 68-77. NORTHWEST WINDS 10 TO  
20 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 45-54. HIGHS 69-77. NORTH WINDS  
5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 45-54. HIGHS 65-75. NORTH WINDS  
15 TO 25 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 45-53. HIGHS 65-74.    
FRIDAY
 
MOSTLY CLEAR. LOWS 45-56. HIGHS 69-77.  
 

 
 
CAZ230-252130-  
JOSHUA TREE NATIONAL PARK-  
128 AM PST SAT JAN 25 2020  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................61-72.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................21-28 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 5 TO 15 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.................43-50.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................47-58 PCT.  
* 24 HR TREND..................5 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING  
BECOMING WEST 5 TO 15 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................60-73.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................24-35 PCT.  
* 24 HR TREND..................4 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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.  
* HAINES HIGH LEVEL INDEX.........3 VERY LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
MONDAY
 
CLEAR. LOWS 40-49. HIGHS 59-71. NORTH WINDS 10 TO  
20 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 40-48. HIGHS 60-71. NORTHWEST WINDS  
5 TO 15 MPH.    
WEDNESDAY
 
BREEZY. MOSTLY CLEAR. LOWS 38-48. HIGHS 56-68. NORTH  
WINDS 20 TO 30 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 38-48. HIGHS 57-68.    
FRIDAY
 
MOSTLY CLEAR. LOWS 41-51. HIGHS 62-74.  
 

 
   
8 TO 10 DAY OUTLOOK
 
SATURDAY FEBRUARY 1ST THROUGH MONDAY  
FEBRUARY 3RD: ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN  
PRECIPITATION.  
 
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