959  
FNUS55 KPSR 230929  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
229 AM MST TUE JAN 23 2018  
   
DISCUSSION
 
 
CLEAR SKIES AND WARMER TEMPERATURES CAN BE EXPECTED TODAY AND  
WEDNESDAY. IN FACT, LOWER DESERT HIGHS WILL BE WELL INTO THE 70S  
BY WEDNESDAY. HUMIDITIES WILL DECLINE EAST OF THE LOWER COLORADO  
RIVER VALLEY BUT INCREASE SOMEWHAT NEAR AND WEST OF THERE. EXPECT  
SOME MINOR DAYTIME BREEZINESS TODAY FROM THE THE NORTH AND  
NORTHEAST. BREEZINESS WILL BE A BIT STRONGER WEDNESDAY OVER  
SOUTH-CENTRAL AND SOUTHWEST ARIZONA (FAVORING EASTERLY DIRECTIONS)  
BUT WEAKER NEAR AND WEST OF THE LOWER COLORADO RIVER VALLEY.  
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 
AZZ132-232130-  
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-  
229 AM MST TUE JAN 23 2018  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................65-69.  
* 24 HR TREND..................8 DEGREES WARMER.  
* MIN HUMIDITY....................11-16 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTH 15 TO 25 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR PHOENIX.......4200 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......NORTHEAST 8 KNOTS.  
* DISPERSION FOR PHOENIX..........FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................36-47.  
* 24 HR TREND..................5 DEGREES WARMER.  
* MAX HUMIDITY....................25-46 PCT.  
* 24 HR TREND..................6 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHEAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
WEDNESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................69-73.  
* 24 HR TREND..................4 DEGREES WARMER.  
* MIN HUMIDITY....................10-15 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR PHOENIX.......3900 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......EAST 15 KNOTS.  
* DISPERSION FOR PHOENIX..........GOOD.  
 
   
EXTENDED
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS 39-49. HIGHS 69-73. SOUTHEAST  
WINDS 5 TO 15 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS 37-49. HIGHS 64-69. NORTHWEST WINDS  
5 TO 10 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 37-51. HIGHS 67-72. NORTH WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 40-54. HIGHS 72-77.    
MONDAY
 
PARTLY CLOUDY. LOWS 43-54. HIGHS 73-78.  
 

 
 
AZZ133-232130-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
229 AM MST TUE JAN 23 2018  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................52-67.  
* 24 HR TREND..................7 DEGREES WARMER.  
* MIN HUMIDITY....................14-21 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHEAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................27-42.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MAX HUMIDITY....................28-46 PCT.  
* 24 HR TREND..................8 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............EAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
WEDNESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................56-70.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................12-17 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..EAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS 30-46. HIGHS 57-71. SOUTHEAST  
WINDS 5 TO 15 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS 30-45. HIGHS 55-67. SOUTH WINDS 5 TO  
15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 30-48. HIGHS 58-70. NORTHEAST  
WINDS 5 TO 10 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 32-50. HIGHS 62-75.    
MONDAY
 
MOSTLY CLEAR. LOWS 34-52. HIGHS 62-76.  
 

 
 
AZZ131-CAZ231-232130-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
229 AM MST TUE JAN 23 2018 /129 AM PST TUE JAN 23 2018/  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................65-70.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................14-19 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 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.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR YUMA..........2600 FT AGL.  
* TRANSPORT WIND FOR YUMA.........NORTH 8 KNOTS.  
* DISPERSION FOR YUMA.............FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................35-47.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................34-64 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............EAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
WEDNESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................68-74.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................12-17 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR YUMA..........2800 FT AGL.  
* TRANSPORT WIND FOR YUMA.........NORTH 11 KNOTS.  
* DISPERSION FOR YUMA.............FAIR.  
 
   
EXTENDED
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS 37-48. HIGHS 69-74. SOUTH WINDS  
5 TO 15 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS 38-48. HIGHS 65-70. NORTHWEST WINDS  
5 TO 15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 38-51. HIGHS 67-73. NORTH WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 40-53. HIGHS 72-77.    
MONDAY
 
PARTLY CLOUDY. LOWS 42-55. HIGHS 73-79.  
 

 
 
CAZ230-232130-  
JOSHUA TREE NATIONAL PARK-  
129 AM PST TUE JAN 23 2018  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................56-67.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................17-22 PCT.  
* 24 HR TREND..................3 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTH 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................36-43.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................32-48 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
WEDNESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................58-68.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................13-18 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTHEAST IN THE AFTERNOON.  
* 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.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
THURSDAY
 
PARTLY CLOUDY. LOWS 36-44. HIGHS 56-67. SOUTHWEST  
WINDS 10 TO 20 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS 36-44. HIGHS 53-64. NORTHWEST WINDS  
5 TO 15 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS 36-47. HIGHS 58-68. NORTH WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
SUNDAY
 
PARTLY CLOUDY. LOWS 39-49. HIGHS 64-72.    
MONDAY
 
PARTLY CLOUDY. LOWS 41-50. HIGHS 65-74.  
 

 
 
CAZ232-232130-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
129 AM PST TUE JAN 23 2018  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................63-71.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................15-24 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTH 15 TO 25 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................36-48.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................33-70 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHEAST 5 TO 15 MPH IN THE  
EVENING BECOMING LIGHT AND VARIABLE AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
WEDNESDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................64-72.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................13-23 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTH 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS 37-49. HIGHS 63-73. WEST WINDS  
10 TO 20 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS 38-49. HIGHS 61-69. NORTHWEST WINDS  
5 TO 15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 38-51. HIGHS 64-72. NORTH WINDS  
5 TO 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 40-53. HIGHS 68-76.    
MONDAY
 
PARTLY CLOUDY. LOWS 43-55. HIGHS 69-78.  
 

 
   
8 TO 10 DAY OUTLOOK
 
TUESDAY JANUARY 30TH THROUGH THURSDAY  
FEBRUARY 1ST: ABOVE AVERAGE TEMPERATURES AND BELOW MEDIAN  
PRECIPITATION.  
 
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