634  
FNUS55 KPSR 270907  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
207 AM MST SAT MAY 27 2017  
   
DISCUSSION
 
 
HIGH PRESSURE WILL BUILD INTO THE AREA THROUGH THE WEEKEND LEADING  
TO WARMER HIGH TEMPERATURES AND DRIER CONDITIONS. TEMPERATURES  
WILL CLIMB BACK INTO THE TRIPLE DIGITS BY SUNDAY WHILE MINIMUM  
RELATIVE HUMIDITY VALUES WILL STAY BELOW 15 PERCENT WITH PALTRY  
OVERNIGHT RECOVERIES. HOWEVER, THE WINDS WILL STAY RELATIVELY  
LIGHT OUTSIDE OF A FEW AFTERNOON GUSTS.  
 
   
..THUNDERSTORMS IMPLY GUSTY WINDS
 
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 
AZZ132-272115-  
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-  
207 AM MST SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................92-96.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................8-13 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTHWEST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............WEST 5 TO 15 MPH IN THE MORNING  
BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.  
* 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.......9700 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......WEST 3 KNOTS.  
* DISPERSION FOR PHOENIX..........FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................64-74.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................26-45 PCT.  
* 24 HR TREND..................5 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................97-102.  
* 24 HR TREND..................5 DEGREES WARMER.  
* MIN HUMIDITY....................6-10 PCT.  
* 24 HR TREND..................3 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHEAST 5 TO 15 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.......11700 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHEAST 3 KNOTS.  
* DISPERSION FOR PHOENIX..........FAIR.  
 
   
EXTENDED
 
   
MONDAY
 
MOSTLY CLEAR. LOWS 67-77. HIGHS 100-105. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY
 
MOSTLY CLEAR. LOWS 69-79. HIGHS 98-103. SOUTH WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS 67-77. HIGHS 92-99. SOUTH WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
THURSDAY
 
PARTLY CLOUDY. LOWS 65-75. HIGHS 91-97.    
FRIDAY
 
MOSTLY CLEAR. LOWS 65-75. HIGHS 93-98.  
 

 
 
AZZ133-272115-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
207 AM MST SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................81-94.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................7-12 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* 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............WEST 10 TO 15 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.................52-66.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................27-36 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE  
EVENING BECOMING NORTHEAST AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................84-99.  
* 24 HR TREND..................5 DEGREES WARMER.  
* MIN HUMIDITY....................7-12 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTHWEST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............EAST 5 TO 15 MPH IN THE MORNING  
BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........6 OR HIGH POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
MONDAY
 
MOSTLY CLEAR. LOWS 55-72. HIGHS 86-102. SOUTHEAST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 59-72. HIGHS 86-100. SOUTHEAST WINDS 5 TO  
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 58-70. HIGHS 83-96. SOUTHWEST  
WINDS 10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
THURSDAY
 
PARTLY CLOUDY. LOWS 55-70. HIGHS 80-92.    
FRIDAY
 
MOSTLY CLEAR. LOWS 55-68. HIGHS 82-95.  
 

 
 
AZZ131-CAZ231-272115-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
207 AM MST SAT MAY 27 2017 /207 AM PDT SAT MAY 27 2017/  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................92-96.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................11-16 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............WEST 10 TO 15 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..........6100 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTH 4 KNOTS.  
* DISPERSION FOR YUMA.............FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................66-70.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................29-49 PCT.  
* 24 HR TREND..................10 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................98-104.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................6-11 PCT.  
* 24 HR TREND..................5 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.  
* 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..........10700 FT AGL.  
* TRANSPORT WIND FOR YUMA.........CALM.  
* DISPERSION FOR YUMA.............MARGINAL.  
 
   
EXTENDED
 
   
MONDAY
 
MOSTLY CLEAR. LOWS 70-75. HIGHS 102-107. SOUTHWEST  
WINDS 5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY
 
MOSTLY CLEAR. LOWS 72-76. HIGHS 99-105. SOUTH WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS 70-75. HIGHS 93-98. SOUTH WINDS  
10 TO 20 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 68-72. HIGHS 92-98.    
FRIDAY
 
CLEAR. LOWS 68-72. HIGHS 94-99.  
 

 
 
CAZ230-272115-  
JOSHUA TREE NATIONAL PARK-  
207 AM PDT SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................79-91.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................12-17 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTH IN THE AFTERNOON.  
* WINDS...10000 FT MSL............SOUTHWEST 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.........5 OR MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................55-68.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................27-38 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING  
BECOMING NORTHWEST AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING  
BECOMING NORTHEAST 5 TO 15 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
SUNDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................86-96.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................8-13 PCT.  
* 24 HR TREND..................4 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHEAST 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 OR LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
MONDAY
 
MOSTLY CLEAR. LOWS 59-75. HIGHS 88-100. NORTHWEST WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY
 
MOSTLY CLEAR. LOWS 61-75. HIGHS 87-99. SOUTHWEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS 56-74. HIGHS 78-90. SOUTHWEST  
WINDS 10 TO 20 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 56-72. HIGHS 79-91.    
FRIDAY
 
CLEAR. LOWS 56-71. HIGHS 82-94.  
 

 
 
CAZ232-272115-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
207 AM PDT SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................88-96.  
* 24 HR TREND..................3 DEGREES WARMER.  
* MIN HUMIDITY....................11-16 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 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.  
* 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.................65-70.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................28-50 PCT.  
* 24 HR TREND..................6 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............NORTHWEST 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.  
   
SUNDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................95-102.  
* 24 HR TREND..................6 DEGREES WARMER.  
* MIN HUMIDITY....................6-11 PCT.  
* 24 HR TREND..................5 PCT DRIER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING  
BECOMING SOUTHWEST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.  
* 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
 
   
MONDAY
 
MOSTLY CLEAR. LOWS 68-77. HIGHS 98-106. WEST WINDS 5 TO  
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
TUESDAY
 
MOSTLY CLEAR. LOWS 70-77. HIGHS 97-105. SOUTH WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS 68-75. HIGHS 88-96. SOUTH WINDS  
10 TO 20 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS 66-75. HIGHS 89-96.    
FRIDAY
 
CLEAR. LOWS 66-72. HIGHS 91-99.  
 

 
   
8 TO 10 DAY OUTLOOK
 
SATURDAY JUNE 3ND THROUGH MONDAY JUNE  
5TH. ABOVE NORMAL TEMPERATURES AND NEAR MEDIAN PRECIPITATION.  
 
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