661  
FNUS55 KPSR 260922  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
222 AM MST THU APR 26 2018  
   
DISCUSSION
 
 
HOT AND DRY WEATHER WILL CONTINUE THURSDAY AND FRIDAY. ON FRIDAY,  
THE HIGHER TERRAIN IN GILA COUNTY HAS A VERY SLIGHT RISK FOR A  
THUNDERSTORM OR TWO. OTHERWISE, MINIMUM RELATIVE HUMIDITY VALUES  
WILL REMAIN AT OR BELOW 15 PERCENT WITH MODEST OVERNIGHT  
RECOVERIES. LOCATIONS IN FAR SOUTHWEST IMPERIAL COUNTY MAY SEE  
SOME GUSTS UP TO 20 MPH, BUT OTHERWISE, WINDS WILL BE FAIRLY LIGHT  
WITH AN OCCASIONAL AFTERNOON BREEZE, AND FOLLOW TYPICAL DIURNAL  
DIRECTIONAL PATTERNS ACROSS THE FIRE DISTRICTS.  
   
..THUNDERSTORMS IMPLY GUSTY WINDS
 
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 
AZZ132-262130-  
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-  
222 AM MST THU APR 26 2018  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................94-99.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................7-12 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHEAST 5 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........4 OR LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
* MIXING HEIGHT FOR PHOENIX.......10800 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......WEST 3 KNOTS.  
* DISPERSION FOR PHOENIX..........FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................64-74.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................24-37 PCT.  
* 24 HR TREND..................6 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................92-98.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................9-14 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTH 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.......9400 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 9 KNOTS.  
* DISPERSION FOR PHOENIX..........VERY GOOD.  
 
   
EXTENDED
 
   
SATURDAY
 
CLEAR. LOWS 57-68. HIGHS 89-95. SOUTHWEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
CLEAR. LOWS 57-67. HIGHS 85-91. SOUTHWEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
MONDAY
 
MOSTLY CLEAR. LOWS 54-64. HIGHS 81-87. SOUTHWEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY
 
MOSTLY CLEAR. LOWS 53-63. HIGHS 78-84.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 53-63. HIGHS 79-85.  
 

 
 
AZZ133-262130-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
222 AM MST THU APR 26 2018  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................82-96.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................7-12 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING WEST 5 TO 15 MPH IN THE AFTERNOON.  
* WINDS...10000 FT MSL............NORTHWEST 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.  
   
TONIGHT
 
 
* SKY/WEATHER.....................PARTLY CLOUDY.  
* MIN TEMPERATURE.................55-67.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................25-31 PCT.  
* 24 HR TREND..................4 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 10 MPH IN THE EVENING  
BECOMING EAST AFTER MIDNIGHT.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................PARTLY SUNNY.  
* MAX TEMPERATURE.................78-94.  
* 24 HR TREND..................3 DEGREES COOLER.  
* MIN HUMIDITY....................10-17 PCT.  
* 24 HR TREND..................4 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHEAST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE MORNING  
BECOMING SOUTH 5 TO 15 MPH IN THE AFTERNOON.  
* CHANCE OF PRECIP................5 PERCENT IN THE AFTERNOON.  
* LAL.............................1.  
* HAINES HIGH LEVEL INDEX.........4 OR LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
   
EXTENDED
 
   
SATURDAY
 
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 50-66. HIGHS 79-93. SOUTH WINDS 10 TO 20 MPH.  
MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
CLEAR. LOWS 47-60. HIGHS 74-88. SOUTHWEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
MONDAY
 
MOSTLY CLEAR. LOWS 45-59. HIGHS 70-84. SOUTHWEST WINDS  
15 TO 25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY
 
PARTLY CLOUDY. LOWS 42-58. HIGHS 68-82.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS 42-57. HIGHS 65-79.  
 

 
 
AZZ131-CAZ231-262130-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
222 AM MST THU APR 26 2018 /222 AM PDT THU APR 26 2018/  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................97-102.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................9-14 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 15 MPH.  
* 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.  
* MIXING HEIGHT FOR YUMA..........8400 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 7 KNOTS.  
* DISPERSION FOR YUMA.............GOOD.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................64-70.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................26-41 PCT.  
* 24 HR TREND..................4 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................94-99.  
* 24 HR TREND..................3 DEGREES COOLER.  
* MIN HUMIDITY....................7-12 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 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..........4600 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 7 KNOTS.  
* DISPERSION FOR YUMA.............FAIR.  
 
   
EXTENDED
 
   
SATURDAY
 
CLEAR. LOWS 58-66. HIGHS 90-94. WEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
CLEAR. LOWS 58-64. HIGHS 87-91. SOUTHWEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
MONDAY
 
MOSTLY CLEAR. LOWS 55-63. HIGHS 84-88. SOUTHWEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
TUESDAY
 
MOSTLY CLEAR. LOWS 54-60. HIGHS 80-85.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 54-63. HIGHS 82-88.  
 

 
 
CAZ230-262130-  
JOSHUA TREE NATIONAL PARK-  
222 AM PDT THU APR 26 2018  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................83-98.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................9-14 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHWEST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTHWEST 5 TO 15 MPH IN THE AFTERNOON.  
* WINDS...10000 FT MSL............SOUTHEAST 10 TO 20 MPH.  
* 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.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................55-65.  
* 24 HR TREND..................3 DEGREES COOLER.  
* MAX HUMIDITY....................26-33 PCT.  
* 24 HR TREND..................6 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............LIGHT AND VARIABLE IN THE EVENING  
BECOMING SOUTH 5 TO 15 MPH AFTER MIDNIGHT.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................79-94.  
* 24 HR TREND..................4 DEGREES COOLER.  
* MIN HUMIDITY....................8-13 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 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.  
 
   
EXTENDED
 
   
SATURDAY
 
CLEAR. LOWS 49-59. HIGHS 75-89. WEST WINDS 15 TO  
25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 49-59. HIGHS 72-86. WEST WINDS 10 TO  
20 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS 47-59. HIGHS 69-83. WEST WINDS 10 TO  
20 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS 47-57. HIGHS 64-79.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 47-60. HIGHS 70-83.  
 

 
 
CAZ232-262130-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
222 AM PDT THU APR 26 2018  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................92-101.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................8-14 PCT.  
* 24 HR TREND..................3 PCT WETTER.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHEAST 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.  
   
TONIGHT
 
 
* SKY/WEATHER.....................CLEAR.  
* MIN TEMPERATURE.................60-69.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................21-44 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTH 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
FRIDAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................88-98.  
* 24 HR TREND..................3 DEGREES COOLER.  
* MIN HUMIDITY....................7-12 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTHWEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............SOUTHWEST 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
 
   
SATURDAY
 
CLEAR. LOWS 54-65. HIGHS 85-94. WEST WINDS 15 TO  
25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 54-64. HIGHS 82-90. WEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
MONDAY
 
BREEZY. MOSTLY CLEAR. LOWS 53-64. HIGHS 79-87. WEST  
WINDS 20 TO 30 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 52-62. HIGHS 74-83.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 52-64. HIGHS 78-87.  
 

 
   
8 TO 10 DAY OUTLOOK
 
THURSDAY MAY 3RD THROUGH SATURDAY MAY 5TH:  
BELOW NORMAL TEMPERATURES AND NEAR TO ABOVE MEDIAN PRECIPITATION.  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab AZ Page
The Nexlab CA Page Main Text Page