704  
FNUS55 KPSR 250922  
FWFPSR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST AND SOUTH-CENTRAL  
ARIZONA AND SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
222 AM MST WED APR 25 2018  
   
DISCUSSION
 
 
THE HOT AND DRY WEATHER WILL CONTINUE WITH DAYTIME TEMPERATURES  
NEAR 100 DEGREES AND MINIMUM HUMIDITIES NEAR 10 PERCENT WITH ONLY  
MODEST OVERNIGHT RECOVERIES. THE WINDS WILL BE FAIRLY LIGHT WITH  
JUST AN OCCASIONAL AFTERNOON BREEZE, AND FOLLOW TYPICAL DIURNAL  
DIRECTIONAL PATTERNS.  
   
..THUNDERSTORMS IMPLY GUSTY WINDS
 
 
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-  
222 AM MST WED APR 25 2018  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................93-98.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................6-11 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............SOUTHEAST 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.......10800 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......SOUTHWEST 2 KNOTS.  
* DISPERSION FOR PHOENIX..........MARGINAL.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................64-74.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................18-36 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.  
* LAL.............................1.  
   
THURSDAY
 
 
* 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 IN THE  
MORNING BECOMING LIGHT AND VARIABLE IN THE AFTERNOON.  
* 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.......11400 FT AGL.  
* TRANSPORT WIND FOR PHOENIX......WEST 4 KNOTS.  
* DISPERSION FOR PHOENIX..........GOOD.  
 
   
EXTENDED
 
   
FRIDAY
 
MOSTLY CLEAR. LOWS 61-71. HIGHS 92-98. SOUTHWEST WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
SATURDAY
 
CLEAR. LOWS 58-69. HIGHS 89-95. SOUTHWEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 57-67. HIGHS 84-90. SOUTHWEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
MONDAY
 
MOSTLY CLEAR. LOWS 54-64. HIGHS 82-88.    
TUESDAY
 
MOSTLY CLEAR. LOWS 54-64. HIGHS 78-84.  
 

 
 
AZZ133-252130-  
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-  
SOUTHERN TONTO NF/WEST SAN CARLOS BIA/SOUTH PORTION FT APACHE BIA/  
CAZ-  
222 AM MST WED APR 25 2018  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................81-95.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................7-12 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTHEAST 5 TO 10 MPH IN THE  
MORNING BECOMING SOUTHWEST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............WEST 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.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................52-66.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................20-31 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............WEST 5 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* LAL.............................1.  
   
THURSDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................82-96.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................8-13 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............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.  
 
   
EXTENDED
 
   
FRIDAY
 
PARTLY CLOUDY. LOWS 52-68. HIGHS 77-93. SOUTHEAST WINDS  
10 TO 20 MPH.    
SATURDAY
 
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 49-65. HIGHS 77-92. SOUTH WINDS 10 TO 20 MPH.  
MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 46-61. HIGHS 74-88. SOUTHWEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
MONDAY
 
MOSTLY CLEAR. LOWS 46-59. HIGHS 71-85.    
TUESDAY
 
PARTLY CLOUDY. LOWS 43-58. HIGHS 68-82.  
 

 
 
AZZ131-CAZ231-252130-  
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-  
LOWER COLORADO RIVER VALLEY CA-  
222 AM MST WED APR 25 2018 /222 AM PDT WED APR 25 2018/  
   
TODAY
 
 
* SKY/WEATHER.....................SUNNY.  
* MAX TEMPERATURE.................96-101.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................8-13 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 5 TO 15 MPH.  
* WINDS...10000 FT MSL............EAST 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..........9100 FT AGL.  
* TRANSPORT WIND FOR YUMA.........EAST 3 KNOTS.  
* DISPERSION FOR YUMA.............FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................65-71.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................22-49 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..SOUTH 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.  
   
THURSDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................96-102.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................8-13 PCT.  
* 24 HR TREND..................LITTLE 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..........8600 FT AGL.  
* TRANSPORT WIND FOR YUMA.........SOUTHWEST 8 KNOTS.  
* DISPERSION FOR YUMA.............GOOD.  
 
   
EXTENDED
 
   
FRIDAY
 
MOSTLY CLEAR. LOWS 61-71. HIGHS 94-99. SOUTHWEST WINDS  
5 TO 15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
SATURDAY
 
CLEAR. LOWS 58-66. HIGHS 90-94. WEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 58-63. HIGHS 86-90. WEST WINDS 5 TO  
15 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
MONDAY
 
MOSTLY CLEAR. LOWS 54-63. HIGHS 83-88.    
TUESDAY
 
MOSTLY CLEAR. LOWS 54-61. HIGHS 81-86.  
 

 
 
CAZ230-252130-  
JOSHUA TREE NATIONAL PARK-  
222 AM PDT WED APR 25 2018  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................82-97.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................8-13 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..NORTH 5 TO 10 MPH IN THE MORNING  
BECOMING SOUTHEAST IN THE AFTERNOON.  
* WINDS...10000 FT MSL............EAST 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.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................58-67.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................21-26 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............EAST 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
THURSDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................82-97.  
* 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 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
 
   
FRIDAY
 
CLEAR. LOWS 51-66. HIGHS 79-95. WEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SATURDAY
 
MOSTLY CLEAR. LOWS 48-59. HIGHS 74-89. WEST WINDS  
10 TO 20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN  
15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 48-59. HIGHS 72-85. WEST WINDS 10 TO  
20 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS 46-59. HIGHS 69-83.    
TUESDAY
 
PARTLY CLOUDY. LOWS 46-57. HIGHS 65-80.  
 

 
 
CAZ232-252130-  
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-  
222 AM PDT WED APR 25 2018  
   
TODAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................91-100.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................7-13 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............EAST 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.  
   
TONIGHT
 
 
* SKY/WEATHER.....................MOSTLY CLEAR.  
* MIN TEMPERATURE.................62-71.  
* 24 HR TREND..................LITTLE CHANGE.  
* MAX HUMIDITY....................20-50 PCT.  
* 24 HR TREND..................LITTLE RH CHANGE.  
* WINDS - 20 FOOT...SLOPE/VALLEY..WEST 5 TO 15 MPH.  
* WINDS...10000 FT MSL............EAST 10 TO 15 MPH.  
* CHANCE OF PRECIP................0 PERCENT.  
* CWR (>= 0.10 IN)................0 PERCENT.  
* LAL.............................1.  
   
THURSDAY
 
 
* SKY/WEATHER.....................MOSTLY SUNNY.  
* MAX TEMPERATURE.................91-101.  
* 24 HR TREND..................LITTLE CHANGE.  
* MIN HUMIDITY....................7-13 PCT.  
* 24 HR TREND..................LITTLE CHANGE.  
* 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.  
 
   
EXTENDED
 
   
FRIDAY
 
MOSTLY CLEAR. LOWS 56-70. HIGHS 89-98. WEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SATURDAY
 
CLEAR. LOWS 55-65. HIGHS 84-93. WEST WINDS 15 TO  
25 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
SUNDAY
 
MOSTLY CLEAR. LOWS 55-64. HIGHS 81-89. WEST WINDS 10 TO  
20 MPH. MINIMUM RELATIVE HUMIDITY MAY BE LOWER THAN 15 PERCENT.    
MONDAY
 
MOSTLY CLEAR. LOWS 53-64. HIGHS 78-87.    
TUESDAY
 
MOSTLY CLEAR. LOWS 53-62. HIGHS 76-85.  
 

 
   
8 TO 10 DAY OUTLOOK
 
WEDNESDAY MAY 2ND THROUGH FRIDAY MAY 4TH:  
NEAR 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