Expires:200804021300;;321950 FPUS55 KFGZ 012247 ZFPFGZ FIRE WEATHER PLANNING FORECAST FOR NORTHERN ARIZONA NATIONAL WEATHER SERVICE FLAGSTAFF AZ 300 PM MST TUE APR 1 2008 +++ THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS +++ +++ 20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY TERRAIN DRIVEN WINDS +++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .DISCUSSION...AN APPROACHING LOW PRESSURE SYSTEM WILL BRING AFTERNOON SOUTHWEST WINDS OF 15 TO 25 MPH WITH STRONGER GUSTS ON WEDNESDAY. MINIMUM RH VALUES FROM THE MOGOLLON RIM SOUTH AND WEST WILL GENERALLY BE HIGHER THAN ON TUESDAY WITH COOLER TEMPERATURES. HOWEVER...THE LITTLE COLORADO RIVER VALLEY CAN EXPECT RH VALUES TO DROP BELOW 15 PERCENT FOR AN HOUR OR TWO WEDNESDAY AFTERNOON. FOR THURSDAY...THE WEAK LOW PRESSURE SYSTEM WILL MOVE ACROSS ARIZONA AND BRING INCREASING MOISTURE AND WEAKER WINDS. A GENERAL NORTHWEST FLOW WILL SET UP ACROSS NORTHERN ARIZONA OVER THE WEEKEND WITH LOWER RELATIVE HUMIDITY VALUES BUT DAYTIME WINDS OF ONLY 10 TO 20 MPH. STRONG WINDS IN THE MIXING LEVEL WILL PROVIDE VERY GOOD TO EXCELLENT VENTILATION ON WEDNESDAY AFTERNOON. AZZ111-021300- CHUSKA MOUNTAINS AND DEFIANCE PLATEAU (FIRE WEATHER ZONE 111)- INCLUDING THE CITIES OF...WINDOW ROCK...GANADO 300 PM MST TUE APR 1 2008 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY. MIN TEMPERATURE.....AROUND 27. 24 HR TREND......LITTLE CHANGE. MAX HUMIDITY........44-64 PCT. 24 HR TREND......UP 3 PCT. WINDS (20 FT).......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 30 MPH IN THE EVENING BECOMING LIGHT. 10000 FT MSL WIND...SOUTHWEST 20 TO 30 MPH. CHANCE OF PRECIP....0 PERCENT. LAL.................1. HAINES INDEX........3 VERY LOW. .WEDNESDAY... SKY/WEATHER.........PARTLY CLOUDY. MAX TEMPERATURE.....58-68. 24 HR TREND......UP 3 DEGREES. MIN HUMIDITY........NEAR 12 PCT. 24 HR TREND......LITTLE CHANGE. WINDS (20 FT).......LIGHT WINDS BECOMING SOUTHWEST 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH. 10000 FT MSL WIND...SOUTHWEST 25 TO 35 MPH. CHANCE OF PRECIP....0 PERCENT. LAL.................1. HAINES INDEX........4 LOW. MIXING HEIGHT.......8000 FT AGL. TRANSPORT WINDS.....SOUTHWEST AROUND 25 KNOTS. VENTILATION.........EXCELLENT (216500 KNOT-FT). .WEDNESDAY NIGHT... SKY/WEATHER.........MOSTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE NIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....32-38. 24 HR TREND......UP 8 DEGREES. MAX HUMIDITY........50-70 PCT. 24 HR TREND......LITTLE CHANGE. WINDS (20 FT).......SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35 MPH DECREASING TO UP TO 10 MPH AFTER MIDNIGHT. 10000 FT MSL WIND...WEST 20 TO 30 MPH. CHANCE OF PRECIP....10 PERCENT. LAL.................1. HAINES INDEX........3 VERY LOW. .THURSDAY... SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN THE MORNING. A CHANCE OF SNOW SHOWERS THROUGH THE DAY. A SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. MAX TEMPERATURE.....49-57. 24 HR TREND......DOWN 9 DEGREES. MIN HUMIDITY........21-31 PCT. 24 HR TREND......UP 10 PCT. WINDS (20 FT).......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 30 MPH. 10000 FT MSL WIND...NORTHWEST 20 TO 30 MPH. CHANCE OF PRECIP....30 PERCENT. LAL.................1. HAINES INDEX........3 VERY LOW. = $$