FNUS75 KBOI 211548 FWSBOI SPOT FORECAST FOR PLOW GRAIN RX...BURNS BLM NATIONAL WEATHER SERVICE BOISE ID 948 AM MDT TUE APR 21 2009 FORECAST IS BASED ON IGNITION TIME OF 1100 PDT ON APRIL 21. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...WARM AND DRY TODAY WITH A SLIGHT CHANCE OF THUNDERSTORMS THIS EVENING... .DISCUSSION... HIGH PRESSURE ENTRENCHED OVER THE REGION WILL CONTINUE NEAR RECORD TEMPERATURES AND LIGHT WINDS AGAIN TODAY. A SWATH OF HIGH BASED MOISTURE AND INSTABILITY MOVING IN FROM NORTHERN CALIFORNIA LATE THIS EVENING MAY TRIGGER ISOLATED THUNDERSTORMS BUT WIDESPREAD CONVECTION IS NOT ANTICIPATED. ON WEDNESDAY SOUTHWEST WINDS WILL BE INCREASING AHEAD OF A COLD FRONT EXPECTED WEDNESDAY NIGHT. NOT MUCH PRECIPITATION WILL FALL FROM THIS WEATHER SYSTEM BUT WINDY CONDITIONS WILL CONTINUE THURSDAY...ALONG WITH MUCH COOLER WEATHER THAT WILL LAST THROUGH NEXT MONDAY. .TODAY... SKY/WEATHER.........SUNNY. MAX TEMPERATURE.....83. MIN HUMIDITY........10 TO 12 PERCENT. WIND - EYE LEVEL....LESS THAN 3 MPH IN THE MORNING...BECOMING SOUTHWEST AROUND 6 MPH IN THE AFTERNOON WITH GUSTS TO 12 MPH. HAINES INDEX........4 LOW. MIXING HEIGHT.......9000 FT AGL. TRANSPORT WIND......SOUTHWEST 12 TO 16 MPH. VENTILATION INDEX...900 EXCELLENT. .TONIGHT... SKY/WEATHER.........SLIGHT CHANCE OF THUNDERSTORMS AFTER 1800 HOURS. MIN TEMPERATURE.....44 TO 48. MAX HUMIDITY........40 TO 45 PERCENT. WIND - EYE LEVEL....LIGHT NORTH 2 TO 4 MPH. HAINES INDEX........4 LOW. MIXING HEIGHT.......2500 FT AGL. TRANSPORT WIND......NORTHWEST 3 TO 5 MPH. VENTILATION INDEX...250 FAIR. .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....78 TO 80. MIN HUMIDITY........15 TO 20 PERCENT. WIND - EYE LEVEL....WEST 7 TO 13 MPH WITH GUSTS TO 20 TO 25 MPH. HAINES INDEX........5 MODERATE. MIXING HEIGHT.......10000 FT AGL. TRANSPORT WIND......WEST AROUND 25 MPH. VENTILATION INDEX...2500 EXCELLENT. $$ FORECASTER...DECKER REQUESTED BY...BURN BOSS TYPE OF REQUEST...PRESCRIBED .TAG 20090421.PLOWG.01/BOI