FNUS75 KBOI 211759
FWSBOI

SPOT FORECAST FOR BALD HILL...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
1159 AM MDT SAT APR 21 2012

FORECAST IS BASED ON IGNITION TIME OF 1300 MDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...SHOWERS AND THUNDERSTORMS INCREASING IN COVERAGE BY MONDAY AND
TUESDAY...

.DISCUSSION...
IT WILL STILL BE WARM MONDAY AND TUESDAY BUT CLOUD COVER WILL BE INCREASING
AND THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL INCREASE AS WELL. I HAVE
WORDED THUNDERSTORMS AS SLIGHT CHANCE BELOW...BUT WOULD NOT BE SURPRISED TO
SEE THE OFFICIAL FORECAST CHANGE TO CHANCE WORDING BEFORE MONDAY GETS HERE.
TIMING IS NOT POSSIBLE THIS FAR OUT. MOST OF THE STORMS SHOULD BE THE TYPICAL
LATE AFTERNOON AND EARLY EVENING TYPE...BUT TWO MODELS ARE INSISTING THAT
OVERNIGHT STORMS ARE POSSIBLE IN THIS PATTERN...SO WE CANNOT RULE OUT ANY
TIME OF DAY. WINDS WILL BE GENERALLY LIGHT AND DRIVEN BY THE TERRAIN...BUT
GUSTS WITH SHOWERS AND STORMS ARE ALWAYS A CONCERN. THE PREDICTED AMOUNTS OF
PRECIPITATION BELOW ARE AREAL AVERAGES. IF A SHOWER OR STORM HITS YOU THEN
YOU WILL GET BETWEEN 0.10 AND 0.25 INCHES OF PRECIP...BUT ODDS ARE YOU WILL
NOT TAKE A DIRECT HIT...SO THE AMOUNTS BELOW ARE LOWERED ACCORDINGLY.

.MONDAY...

SKY/WEATHER.........PARTLY CLOUDY EARLY...BECOMING MOSTLY CLOUDY IN THE
                    AFTERNOON WITH A 30 PERCENT CHANCE OF SHOWERS AND A
                    SLIGHT CHANCE OF THUNDERSTORMS.
MAX TEMPERATURE.....70 TO 76.
MIN HUMIDITY........17 TO 22 PERCENT.
WIND - EYE LEVEL....NORTHEAST DOWNSLOPE WIND 5 TO 8 MPH IN THE MORNING...
                    BECOMING SOUTHWEST 3 TO 6 MPH IN THE AFTERNOON.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......6500 FT AGL.
TRANSPORT WIND......SOUTHWEST AROUND 10 MPH.
VENTILATION INDEX...650 GOOD.
AMOUNT OF PRECIP....0.04
CLOUD CVR PERCENT...20 EARLY INCREASING TO 50 LATE IN THE AFTERNOON

.MONDAY NIGHT...

SKY/WEATHER.........MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SHOWERS AND
                    A SLIGHT CHANCE OF THUNDERSTORMS.
MIN TEMPERATURE.....42 TO 46.
MAX HUMIDITY........75 TO 90 PERCENT.
WIND - EYE LEVEL....NORTHEAST DOWNSLOPE WIND 3 TO 6 MPH.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WIND......SOUTH AROUND 8 MPH.
VENTILATION INDEX...80 POOR.
AMOUNT OF PRECIP....0.03
CLOUD CVR PERCENT...40 EARLY INCREASING TO 70 LATE IN THE AFTERNOON

.TUESDAY...

SKY/WEATHER.........MOSTLY CLOUDY. A 30 PERCENT CHANCE OF RAIN SHOWERS AND
                    A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....63 TO 70.
MIN HUMIDITY........27 TO 39 PERCENT.
WIND - EYE LEVEL....WIND BECOMING SOUTHWEST 4 TO 8 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......7500 FT AGL.
TRANSPORT WIND......SOUTHWEST AROUND 20 MPH.
VENTILATION INDEX...1500 EXCELLENT.
AMOUNT OF PRECIP....0.06
CLOUD CVR PERCENT...50 EARLY INCREASING TO 80 LATE IN THE AFTERNOON

$$
FORECASTER...PARKER
REQUESTED BY...PAUL KLASNER
TYPE OF REQUEST...PRESCRIBED
.TAG 20120423.BALDH.01/BOI