092 
FXUS65 KBOI 232034
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
234 PM MDT SAT MAR 23 2013

.SHORT TERM...TONIGHT THROUGH MONDAY...UPPER LEVEL RIDGE OFF THE
WEST COAST WILL SLOWLY MOVE EAST TONIGHT THROUGH MONDAY. THIS
WILL KEEP THE FORECAST AREA UNDER A COLD DRY NORTHWESTERLY FLOW.
AS THE AXIS OF THE RIDGE MOVES CLOSER TO THE WEST
COAST...TEMPERATURES WILL WARM A FEW DEGREES EACH DAY. ENOUGH
MOISTURE MOVING THROUGH THE FLOW FOR PARTLY CLOUDY SKIES TONIGHT
THROUGH MONDAY. EVEN WITH A FEW CLOUDS OVER THE REGION EXPECT LOW
TEMPERATURES TONIGHT TO BE 1 TO 2 DEGREES WARMER THAN SATURDAY
MORNING BUT THEN WARM A FEW MORE DEGREES FOR MONDAY MORNING.
SATELLITE IMAGERY SHOWS SOME CUMULUS DEVELOPMENT LATE THIS
AFTERNOON OVER THE WEST CENTRAL AND BOISE MOUNTAINS SO COULD STILL
SEE LOCAL LIGHT SNOW SHOWERS THROUGH THE EVENING HOURS. OTHERWISE
NO PRECIPITATION EXPECTED SUNDAY THROUGH MONDAY.

.LONG TERM...MONDAY NIGHT THROUGH SATURDAY...SHORTWAVE RIDGING OVER
THE INTERMOUNTAIN WEST ON MONDAY NIGHT WILL QUICKLY GIVE WAY TO A
SERIES OF UPPER LEVEL TROUGHS THAT WILL MOVE THROUGH DURING THE
WEEK. STARTING TUESDAY...THE FIRST IN THIS SERIES OF TROUGHS WILL
MOVE THROUGH BRINGING THE BEST CHANCE OF PRECIPITATION TO EASTERN
OREGON AND THE WEST CENTRAL IDAHO MOUNTAINS. THE NEXT TROUGH WILL
PUSH THROUGH EASTERN OREGON LATE WEDNESDAY...ACCOMPANIED BY
STEEPER LAPSE RATES FAVORABLE TO DEEPER CONVECTION. HAVE HELD OFF
ON ADDING THUNDER TO THE GRIDS FOR NOW THOUGH IT LOOKS LIKE A
DISTINCT POSSIBILITY WEDNESDAY AND THURSDAY EVENINGS. ON FRIDAY
THE UPPER LEVEL FLOW WILL SPLIT AROUND THE AREA WITH A DEEP CUT
OFF LOW PRESSURE CENTER PROGRESSING TO OUR SOUTH IN CALIFORNIA.
TEMPERATURES WILL BE VERY NEAR NORMAL THROUGH THE EXTENDED PERIOD.

&&

.AVIATION...VFR THROUGH SUNDAY UNDER SCATTERED MID AND HIGH LEVEL
CLOUDS. WEST WINDS AT 15-25 KTS IN THE WESTERN MAGIC VALLEY THIS
EVENING...DECREASING AFTER SUNSET TO 10 KTS OR LESS THROUGH
SUNDAY. NW WINDS ALOFT AVERAGING 15 KTS AT 10K FEET MSL.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...NONE.
OR...NONE.
&&

$$

WEATHER.GOV/BOISE

SHORT TERM...JA
LONG TERM....CB/DD
AVIATION.....CB