FNUS70 PHFO 231632
FWSHFO

SPOT FORECAST FOR PRESIDENTS DAY...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE HONOLULU HI
632 AM HST SAT JAN 23 2010

FORECAST IS BASED ON IGNITION TIME OF 0635 HST ON JANUARY 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
LIGHT SOUTHEAST FLOW AND AN APPROACHING FRONT NORTHWEST OF THE
STATE WILL ALLOW FOR VARIABLE SEA AND LAND BREEZES THIS WEEKEND.
NIGHTTIME RADIATIONAL COOLING WILL PRODUCE A SURFACE BASED
NOCTURNAL INVERSION WHICH WILL TRAP HIGHER CONCENTRATIONS OF VOG
IN POCKETS OVERNIGHT AND INTO THE EARLY MORNING HOURS. DAYTIME
MIXING WILL SCOUR OUT THE VOG IMPROVING THESE CONDITIONS BY MID
MORNING. THE INCOMING COLD FRONT CURRENTLY NORTHWEST OF THE KAUAI
WILL STALL AND WASH OUT OVER THE NORTHWESTERN PORTION OF THE
STATE AND NOT AFFECT THE BIG ISLAND DIRECTLY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY. ISOLATED SHOWERS IN THE MORNING.
                    HAZE.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........61 PERCENT.
MIXING HEIGHT.......3600 FT AGL.
WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH.
TRANSPORT WINDS.....SOUTHWEST AROUND 2 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. HAZE. ISOLATED SHOWERS.
MIN TEMPERATURE.....AROUND 49.
MAX HUMIDITY........100 PERCENT.
MIXING HEIGHT.......3600 FT AGL.
WIND (20 FT)........LIGHT WINDS.
TRANSPORT WINDS.....NORTHEAST AROUND 4 MPH.

.SUNDAY...

SKY/WEATHER.........MOSTLY SUNNY. HAZE.
MAX TEMPERATURE.....AROUND 69.
MIN HUMIDITY........57 PERCENT.
MIXING HEIGHT.......3600-3700 FT AGL.
WIND (20 FT)........LIGHT WINDS.
TRANSPORT WINDS.....EAST AROUND 5 MPH.

$$
FORECASTER...DEJESUS
REQUESTED BY...HEIDI
TYPE OF REQUEST...PRESCRIBED
.TAG 20100123.PRESI.01/HFO