FNUS70 PHFO 171743
FWSHFO

SPOT FORECAST FOR PRESIDENTS DAY
NATIONAL WEATHER SERVICE HONOLULU HI
743 AM HST SUN JAN 17 2010

IF CONDITIONS BECOME UNREPRESENTATIVE...PLEASE CONTACT
THE NATIONAL WEATHER SERVICE.

.DISCUSSION...A LIGHT TRADE WIND FLOW WILL PREVAIL ON THE LARGE
SCALE THROUGH MONDAY. HOWEVER...ISLAND SCALE WIND CIRCULATIONS
WILL OVERRIDE THE LIGHT TRADE WIND FLOW...WITH LIGHT AND VARIABLE
WINDS AT NIGHT AND IN THE MORNING ALLOWING EMISSIONS TO POOL NEAR
THE SOURCE. ALTHOUGH TRADE WINDS WILL INCREASE SLIGHTLY ON
MONDAY...A SLIGHT DECREASE MONDAY NIGHT MAY ALLOW EMISSIONS TO
POOL ONCE AGAIN. A MARKED INCREASE IN NORTHEAST WINDS TUESDAY
NIGHT THROUGH THURSDAY WILL ENSURE EMISSIONS ARE CARRIED RAPIDLY
AWAY...BUT SOUTHEAST WINDS ARE EXPECTED TO RETURN ON FRIDAY...WITH
DECREASING AIR QUALITY.


.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY IN THE MORNING THEN CLEARING.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........60 PERCENT.
WIND (20 FT)........NORTH WIND LESS THAN 6 MPH UNTIL 9 AM...THEN
                    SOUTHEAST AROUND 8 MPH.
MIXING HEIGHT.......3500 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........90 PERCENT.
WIND (20 FT)........NORTH 5 TO 6 MPH.
MIXING HEIGHT.......3500 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.

.MONDAY...
SKY/WEATHER.........PARTLY SUNNY.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........60 PERCENT.
WIND (20 FT)........NORTH AROUND 5 MPH UNTIL 9 AM...THEN SOUTHEAST
                    AROUND 8 MPH.
MIXING HEIGHT.......3500 FT AGL.
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.


FORECASTER...BIRCHARD

$$

REQUESTED BY...NPS
REASON FOR REQUEST...VOLCANIC EMISSIONS