FNUS70 PHFO 291644
FWSHFO

SPOT FORECAST FOR PRESIDENT S DAY INCIDENT...NPS
NATIONAL WEATHER SERVICE HONOLULU HI
644 AM HST FRI JAN 29 2010

FORECAST IS BASED ON INCIDENT TIME OF 0638 HST ON JANUARY 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
TRADE WINDS HAVE WEAKENED SINCE THE SURFACE RIDGE RESTS OVER THE
BIG ISLAND. A COLD FRONT WILL STALL NEAR THE BIG ISLAND SATURDAY
AFTERNOON. GENTLE TO MODERATE TRADE WINDS WILL RETURN SUNDAY.
PREVAILING WINDS WILL BE LIGHT DOWNSLOPE NORTH TO NORTHEASTERLY BUT
WITH SOME LIGHT UPSLOPE WINDS IN THE AFTERNOON THROUGH THE
WEEKEND. SATURDAY WOULD BE THE PERIOD OF WEAKEST CIRCULATION THAT
COULD ALLOW POOLING OF VOLCANIC EMISSIONS OVER THE VOLCANO PARK AREA.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY. HAZE. SCATTERED SHOWERS.
MAX TEMPERATURE.....AROUND 70.
MIN HUMIDITY........61 PERCENT.
CHANCE OF PCPN......40 PERCENT.
MIXING HEIGHT.......4800 FT AGL.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST AROUND 6 MPH IN
                    THE AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 8 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. HAZE. SCATTERED SHOWERS.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........100 PERCENT.
CHANCE OF PCPN......40 PERCENT.
MIXING HEIGHT.......3600-4800 FT AGL.
WIND (20 FT)........LIGHT WINDS.
TRANSPORT WINDS.....NORTH AROUND 5 MPH.

.SATURDAY...

SKY/WEATHER.........PARTLY SUNNY. HAZE. SCATTERED SHOWERS.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........61 PERCENT.
CHANCE OF PCPN......50 PERCENT.
MIXING HEIGHT.......4800 FT AGL.
WIND (20 FT)........NORTHEAST WINDS AROUND 6 MPH BECOMING SOUTHEAST AROUND
                     6 MPH IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.

$$
FORECASTER...HOAG
REQUESTED BY...SAM
TYPE OF REQUEST...HAZMAT
.TAG 20100128.PRESI.01/HFO