FNUS76 KSTO 311218
FWSSTO

SPOT FORECAST FOR RIO VISTA UPLAND RX...U.S. FISH & WILDLIFE SERVICE
NATIONAL WEATHER SERVICE SACRAMENTO CA
518 AM PDT MON MAY 31 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON MAY 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
WEAK FRONTAL SYSTEM TO SKIRT THE REGION WITH SLIGHT CHANCE OF
LIGHT SHOWERS THIS AFTERNOON. INCREASED WINDS THROUGH THE DELTA
WILL CAUSE A WIND SHIFT FROM NORTH TO SOUTH LATE THIS AFTERNOON.
THE SOUTHERLY SURFACE WINDS WILL CONTINUE THROUGH THE WEEK.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN
                    THE AFTERNOON.
                                                            TEMPERATURE.........73-75...MAX 78-81.
                    MIN HUMIDITY........40 PERCENT...MIN 30-33 PERCENT.
WIND (20 FT)........
 LWR SLP/VALLEY.....WINDS NORTH AT 3-7 MPH AT IGNITION...THEN
                    BECOMING VARIABLE 1-3 MPH EARLY AFTERNOON
                    BEFORE SHIFTING SOUTHEAST 3-7 MPH LATE IN THE
                    AFTERNOON.
CWR.................20 PERCENT.
MIXING HEIGHT.......5000 FT AGL AT IGNITION INCREASING TO 8000 FT
                    AGL.
MIXING WINDS........NORTHWEST 7 TO 15 MPH UNTIL LATE AFTERNOON
                    BECOMING LIGHT...THEN BECOMING SOUTH AROUND 6
                    MPH LATE IN THE AFTERNOON.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY.
                                                            TEMPERATURE.........54-59.
                    MIN HUMIDITY........83-88 PERCENT.
WIND (20 FT)........
 LWR SLP/VALLEY.....SOUTHEAST WINDS 4 TO 10 MPH IN THE EVENING
                    BECOMING LIGHT...THEN BECOMING SOUTHWEST 4 TO 8
                    MPH AFTER MIDNIGHT.
CWR.................20 PERCENT DECREASING TO 10 PERCENT EARLY IN
                    THE MORNING.
MIXING HEIGHT.......4300-4600 FT AGL DECREASING TO 1300-2200 FT AGL
                    LATE IN THE EVENING.
MIXING WINDS........SOUTH AROUND 6 MPH EARLY IN THE EVENING
                    BECOMING LIGHT...THEN BECOMING SOUTHEAST AROUND
                    8 MPH EARLY IN THE MORNING.

.TUESDAY...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
                                                            TEMPERATURE.........80-83.
                    MIN HUMIDITY........31-36 PERCENT.
WIND (20 FT)........
 LWR SLP/VALLEY.....SOUTH WINDS 3 TO 8 MPH.
CWR.................10 PERCENT.
MIXING HEIGHT.......1300-2100 FT AGL INCREASING TO 6400 FT AGL.
MIXING WINDS........SOUTH 5 TO 8 MPH.


FORECASTER...JCLAPP
REQUESTED BY...JEREMY MCMAHON
REASON FOR REQUEST...PRESCRIBED
.TAG 20100531.RIOVI.01/STO

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