FNUS75 KGJT 200331
FWSGJT

SPOT FORECAST FOR BLACKRIDGE RX...BLM
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
931 PM MDT WED MAY 19 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON MAY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...VERY STRONG AND GUSTY WINDS EXPECTED ON FRIDAY...

.DISCUSSION...A SHORTWAVE RIDGE WILL MOVE OVER THE AREA ON
THURSDAY RESULTING IN A RELATIVELY LIGHT WESTERLY FLOW OVER THE
AREA. LATE IN THE AFTERNOON THE FLOW WILL BEGIN TO SHIFT OUT OF
THE SOUTHWEST AS THE NEXT LOW PRESSURE SYSTEM COMES ONSHORE OVER THE
PACIFIC NORTHWEST. THE PRESSURE GRADIENT WILL TIGHTEN ON FRIDAY
AS THE LOW DROPS INTO THE GREAT BASIN. AS A RESULT DRY...WARM AND
VERY WINDY CONDITIONS ARE EXPECTED.


.THURSDAY (UNTIL SUNSET)...

SKY/WEATHER.........MOSTLY SUNNY (10-20%).
MAX TEMPERATURE.....64-69 F.
MIN HUMIDITY........15-20%.
WIND (20 FT)........LIGHT AND VARIABLE (0-3 MPH) UNTIL 0930 MDT...THEN
                    BECOMING WEST. INCREASING TO 4-8 MPH AROUND NOON.
                    WINDS WILL BECOME MORE WEST-SOUTHWEST AFTER 1800.
SMOKE DISPERSAL.....BECOMING FAIR BY 1100...THEN IMPROVING TO GOOD
                    DURING THE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 7000 FT AGL DURING THE AFTERNOON.
TRANSPORT WINDS.....WEST 13 MPH.

.THURSDAY NIGHT (AFTER SUNSET)...

SKY/WEATHER.........PARTLY CLOUDY (40-50%).
MIN TEMPERATURE.....42-47 F.
MAX HUMIDITY........47-52%.
WIND (20 FT)........LIGHT AND VARIABLE (0-3 MPH) UNTIL AROUND
                    MIDNIGHT...THEN BECOMING SOUTHEAST...INCREASING
                    TO 3-6 MPH BY SUNRISE.
SMOKE DISPERSAL.....POOR (5600 KNOT-FT).
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 5 MPH SHIFTING TO THE SOUTHEAST 6
                    MPH AFTER MIDNIGHT.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY (10-20%) THEN BECOMING PARTLY
                    CLOUDY (30-40%).
MAX TEMPERATURE.....73-78 F.
MIN HUMIDITY........9-14%.
WIND (20 FT)........WINDY. SOUTHEAST WINDS 5-8 MPH UNTIL 1000...THEN
                    BECOMING SOUTH-SOUTHWEST 10-15 MPH. INCREASING TO
                    SOUTH 20-25 MPH WITH GUSTS TO AROUND 45 MPH IN THE
                    AFTERNOON.
SMOKE DISPERSAL.....BECOMING EXCELLENT BY NOON.
MIXING HEIGHT.......INCREASING TO 12000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 25 MPH...INCREASING TO 37 MPH IN THE
                    AFTERNOON.

$$
FORECASTER...ELLEN HEFFERNAN
REQUESTED BY...SAM DEARSTYNE
TYPE OF REQUEST...PRESCRIBED
.TAG 20100520.BLACK.01/GJT