FNUS75 KRIW 201120
FWSRIW

SPOT FORECAST FOR BULL...TETON INTERAGENCY DISPATCH
NATIONAL WEATHER SERVICE RIVERTON WY
520 AM MDT FRI AUG 20 2010

FORECAST IS BASED ON IGNITION TIME OF 1700 MDT ON AUGUST 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A DRY SOUTHWEST FLOW WILL PREVAIL TODAY WITH
TEMPERATURES TRENDING UPWARD...RH TRENDING DOWNWARD WITH LESS CLOUD
COVER.  THIS SOUTHWEST FLOW WILL CONTINUE TO INTENSIFY OVER THE
WEEKEND AS A STRONG COLD FRONT SLOWLY APPROACHES.  CRITICAL FIRE
WEATHER CONDITIONS ARE EXPECTED TO DEVELOP AHEAD OF THIS FRONT OVER
THE WEEKEND ESPECIALLY ON SUNDAY WITH THE FRONT MOVING THROUGH
SUNDAY EVENING.

...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS...
...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT...

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 74-77.
MIN HUMIDITY........16-19 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST SOUTHWEST
                    8 TO 13 MPH WITH GUSTS OF 20 TO 25 MPH BETWEEN
                    NOON AND 1400.
RIDGE TOP WINDS.....SOUTH SOUTHWEST 5 TO 8 MPH IN THE MORNING BECOMING
                    WEST SOUTHWEST 12 TO 18 MPH WITH GUSTS OF 25 TO
                    30 MPH IN THE AFTERNOON.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4100-5100 FT AGL INCREASING TO 8000-9000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE
                    SOUTHWEST 14 TO 18 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (32400 KNOT-FT) INCREASING TO GOOD (97000
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....47-52
MAX HUMIDITY........44-47 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
                    AROUND 15 MPH EARLY IN THE EVENING
                    BECOMING DOWNSLOPE/DOWNVALLEY OR SOUTHEAST 4-7
                    MPH AFTER SUNSET.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH SHIFTING TO
THE                 SOUTHEAST AROUND 5 MPH AFTER MIDNIGHT.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5600-6600 FT AGL DECREASING TO 1600-2600 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 13 TO 17 MPH SHIFTING TO THE
                    SOUTHEAST AT 10 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....GOOD (84100 KNOT-FT) DECREASING TO POOR (20200
                    KNOT-FT) AFTER MIDNIGHT.

.SATURDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT) THEN BECOMING PARTLY
                    CLOUDY (30-40 PERCENT).
MAX TEMPERATURE.....76-79.
MIN HUMIDITY........16-19 PERCENT.
WIND (20 FT)........SOUTH TO SOUTHEAST 4 TO 8 MPH IN THE MORNING BECOMING
                    SOUTH 12 TO 18 MPH WITH GUSTS TO AROUND 25 MPH
                    AROUND 1500L.

RIDGE TOP WINDS.....SOUTH TO SOUTHEAST 5 TO 10 MPH SHIFTING TO
                    THE SOUTH SOUTHWEST AROUND 20 MPH AROUND 1500L.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5400-6400 FT AGL INCREASING TO 9400-10400 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 10 TO 13 MPH SHIFTING TO THE
                    SOUTHWEST 20 TO 25 23 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD (77300 KNOT-FT) INCREASING TO EXCELLENT
                    (158800 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.SATURDAY NIGHT...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS AROUND 50. WINDS GENERALLY LESS THAN
10 MPH.

.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

.MONDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID
60S. WINDS GENERALLY LESS THAN 10 MPH.

.TUESDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...TIDC
REASON FOR REQUEST...PRESCRIBED
.TAG 20100723.BULL_.02/RIW