FNUS75 KRIW 091418
FWSRIW

SPOT FORECAST FOR BRETECHE CR RX...BLM CAD
NATIONAL WEATHER SERVICE RIVERTON WY
818 AM MDT FRI APR 9 2010

FORECAST IS BASED ON IGNITION TIME OF 0810 MDT ON APRIL 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WEAK DISTURBANCE WILL CONTINUE MOVING THROUGH THE BURN SITE THIS
MORNING...WHICH WILL BRING ISOLATED SHOWERS THROUGH THE MID
AFTERNOON HOURS. THE EXIT OF THE DISTURBANCE WILL ALLOW THE AREA
OF HIGH PRESSURE TO BECOME THE MORE DOMINANT WEATHER PATTERN OVER
THE BURN SITE FOR THE NEXT COUPLE DAYS. WARMING TEMPERATURES WITH
DECREASED HUMIDITY WILL BE PRESENT UNDER THIS SYSTEM. WIND OVER
THE BURN SITE WILL PRIMARILY FOLLOW A DIURNAL PATTERN...THOUGH MAY
BECOME MORE SOUTHWEST AND INCREASE SATURDAY AFTERNOON AS FLOW
BEGINS TO SHIFT UNDER THE INFLUENCE OF ANOTHER WEAK DISTURBANCE.
THIS SECOND DISTURBANCE IS NOT ANTICIPATED TO ENHANCE PRECIPITATION.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED RAIN
                    SHOWERS AND SNOW SHOWERS AFTER 1100. ANY SHOWER
                    ACTIVITY SHOULD END BY 1600.
MAX TEMPERATURE.....38-41 BELOW 6700 FT...34-38 ABOVE 6700 FT.
MIN HUMIDITY........18-21 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING NORTHEAST AT
                    7-10MPH. GUSTS UP TO 15 MPH POSSIBLE THROUGHOUT
                    DAY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH SHIFTING TO THE EAST NORTHEAST
                    AFTER 1300.
LAL.................1.
CWR.................LESS THAN 5 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO AROUND 7000 FT AGL BY 1400.
TRANSPORT WINDS.....WEST TO NORTHWEST 10 TO 14 MPH.
SMOKE DISPERSAL.....FAIR (46100-58200 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....24-27 BELOW 6700 FT...20-24 ABOVE 6700 FT.
MAX HUMIDITY........48-52 PERCENT.
WIND (20 FT)........BECOMING NORTHWEST WINDS 8 TO 9 MPH BY 1800
                    THEN BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH BY
                    2200. WESTERLY WIND OF 7-9 MPH WILL REDEVELOP
                    BY 0400. GUSTS UP TO 15 MPH THROUGHOUT THE
                    NIGHT.
RIDGE TOP WINDS.....WEST 12 TO 18 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 1100 FT AGL BY 0200.
TRANSPORT WINDS.....BECOMING NORTH BY 2200...THEN SHIFTING TO
                    THE SOUTHWEST AT 7 TO 10 MPH BY 0100.
SMOKE DISPERSAL.....POOR TO FAIR (11100-42300 KNOT-FT).

.SATURDAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (30-40 PERCENT) BY 1400.
MAX TEMPERATURE.....42-45 BELOW 6700 FT...39-42 ABOVE 6700 FT.
MIN HUMIDITY........14-17 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHEAST
                    BY 1300.
RIDGE TOP WINDS.....SHIFTING TO THE EAST 7-10 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 4500-5500 FT AGL BY 1400.
TRANSPORT WINDS.....SOUTHWEST 7-10 MPH INCREASING TO 12-16 MPH
                    AFTER 1300.
SMOKE DISPERSAL.....INCREASING TO FAIR (18100-55500 KNOT-FT)
                    AFTER 1500.

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...PARTLY CLOUDY. LOWS IN THE LOWER 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE MID 30S. HIGHS IN THE MID 50S. SOUTHWEST WINDS AROUND 10 MPH.
.MONDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS WITH POSSIBLE SNOW
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE
MID 50S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS WITH POSSIBLE SNOW
SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE
UPPER 40S. WEST WINDS AROUND 14 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...JACK MONONI
REASON FOR REQUEST...PRESCRIBED
.TAG 20100409.BRETE.01/RIW