FNUS75 KRIW 230413
FWSRIW

SPOT FORECAST FOR FAIRFIELD FIRE...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
1013 PM MDT MON JUL 22 2013

FORECAST IS BASED ON REQUEST TIME OF 2053 MDT ON JULY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 10 PM MDT THIS EVENING...

.DISCUSSION...
MAINLY DRY WEATHER WILL BE THE RULE INTO EARLY NEXT WEEK AS HIGH
PRESSURE BUILDS INTO THE AREA. WINDS WILL FAVOR A MORE UPSLOPE/UPCANYON
COMPONENT TODAY. THE RELATIVE HUMIDITY WILL BE A LITTLE HIGHER TODAY...
PARTLY DUE TO THE UPSLOPE COMPONENT TO THE WIND. TEMPERATURES WILL BE SLIGHTLY
COOLER TODAY BUT WILL REMAIN WARM NEVERTHELESS.

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

FORECASTER...LIPSON

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....89 AT 7000 FEET AND 81 AT 8500 FEET.
MIN HUMIDITY........10-13 PERCENT.
20 FOOT WINDS.......NORTHWEST WINDS 10 MPH WITH GUSTS TO
                    AROUND 20 MPH EARLY IN THE MORNING BECOMING
                    UPSLOPE 5-9 MPH BY 0800. AN UPVALLEY WIND FROM THE
                    NORTHEAST WILL BECOME ESTABLISHED BY 1000 AND CONTINUE
                    THROUGH 1200. THEN THE WINDS WILL VEER TO A MORE EAST
                    NORTHEAST DIRECTION AFTER 1200. WIND SPEEDS WILL THEN INCREASE
                    TO 10 TO 16 MPH BY 1300. THESE WINDS WILL PERSIST THROUGH
                    1600. WINDS WILL THEN DIMINISH IN SPEEDS
                    OF 5 TO 8 MPH FROM THE EAST. STRONGEST WINDS SHOULD
                    OCCUR CLOSER TO THE TOP OF FAIRFIELD HILL ALONG
                    WITH OCCASIONAL HIGHER GUSTS CLOSER TO SINKS CANYON
                    ROAD AWAY FROM THE BLOCKING TERRAIN DURING THE WINDOW FROM
                    1300 TO 1600.
RIDGE TOP WINDS.....WEST AROUND 15 MPH SHIFTING TO THE NORTHEAST IN
                    THE LATE MORNING AND AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3100-4100 FT AGL INCREASING TO 6900-7900 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 6 TO 9 MPH UNTIL LATE AFTERNOON BECOMING
                    LIGHT AND VARIABLE.
SMOKE DISPERSAL.....POOR (22900-23100 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....51-54.
MAX HUMIDITY........40 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH KICKING IN BY 2100.
                    GUSTS UP TO 15 MPH AFTER MIDNIGHT.
RIDGE TOP WINDS.....NORTHEAST 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......4700-5700 FT AGL DECREASING TO 900 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTHEAST 13 TO 16 MPH.
SMOKE DISPERSAL.....POOR (10300-13100 KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (40-50 PERCENT). SLIGHT CHANCE OF
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON BEGINNING
                    BETWEEN 1500 AND 1800.
MAX TEMPERATURE.....87 AT 7000 FEET AND 79 AT 8500 FEET.
MIN HUMIDITY........14 PERCENT AT 7000 FEET AND 18 PERCENT AT 8500 FEET.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. AFTER 1200 NORTHEAST
                    10 TO 12 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....EAST AROUND 10 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.8 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2500-3500 FT AGL INCREASING TO 8200-9200 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 10 TO 13 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (27700-74700 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS IN THE LOWER 50S. WINDS GENERALLY LESS
THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...SLAGOWSKI
REASON FOR REQUEST...WILDFIRE
.TAG 20130722.FAIRF.01/RIW