FNUS75 KRIW 151548
FWSRIW

SPOT FORECAST FOR LOWER TWIN LAKES...BIA WRA
NATIONAL WEATHER SERVICE RIVERTON WY
948 AM MDT THU JUL 15 2010

FORECAST IS BASED ON REQUEST TIME OF 0918 MDT ON JULY 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
CONDITIONS WILL BE DRY AND WARMER TODAY AND FRIDAY AS A RIDGE OF
HIGH PRESSURE DOMINATES THE GREAT BASIN AND CENTRAL ROCKIES. A DRY
LOWER ATMOSPHERE WILL LEAD TO MINIMUM RELATIVE HUMIDITY IN THE LOW
TEENS TODAY WITH POOR RECOVERY TONIGHT. SIMILAR CONDITIONS ARE
EXPECTED FOR SATURDAY...ALTHOUGH AN ISOLATED LATE DAY THUNDERSTORM
WITH GUSTY OUTFLOW WIND AND LITTLE RAIN CANNOT BE RULED OUT.

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

FORECASTER...JONES

.TODAY...
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....71-74.
MIN HUMIDITY........11-14 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5 TO 9 MPH UNTIL 1300.
                    BETWEEN 1300 AND 1500 WIND WILL BECOME WEST
                    10 TO 15 MPH WITH OCCASIONAL GUSTS TO 25 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO AROUND 7500 FT AGL BY 1500.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
SMOKE DISPERSAL.....BECOMING VERY GOOD BY 1500.

.TONIGHT...
SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....45-48.
MAX HUMIDITY........38-41 PERCENT.
WIND (20 FT)........WEST 10 TO 15 MPH WITH OCCASIONAL GUSTS TO
                    25 MPH UNTIL 1900...THEN BECOMING 8 TO 13 MPH
                    BY 2100.
RIDGE TOP WINDS.....WEST-NORTHWEST 15 TO 20 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......AROUND 7000 FT AGL UNTIL 1900...THEN DECREASING
                    TO LESS THAN 1000 FT AGL BY 2200.
TRANSPORT WINDS.....WEST AROUND 20 MPH UNTIL 1900...THEN BECOMING
                    DOWNSLOPE/DOWNVALLEY 9 TO 14 MPH BY 2200.
SMOKE DISPERSAL.....VERY GOOD UNTIL 1900...THEN DECREASING TO POOR
                    BY 2200.

.FRIDAY...
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....73-76.
MIN HUMIDITY........14-17 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 7 TO 11 MPH UNTIL 0900...
                    THEN BECOMING UPSLOPE/UPVALLEY 4 TO 8 MPH BY
                    1100. BETWEEN 1300 AND 1500...WIND BECOMING
                    WEST 10 TO 15 MPH WITH OCCASIONAL GUSTS TO
                    22 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......LESS THAN 1000 FT AGL UNTIL 0900...THEN
                    GRADUALLY INCREASING TO AROUND 7000 FT AGL
                    BY 1400.
TRANSPORT WINDS.....DOWNSLOPE/DOWNVALLEY 5 TO 9 MPH UNTIL 0900...
                    THEN BECOMING WEST AROUND 20 MPH BY 1100.
SMOKE DISPERSAL.....POOR UNTIL 1000...THEN INCREASING TO
                    VERY GOOD BY 1400.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 40S. WEST WIND
10 TO 15 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE MID
70S. NORTHWEST WIND 10 TO 15 MPH.
.SUNDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER
70S. NORTHWEST WIND 10 TO 15 MPH.
.MONDAY...PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.
SOUTHWEST WIND AROUND 10 MPH.

$$

FORECASTER...JONES
REQUESTED BY...ROBERT JONES
REASON FOR REQUEST...WILDFIRE
.TAG 20100715.LOWER.01/RIW