FNUS75 KRIW 152013
FWSRIW

SPOT FORECAST FOR CATHEDRAL GROUP...NPS GTP
NATIONAL WEATHER SERVICE RIVERTON WY
213 PM MDT THU JUL 15 2010

FORECAST IS BASED ON REQUEST TIME OF 1338 MDT ON JULY 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE IN PLACE OVER THE SOUTHWEST UNITED STATES WILL KEEP
CONDITIONS DRY AT THE FIRE SITE THROUGH MIDDAY SATURDAY. WARMER
TEMPERATURES AND LOWER RELATIVE HUMIDITY ARE EXPECTED FRIDAY.
INCREASING MID AND HIGH LEVEL MOISTURE WILL INITIATE ISOLATED LATE
AFTERNOON THUNDERSTORMS ON SATURDAY. GUSTY OUTFLOW WIND AND LITTLE
RAINFALL WILL OCCUR WITH ANY STORMS THAT MANAGE TO FORM.

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

FORECASTER...JONES

.THIS AFTERNOON...
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........17-20 PERCENT.
WIND (20 FT)........WIND BECOMING SOUTHWEST 6 TO 10 MPH BETWEEN
                    1430 AND 1530.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....GOOD.

.TONIGHT...
SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....36-39.
MAX HUMIDITY........79-82 PERCENT.
WIND (20 FT)........SOUTHWEST WIND 5 TO 10 MPH UNTIL 1900...THEN
                    BECOMING DOWNSLOPE/DOWNVALLEY 5 TO 8 MPH
                    BY 2100.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......AROUND 5000 FT AGL UNTIL 1900...THEN DECREASING
                    TO LESS THAN 1000 FT AGL BY 2200.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1900...THEN
                    BECOMING DOWNSLOPE/DOWNVALLEY 5 TO 10 MPH
                    BY 2200.
SMOKE DISPERSAL.....GOOD UNTIL 1900...THEN POOR BY 2100.

.FRIDAY...
SKY/WEATHER.........SUNNY UNTIL 1500...THEN PARTLY CLOUDY
                    (30 PERCENT).
MAX TEMPERATURE.....82-85.
MIN HUMIDITY........13-16 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH UNTIL 0700...
                    THEN GRADUALLY TRANSITIONING TO
                    UPSLOPE/UPVALLEY 4 TO 7 MPH BY 1000. AFTER
                    1400...SOUTHWEST AROUND 10 MPH WITH GUSTS TO
                    AROUND 18 MPH.
RIDGE TOP WINDS.....SOUTHWEST 12 TO 17 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......LESS THAN 1000 FT AGL UNTIL 0800...THEN
                    GRADUALLY INCREASING TO AROUND 7000 FT AGL
                    BY 1400.
TRANSPORT WINDS.....DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH UNTIL 0800...
                    THEN BECOMING SOUTHWEST 15 TO 20 MPH BY 1300.
SMOKE DISPERSAL.....POOR UNTIL 0800...THEN BECOMING VERY GOOD
                    BY 1400.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY. LOWS 40 TO 45. SOUTHWEST
WIND AROUND 10 MPH.
.SATURDAY...MOSTLY CLEAR WITH ISOLATED LATE AFTERNOON SHOWERS
AND THUNDERSTORMS. LOWS 40 TO 45. HIGHS IN THE LOWER 80S.
SOUTHWEST WIND AROUND 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS IN THE UPPER 70S. WIND GENERALLY LESS
THAN 10 MPH.
.MONDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
70S. WIND GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...JONES
REQUESTED BY...MIKE BENTLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20100715.CATHE.01/RIW