FNUS75 KRIW 230920
FWSRIW

SPOT FORECAST FOR LOWER GROS VENTRE RX...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
320 AM MDT THU SEP 23 2010

FORECAST IS BASED ON IGNITION TIME OF 1945 MDT ON SEPTEMBER 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

A DRY AND MILD DAY WILL OCCUR TODAY...WITH BREEZY SOUTHWEST TO
WEST WINDS EXPECTED OVER THE FIRE SITE THIS AFTERNOON. RELATIVE
HUMIDITY IS EXPECTED TO REMAIN RELATIVELY HIGH THROUGH EARLY
AFTERNOON...BEFORE SHARPLY FALLING OFF DURING THE MID TO LATE
AFTERNOON. DRY CONDITIONS AND A WARMING TREND IS EXPECTED THROUGH
THE WEEKEND. BREEZY SOUTHWEST TO WEST WINDS ARE EXPECTED ONCE
AGAIN ON FRIDAY...BUT WINDS ARE EXPECTED TO BE MUCH LIGHTER ON
SATURDAY AND SUNDAY. LOOKS LIKE THIS ABOVE AVERAGE AND DRY PATTERN
WILL CONTINUE THROUGH AT LEAST THE END OF THE MONTH.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT)
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........AROUND 25 PERCENT.
20 FOOT WINDS.......VARIABLE 3-6 MPH...BECOMING SOUTH SOUTHWEST
                    5-10 MPH BETWEEN 1000 AND NOON...THEN WEST
                    SOUTHWEST 10-15 MPH BY AROUND 1500. GUSTS
                    AROUND 25 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST SOUTHWEST AROUND 10 MPH SHIFTING TO THE WEST
                    AROUND 15 MPH AROUND NOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 5600 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 10 TO 15 MPH...INCREASING TO 20 MPH
                    BY AROUND NOON.
SMOKE DISPERSAL.....POOR TO GOOD (29000-98800 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....35-40.
MAX HUMIDITY........45-50 PERCENT.
20 FOOT WINDS.......WEST SOUTHWEST 5-10 MPH BECOMING
                    DOWNSLOPE/DOWNVALLEY 3-6 MPH BY 2000.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH...BECOMING SOUTHWEST BY
                    MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5000 FT AGL DECREASING TO 1000 FT AGL BY 2000.
TRANSPORT WINDS.....WEST 10 TO 15 MPH...BECOMING SOUTHWEST BY
                    MIDNIGHT.
SMOKE DISPERSAL.....GOOD (70100 KNOT-FT) DECREASING TO POOR (18300
                    KNOT-FT) BY 2000.

.FRIDAY...
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
MAX TEMPERATURE.....64-68.
MIN HUMIDITY........20-23 PERCENT.
20 FOOT WINDS.......SOUTH 5-10 MPH BECOMING SOUTHWEST 10-15 MPH
                    BETWEEN NOON AND 1400. GUSTS UP TO 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST 10-15 MPH...INCREASING TO 15-20 MPH
                    BY 1400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1700 FT AGL INCREASING TO 6100 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 13 TO 18 MPH.
SMOKE DISPERSAL.....POOR (27200 KNOT-FT) INCREASING TO GOOD (80100
                    KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.

.SATURDAY...CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.

.SUNDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID 70S.
WINDS GENERALLY LESS THAN 10 MPH.

.MONDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHTS IN THE MID 70S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...STROMBERG
REASON FOR REQUEST...PRESCRIBED
.TAG 20100922.LOWER.01/RIW