FNUS75 KCYS 041521
FWSCYS

SPOT FORECAST FOR MORTENSON LAKE - TOAD...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
921 AM MDT WED APR 4 2012

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON APRIL 04.

IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL
WEATHER SERVICE.

...CRITICAL FIRE WEATHER CONDITIONS POSSIBLE ON THURSDAY...

.DISCUSSION...

WARMER AND DRIER CONDITIONS WILL OCCUR TODAY WITH AFTERNOON
HIGHS CLIMBING INTO THE MIDDLE TO UPPER 50S AND MINIMUM RELATIVE
HUMIDITIES DROPPING INTO THE 20S TO NEAR 30 PERCENT. LIGHT WINDS
EARLY THIS MORNING WILL BECOME SOUTHWEST ON WEDNESDAY AFTERNOON
WITH ISOLATED GUSTS AROUND 20 MPH. BREEZY WINDS AND DRIER
CONDITIONS ARE EXPECTED ON THURSDAY AS A PACIFIC COLD FRONT
APPROACHES THE AREA.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (25-35 PERCENT).
MAX TEMPERATURE.....AROUND 55.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 3-6 MPH BECOMING SOUTHWEST
                    AROUND 10 TO 15 MPH AND GUSTY IN THE
                    AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4500-7000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 11 MPH.
SMOKE DISPERSAL.....FAIR TO EXCELLENT (25500-68400 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....AROUND 30.
MAX HUMIDITY........85 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 10 MPH IN THE EVENING
                    BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2300 FT AGL DECREASING TO 100 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 12 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (1300-29800 KNOT-FT).

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....AROUND 64.
MIN HUMIDITY........15 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTH 15 TO
                    20 MPH WITH GUSTS AROUND 30 MPH IN THE LATE
                    MORNING AND AFTERNOON.
CWR.................10 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5900 FT AGL INCREASING TO 10800 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 17 MPH.
SMOKE DISPERSAL.....GOOD TO EXCELLENT (57300-191600 KNOT-FT).

$$
REQUESTED BY...FELIX VALDEZ
TYPE OF REQUEST...PRESCRIBED
.TAG 20120404.MORTE.01/CYS