FNUS75 KCYS 111551
FWSCYS

SPOT FORECAST FOR 130 190 FIRE EXERCISE...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
951 AM MDT WED APR 11 2012

FORECAST IS BASED ON IGNITION TIME OF 0955 MDT ON APRIL 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING...

.DISCUSSION...CRITICAL FIRE WEATHER CONDITIONS WILL PREVAIL TODAY
WITH WINDS GUSTING TO 35 MPH AND RELATIVE HUMIDITIES FALLING UNDER
15 PERCENT THIS AFTERNOON...WITH A RED FLAG WARNING IN EFFECT UNTIL
6 PM. SURFACE LOW PRESSURE WILL STRENGTHEN OVER SOUTHWEST WYOMING
THIS AFTERNOON. ISOLATED SHOWERS AND THUNDERSTORMS WILL DEVELOP
THIS AFTERNOON AND CONTINUE INTO THE EVENING...PRODUCING GUSTY
AND ERRATIC WINDS. A COLD FRONT WILL MOVE ACROSS THE BURN AREA
LATE THIS EVENING WITH SOUTHWEST WINDS INCREASING TO 25 TO 35 MPH
GUSTING TO 45 MPH. COOLER AND WINDY WEATHER WILL PREVAIL ON
THURSDAY WITH HUMIDITIES NOT AS LOW AS TODAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (45-55 PERCENT). SLIGHT CHANCE OF
                    SHOWERS AND THUNDERSTORMS AFTER 2 PM.
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........13 PERCENT.
WIND (20 FT)........SOUTH WIND 15 TO 25 MPH WITH GUSTS TO 35 MPH
                    BECOMING SOUTHEAST AT SAME SPEEDS AFTER 3 PM.
CWR.................0 PERCENT INCREASING TO 20 PERCENT IN THE
                    AFTERNOON.
LAL.................2.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (55-65 PERCENT). CHANCE OF
                    SHOWERS AND THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........57 PERCENT.
WIND (20 FT)........SOUTH WIND 15 TO 25 MPH WITH GUSTS TO 35 MPH
                    IN THE EVENING...BECOMING SOUTHWEST 25 TO 35
                    MPH WITH GUSTS TO 45 MPH BY MIDNIGHT...THEN
                    WINDS SOUTHWEST 15 TO 25 MPH GUSTING TO 35 MPH
                    AFTER 3 AM.
CWR.................30 PERCENT DECREASING TO 10 PERCENT AFTER
                    MIDNIGHT.
LAL.................3.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (55-65 PERCENT). CHANCE OF RAIN
                    SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........29 PERCENT.
WIND (20 FT)........SOUTHWEST WIND 25 TO 35 MPH WITH GUSTS TO
                    45 MPH.
CWR.................30 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

$$
FORECASTER...RUBIN
REQUESTED BY...ANDY WILLIAMS
TYPE OF REQUEST...PRESCRIBED
.TAG 20120411.13019.01/CYS