FNUS75 KBYZ 031603
FWSBYZ

SPOT FORECAST FOR BLACK SPRINGS RX UNIT 4...NORTHERN CHEYENNE
NATIONAL WEATHER SERVICE BILLINGS MT
1003 AM MDT SAT OCT 3 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON OCTOBER 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
WINDS WILL BECOME NORTHEASTERLY TODAY AS AN AREA OF LOW PRESSURE
DEVELOPS OVER THE GREAT BASIN. EXPECT TEMPERATURES TO BE A BIT
WARMER THAN FRIDAY BUT WINDS TO BE NOT NEARLY AS STRONG. BY
SUNDAY THE NORTHEASTERLY WINDS WILL BEGIN BRINGING HIGHER HUMIDITY
AND COOLER TEMEPRATURES TO THE BURN SITE WHILE A DEVELOPING STORM
SYSTEM OVER NEVADA BEGINS TO SPREAD CLOUDS OVER THE SITE. BY
SUNDAY NIGHT A RAIN SNOW MIX IS POSSIBLE WITH ACCUMULATING SNOW
EXPECTED FOR MONDAY. BORSUM
.TODAY...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....54-59.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT WINDS IN THE MORNING BECOMING NORTHEAST 5
                    TO 10 MPH IN THE AFTERNOON.
 RIDGETOP...........NORTH 5 TO 15 MPH.
MIXING HEIGHT.......6500 FT AGL.
MIXING WINDS........NORTH 5 TO 15 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....33-37.
MAX HUMIDITY........79-84 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 5 TO 10 MPH.
 RIDGETOP...........SOUTHEAST 5 TO 10 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........EAST 5 TO 15 MPH.

.SUNDAY...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN AND SNOW SHOWERS.
CWR.................27 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....41-46.
MIN HUMIDITY........72-77 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 5 TO 15 MPH.
 RIDGETOP...........EAST 10 TO 20 MPH.
MIXING HEIGHT.......5000 FT AGL.
MIXING WINDS........EAST 15 TO 25 MPH.

$$
FORECASTER...BORSUM
REQUESTED BY...RAY HART
TYPE OF REQUEST...PRESCRIBED
.TAG 20091003.BLACK.01/BYZ