FNUS75 KBYZ 301439
FWSBYZ

SPOT FORECAST FOR BLACK SPRINGS RX U-5...NORTHERN CHEYENNE AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
839 AM MDT THU SEP 30 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON SEPTEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

DRY CONDITIONS WILL PREVAIL AT THE SITE TODAY AND FRIDAY.
TEMPERATURES WILL BE SLIGHTLY WARMER AND RELATIVE HUMIDITIES
SLIGHTLY LOWER TODAY THAN WEDNESDAY. A WEAK COLD FRONT WILL MOVE
ACROSS THE SITE EARLY FRIDAY MORNING. FRONTAL PASSAGE WILL BE
DRY. TEMPERATURES FOR FRIDAY WILL BE SLIGHTLY COOLER WITH HIGHER
RELATIVE HUMIDITIES. BRS

.TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....74-79.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 5 TO 10 MPH.
 RIDGETOP...........SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......4000 FT AGL.
MIXING WINDS........SOUTHWEST WINDS 5 TO 15 MPH.

.TONIGHT...

SKY/WEATHER.........CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........50-55 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 5 TO 10 MPH.
 RIDGETOP...........NORTHEAST 10 TO 15 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........NORTHEAST 5 TO 10 MPH.

.FRIDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....71-76.
MIN HUMIDITY........28-33 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 5 TO 10 MPH.
 RIDGETOP...........EAST 10 TO 15 MPH.
MIXING HEIGHT.......3500 FT AGL.
MIXING WINDS........NORTHEAST 5 TO 10 MPH.

$$
FORECASTER...TESAR/SCHUKNECHT
REQUESTED BY...RAY HART
TYPE OF REQUEST...PRESCRIBED
.TAG 20100930.BLACK.01/BYZ