FNUS75 KBYZ 022045
FWSBYZ

SPOT FORECAST FOR PICKET PIN RX...USFS, CUSTER, BEARTOOTH RD
NATIONAL WEATHER SERVICE BILLINGS MT
245 PM MDT MON APR 2 2012

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON APRIL 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
EXPECT GOOD HUMIDITY RECOVERY WITH DOWNSLOPE/DOWNVALLEY WINDS TONIGHT.
ON TUESDAY...WINDS ACROSS MOST OF THE BURN SITE WILL BE SOUTHWEST WITH
SOME GUSTS OVER 15 MPH DURING THE AFTERNOON. HOWEVER...OBSERVATIONS WE
OBTAINED ON MARCH 29TH 2012 SUGGEST THAT THE MIDDLE AND TOP OF UNIT 2
AT THE PROJECT SITE WILL LIKELY HAVE UPSLOPE...EDDYING EASTERLY WINDS
OF 3 TO 6 MPH ON TUESDAY. MINIMUM RELATIVE HUMIDITY ON TUESDAY WILL BE
NEAR 25 PERCENT. ON WEDNESDAY...WINDS WILL BE A BIT STRONGER...AND THE
MINIMUM HUMIDITY WILL LIKELY BE CLOSER TO 20 PERCENT. SCHULTZ/TWH

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....22-27.
MAX HUMIDITY........68-73 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNSLOPE/DOWNVALLEY AT 3 TO 5 MPH.
 RIDGETOP...........SOUTHWEST 5 TO 10 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........DOWNSLOPE/DOWNVALLEY 3 TO 5 MPH.

.TUESDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....58-63.
MIN HUMIDITY........22-27 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 7 TO 12 MPH WITH GUSTS TO
                    16 MPH. THE EXCEPTION WILL BE THE MIDDLE AND
                    TOP OF UNIT 2 ON THE PROJECT SITE...WHERE
                    UPSLOPE...EDDYING EASTERLY WINDS OF 3 TO 6
                    MPH WILL LIKELY OCCUR.
 RIDGETOP...........SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......5000 FT AGL.
MIXING WINDS........SOUTHWEST 10 TO 15 MPH.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...
PARTLY CLOUDY. LOWS 33 TO 38. HIGHS 58 TO 63. SOUTHWEST WINDS
12 TO 17 MPH. AFTERNOON GUSTS TO 25 MPH.
.THURSDAY...
MOSTLY CLOUDY. SCATTERED RAIN OR SNOW SHOWERS. LOWS 31 TO 36.
HIGHS 50 TO 59. WEST WINDS 5 TO 10 MPH.
.FRIDAY...
MOSTLY CLOUDY. RAIN AND SNOW SHOWERS. LOWS 27 TO 32. HIGHS
40 TO 50. NORTH WINDS 5 TO 10 MPH.
.SATURDAY...
MOSTLY CLOUDY. SCATTERED RAIN AND SNOW SHOWERS. LOWS 23 TO 28.
HIGHS 37 TO 42. NORTHWEST WINDS 5 TO 10 MPH.

$$
FORECASTER...SCHULTZ/HUMPHREY
REQUESTED BY...DREW GRIMES
TYPE OF REQUEST...PRESCRIBED
.TAG 20120403.PICKE.01/BYZ