FNUS75 KBYZ 032135
FWSBYZ

SPOT FORECAST FOR DONNELLY FIRE...CUSTER COUNTY FIRE
NATIONAL WEATHER SERVICE BILLINGS MT
335 PM MDT SAT AUG 3 2013

FORECAST IS BASED ON REQUEST TIME OF 1514 MDT ON AUGUST 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
THERE IS A GOOD CHANCE OF STRONG TO SEVERE THUNDERSTORMS
AFFECTING THE FIRE SITE. STORMS WILL DEVELOP OVER THE AREA LATE
THIS AFTERNOON AND MOVE ACROSS THE FIRE SITE VICINITY EARLY THIS
EVENING. WIND GUSTS NEAR THUNDERSTORMS COULD REACH 50 PLUS MPH
WITH STORMS AROUND AND AFTER SUNSET. OTHERWISE...LARGE HAIL IS THE
PRIMARY THREAT WITH STORMS. EASTERLY WINDS WILL PREVAIL THROUGH
MID EVENING...TURNING NORTHWESTERLY AFTER MIDNIGHT. RH
RECOVERY OVERNIGHT SHOULD BE GOOD. THE CHANCE OF STORMS DECREASES
SUNDAY WITH WARMER AND SOMEWHAT LOWER HUMIDITY. BT

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. THUNDERSTORMS LIKELY IN THE
                    EVENING...THEN SCATTERED SHOWERS AND
                    THUNDERSTORMS OVERNIGHT. SOME THUNDERSTORMS MAY
                    BE SEVERE IN THE EVENING.
CWR.................35 PERCENT.
LAL.................4...16 TO 25 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....56-61.
MAX HUMIDITY........84-92 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......EAST WINDS 12 TO 18 MPH. BECOMING NORTHWEST 5 TO
                    15 MPH AFTER MIDNIGHT. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........SOUTH EARLY...BECOMING WESTERLY LATE AT 10 TO 20 MPH.
HAINES INDEX........4.

.SUNDAY...

SKY/WEATHER.........MOSTLY SUNNY. ISOLATED SHOWERS AND
                    THUNDERSTORMS AFTER 3 PM.
CWR.................11 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....81-86.
MIN HUMIDITY........30-37 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 5 TO 10 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
 RIDGETOP...........NORTHWEST 10 TO 20 MPH.
HAINES INDEX........4.

$$
FORECASTER...TESAR
REQUESTED BY...BUD PETERSON
TYPE OF REQUEST...WILDFIRE
.TAG 20130803.DONNE.01/BYZ