FNUS75 KBYZ 282116
FWSBYZ

SPOT FORECAST FOR FLAMING ARROW...GALLATIN COUNTY
NATIONAL WEATHER SERVICE BILLINGS MT
316 PM MDT MON SEP 28 2009

FORECAST IS BASED ON REQUEST TIME OF 1449 MDT ON SEPTEMBER 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT TUESDAY...

.DISCUSSION...

...STRONG COLD FRONTAL PASSAGE LATE TUESDAY NIGHT...

GENERAL FLOW OVER THE REGION WILL BE EASTERLY THE REMINDER OF THE
DAY AND INTO THE NIGHT. FOR THE FIRE SITE...THIS SHOULD RESULT IN
LIGHT UPSLOPE WINDS THE REST OF TODAY...AND LIGHT DOWNSLOPE WINDS
OVERNIGHT. RH RECOVERIES WILL BE IN THE 40 TO 50 PERCENT RANGE.
TUESDAY...INCREASING SOUTHWEST FLOW IS EXPECTED AHEAD OF THE
APPROACHING WEATHER SYSTEM. SOUTH WINDS MAY FUNNEL UP THE CANYON
BECOMING 13 TO 25 MPH AT TIMES AND GUSTY BY AFTERNOON. RH
READINGS WILL DROP INTO THE UPPER TEENS AT THE FIRE SITE. THERE
IS JUST A SLIGHT CHANCE OF A SHOWER OR THUNDERSTORM IN THE
AFTERNOON.


.REST OF TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....69-74.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT NORTHERLY WINDS 5 TO 11 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....42-46.
MAX HUMIDITY........42-51 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT DOWNSLOPE/GENERALLY SOUTH TO WEST
                    WINDS 5 TO 10 MPH.

.TUESDAY...

SKY/WEATHER.........BECOMING PARTLY CLOUDY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................10 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....70-75.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH EARLY...BECOMING
                    13 TO 25 MPH AT TIMES IN THE AFTERNOON. GUSTY
                    AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.

$$
FORECASTER...TESAR
REQUESTED BY...PATRICK LONERGAN
TYPE OF REQUEST...WILDFIRE
.TAG 20090928.FLAMI.01/BYZ