FNUS75 KGGW 091659
FWSGGW

SPOT FORECAST FOR WEBB WPA...FWS
NATIONAL WEATHER SERVICE GLASGOW MT
1059 AM MDT FRI APR 9 2010

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON APRIL 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR STRONG WINDS AND
LOW HUMIDITIES...

.DISCUSSION...EXPECT WEST WINDS TO BEGIN TO INCREASE SHORTLY AFTER 11 AM
NEAR THE BURN SITE. RELATIVE HUMIDITIES WILL DROP TO NEAR 20 PERCENT BY 3PM.
HIGH PRESSURE TO OUR SOUTHWEST AND LOW PRESSURE TO OUR NORTHEAST WILL CREATE
A TIGHT GRADIENT OVER THE AREA. THE GRADIENT WILL RELAX AS HIGH PRESSURE
MOVES NORTHEASTWARD IN THE LATE AFTERNOON.

.SATURDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....46-51.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 15 MPH. GUSTS UP TO 25 MPH STARTING AFTER 1PM.
MIXING HEIGHT.......9500 FT AGL.
MIXING WINDS........WEST AROUND 25 MPH.

TIME (MDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........12     12     12     10     10     10
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............23     26     38     44     46     48
RH..............61     58     39     28     23     21
20 FT WIND......W 8    W 8    W 10   W 8    W 8    W 7
20 FT WIND GUST.15     15     20     25     25     10

.SATURDAY NIGHT...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MIN TEMPERATURE.....27-32.
MAX HUMIDITY........55-60 PERCENT.
WIND (20 FT)........WEST WINDS AROUND 5 MPH BY 8 PM SHIFTING TO THE
                    SOUTHEAST AROUND 6 MPH AFTER MIDNIGHT.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........NORTH AROUND 5 MPH.

TIME (MDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........36     36     36     48     48     48
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............47     40     35     33     31     31
RH..............20     34     46     50     54     57
20 FT WIND......W 4    W 4    W 4    SE 5   SE 5   SE 5
20 FT WIND GUST.5      5      5      10     10     10

.SUNDAY...
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT).
MAX TEMPERATURE.....50-55.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 7 MPH.
MIXING HEIGHT.......5300 FT AGL.
MIXING WINDS........EAST AROUND 21 MPH.

TIME (MDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........60     60     60     60     60     60
WEATHER COV.....S CHC  S CHC  S CHC  S CHC  S CHC  S CHC
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TEMP............29     32     42     48     51     52
RH..............60     57     45     38     34     33
20 FT WIND......SE 6   SE 6   SE 6   E 6    E 6    E 6
20 FT WIND GUST.10     10     10     10     10     10

$$
FORECASTER...SHALLENBERGER
REQUESTED BY...JIM FORSYTHE
TYPE OF REQUEST...PRESCRIBED
.TAG 20100410.WEBBW.01/GGW