FNUS73 KUNR 190018
FWSUNR

SPOT FORECAST FOR THRALL...GREAT PLAINS DISPATCH
NATIONAL WEATHER SERVICE RAPID CITY SD
618 PM MDT THU OCT 18 2012

FORECAST IS BASED ON REQUEST TIME OF 1809 MDT ON OCTOBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...HIGH PRESSURE BUILDING INTO THE NORTHERN PLAINS WILL
BRING MOSTLY CLEAR SKIES AND LIGHT WINDS TO THE BURN AREA THROUGH
FRIDAY. RELATIVE HUMIDITIES ON FRIDAY WILL DROP TO AROUND 20
PERCENT IN THE AFTERNOON. MILD AND DRY CONDITIONS EXPECTED
SATURDAY...WITH A WEAK COLD FRONT MOVING THROUGH SATURDAY NIGHT
INTO SUNDAY.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....AROUND 27.
MAX HUMIDITY........50 PERCENT.
WIND (20 FT)........DOWNSLOPE 3 TO 7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......200 TO 700 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
SMOKE DISPERSAL.....POOR.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........19 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 4 TO 8 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3900 TO 4900 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
SMOKE DISPERSAL.....GOOD.

$$
FORECASTER...JJ
REQUESTED BY...THRALL LOOKOUT
TYPE OF REQUEST...WILDFIRE
.TAG 20121018.THRAL.01/UNR