FNUS73 KUNR 292110
FWSUNR

SPOT FORECAST FOR HERMOSA FUELS PB...SDS
NATIONAL WEATHER SERVICE RAPID CITY SD
210 PM MST TUE JAN 29 2013

FORECAST IS BASED ON IGNITION TIME OF 1410 MST ON JANUARY 29.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...
THE LEADING EDGE OF AN ARCTIC AIRMASS IS POISED TO DROP INTO THE BLACK HILLS
REGION THIS EVENING AND SLOWLY WORK ITS WAY ACROSS THE NORTHERN PLAINS THE
NEXT COUPLE OF DAYS. MUCH COLDER TEMPERATURES ACCOMPANIED BY PERIODS OF
MOSTLY LIGHT SNOW WILL DOMINATE THE NEXT COUPLE OF DAYS. NORTHWEST WINDS
WILL INCREASE OVER THE BURN AREA LATER THIS EVENING GUSTING TO OVER 35
MPH DURING THE OVERNIGHT HOURS. WEDNESDAYS MAXIMUM TEMPERATURE WILL
LIKELY BE REACHED EARLY WITH TEMPERATURES FALLING INTO THE SINGLE DIGITS
DURING THE DAY.

.REST OF TODAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........33 AT IGNITION...MAX 35.
RH..................53 PERCENT AT IGNITION...MIN 45 PERCENT.
WIND (20 FT)........WINDS NORTH AT 17 MPH AT IGNITION...OTHERWISE
                    NORTH WINDS 16 TO 18 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3200 TO 3700 FT AGL.
TRANSPORT WINDS.....NORTHWEST 25 TO 29 MPH.
SMOKE DISPERSAL.....GOOD.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW.
TEMPERATURE.........MIN 7.
RH..................MAX 83 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 16 TO 24 MPH WITH GUSTS TO
                    AROUND 35 MPH DECREASING TO 7 TO 14 MPH AFTER
                    MIDNIGHT.
CWR.................14 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000 TO 1500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 21 TO 30 MPH BECOMING WEST 9 TO 17
                    MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW IN THE
                    AFTERNOON.
TEMPERATURE.........MAX 24.
RH..................MIN 52 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 8 MPH.
CWR.................8 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2900 TO 3400 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 16 MPH INCREASING TO NORTHWEST 21 TO
                    26 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....FAIR INCREASING TO GOOD IN THE AFTERNOON.

$$
FORECASTER...DC
REQUESTED BY...CHRIS BLAIR
TYPE OF REQUEST...PRESCRIBED
.TAG 20130129.HERMO.01/UNR