FNUS73 KUNR 251645
FWSUNR

SPOT FORECAST FOR MCKENNA SPRINGS...SD-BKF
NATIONAL WEATHER SERVICE RAPID CITY SD
1045 AM MDT MON JUN 25 2012

FORECAST IS BASED ON REQUEST TIME OF 1022 MDT ON JUNE 25.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

...RED FLAG WARNING IN EFFECT FROM 10 AM TUESDAY TO MIDNIGHT MDT
TUESDAY NIGHT...

.DISCUSSION...AN UPPER LEVEL RIDGE WILL BRING HOT WEATHER TO THE
FIRE AREA THIS WEEK. PERSISTENT EASTERLY FLOW WILL KEEP HUMIDITIES
UP THIS AFTERNOON AND MOST OF TONIGHT...BUT WINDS SWITCHING TO A
WESTERLY DIRECTION TUESDAY WILL CAUSE DRAMATIC DROPS IN RELATIVE
HUMIDITY...AS WELL AS TEMPERATURES SOARING INTO THE UPPER 90S.
MINIMUM RELATIVE HUMIDITIES TUESDAY AFTERNOON WILL BE AROUND 12
PERCENT.

ISOLATED THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON AND
THIS EVENING...AND THEN AGAIN TUESDAY AFTERNOON. ANY STORM WILL
CONTAIN ERRATIC GUSTY WINDS.

.TODAY...

SKY/WEATHER.........BECOMING MOSTLY SUNNY WITH CUMULUS CLOUDS.
                    ISOLATED AFTERNOON THUNDERSTORMS POSSIBLE.
MAX TEMPERATURE.....AROUND 92.
MIN HUMIDITY........32 PERCENT.
WIND (20 FT)........EAST WINDS 10 TO 16 MPH WITH GUSTS TO 22 MPH...
                    BECOMING SOUTHEAST.
CWR.................10 PERCENT.
LAL.................1...THEN 2 IN THE AFTERNOON.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6900 TO 7900 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH.
SMOKE DISPERSAL.....BECOMING VERY GOOD.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED EVENING THUNDERSTORMS.
MIN TEMPERATURE.....AROUND 64.
MAX HUMIDITY........75 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 15 MPH.
CWR.................10 PERCENT.
LAL.................2 UNTIL MIDNIGHT...THEN 1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....EAST AROUND 7 MPH.
SMOKE DISPERSAL.....POOR.

.TUESDAY...

SKY/WEATHER.........MOSTLY SUNNY. BECOMING BREEZY.
                    ISOLATED AFTERNOON THUNDERSTORMS
                    CONTAINING ERRATIC GUSTY WINDS.
MAX TEMPERATURE.....AROUND 98.
MIN HUMIDITY........12 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 15 MPH BECOMING WEST
                    15 TO 25 MPH WITH GUSTS TO 35 MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1 IN THE MORNING...THEN 2.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......14300 TO 15300 FT AGL.
TRANSPORT WINDS.....WEST AROUND 30 MPH.
SMOKE DISPERSAL.....EXCELLENT.

$$
FORECASTER...EH
REQUESTED BY...LOOKOUT
TYPE OF REQUEST...WILDFIRE
.TAG 20120625.MCKEN.01/UNR