311
FNUS73 KUNR 010034
FWSUNR
SPOT FORECAST FOR FIR...BIA
NATIONAL WEATHER SERVICE RAPID CITY SD
634 PM MDT FRI SEP 30 2022
FORECAST IS BASED ON FORECAST START TIME OF 1900 MDT ON SEPTEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
WINDS WILL GENERALLY BE WESTERLY EARLY THIS EVENING, WITH A
WEAK FRONTAL BOUNDARY EXPECTED TO SWITCH WINDS TO THE NORTHWEST CLOSE TO
9 PM. MAIN CHANCES FOR SHOWERS AND POSSIBLY A THUNDERSTORM WILL BE LATER
THIS EVENING AND INTO THE OVERNIGHT HOURS. CHANCE FOR WETTING RAIN
LOOKS FAIRLY LOW. HOWEVER, HUMIDITY RECOVERY LATE TONIGHT SHOULD BE
EXCELLENT. SATURDAY WILL BE COOLER, WITH HIGHER HUMIDITIES. WINDS SHOULD STAY
NORTH TO NORTHWEST THROUGH THE DAY.
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS, MAINLY BETWEEN 8 PM AND 2 AM.
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........90-95 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 10 MPH WITH GUSTS TO 15 MPH EARLY THIS
EVENING BECOMING NORTHWEST 10 TO 15 MPH WITH GUSTS TO
AROUND 20 MPH BETWEEN 8 PM AND 9 PM. NORTHWEST WINDS
DECREASE TO 5 TO 10 MPH AFTER MIDNIGHT. GUSTY AND
ERRATIC WINDS POSSIBLE NEAR ANY THUNDERSTORMS.
CWR.................20 PERCENT.
LAL.................2.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
MIXING HEIGHT.......400 TO 900 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY SUNNY.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........38-42 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 12 MPH BECOMING NORTH EARLY IN THE
AFTERNOON. GUSTS TO AROUND 18 MPH IN THE LATE MORNING
AND AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
FIRE GROWTH.
MIXING HEIGHT.......3900 TO 4400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....FAIR.
SATURDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. CHANCE OF SHOWERS THROUGH THE NIGHT.
MIN TEMPERATURE.....AROUND 49.
MAX HUMIDITY........95-100 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 12 MPH SHIFTING TO THE
SOUTHWEST OVERNIGHT. GUSTY AND ERRATIC WINDS
EXPECTED NEAR ANY THUNDERSTORMS IN THE EVENING.
CWR.................20 PERCENT.
LAL.................2 UNTIL 2400, THEN 1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
FIRE GROWTH.
MIXING HEIGHT.......400 TO 900 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 15 MPH SHIFTING TO THE WEST
OVERNIGHT.
SMOKE DISPERSAL.....POOR.
FORECASTER...ST
REQUESTED BY...MEGAN JAROS
TYPE OF REQUEST...WILDFIRE
.TAG 2218915.0/UNR
.DELDT 09/30/22
.FORMATTERVERSION 2.0.0
.EMAIL MARJOE.JANIS@BIA.GOV
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