971
FNUS73 KDLH 211907
FWSDLH
SPOT FORECAST FOR SHACK RX...USFS
NATIONAL WEATHER SERVICE DULUTH MN
207 PM CDT MON SEP 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 CDT ON SEPTEMBER 22.
IF THERE ARE QUESTIONS OR CONCERNS WITH THIS FORECAST, OR IF
CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE IN DULUTH AT 218-729-0653.
DISCUSSION
EASTERLY TRANSPORT AND 20-FOOT WINDS PREVAIL THIS FORECAST PERIOD
AT THE FIRE SITE. MINIMUM RELATIVE HUMIDITY DROPS TO AROUND 50%
EACH DAY AND RECOVERS TO 100% EACH NIGHT WITH EARLY MORNING FROST
LIKELY. EXPECT SEASONABLY COOL TEMPERATURES EACH DAY AND NO RAIN
OR SNOW SHOWER CHANCES.
TUESDAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). PATCHY FROST
EARLY IN THE MORNING.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 56.
MIN HUMIDITY........51 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 7 MPH EARLY
IN THE MORNING.
MIXING HEIGHT.......2400 FT AGL INCREASING TO 2500 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....EAST 9 TO 16 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (3900-22500 KNOT-FT) INCREASING TO
FAIR TO GOOD (25200-33200 KNOT-FT) LATE IN THE
MORNING.
PCPN AMOUNT.........0.00 INCHES.
TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......PC PC PC PC PC MCR MCR MCR CLR CLR CLR
WEATHER COV.....PTY
WEATHER TYPE....FST
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0
TEMP............36 40 44 49 51 54 55 55 56 55 54
RH..............100 100 93 77 66 57 55 53 51 53 59
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE E
20 FT WIND SPD..3 4 5 6 6 6 6 6 7 7 6
20 FT WIND GUST.9 12 14 15 15 15 15 15 15 16 16
MIX HGT (KFT)...0.5 0.7 1.2 1.9 2.3 2.4 2.5 2.5 2.4 2.4 1.9
TRANSP WIND DIR.E E SE SE E E SE E E E E
TRANSP WIND SPD.9 9 12 14 15 15 15 15 15 16 15
SDSPL KT-FT/10004 5 12 23 30 32 32 32 32 33 25
TUESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 6 MPH IN THE EVENING AND
OVERNIGHT BECOMING LIGHT.
MIXING HEIGHT.......1300 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 15 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (3100-17500 KNOT-FT).
PCPN AMOUNT.........0.00 INCHES.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......CLR CLR MCR MCR MCR MCR PC PC PC PC PC PC
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............53 47 45 44 44 44 44 44 44 43 42 42
RH..............61 79 86 89 93 96 93 96 96 96 100 96
20 FT WIND DIR..E E E E E E E E E SE SE SE
20 FT WIND SPD..5 4 4 4 5 4 4 4 3 3 3 2
20 FT WIND GUST.15 14 15 15 15 15 14 14 12 11 9 8
MIX HGT (KFT)...1.3 0.7 0.5 0.4 0.4 0.4 0.5 0.5 0.4 0.4 0.4 0.4
TRANSP WIND DIR.E E E E E E E E E SE SE SE
TRANSP WIND SPD.15 12 12 12 13 13 13 12 9 10 12 8
SDSPL KT-FT/100018 7 5 4 5 5 5 5 4 4 4 3
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (75-85 PERCENT) THEN BECOMING
MOSTLY SUNNY (20-30 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 56.
MIN HUMIDITY........57 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 7 MPH EARLY
IN THE MORNING.
MIXING HEIGHT.......2300 FT AGL INCREASING TO 2400 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 8 TO 17 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (3000-14900 KNOT-FT) INCREASING TO
FAIR TO GOOD (19200-35700 KNOT-FT) IN THE LATE
MORNING AND AFTERNOON.
PCPN AMOUNT.........0.00 INCHES.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MC PC MC PC MCR MCR MCR MCR MCR MCR CLR MCR
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............41 40 43 47 50 53 55 56 56 56 56 54
RH..............96 100 100 89 77 69 61 59 59 57 57 64
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..2 3 4 5 6 7 7 7 7 7 6 5
20 FT WIND GUST.8 9 12 14 15 16 16 16 16 16 16 15
MIX HGT (KFT)...0.4 0.5 0.7 1.4 2.1 2.2 2.3 2.4 2.3 2.2 2.1 1.7
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE SE SE SE
TRANSP WIND SPD.8 10 10 13 15 16 17 17 17 16 15 14
SDSPL KT-FT/10003 4 6 15 28 31 34 36 34 31 27 19
FORECASTER...NATHAN
REQUESTED BY...SAMUEL WESTLIN
TYPE OF REQUEST...PRESCRIBED
.TAG 2622155.0/DLH
.DELDT 09/21/26
.FORMATTERVERSION 2.0.0
.EMAIL SAMUEL.WESTLIN@USDA.GOV
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