057
FNUS74 KHUN 210938
FWSHUN
SPOT FORECAST FOR SPEAR RX...USFS
NATIONAL WEATHER SERVICE HUNTSVILLE AL
438 AM CDT WED OCT 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON OCTOBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
DRY CONDITIONS ARE FORECAST THROUGH THE WEEK. AT IGNITION TIME, MIXING
HEIGHTS ARE FORECAST TO BE 500FT ALONG WITH LIGHT/VARIABLE TRANSPORT
WINDS FROM THE N-NE. BY NOON, MIXING HEIGHTS ARE FORECAST TO RISE ABOVE
3000FT. AND WILL REMAIN IN THE 3000-4000FT RANGE UNTIL BETWEEN 4-5 PM
WHEN MIXING HEIGHTS DECREASE BELOW 2000FT ONCE AGAIN AND REMAIN UNDER
1000FT OVERNIGHT INTO THURSDAY. MIN RH VALUES ARE FORECAST TO DROP TO
NEAR 30%.
SIMILAR CONDITIONS ANTICIPATED THURSDAY DURING WHICH MIXING HEIGHTS
REMAIN UNDER 2000FT UNTIL BETWEEN 11 AM AND NOON. TRANSPORT WINDS ARE
FORECAST TO BE AROUND 8-12 MPH FROM THE N-NE. MIN RH VALUES WILL LIKELY
DROP TO AROUND 30-35%.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-5 PERCENT).
TEMPERATURE.........55 AT IGNITION...MAX 76.
RH..................77 PERCENT AT IGNITION...MIN 31 PERCENT.
WIND (20 FT)........WINDS NORTH AT 0 MPH AT IGNITION...OTHERWISE
LIGHT WINDS.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
MIXING HEIGHT.......500 FT AGL AT IGNITION...OTHERWISE 4900 FT AGL.
TRANSPORT WINDS.....NORTHEAST 5 TO 6 MPH.
LVORI...............4.
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........1 1 0 0 2 2 3 2 3
WEATHER COV.....
WEATHER TYPE....
TEMP............55 63 68 72 74 75 76 74 73
RH..............77 58 47 40 35 32 31 32 35
20 FT WIND DIR..000 000 000 000 000 000 000 010 000
20 FT WIND SPD..0 0 0 0 0 0 0 1 0
20 FT WIND GUST.3 5 3 3 5 5 6 7 6
MIX HGT (KFT)...0.5 0.8 1.7 3.2 4.4 4.7 4.9 4.6 1.9
TRANSP WIND DIR.050 060 040 030 020 020 020 010 000
TRANSP WIND SPD.5 5 5 6 6 6 6 6 6
DISPERSION IDX..2 2 10 23 32 34 35 34 15
LVORI...........6 2 2 2 1 1 1 2 2
CWR.............0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0
TONIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT).
TEMPERATURE.........MIN 44.
RH..................MAX 92 PERCENT.
WIND (20 FT)........LIGHT WINDS.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTH 5 TO 9 MPH.
LVORI...............4.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........2 2 1 4 2 1 3 1 3 1 2 7
WEATHER COV.....
WEATHER TYPE....
TEMP............69 60 56 54 53 51 50 50 48 47 46 46
RH..............47 69 77 80 83 86 86 83 86 86 87 87
20 FT WIND DIR..000 000 000 000 000 000 000 000 000 350 350 350
20 FT WIND SPD..0 0 0 0 0 0 0 0 0 1 1 1
20 FT WIND GUST.6 6 5 5 5 6 7 7 8 9 10 10
MIX HGT (KFT)...0.5 0.3 0.4 0.3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.000 010 000 000 010 020 010 010 010 010 020 010
TRANSP WIND SPD.5 6 6 7 7 7 8 9 9 9 9 9
DISPERSION IDX..3 2 2 2 3 3 4 4 4 4 4 4
LVORI...........2 4 4 4 5 5 5 5 5 5 6 6
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
THURSDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
TEMPERATURE.........MAX 74.
RH..................MIN 33 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH AROUND 5 MPH IN THE
AFTERNOON, THEN BECOMING LIGHT LATE IN THE
AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
MIXING HEIGHT.......4200 FT AGL.
TRANSPORT WINDS.....NORTH 8 TO 12 MPH.
LVORI...............4.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........11 11 7 4 0 0 0 1 1 2 1 2
WEATHER COV.....
WEATHER TYPE....
TEMP............45 44 47 55 63 67 71 72 73 74 73 72
RH..............87 88 92 78 58 50 41 37 34 33 34 36
20 FT WIND DIR..350 350 350 010 010 020 020 020 020 010 010 000
20 FT WIND SPD..1 1 2 2 2 3 5 5 5 5 5 2
20 FT WIND GUST.10 10 10 9 9 10 12 12 12 12 13 10
MIX HGT (KFT)...0.4 0.4 0.4 0.8 1.2 2.1 3.0 3.6 4.1 4.2 4.2 1.7
TRANSP WIND DIR.010 020 020 020 030 030 030 030 020 020 010 010
TRANSP WIND SPD.9 8 8 8 9 9 10 10 10 10 12 8
DISPERSION IDX..4 4 4 4 4 24 38 45 50 51 57 18
LVORI...........6 6 6 6 2 2 2 1 1 1 2 2
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
FORECASTER...CRAMER
REQUESTED BY...CRAIG
TYPE OF REQUEST...PRESCRIBED
.TAG 2624192.0/HUN
.DELDT 10/21/26
.FORMATTERVERSION 2.0.0
.EMAIL GARY.C.MOORE@USDA.GOV,KERRY.CLARK@USDA.GOV
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