064
FNUS74 KTSA 111211
FWSTSA

Spot Forecast for North Mac Rx...BIA Eastern Oklahoma Region
National Weather Service Tulsa OK
711 AM CDT Thu Sep 11 2025

Forecast is based on ignition time of 1200 CDT on September 11.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact NWS Tulsa at (918)838-7838, if you have questions
or concerns with this forecast.

.DISCUSSION...

Mostly sunny conditions expected today with a south wind of 5-10
mph, and temperatures in the mid 80s at ignition time. High
temperatures today will climb into the low 90s with minimum RH of
35-40 percent. Rain is not expected today. Overnight mostly clear
conditions will continue with RH rising to near 70 percent and
light winds.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 92.
Min humidity........37 percent.
Dewpoint............62.
Wind (20 ft)........South winds around 5 mph early in the afternoon
                    becoming light.
Mixing height.......5000 ft AGL.
Transport winds.....Southwest 7 to 8 mph.
Smoke dispersal.....Fair (19016 knot-ft) early in the morning
                    increasing to good (33442 knot-ft) in the
                    afternoon.
Stability class.....3.
1700FT Avg MIX T(F).89.

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P
Sky (%).........11  7   6   6   6   5
Weather cov.....
Weather type....
Tstm cov........
Temp............84  88  90  91  92  91
Dewpoint........63  63  63  62  62  63
RH..............49  43  41  38  37  40
20 FT wind dir..S   S   S   S   S   S
20 FT wind spd..5   5   5   5   4   4
20 FT wind gust.8   8   8   8   6   6
Mix hgt (kft)...2.7 3.7 4.5 5.0 4.8 4.6
Transp wind dir.SW  SW  SW  SW  S   S
Transp wind spd.8   8   7   7   7   8
Vrate kt-ft/1K..19  33  33  33  33  33
Ventrate Cat....PR  PR  PR  PR  PR  PR
1700FT Mix T(F).87  88  90  91  92  92

.TONIGHT...

Sky/weather.........Mostly clear (0-10 percent).
Min temperature.....Around 67.
Max humidity........90 percent.
Dewpoint............64.
Wind (20 ft)........Light winds.
Mixing height.......400 ft AGL.
Transport winds.....South 7 to 9 mph.
Smoke dispersal.....Good (33442 knot-ft) early in the evening
                    decreasing to poor (2622 knot-ft) late in the
                    night.
Stability class.....5.
1700FT Avg MIX T(F).90.

TIME (CDT)      1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P MID
Sky (%).........4   3   3   3   4   4   5   6   7   9   10  11
Weather cov.....
Weather type....
Tstm cov........
Temp............90  86  81  77  75  74  72  71  70  69  69  68
Dewpoint........64  65  65  65  65  65  65  65  65  64  64  64
RH..............42  50  58  67  71  74  79  81  84  84  84  87
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..4   4   4   4   4   4   4   4   4   3   3   3
20 FT wind gust.6   6   6   6   6   6   6   6   6   5   5   5
Mix hgt (kft)...3.0 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.8   7   7   7   8   8   7   8   8   8   9   8
Vrate kt-ft/1K..33  3   3   3   3   3   3   3   3   3   3   3
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR
1700FT Mix T(F).92  91  91  91  90  90  90  89  89  89  89  89

.FRIDAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 92.
Min humidity........43 percent.
Dewpoint............66.
Wind (20 ft)........Light winds becoming south around 5 mph in the
                    afternoon.
Mixing height.......6400 ft AGL.
Transport winds.....Southwest 8 to 12 mph.
Smoke dispersal.....Poor (3278 knot-ft) early in the morning
                    increasing to good (51803 knot-ft) in the
                    afternoon.
Stability class.....4.
1700FT Avg MIX T(F).89.

TIME (CDT)      1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A 12P
Sky (%).........12  14  10  7   3   3   4   4   5   6   6   5
Weather cov.....
Weather type....
Tstm cov........
Temp............68  67  71  76  81  85  87  89  91  92  92  91
Dewpoint........64  64  65  67  68  68  68  68  67  67  66  67
RH..............87  90  81  74  65  57  53  50  45  44  43  45
20 FT wind dir..S   S   S   S   S   S   SW  SW  SW  S   S   S
20 FT wind spd..3   3   3   4   4   5   5   5   5   5   5   4
20 FT wind gust.5   5   5   6   6   8   8   8   8   8   8   6
Mix hgt (kft)...0.4 0.4 0.4 0.7 1.3 2.7 4.3 5.6 6.3 6.4 5.9 4.2
Transp wind dir.S   S   SW  SW  SW  SW  SW  SW  SW  SW  S   S
Transp wind spd.8   8   9   10  12  12  10  9   9   8   8   8
Vrate kt-ft/1K..3   40  40  40  40  40  40  52  52  52  52  52
Ventrate Cat....PR  FR  FR  FR  FR  FR  FR  FR  FR  FR  FR  FR
1700FT Mix T(F).89  88  88  87  87  88  88  89  90  91  92  92

$$
Forecaster...D.HODGES
Requested by...Josh Williams
Type of request...PRESCRIBED
.TAG 2521784.0/TSA
.DELDT 09/11/25
.FormatterVersion 2.0.0
.EMAIL ryan.morrison@bia.gov,joshuad.williams@bia.gov,andrew.carr@bia.gov