629
FNUS74 KOUN 181855
FWSOUN

Spot Forecast for Gracemont...USWFS
National Weather Service Norman OK
155 PM CDT Fri Sep 18 2026

Forecast is based on forecast start time of 1600 CDT on September 18.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (405) 325-3816 if you have questions
or concerns with this forecast.

.DISCUSSION...
Elevated fire weather conditions expected to continue into Saturday.
Hot and dry conditions are expected again Saturday afternoon with
south to southwest winds at 10 to 15 mph with higher gusts.

Any rain chances at the fire are expected to hold off until late
Saturday evening/overnight into Sunday. However, showers/storms are
expected to develop to the west and northwest of the fire late
Saturday afternoon/evening. This activity may cause outflow boundary(ies)
to approach and/or move across the fire location causing wind
shift/change in speed. Currently, this probability is low but
definitely is something to keep an eye on.

.TONIGHT...

Sky/weather.........Clear then becoming mostly clear late in the
                    evening then becoming partly cloudy then
                    becoming mostly clear after 3 am.
Min temperature.....Around 73.
Max humidity........66 percent.
Wind (20 ft)........South winds 8 to 12 mph.
Mixing height.......500 ft AGL.
Transport winds.....South 15 to 18 mph.
Smoke dispersal.....Poor to excellent (6100-100200 knot-ft).

TIME (CDT)      6 PM         10 PM        2 AM
Sky (%).........3            11           36
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
Temp............96           85           80
RH..............30           44           52
20 FT wind dir..S            S            S
20 FT wind spd..12           9            9
20 FT wind gust.20           16           16
Mix hgt (ft)....7700         500          500
Transport wind..S 15         S 16         S 17
VRate ktft/1000.100          7            7

.SATURDAY...

Sky/weather.........Sunny then becoming mostly sunny late in the
                    afternoon then becoming sunny.
Max temperature.....Around 99.
Min humidity........31 percent.
Wind (20 ft)........South winds 9 to 14 mph.
Mixing height.......8800 ft AGL.
Transport winds.....South 14 to 21 mph.
Smoke dispersal.....Poor to excellent (6100-105800 knot-ft)
                    increasing to excellent (108000-114300 knot-ft)
                    late in the afternoon.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........7         3         6         22
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Temp............75        79        93        97
RH..............63        60        41        34
20 FT wind dir..S         S         SW        S
20 FT wind spd..9         12        14        13
20 FT wind gust.16        20        23        21
Mix hgt (ft)....500       1300      5700      8500
Transport wind..S 16      S 20      SW 16     S 14
VRate ktft/1000.7         23        81        102

$$
Forecaster...MAXWELL
Requested by...James Atkins
Type of request...WILDFIRE
.TAG 2622022.2/OUN
.DELDT 09/18/26
.FormatterVersion 2.0.0
.EMAIL james.atkins@usda.gov