683
FNUS74 KMEG 071156
FWSMEG

Spot Forecast for HS IU 36-1 update...USFS
National Weather Service Memphis TN
556 AM CST Fri Mar 7 2025

Forecast is based on ignition time of 1000 CST on March 07.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

MinRH values will fall to near 40%, with minimums likely occurring
between 11 AM and 2 PM. Southerly at ignition time will become
southwesterly after 1 PM through the remainder of the prescribed
burn time. 20 kft winds will be highest between after noon. Winds
will generally be between 10 to 15 mph with gusts up to 25 mph at
times. Fog is not expected today. Hysplit model will be delivered
separately.

.TODAY...

Sky/weather.........Mostly cloudy (65-75 percent).
CWR.................10 percent.
Max temperature.....Around 68.
Min humidity........39 percent.
Dewpoint............31 increasing to 50.
Wind (20 ft)........South winds 5 to 12 mph. Gusts up to 24 mph in
                    the late morning and afternoon.
Mixing height.......3400 ft AGL.
Mixing height (m)...122-1036 meters AGL.
Transport winds.....South 13 to 20 mph shifting to the southwest
                    around 17 mph late in the afternoon.
Transport winds m/s.South 6 to 9 meters/second shifting to the
                    southwest around 8 meters/second late in the
                    afternoon.
Smoke dispersal.....Poor (800 knot-ft).
Rainfall amount.....0.00 inches.

TIME (CST)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........56  73  81  81  81  84  84  81
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   10  10  10  10
Temp............56  60  63  66  67  67  67  66
Dewpoint........36  37  38  41  45  49  50  51
RH..............47  42  39  40  45  52  54  58
20 FT wind dir..S   S   S   S   SW  SW  SW  SW
20 FT wind spd..9   10  12  12  12  10  9   8
20 FT wind gust.18  19  19  19  19  18  18  17
Mix hgt (kft)...1.5 2.3 2.8 2.7 3.2 3.4 1.7 1.4
Mix hgt (km)....0.5 0.7 0.9 0.8 1.0 1.0 0.5 0.4
Transp wind dir.S   S   SW  SW  SW  SW  SW  SW
Transp wind spd.20  23  26  25  28  25  21  17
Trans wind dir..S   S   SW  SW  SW  SW  SW  SW
Trans spd (m/s).9   10  12  11  13  11  9   8
Vrate kt-ft/1K..4   7   10  9   12  12  5   3
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent) then becoming
                    partly cloudy (40-50 percent) then becoming
                    mostly cloudy (50-60 percent) then becoming
                    partly cloudy (25-35 percent).
CWR.................10 percent.
Min temperature.....Around 46.
Max humidity........90 percent.
Dewpoint............53 decreasing to 44.
Wind (20 ft)........Southwest winds 5 to 7 mph with gusts to around
                    16 mph shifting to the north around 5 mph early
                    in the morning.
Mixing height.......700 ft AGL.
Mixing height (m)...213-244 meters AGL.
Transport winds.....Southwest 13 to 16 mph shifting to the
                    northwest 14 to 16 mph overnight.
Transport winds m/s.Southwest around 7 meters/second decreasing to
                    6 to 7 meters/second in the evening and
                    overnight, then shifting to the northwest
                    overnight.
Smoke dispersal.....Poor (1100 knot-ft).
Rainfall amount.....0.00 inches.

TIME (CST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........72  61  55  50  44  37  38  47  53  39  29  22
Weather cov.....
Weather type....
Tstm cov........
CWR.............10  10  10  10  10  10  10  10  0   0   0   0
Temp............64  63  61  60  59  59  58  57  55  54  52  49
Dewpoint........52  53  54  54  55  55  55  54  52  49  46  44
RH..............65  70  78  81  87  87  90  90  90  83  80  83
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  W   W   NW  NW  N
20 FT wind spd..7   7   6   6   5   5   5   5   5   5   5   5
20 FT wind gust.16  16  14  14  14  13  13  13  13  13  13  13
Mix hgt (kft)...0.8 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.8 0.7 0.8 0.8
Mix hgt (km)....0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Transp wind dir.SW  SW  SW  SW  SW  SW  W   W   NW  NW  N   N
Transp wind spd.16  15  15  14  14  13  13  13  16  14  14  14
Trans wind dir..SW  SW  SW  SW  SW  SW  W   W   NW  NW  N   N
Trans spd (m/s).7   7   7   6   6   6   6   6   7   6   6   6
Vrate kt-ft/1K..2   1   1   1   1   1   1   1   2   1   2   2
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.SATURDAY...

Sky/weather.........Mostly sunny (45-55 percent) then becoming
                    mostly cloudy (75-85 percent).
CWR.................10 percent.
Max temperature.....Around 58.
Min humidity........49 percent.
Dewpoint............40.
Wind (20 ft)........North winds 5 to 7 mph.
Mixing height.......2800 ft AGL.
Mixing height (m)...244-853 meters AGL.
Transport winds.....North 13 to 17 mph.
Transport winds m/s.North 6 to 8 meters/second.
Smoke dispersal.....Poor (1600 knot-ft).
Rainfall amount.....0.00 inches.

TIME (CST)      6 AM      9 AM      NOON      3 PM
Sky (%).........30        66        86        84
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         10        10
Temp............47        50        55        58
Dewpoint........42        41        40        39
RH..............83        71        57        49
20 FT wind......N 5G13    N 7G13    N 7G13    NE 7G13
Mix hgt (ft)....800       1800      2500      2800
Mix hgt (m).....240       550       760       850
Transport wind..N 14      N 16      N 13      NE 14
Tran wind (m/s).N 6       N 7       N 6       NE 6
Vrate kt-ft/1K..2         4         4         5
Ventrate Cat....POOR      POOR      POOR      POOR

$$
Forecaster...CMA
Requested by...John Townsend
Type of request...PRESCRIBED
.TAG 2505236.0/MEG
.DELDT 03/07/25
.FormatterVersion 2.0.0
.EMAIL john.townsend@usda.gov