343
FNUS74 KBMX 131920
FWSBMX
SPOT FORECAST FOR TRAMMEL A RX...USFS
NATIONAL WEATHER SERVICE BIRMINGHAM AL
220 PM CDT WED MAY 13 2026
FORECAST IS BASED ON IGNITION TIME OF 1500 CDT ON MAY 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
MAIN CHANGE IN CONDITIONS THROUGH THE NEXT 24 HOURS AT THE BURN SITE
WILL BE LOWER RH VALUES ON THURSDAY, WHICH ARE LIKELY TO DROP BELOW
35 PERCENT. OTHERWISE, NO BIG WIND SHIFTS EXPECTED, WITH 20 FT AND
TRANSPORT LEVEL WINDS GENERALLY OUT OF THE NORTH TO NORTHWEST. RAIN
FREE CONDITIONS CONTINUE, WITH JUST A FEW CLOUDS AT MOST.
REST OF TODAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........45 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST AROUND 5 MPH
LATE IN THE AFTERNOON, THEN BECOMING LIGHT LATE
IN THE AFTERNOON.
MIXING HEIGHT.......6100 FT AGL.
TRANSPORT WINDS.....NORTHWEST 9 TO 10 MPH.
DISPERSION INDEX....64 INCREASING TO 76 LATE IN THE AFTERNOON.
LVORI...............1.
TIME (CDT) 3 PM 5 PM
SKY (%).........11 10
WEATHER COV.....
WEATHER TYPE....NONE NONE
TSTM COV........
CWR.............0 0
TEMP............79 80
RH..............47 45
20 FT WIND......NW 3 NW 3
20 FT WIND GUST.10 10
20 FT WIND DIR..310 310
MIX HGT (FT)....5600 5800
TRANSPORT WIND..NW 9 NW 10
DISPERSION IDX..64 74
LVORI...........1 1
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 54.
MAX HUMIDITY........81 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 8 TO 12 MPH SHIFTING TO THE NORTH 9
TO 10 MPH AFTER 3 AM.
DISPERSION INDEX....49 DECREASING TO 5.
LVORI...............3.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........8 9 14 16 8 4
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0 0
TEMP............78 71 65 63 60 56
RH..............50 68 81 81 78 77
20 FT WIND......NW 2 W 1 NW 1 NW 2 N 2 N 2
20 FT WIND GUST.7 6 7 10 10 10
20 FT WIND DIR..310 290 300 320 350 350
MIX HGT (FT)....4200 500 400 500 400 500
TRANSPORT WIND..NW 9 NW 8 NW 8 N 9 N 10 N 9
DISPERSION IDX..49 4 4 4 5 4
LVORI...........1 3 4 4 4 4
THURSDAY
SKY/WEATHER.........SUNNY (0-5 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........33 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 7 MPH EARLY IN
THE MORNING.
MIXING HEIGHT.......5100 FT AGL.
TRANSPORT WINDS.....NORTH 9 TO 16 MPH.
DISPERSION INDEX....6 INCREASING TO 81.
LVORI...............3.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........3 2 1 2 1 2
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0 0
TEMP............55 58 66 70 73 73
RH..............77 72 52 41 34 34
20 FT WIND......N 2 N 5 N 6 N 7 N 6 N 6
20 FT WIND GUST.10 12 12 12 11 11
20 FT WIND DIR..000 010 000 350 340 340
MIX HGT (FT)....500 1600 3500 4100 4900 4900
TRANSPORT WIND..N 9 N 14 N 16 N 15 N 15 N 14
DISPERSION IDX..4 6 7 74 84 78
LVORI...........4 3 1 1 1 1
FORECASTER...WESTLAND
REQUESTED BY...MICHAEL LARSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2613478.1/BMX
.DELDT 05/13/26
.FORMATTERVERSION 2.0.0
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page