875
FNUS72 KMLB 301358
FWSMLB
SPOT FORECAST FOR GRASSHOPPER LAKE...FICC
NATIONAL WEATHER SERVICE MELBOURNE FL
858 AM EST TUE DEC 30 2025
FORECAST IS BASED ON FORECAST START TIME OF 0900 EST ON DECEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HIGH PRESSURE ESTABLISHES ITSELF ACROSS THE AREA TODAY, WITH
NORTHWEST WINDS OF 5 TO 10 MPH AND GUSTS TO 15 MPH POSSIBLE NEAR
THE WILDFIRE. NORTHWEST WINDS PERSIST INTO THE OVERNIGHT HOURS
AND WEDNESDAY, WITH WIND SPEEDS FALLING TO AROUND 5 MPH. DRY AIR
SETTLES ACROSS EAST CENTRAL FLORIDA TODAY AND REMAINS IN PLACE
OVER THE NEXT COUPLE OF DAYS, CAUSING MINIMUM RH VALUES TO FALL
BELOW 30% NEAR THE SITE TODAY AND TO AROUND 25% ON WEDNESDAY.
AFTERNOON SMOKE DISPERSION VALUES ARE FORECAST TO REMAIN POOR TO
FAIR BOTH TODAY AND ON WEDNESDAY. RAIN IS NOT ANTICIPATED OVER THE
NEXT COUPLE OF DAYS.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 58.
MIN HUMIDITY........29 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 7 MPH.
MIXING HEIGHT.......2600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 9 TO 15 MPH.
DISPERSION INDEX....AROUND 31.
LVORI...............1.
TIME (EST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........39 40 34 44 54 58 62 54 47
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0
TEMP............44 47 51 54 56 57 57 57 55
RH..............42 38 35 31 31 29 30 30 32
20 FT WIND DIR..N N N N NW NW NW NW NW
20 FT WIND SPD..7 7 6 6 6 6 6 5 5
20 FT WIND GUST.16 15 16 16 15 15 14 14 13
MIX HGT (KFT)...1.7 1.8 1.9 2.0 2.3 2.4 2.5 2.6 2.3
TRANSP WIND DIR.N N N N N N NW NW NW
TRANSP WIND SPD.15 14 12 10 10 10 10 10 9
DISPERSION IDX..34 31 28 27 30 32 32 34 28
LVORI...........1 1 2 2 1 1 1 1 2
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
CLEAR (0-10 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 30.
MAX HUMIDITY........60 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTH 9 TO 14 MPH.
DISPERSION INDEX....10 DECREASING TO 5.
LVORI...............2.
TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........47 26 14 3 3 5
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............51 46 42 39 37 33
RH..............40 44 47 48 50 55
20 FT WIND......NW 3 NW 2 NW 3 NW 3 NW 3 NW 3
20 FT WIND GUST.12 12 13 14 13 12
MIX HGT (FT)....800 800 800 800 800 500
TRANSPORT WIND..NW 9 NW 12 N 13 N 14 N 13 N 10
DISPERSION IDX..10 5 6 6 6 5
LVORI...........2 2 2 2 2 2
WEDNESDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 58.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 6 MPH IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......2500 FT AGL INCREASING TO 3000 FT AGL LATE IN
THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 9 TO 12 MPH.
DISPERSION INDEX....4 INCREASING TO 41.
LVORI...............3 DECREASING TO 1.
TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........3 3 1 2 3 4
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............32 33 45 52 56 58
RH..............58 59 37 29 26 25
20 FT WIND......NW 2 NW 3 NW 5 NW 6 NW 6 W 5
20 FT WIND GUST.12 12 13 14 14 13
MIX HGT (FT)....700 1100 1500 2100 2800 2900
TRANSPORT WIND..N 9 NW 9 NW 10 NW 12 NW 12 W 10
DISPERSION IDX..4 13 20 32 41 37
LVORI...........3 2 2 1 1 1
FORECASTER...TOLLEFSEN
REQUESTED BY...MICAYLA ACREE
TYPE OF REQUEST...WILDFIRE
.TAG 2528140.0/MLB
.DELDT 12/30/25
.FORMATTERVERSION 2.0.0
.EMAIL FLFIC@FIRENET.GOV
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