248
FNUS72 KMLB 190838
FWSMLB
SPOT FORECAST FOR SFWMD - LRUS - 10,11...SOUTH FLORIDA WATER MANAGEMENT DISTRICT
NATIONAL WEATHER SERVICE MELBOURNE FL
438 AM EDT TUE AUG 19 2025
FORECAST IS BASED ON IGNITION TIME OF 0600 EDT ON AUGUST 19.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
NORTH TO NORTHEAST SURFACE AND TRANSPORT WINDS WILL
PRODUCE VERY GOOD DISPERSION THIS AFTERNOON. SCATTERED AFTERNOON
SHOWERS AND STORMS MAINLY AFTER 2 PM.
TODAY
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
CHANCE OF PCPN......50 PERCENT.
MAX TEMPERATURE.....AROUND 93.
MIN HUMIDITY........58 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST 5 TO 10 MPH.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 4500 FT AGL.
TRANSPORT WINDS.....NORTHEAST 7 TO 13 MPH.
DISPERSION INDEX....4 INCREASING TO 57.
LVORI...............7 DECREASING TO 1.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........13 12 12 10 9 10 21 32 28 30 40 33
WEATHER COV..... SCH SCH CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH SCH SCH SCH
CHC OF PCPN (%).0 0 10 0 10 10 20 20 40 50 50 40
TEMP............77 76 78 83 85 87 89 90 90 91 89 90
RH..............94 97 94 80 75 70 64 62 60 58 61 60
20 FT WIND DIR..N N NE NE NE NE NE NE NE NE NE NE
20 FT WIND SPD..3 5 6 6 7 8 8 8 9 10 10 10
20 FT WIND GUST.7 7 8 10 12 13 14 15 13 15 15 15
MIX HGT (KFT)...0.4 0.4 0.6 1.5 2.4 3.4 3.9 4.2 4.4 4.5 3.5 3.8
TRANSP WIND DIR.NE NE NE NE NE NE NE N N NE NE NE
TRANSP WIND SPD.7 7 8 9 9 10 12 10 10 12 12 13
DISPERSION IDX..3 3 5 18 29 42 46 49 57 59 55 57
LVORI...........7 7 6 3 3 3 1 1 1 1 1 1
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING CLEAR.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
EARLY IN THE EVENING.
CHANCE OF PCPN......30 PERCENT.
MIN TEMPERATURE.....AROUND 75.
MAX HUMIDITY........97 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH SHIFTING TO THE
NORTHWEST 5 TO 6 MPH OVERNIGHT. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY
IN THE EVENING.
MIXING HEIGHT.......1800 FT AGL DECREASING TO 400 FT AGL EARLY IN
THE EVENING.
TRANSPORT WINDS.....NORTH 8 TO 14 MPH.
DISPERSION INDEX....52 DECREASING TO 5.
LVORI...............1 INCREASING TO 6.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........30 21 5 1 2 2
WEATHER COV.....CHANCE
WEATHER TYPE....RNSHWR NONE NONE NONE NONE NONE
TSTM COV........S CHC
CHC OF PCPN (%).30 10 10 0 0 0
TEMP............88 83 79 79 77 76
RH..............63 74 85 88 90 94
20 FT WIND......NE 10 NE 7 NE 6 N 6 N 5 NW 6
20 FT WIND GUST.15 14 10 9 8 9
MIX HGT (FT)....3200 1000 700 400 400 400
TRANSPORT WIND..NE 14 NE 12 N 10 N 8 N 9 N 9
DISPERSION IDX..52 6 5 4 4 5
LVORI...........1 3 5 6 6 6
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE AFTERNOON.
CHANCE OF PCPN......40 PERCENT.
MAX TEMPERATURE.....AROUND 94.
MIN HUMIDITY........56 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 9 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
MIXING HEIGHT.......1800 FT AGL INCREASING TO 5500 FT AGL.
TRANSPORT WINDS.....NORTH 8 TO 14 MPH.
DISPERSION INDEX....5 INCREASING TO 18 EARLY IN THE MORNING, THEN
INCREASING TO 34 LATE IN THE MORNING INCREASING
TO 48 LATE IN THE MORNING INCREASING TO 66
INCREASING TO 71 EARLY IN THE AFTERNOON
DECREASING TO 56 DECREASING TO 43 LATE IN THE
AFTERNOON.
LVORI...............7 DECREASING TO 1.
TIME (EDT) 6 AM 9 AM NOON 3 PM
SKY (%).........2 7 13 20
WEATHER COV..... CHANCE
WEATHER TYPE....NONE NONE NONE RNSHWR
TSTM COV........ CHANCE
CHC OF PCPN (%).0 10 10 40
TEMP............76 82 90 91
RH..............94 82 60 56
20 FT WIND......NW 6G10 N 8G13 NW 9G15 NW 9G16
MIX HGT (FT)....400 1800 4300 5100
TRANSPORT WIND..N 8 N 13 N 14 N 10
DISPERSION IDX..5 34 65 60
LVORI...........6 3 1 1
FORECASTER...KELLY
REQUESTED BY...DAVID SCHUTT
TYPE OF REQUEST...PRESCRIBED
.TAG 2520168.0/MLB
.DELDT 08/19/25
.FORMATTERVERSION 2.0.0
.EMAIL DSCHUTT@SFWMD.GOV
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