948
FNUS72 KTBW 211229
FWSTBW
SPOT FORECAST FOR CHASS 4B...FLORIDA FISH AND WILDLIFE
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
829 AM EDT WED OCT 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON OCTOBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE AT (813) 645-2323 IF YOU HAVE QUESTIONS OR
CONCERNS WITH THIS FORECAST.
DISCUSSION
HIGH PRESSURE WILL DOMINATE WITH FAIR DRY WEATHER CONTINUING.
RELATIVE HUMIDITY VALUES WILL REMAIN ABOVE CRITICAL LEVELS WITH
SUSTAINED 20 FOOT WINDS LESS THAN 15 MPH. DISPERSION INDICES WILL
BE RATHER HIGH THIS AFTERNOON.
REST OF TODAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........49 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 6 TO 9 MPH.
MIXING HEIGHT.......5800 FT AGL.
TRANSPORT WINDS.....NORTHEAST 13 TO 15 MPH.
DISPERSION INDEX....15 INCREASING TO 77.
LVORI...............3.
TIME (EDT) 9 AM 11 AM 1 PM 3 PM 5 PM
SKY (%).........0 5 5 15 10
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0
TEMP............62 72 78 81 80
RH..............75 63 55 51 50
20 FT WIND......N 6 NE 7 NE 8 NE 9 NE 8
20 FT WIND GUST.13 14 15 16 15
MIX HGT (FT)....600 1600 4500 5800 4900
TRANSPORT WIND..N 13 NE 14 NE 15 NE 14 NE 14
DISPERSION IDX..15 28 59 77 68
LVORI...........4 2 1 1 1
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........84 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 7 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTHEAST 10 TO 13 MPH.
DISPERSION INDEX....49 DECREASING TO 4.
LVORI...............3.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........10 10 5 0 0 0
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............78 71 66 63 60 57
RH..............54 65 72 78 82 84
20 FT WIND......NE 7 NE 7 NE 7 NE 6 NE 5 NE 5
20 FT WIND GUST.15 15 15 14 12 12
MIX HGT (FT)....2400 600 400 400 400 400
TRANSPORT WIND..N 12 NE 12 NE 13 NE 12 NE 10 NE 10
DISPERSION IDX..49 6 5 5 5 4
LVORI...........1 3 3 4 4 5
THURSDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........41 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 7 MPH.
MIXING HEIGHT.......4900 FT AGL.
TRANSPORT WINDS.....NORTHEAST 9 TO 12 MPH.
DISPERSION INDEX....7 INCREASING TO 61 IN THE AFTERNOON.
LVORI...............3.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........0 0 5 5 10 15
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............56 56 67 74 77 77
RH..............84 83 64 49 43 41
20 FT WIND......NE 5 N 5 NE 5 NE 7 N 7 N 7
20 FT WIND GUST.12 12 10 14 13 14
MIX HGT (FT)....400 400 1500 3300 4300 4900
TRANSPORT WIND..NE 9 NE 9 NE 12 NE 12 NE 10 NE 10
DISPERSION IDX..4 10 30 46 51 61
LVORI...........5 4 1 1 1 1
FORECASTER...CLOSE
REQUESTED BY...JOHN MCMULLEN
TYPE OF REQUEST...PRESCRIBED
.TAG 2624228.0/TBW
.DELDT 10/21/26
.FORMATTERVERSION 2.0.0
.EMAIL JOHN.MCMULLEN@MYFWC.COM
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