400
FNUS72 KTBW 171226
FWSTBW
SPOT FORECAST FOR LGS UNIT 14...HILLSBOROUGH COUNTY CELM
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
726 AM EST WED DEC 17 2025
FORECAST IS BASED ON IGNITION TIME OF 0800 EST ON DECEMBER 17.
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 CONTINUES TO DOMINATE THE AREA TODAY. WE WILL START OUT
ON THE COOLER SIDE BUT QUICKLY WARM INTO THE MID 70'S THIS AFTERNOON.
WINDS WILL REMAIN OUT OF THE EAST AND NORTHEAST AROUND 5 TO 15 MPH. THE
ONLY CONCERN WILL BE LOW DISPERSION UNTIL AROUND NOON WHEN IT START TO
GET INTO THE MID 40'S.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........60 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 7 MPH.
MIXING HEIGHT.......4800 FT AGL.
TRANSPORT WINDS.....EAST 7 TO 13 MPH.
DISPERSION INDEX....13 INCREASING TO 30 LATE IN THE MORNING, THEN
INCREASING TO 47 EARLY IN THE AFTERNOON
INCREASING TO 61 EARLY IN THE AFTERNOON
DECREASING TO 53 DECREASING TO 39 LATE IN THE
AFTERNOON.
LVORI...............4.
TIME (EST) 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........59 39 45 55 65
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0
TEMP............56 67 75 76 76
RH..............99 82 66 61 63
20 FT WIND......NE 5 E 6 E 7 E 7 E 7
20 FT WIND GUST.7 9 13 13 12
MIX HGT (FT)....300 1100 3500 4800 3500
TRANSPORT WIND..E 7 E 10 E 13 E 12 E 13
DISPERSION IDX..9 16 47 63 53
LVORI...........6 4 2 1 1
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 59.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 6 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....EAST 9 TO 13 MPH.
DISPERSION INDEX....21 DECREASING TO 6.
LVORI...............6.
TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........73 69 62 36 50 56
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............72 66 63 61 59 60
RH..............70 83 90 96 100 97
20 FT WIND......E 6 E 6 E 6 E 5 E 5 E 5
20 FT WIND GUST.12 9 9 8 7 8
MIX HGT (FT)....500 500 400 400 400 400
TRANSPORT WIND..E 10 E 13 E 12 E 9 E 9 E 10
DISPERSION IDX..21 4 8 5 4 7
LVORI...........3 5 5 7 9 8
THURSDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). CHANCE OF SHOWERS
IN THE AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON.
CHANCE OF PCPN......40 PERCENT.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........66 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 9 MPH SHIFTING TO THE
SOUTH 7 TO 9 MPH LATE IN THE AFTERNOON. GUSTY
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
LATE IN THE AFTERNOON.
MIXING HEIGHT.......3400 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 10 TO 17 MPH.
DISPERSION INDEX....12 INCREASING TO 28 LATE IN THE MORNING, THEN
INCREASING TO 42 LATE IN THE MORNING INCREASING
TO 55 EARLY IN THE AFTERNOON DECREASING TO 42
DECREASING TO 30 LATE IN THE AFTERNOON.
LVORI...............4.
TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........50 48 53 60 63 61
WEATHER COV..... CHANCE CHANCE
WEATHER TYPE....NONE NONE NONE NONE RNSHWR RNSHWR
TSTM COV........ S CHC
CHC OF PCPN (%).10 10 10 10 40 40
TEMP............60 63 72 78 81 81
RH..............98 98 82 72 67 67
20 FT WIND......E 5 E 6 SE 7 SE 9 S 9 S 8
20 FT WIND GUST.7 9 12 14 14 13
MIX HGT (FT)....400 500 1400 2900 3100 2400
TRANSPORT WIND..SE 10 SE 12 SE 17 S 17 S 16 S 14
DISPERSION IDX..8 16 32 52 57 42
LVORI...........7 6 4 2 1 2
FORECASTER...SHIVELEY
REQUESTED BY...REBECCA WINCH
TYPE OF REQUEST...PRESCRIBED
.TAG 2527866.0/TBW
.DELDT 12/17/25
.FORMATTERVERSION 2.0.0
.EMAIL WINCHR@HCFL.GOV
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