129  
FNUS72 KTBW 201254  
FWSTBW  
 
SPOT FORECAST FOR LGSP MU 46...HILLSBOROUGH COUNTY BOCC  
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL  
754 AM EST FRI DEC 20 2024  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 EST ON DECEMBER 20.  
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
 
 
DRIER AND COOLER AIR WILL MOVE INTO THE AREA TODAY AND TONIGHT  
BEHIND A COLD FRONT. A SECONDARY COLD FRONT WILL MOVE THROUGH  
TONIGHT WITH COOLER AND EVEN DRIER AIR FILTERING IN OVER THE  
WEEKEND. THIS MAY ALLOW MINIMUM RH VALUES TO APPROACH CRITICAL  
LEVELS ON SATURDAY, BUT WIND SPEEDS WILL BE LOW ENOUGH TO PREVENT  
A HIGHER FIRE DANGER CONCERN.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 73.  
MIN HUMIDITY........59 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 7 TO 12 MPH.  
MIXING HEIGHT.......3500 FT AGL.  
TRANSPORT WINDS.....WEST 13 TO 21 MPH.  
DISPERSION INDEX....28 INCREASING TO 42 LATE IN THE MORNING, THEN  
INCREASING TO 57 EARLY IN THE AFTERNOON  
INCREASING TO 70 EARLY IN THE AFTERNOON  
DECREASING TO 61 DECREASING TO 43 LATE IN THE  
AFTERNOON.  
LVORI...............3.  
 
TIME (EST) 10 AM NOON 2 PM 4 PM  
SKY (%).........8 10 10 9  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0  
LAL.............1 1 1 1  
TEMP............66 71 71 68  
RH..............80 68 64 59  
20 FT WIND......NW 7 NW 10 W 12 NW 12  
20 FT WIND GUST.12 17 18 20  
MIX HGT (FT)....1800 3400 3300 2800  
TRANSPORT WIND..NW 13 W 17 W 20 W 20  
DISPERSION IDX..28 57 72 61  
LVORI...........4 2 1 1  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (0-10 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....AROUND 43.  
MAX HUMIDITY........86 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 6 TO 8 MPH.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 12 TO 14 MPH SHIFTING TO THE NORTH  
OVERNIGHT.  
DISPERSION INDEX....22 DECREASING TO 5.  
LVORI...............4.  
 
TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........2 1 1 2 3 11  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0  
LAL.............1 1 1 1 1 1  
TEMP............60 55 53 51 49 46  
RH..............69 80 85 85 81 79  
20 FT WIND......NW 8 NW 6 NW 6 NW 6 N 6 N 6  
20 FT WIND GUST.15 12 10 9 10 12  
MIX HGT (FT)....500 400 400 400 400 500  
TRANSPORT WIND..W 14 NW 12 NW 12 N 12 N 13 N 13  
DISPERSION IDX..22 1 5 5 5 6  
LVORI...........2 5 5 5 4 4  
   
SATURDAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 61.  
MIN HUMIDITY........42 PERCENT.  
WIND (20 FT)........NORTH WINDS 6 TO 8 MPH.  
MIXING HEIGHT.......2900 FT AGL.  
TRANSPORT WINDS.....NORTH 8 TO 15 MPH.  
DISPERSION INDEX....15 INCREASING TO 26 IN THE LATE MORNING AND  
EARLY AFTERNOON, THEN INCREASING TO 33 LATE IN  
THE AFTERNOON DECREASING TO 24 LATE IN THE  
AFTERNOON.  
LVORI...............3.  
 
TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........14 8 13 18 26 30  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0  
LAL.............1 1 1 1 1 1  
TEMP............44 44 51 57 60 59  
RH..............80 78 60 49 43 42  
20 FT WIND......N 6 N 7 N 8 N 7 N 6 N 6  
20 FT WIND GUST.12 12 14 12 12 10  
MIX HGT (FT)....400 800 1700 2400 2800 2900  
TRANSPORT WIND..N 15 N 14 N 12 N 9 N 8 N 9  
DISPERSION IDX..11 18 25 28 32 33  
LVORI...........4 4 2 2 1 1  
 

 
FORECASTER...ADAVIS  
REQUESTED BY...NORMAN JONES  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2428823.0/TBW  
.DELDT 12/20/24  
.FORMATTERVERSION 2.0.0  
.EMAIL JONESNO@HCFL.GOV  
 
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