599
FNUS72 KTBW 301328
FWSTBW

Spot Forecast for LGS_17...CELM
National Weather Service Tampa Bay Ruskin FL
928 AM EDT Wed Sep 30 2026

Forecast is based on ignition time of 0900 EDT on September 30.
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...

.REST OF TODAY...
Continuing moisture recovery across the area will support limited
fire weather concerns today despite a lingering Low SFP through
this afternoon. Winds and RH are not expected to approach critical
thresholds, with generally good dispersions this afternoon along
with isolated to scattered showers possible through the evening.


Sky/weather.........Partly sunny (55-65 percent). Isolated showers
                    early in the afternoon. Isolated thunderstorms
                    late in the afternoon. Scattered showers late
                    in the afternoon.
Chance of pcpn......30 percent.
Max temperature.....Around 88.
Min humidity........59 percent.
Wind (20 ft)........Light winds becoming southeast 5 to 6 mph in
                    the late morning and afternoon. Gusty and
                    erratic winds expected near thunderstorms late
                    in the afternoon.
Mixing height.......4600 ft AGL.
Transport winds.....Southeast 5 to 9 mph.
Dispersion index....14 increasing to 29 late in the morning, then
                    increasing to 40 late in the afternoon
                    decreasing to 30 late in the afternoon.
LVORI...............4.

TIME (EDT)      9 AM   11 AM  1 PM   3 PM   5 PM
Sky (%).........46     49     61     66     69
Weather cov.....                     ISOLTD SCTTRD
Weather type....NONE   NONE   NONE   RNSHWR RNSHWR
Tstm cov........                     ISOLTD ISOLTD
Chc of pcpn (%).0      0      10     20     30
Temp............74     81     85     88     85
RH..............92     75     64     59     63
20 ft wind......SE 3   SE 6   SE 6   SE 6   SE 5
20 ft wind gust.6      10     12     12     9
Mix hgt (ft)....700    2600   4200   4600   3600
Transport wind..SE 5   SE 8   SE 9   SE 7   SE 7
Dispersion idx..10     25     40     42     30
LVORI...........7      3      2      1      2

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    partly cloudy (40-50 percent) then becoming
                    mostly cloudy (50-60 percent) then becoming
                    partly cloudy (40-50 percent). Scattered
                    showers early in the evening. Isolated
                    thunderstorms in the evening. Isolated showers
                    late in the evening.
Chance of pcpn......40 percent.
Min temperature.....Around 72.
Max humidity........98 percent.
Wind (20 ft)........East winds around 5 mph. Gusty and erratic
                    winds expected near thunderstorms in the
                    evening.
Mixing height.......400 ft AGL.
Transport winds.....East 6 to 8 mph.
Dispersion index....21 decreasing to 7.
LVORI...............5.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........76     81     65     58     44     56
Weather cov.....SCTTRD SCTTRD ISOLTD
Weather type....RNSHWR RNSHWR RNSHWR NONE   NONE   NONE
Tstm cov........ISOLTD ISOLTD ISOLTD
Chc of pcpn (%).30     40     20     0      0      0
Temp............83     78     75     74     73     72
RH..............68     82     88     92     95     96
20 ft wind......SE 5   SE 5   SE 5   E 5    E 5    E 5
20 ft wind gust.9      8      8      9      8      8
Mix hgt (ft)....2100   600    500    500    400    400
Transport wind..E 7    SE 6   SE 8   E 7    E 7    E 7
Dispersion idx..21     4      3      5      5      5
LVORI...........3      4      6      6      6      7

.THURSDAY...

Sky/weather.........Mostly sunny (45-55 percent). Isolated showers
                    early in the afternoon. Isolated thunderstorms
                    late in the afternoon. Scattered showers late
                    in the afternoon.
Chance of pcpn......50 percent.
Max temperature.....Around 89.
Min humidity........63 percent.
Wind (20 ft)........East winds 6 to 12 mph. Gusty and erratic winds
                    expected near thunderstorms late in the
                    afternoon.
Mixing height.......4500 ft AGL.
Transport winds.....East 7 to 14 mph.
Dispersion index....7 increasing to 17 late in the morning, then
                    increasing to 27 late in the morning increasing
                    to 41 late in the morning increasing to 52
                    decreasing to 39 late in the afternoon.
LVORI...............5.

TIME (EDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........42     34     36     46     46     56
Weather cov.....                            ISOLTD SCTTRD
Weather type....NONE   NONE   NONE   NONE   RNSHWR RNSHWR
Tstm cov........                            ISOLTD ISOLTD
Chc of pcpn (%).0      0      0      0      20     40
Temp............72     72     80     86     88     86
RH..............97     98     83     68     63     68
20 ft wind......E 6    E 6    E 8    E 10   E 12   E 10
20 ft wind gust.9      12     14     18     20     18
Mix hgt (ft)....400    500    2000   3300   4500   3700
Transport wind..E 7    E 8    E 12   E 13   SE 14  SE 12
Dispersion idx..5      8      27     45     53     43
LVORI...........7      8      4      1      1      1

$$
Forecaster...Hurt
Requested by...Samuel Kane
Type of request...PRESCRIBED
.TAG 2622830.0/TBW
.DELDT 09/30/26
.FormatterVersion 2.0.0
.EMAIL kanes@hillsboroughcounty.org