Marine Weather and Tide Forecast for Holly Hill, FL

UPDATE
Issued at 1255 PM EDT Thu Oct 8 2026

Have issued a Flood Watch for the entire east central Florida area through this afternoon and evening. A weak front lingers across the state, with a very moist airmass across the area. This morning's sounding at the Cape had a PW value of 2.4", which is a record for the day based off of the SPC sounding climatology.
Differential heating between increased cloud cover to the north of the front and more daytime heating south of Orlando, will help increase instability. This combined with the deep moisture in place will lead to numerous showers and storms that will continue to develop through the afternoon. Quick rainfall accumulations of 2-4" will occur with slow moving heavier showers and storms or repeated rounds of rainfall. HRRR and REFS guidance also indicate some localized totals of 5-7" will be possible. This may lead to flash flooding in some spots, especially across those areas where heavy rainfall has already occurred recently. WPC recently upgraded much of the area to a Slight Risk (Level 2 of 5) for excessive rainfall.

DISCUSSION
Issued at 233 AM EDT Thu Oct 8 2026

Today-Tonight...Stratiform showers continue to traverse the area prior to sunrise, maintaining soggy conditions overnight. A quick break looks possible towards sunrise. However, expect another day of high coverage of showers with scattered embedded storms, with a stationary boundary draped across the county warning area.

Rinse and repeat today, as deep moisture remains present over the Florida peninsula. Near record PWATs approaching 2.5" will continue to support PoPs near 90% across the entire area. Multiple rounds of showers and storms are once again expected, with the front stalled near the Treasure Coast. Widespread, quick rainfall totals of 2-4" are forecast, especially in deeper convection.
CAMs suggest the greatest chance for a few storms (and likely the highest totals) will be across southern portions of the area this afternoon and into this evening. This will, of course, exacerbate any ongoing flooding concerns from the recent rains. All of east central Florida is once again in a Marginal Risk (1/4) for excessive rainfall. Showers and storms look to move offshore in the evening hours, though scattered showers will remain possible north of I-4 overnight.

Northeasterly winds are forecast today north of the stalled front.
Winds generally remain under 10 mph or less through tonight, though will need to monitor for an increase in winds along the Volusia County coast later this afternoon and into tonight, as the front begins to lift northward. Onshore flow along the Volusia Coast is expected to produce a High Risk of rip currents and rough surf at those beaches today. Entering the water in this area is strongly discouraged. Dense cloud cover and high precipitation coverage once again keeps highs in the lower 80s north of Melbourne today. However, breaks in the clouds should allow for areas to the south to reach the mid to upper 80s. Muggy conditions will produce peak heat indices in the upper 90s to lower 100s along the Treasure Coast.

Friday-Sunday...Ridging over the western Atlantic prevents Hurricane Isaias from reaching the Florida peninsula, while an upper level trough lifts the storm into the northern Gulf Coast late Friday into early Saturday. As the hurricane lifts northward, it finally nudges our stationary front northward, though it remains over the Southeast US through the weekend. Locally, onshore flow on Friday veers southerly for the weekend and becomes breezy as the pressure gradient tightens. The breeziest conditions are forecast Saturday, with gusts 20-25 mph. PWATs diminish slightly (nearer to 2") on Friday as the front lifts northward, but increasingly southerly flow will once again advect deep tropical moisture into the area for the weekend. Thus, little change to the overall message of the forecast, with high PoPs 60-80% continuing late week and through Sunday. However, will see increasing breaks in between showers and storms Friday, but especially on Sunday, as drier air begins to move into the area from the south later in the day. Rainfall totals Friday and Sunday are expected to be closer to 1-1.5" or less, though deeper convection Saturday once again leads to the possibility of widespread totals 1-3". Therefore, could see minor flooding concerns persist in areas that have received heavy rainfall over the last several days. The highest totals on Friday will likely be north of I-4, closer to the front as it lifts northward. That area remains in a Marginal Risk for excessive rainfall to end the week.

Increasing southerly flow advects warmer air into the forecast area, with high temperatures reaching the upper 80s to lower 90s by the weekend. More efficient daytime heating and additional breaks in the cloud cover will increase the chance for afternoon thunderstorms compared to the last several days. A few storms could be strong, producing wind gusts near 45 mph. Overnight lows look to remain in the mid to upper 70s.

Monday-Thursday...The trough containing the remnants of Isaias moves off of the Northeast US coast early next week. Meanwhile, high pressure strengthens and stacks vertically over the northern Gulf Coast, moving eastward through the period. Locally, the weak front associated with the trough will drag southward through the peninsula on Monday. PWATs near 2" will continue to support scattered showers and storms (PoPs 20-30%) along the boundary. However, northerly winds behind the front will advect much drier air into the local area. PWATs fall below 1.5" (below 1" Tuesday), reducing PoPs to 20% or less Tuesday and Wednesday. Northerly flow prevails through mid- week, as the ridge moves eastward, veering onshore late in the period. High temperatures overall remain in the upper 80s to near 90. However, much less humid conditions Tuesday and Wednesday will limit heat indices to the lower to mid-90s. Overnight lows also dip into the 60s.

MARINE
Issued at 233 AM EDT Thu Oct 8 2026

The stationary boundary remains stalled near the Treasure Coast today, before distant Hurricane Isaias over the Gulf drags it northward Friday and into the weekend. Periods of poor boating conditions, mainly north of the Cape, begin late today and into tonight. Northeasterly winds increase to 15-20 knots off of the Volusia County coast as the front lifts northward and may need Small Craft Advisories for Friday, if winds increase to 20-25 kts.
Otherwise, boating conditions deteriorate this weekend, as the pressure gradient tightens. Southerly winds 15-25 kts are forecast across all of the local waters Saturday, before remaining around 15 kts Sunday. Seas generally 4-5 ft, though waves up to 6-7 ft will be possible north of the Cape, especially in the Gulf Stream Friday and Saturday. Regardless, high coverage of showers and storms will continue through the weekend. High pressure will improve boating conditions and lead to lower rain chances next week.

AVIATION
(18Z TAFs)
Issued at 125 PM EDT Thu Oct 8 2026

A weak frontal boundary will continue to meander across central FL over the next 24 hours. Very high moisture values in association will provide for elevated heavy shower and storm chances. Threats to aviation include lightning, locally gusty winds, and torrential downpours. Lightning storm probabilities continue to increase thru the afternoon and early evening esp from MCO/MLB and points southward to the Treasure Coast terminals. In addition, CIGs continue to fluctuate, at times as low as IFR.
Still anticipate a general VFR/MVFR trend outside of convection.
E/NE winds increase this evening at DAB/LEE, with a few gusts to around 20 kt or so. Trending quieter after 03-05Z tonight, but CIGs will continue to need monitoring.

For Fri, perhaps a bit lower coverage (SCT-NMRS) with greatest threat I-4 northward as front lifts northward. Winds veer more ESE/SE across ECFL with speeds 8-12 kts. CIGs VFR/MVFR, local IFR invof convection, with lowest CIGs again near I-4 northward.

PRELIMINARY POINT TEMPS/POPS
DAB 72 86 76 88 / 80 80 60 80 MCO 73 89 75 90 / 70 70 40 80 MLB 73 88 77 88 / 80 40 50 80 VRB 72 89 76 89 / 80 30 50 80 LEE 70 87 74 89 / 70 70 40 80 SFB 72 88 75 89 / 80 80 30 80 ORL 73 88 76 89 / 70 70 40 80 FPR 72 89 75 89 / 70 30 50 80

MLB WATCHES/WARNINGS/ADVISORIES
FL...Flood Watch until 11 PM EDT this evening for FLZ041-044>046-053- 058-141-144-154-159-164-247-254-259-264-347-447-547-647-747.

AM...None.