TODAY: First off and foremost, very difficult forecast for today. Almost tempted to write off rain chances today altogether, but things could come together by late this afternoon for showers and storms to form by 5-6pm so going ahead with a worst/best case scenario (depending on one's preference for rain and thunder). It will take a while though.
As shown in the above image, storm complexes over SE Georgia and North Florida sent out huge outflow boundaries (OFBs) which raced South through West this morning and completely scoured out the atmosphere over the peninsula. Clouds have cleared nicely now though, but as can be seen by looking out side, clouds are pretty scarce behind these boundaries in the more stable air. High pressure has set up residence temporarily in the wake of this boundaries which are now in far South Florida where some showers have formed over the Keys area. Also, within the wake of the OFB(s) was NE winds. These winds, within the overall circulation, have drawn in haze and a 'smokey smell' to the coast in Canaveral even with an easterly wind at noon time. Haze is once again present as a result as well. This smoke/haze is coming from fires in SE Georgia, one of which can be seen in the last image in this post.
FORECAST: Believe that thunderstorms can still form today, but they will be late in coming. First storms should (and already have) appear in the Panhandle. Afternoon temperatures will not be nearly as warm as the past two days, with highs mainly in the mid-80Fs at the coast and low 90Fs inland except perhaps along SW Florida where some mid/upper 90Fs will occur. The high pressure shown above should strengthen even more through early afternoon but begin to drop a bit south and west late today. The east coast sea breeze might be hard to discern...considering there is already an easterly gradient wind component in place, but when it does form it will come from the southeast to SSE around mid - afternoon. That sea-breeze boundary should meet up with the Gulf/West Coast Sea-breeze near the Gainesville to Ocala line. Storm motions will work to Ormond and maybe even Daytona but then begin to work more southward to SSW with time.
Strongest storms today should occur along the I-4 corridor and west of I-95 after 6pm, and work into the Orlando area. Lake County could also receive a good storm or two...but with time storm motions and propagation along the east coast sea breeze should stack up the precipitation along the Southwest side of the state. Storms/rain could last until 11pm...under the assumption they can form at all of course.
FRIDAY/SUNDAY: Overall, not a lot of change in the pattern. A surface to mid-level ridge Atlantic Ridge axis will set camp either directly over Central Florida or South Central Florida. Late afternoon to evening thunderstorms will be possible closer to the East Coast, especially from near Mims and North to JAX. So far, it appears storms could clear the east coast for almost all of Brevard during the late afternoon on Friday. Storms most any day could be exceptionally strong due to wind gusts and/or hail size in isolated/random fashion, especially on Friday.