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9 July 2008
Day 12

09/07 Day 12

Thunder in paradise

Today would be the start of a downward trend in thunderstorm activity, as pressure began to rise and the air started to dry out at mid levels. Nevertheless, with a light easterly breeze, the west coast sea breeze looked set to penetrate inland once again, which would collide with the east coast breeze later in the afternoon and evening, forcing further storms.

We spend another morning on Coquina Beach west of Bradenton, meeting up with the toe-nibbling fish and diving pelicans, whilst getting in a spot of snorkeling amongst the small surf. After lunch, we made the drive down the I-75 south of Venice, onto Gasparilla Island. This small island is home to a gold medal winner amongst US State Parks, and is reknown for being a little slice of paradise. The Gasparilla Island State Park lived up to its reputation, with pristine natural beaches, sand dunes and all manner of wildlife, including large iguana lizards which strutted their stuff in the baking sunshine.

However, as soon as we arrived at the park, a large thunderstorm was already brewing to our south-east over the mainland as the west coast sea breeze moved inland. The storm grew closer and at an alarming speed, throwing out CG strikes like there was no tomorrow. The storm's anvil hung dangerously overhead, putting out lightning strikes miles away from the storm and in otherwise blue sky. Most sensible people headed off the beach immediately, leaving just storm chasers (ie, us) and a few devoted fishermen. However, with a few lightning bolts in close proximity, even we headed to the car. The storm developed a great gust front, which could be seen sprawling across the bay in front of us. A narrow white line of rain and spray could be seen on the water's surface, and it was heading right for us. We kept the cameras rolling on the tripods until the very last second, when the wall of spray was just metres away. We dived into the boot of the van as it arrived, bringing torrential rain and winds of around 40mph.

Once this storm had set in, we headed back northwards, expecting the sea breeze to generate further storms up the coast. We encountered the next storm very quickly, east of Venice. Frequent lightning strikes, torrential rain and road flooding were witnessed. From here, we headed to the Sunshine Skyway to watch further storms. We expected these to develop as the west coast sea breeze struck earlier storm outflow boundaries head on. We were treated to another munching gust front rolling across Tampa Bay, from a storm which knocked out power back at our villa and gave 6.1mm in just a few minutes. Thereafter, more storms developed over northern Tampa Bay although these were too far away to chase. Instead, we watched the setting sun cast its red rays on the distant thunderclouds, which lit up the entire Bay in hues of orange and pink.

It wasn't a bad day for storms considering it was the start of a drying trend. However, they may be the last we see as the next couple of days are looking even drier. But, who knows?

Total mileage: 181

 

GPS route: Bradenton-Gasparilla-Sunshine Skyway.
Map from Google Earth.

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A pelican and his gull pal discuss the day ahead during the morning sunshine on Coquina Beach.
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Whilst waiting for the swing bridge to close, allowing us entrance onto Gasparilla Island, this large iguana was basking in the sunshine alongside the road. Apparently, they are alien and becoming a nuisance!
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The view from Gasparilla Island State Park, with its famous lighthouse. This large thunderstorm was already developing fast and heading in our direction.
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There can't be many better places for viewing a storm than this. Near-deserted white sands with the bathwater Gulf lapping gently and the sound of growling thunder in the distance.
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We headed around the corner onto the south facing beach to watch the storm moving in.
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CGs were now flickering from the ever-darkening sky.
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A well-defined gust front begins to form, as onlookers remain on the beach.
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As the gust front moved closer, this white stripe appeared on the surface of the lagoon in the distance.
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The white stripe grew nearer with every second. It became clear that it was a mixture of torrential rain and strong winds whipping up the surface of the lagoon. From this position, it reached us in about 45 seconds.
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A radar grab of the storm as it began to move westwards into the Gulf. Our position is shown by the circle car.
Radar from GRLevel3.
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As we made the drive back northwards off Gasparilla Island, this large snake made its way slowly across the road. He was a good 6ft long!
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Approaching the I-75, we ran into another storm which was became very nasty, with frequent lightning, gusty winds and torrential rain, leading to road flooding.
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A radar grab showing the moment we passed through the intense core of the storm.
Radar from GRLevel3.

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We continued northwards though, anticipating a major boundary clash between the west coast sea breeze, already seen here generating storms, and a large boundary moving westwards from storms to the east. This boundary can be seen top middle.
Radar from GRLevel3.
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The boundary clash worked well and generated a photogenic storm. This image is looking east from the southern end of the Sunshine Skyway.
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An impressive gust front formed once again, similar to the Tampa Bay muncher just a few days ago.
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It began to take on the form of a shelf cloud with some impressive striations running along it.
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Just before the outflow winds hit, we headed northwards across the Skyway bridge and into the sunshine, so we could look back at the approaching storm.
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As we crossed the bridge at 60mph, we overtook the shelf cloud which was travelling at around 45mph.
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Parked up on the northern side of the Skyway. The shelf cloud was now completely separated from its parent thunderstorm and began to weaken.
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A new storm was forming over northern Tampa Bay. Ahead of it, light rain allowed this small chunk of rainbow to appear.
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A large tanker navigates its way slowly beneath the Sunshine Skyway.
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This was all that was left of the impressive shelf cloud earlier; a convecting thin line of cloud moving out into the Gulf of Mexico.
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As the sun began to set, the huge thunderstorms over northern Tampa Bay lit up superbly. Mammatus and other features could be seen beneath the sprawling anvil.
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New towers can be seen here, building into the advancing storm over Pinellas County.
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The Skyway begins to light up as darkness falls.
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Bren checking out the new pink and orange landscape.
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One last shot of the fading light, as pink clouds overhead cast a strange light over everything.
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