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Home Local news Understanding Straight-Line Winds and Their Role in the Crane Collapse on Merritt Island
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Understanding Straight-Line Winds and Their Role in the Crane Collapse on Merritt Island

    What are straight-line winds? How could they have helped topple a crane in Merritt Island?
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    Published on 05 June 2025
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    BREVARD COUNTY, Fla. – On Wednesday afternoon, two construction workers tragically lost their lives amid severe weather conditions in Brevard County. Strong winds from thunderstorms to the south might have contributed to the crane toppling over.

    A crane collapsed at a construction site in Brevard County, killing two people. (Copyright 2025 by WKMG ClickOrlando – All rights reserved.)

    The highest recorded wind speed at the incident’s time was 58 mph, meeting the National Weather Service’s severe thunderstorm criteria.

    The warning was not issued, and perhaps this is a repercussion of the recent and hefty cuts they’ve experienced throughout the agency as a whole.

    Currently, there is no clear information on whether an investigation is underway to determine the cause of the collapse. However, it’s clear that being outside during severe weather significantly increases the risk of accidents.

    Yesterday, Central Florida was forecast to see a lot of heavy rain, with limited significant thunderstorm activity because of the type of conditions in play. Usually, we need lots of heat, a trigger, and energy in the low to mid levels of our environment to spark strong if not severe storms.

    We’ve experienced this many times, and we’re no stranger to the afternoon sea breeze producing lots of lightning, hail stones, and the synonymous winds that can produce damage similar to that of a hurricane or tornado.

    Damage at the entrance of Whispering Winds subdivision off Markham Woods Road in Longwood. (Copyright 2025 by WKMG ClickOrlando – All rights reserved.)

    In fact, straight-line winds are often confused with that of a tornado because of the intensity and destruction they bring to the table. I personally have experienced instances of straight-line winds here in Central Florida, in desert environments out west, and overseas in the Middle East. They come in different styles and it all boils down to the local area itself.

    That’s exactly what I want to break down with you all today in this article.

    So, what are straight-line winds?

    Right away, every single thunderstorm you observe as you go about your business throughout the day carries with it a lot of wind and a LOT of MASS. Yes, when I say mass, I truly mean exactly as you’d hear in your classic physics class.

    These are your traditional stages of a garden-variety thunderstorm we see here in Central Florida. Notice the red and blue lines indicating the flow of air, wind, inside a thunderstorm. It’s during the dissipating stage where these winds come down all at once producing the potentially gusty and damaging effects. (Copyright 2025 by WKMG ClickOrlando – All rights reserved.)

    A thunderstorm — albeit we imagine clouds as weightless, wispy pillows in the sky — is HEAVY. Channel your inner Marty McFly with me, “This is heavy, Doc.”

    What occurs inside a thunderstorm are two distinct mechanisms that drive the winds inside a storm structure. You have your updraft on one side and the downdraft on another. The downdraft is typically where you find your rainfall. As the name implies, that’s why it’s falling, the downward movement of winds and precipitation in the individual storm.

    Once we have enough dry, cool, and heavy air built up inside a thunderstorm, the updraft begins to collapse. The high surge in mass rushing downwards towards the ground level is where the name downburst or downrush comes from! (Copyright 2025 by WKMG ClickOrlando – All rights reserved.)

    Some of the different ingredients we mention here in the digital realm and on air go into forecasting if a storm is capable of creating winds strong enough to cause destruction or even injury.

    Things like storm energy, dry air, warm and cooler air all play a role in how much of a punch these currents of winds can carry.

    Yesterday we notably had an enormous gap in our rainfall. Late Tuesday into very early Wednesday there were some lingering showers. But, some dry air managed to find its way into the area, creating enough of a void to fill in with additional storm energy and what was needed to produce very strong winds in the few thunderstorms that did blossom. (Copyright 2025 by WKMG ClickOrlando – All rights reserved.)

    One factor that could have influenced the intensity of the thunderstorms we saw earlier on in the day yesterday is the Saharan dust. Stick with me here. Usually we hear how the dust tends to cap off any bad weather and how it is especially suppressive with anything tropical in the Atlantic, but research has shown the dust itself can sometimes behave like the dry line phenomena more commonly seen in eastern New Mexico and west Texas.

    By that I mean in certain instances, it can help versus hurt storm growth whether it be local weather or your spins in the tropics. It’s all a matter of whether the area can win the meteorological “lottery,” as I like to call it.

    So there could be a case where despite having no severe risk highlighted for Central Florida, as the first bits of the dust plume rolled in, it helped act as a bit of a trigger for further thunderstorm growth before really capping us off like we see in our skies today.

    Dusty air is warm but it is dense. Density plays a huge role in thunderstorms, especially when talking about a storm’s updraft and downdraft strength. If we introduce a bit of drier air into the mid to upper portions of your thunderstorm, it actually HELPS encourage the storm to strengthen. Kind of reminds you of the phrase, ‘Too much of a good thing is a bad thing.’

    If you look from Doctor Phillips down to Sebastian, that whole “bow” was what created the wind event that knocked over the crane. This phenomena is called a bow echo. Echoes are what we see on radar, what the dish itself pulls in we see as “echoes” The bow you can see is like an arch with shades of green, yellow, and red. This is a staple identifier for meteorologists to know when and where very fast moving winds are happening. (Copyright 2025 by WKMG ClickOrlando – All rights reserved.)

    We see straight-line winds when an updraft carries so much weight at once, it suddenly collapses. Your updraft loses the upward motion that helps bring the thunderstorm to life. I’ll hit you with another phrase, “What goes up must come down” — all that wind, rain, and energy then comes down right on top of you.

    Oftentimes you can see this on a radar when your favorite meteorologist is on television breaking down the local threats in your neighborhood. This is almost always the case when we see our afternoon sea breeze begin. The sea breeze in itself has a lot to do with heat and density, but we can save that for a future discussion together.

    Yesterday the environment was primed to produce some quality downrush winds as they’re coined. As the name suggests, you have mass in the form of winds moving downward toward us at the ground. When these winds meet the ground, they can’t go through it, so they aggressively fan out in all directions producing the straight-line wind event.

    Given the size and vertical extent of a crane, reaching sometimes several hundred feet into the air, these winds and the natural density said winds carry can topple huge structures. This is precisely why NWS provides us with warnings for severe winds. It is also why it distinctly uses the words “damaging winds” in its warning narratives to alert us of what’s occurring.

    Just as it does with hurricanes, the general flow of the air in the local environment plays a role in downdraft wind speeds. If they happen to be moving with the environment, they can pick up speed and become more menacing than what you’d believe at first glance. Yesterday storm motion was perfectly in sync with the winds in the general area, helping to likely amp up what happened. (Copyright 2025 by WKMG ClickOrlando – All rights reserved.)

    Unfortunately, the forecast seemed to bust yesterday. A special weather statement was issued for winds in excess of 40-50 mph. These are considered sub-severe criteria. But there’s a reason we have levels to the info we put out and why the severe thunderstorm WARNING was warranted given what was happening in real time.

    Why Watches, Warnings and Advisories matter TO YOU

    There are three distinct categories of alerts we utilize in meteorology: Watches, Warnings, and Advisories. We used to characterize them as “WWAs” in Air Force Weather during my time as a USAF forecaster.

    They are indeed designed to act as levels for bringing situational awareness to a bad weather scenario.

    A WATCH simply means we have what we need to create potentially destructive weather. An ADVISORY is a general “heads up,” we’ve got some inclement weather headed your way that may cause problems if you’re outside, on the road, working outdoors, and so on.

    A WARNING, like one you’d receive from a partner, a friend, a coworker, a boss, means, “Look, something big is going down and I’m warning you to take heed.”

    In a separate article or discussion coming soon, I want to break down a bit of the “lead time” behind these individual categories. Lead time is very important to you all and plays a vital role in keeping you safe when something weather-related strikes your area.

    News 6 Weather Insider

    More Stories Like This In Our Email Newsletter

    Copyright 2025 by WKMG ClickOrlando – All rights reserved.

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