Parade of outflow boundaries! ⛈ Rain-cooled air from thunderstorms (its downdraft) is crashing to the ground and spreading out (the outflow boundary). With no prevalent wind today, these outflows are thriving. We’ve been seeing these on radar today, which show up as faint lines racing away from the spotty thunderstorms. On a humid day like today, all that extra moisture helps strengthen the downdraft, making the outflow even more noticeable. These boundaries can cause a quick wind shift, a drop
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Parade of outflow boundaries! ⛈ Rain-cooled air from thunderstor…
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Here is my explainer on outflow boundaries and summer storms in case you missed it at 5 PM! Outflow boundaries are a wave of relatively cooler air that rushes out of thunderstorms as they collapse! Basically these act as small scale cold fronts! In this case it has sent the temperature at Little Rock from 94 back into the 80s! These boundaries can also initiate new storms which we see tons of this time of year! | Meteorologist James Bryant
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Here is my explainer on outflow boundaries and summer storms i…
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FacebookMeteorologist James Bryant
OBs (or Outflow Boundaries) are kind of cool and odd at the same time. They form when a mature thunderstorm loses its updraft mechanism and starts decaying. The cooler air at the top of the thunderstorm will fall to the ground as the updraft stops. When this happens, the cooler air will spread out in almost all directions once it hits the ground. The cooler air acts like a mini-Cold Front and you'll get a nice cool breeze when the OB moves through your area. The cooler air from an OB will mix ou
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⛈Here's a little bit of outflow boundary magic out in the panhandle of Texas from this evening! When a thunderstorm pulses downward or collapses, rain-cooled air will rush towards the surface and spread out in all directions. Those thin green lines that you see on radar aren't precipitation, it's actually debris and other small particles! What you're seeing here on radar is two outflow boundaries colliding and rapidly forming new thunderstorms. You can think of it like this--when you press the f
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