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 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
4.8K views10 months ago
FacebookBlake Hansen
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 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
4K views9 months ago
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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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
456 viewsJul 27, 2024
FacebookStormdar Weather
What is an Outflow boundary?
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What is an Outflow boundary?
Jun 27, 2019
katv.com
What is an Outflow Boundary? - The Weather Station Experts
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What is an Outflow Boundary? - The Weather Station Experts
Jun 9, 2024
theweatherstationexperts.com
What is an outflow boundary?
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What is an outflow boundary?
Mar 27, 2019
ABC7 ChicagoLarry Mowry
⛈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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⛈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
1.6K viewsMay 16, 2024
FacebookBAM Weather - BAMWX.com
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Over the Gulf, and just west of Florida, thunderstorms form on the outflow boundaries of previous storms. | Cooperative Institute for Research in the Atmosphere
1.4K views8 months ago
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4:43pm Another amazing example of how outflow boundaries can trigger new thunderstorms — just wait for the last couple of frames… …and then KABLAMO 💥 lol | Denver & Front Range Weather
11.4K views9 months ago
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Textbook outflow boundaries colliding to ignite a severe thunderstorm. Just awesome to see. #pueblo #pikespeak #coax #coloradosprings #colorado | Colorado Storm Chasers
4.9K views9 months ago
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Post Date: 6.28.25 What happens when not one? not two? but THREE outflow boundaries collide? EXPLOSIVE thunderstorm development. You can see a weak cell sitting near Horn Lake slowly start to encounter more forcing until it finally explodes as the boundaries undercut it! Really cool science at work here! | North Mississippi Storm Chasers & Spotters
139.5K views10 months ago
FacebookNorth Mississippi Storm Chasers & Spotters
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Breakdown: Outflow Boundaries: What they are & why so cool
Aug 17, 2020
actionnews5.com
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Boom! 💥 Outflow boundaries (wind blowing out of thunderstorms) colliding to make more ⛈️⛈️ | FOX 13's Paul Dellegatto
24.2K viewsAug 23, 2024
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Outflow boundaries collide and provide the lift for a big bust of lightning, storm is fading quickly now. I drew in the outflow for you in the white lines so you can follow along. | Meteorologist Ross Whitley
2.6K viewsJul 14, 2021
FacebookMeteorologist Ross Whitley
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Holy outflow boundaries, Batman! Three way outflow boundary collision just east of Three Way, Arkansas! ⛈⚡️💨 | US National Weather Service Memphis Tennessee
9.9K viewsJun 1, 2022
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You know it's summer in the South when your thunderstorm outflow boundaries make nearly perfect circles. Localized gusty winds are possible with this activity today. | US National Weather Service Memphis Tennessee
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What is an outflow boundary?
10.5K views9 months ago
YouTubeWWLTV
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There are several outflow boundaries (thin circular bands extending from the thunderstorms) are intersecting with each other and sparking new storms. These are not particularly strong, maybe 40 MPH winds & pea sized hail, but the rain rates are very fast. Flooding is our main concern for the Memphis metro. There's also frequent lightning so if you're doing outdoor activities in Memphis, have a place to take shelter! ⛈️ | US National Weather Service Memphis Tennessee
23.2K views8 months ago
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Outflow boundaries and the Seabreeze controlling the the storms. Franklin county storms will fade as air stabilizes there over the next hour. | Meteorologist Ross Whitley
87 viewsJul 28, 2023
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Watch how the outflow boundaries (little blue lines) interact and collide with one another to create new storms. CLICK FOR AUDIO NARRATION AND DETAILS. | WKRN Davis Nolan
3.8K views10 months ago
FacebookWKRN Davis Nolan
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What’s an outflow boundary, and how does it spark storms? #weather #aviation #thunderstorms
6.8K viewsSep 7, 2023
YouTubeBoldmethod
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Continuing to monitor thunderstorms and what I’m watching is two outflow boundaries that may spark more storms across the northern front range in my oval circle shape thingy in the next 30-60 minutes. | Denver & Front Range Weather
62.4K viewsAug 2, 2024
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Radar Expert: How To Spot an Outflow Boundary?
Jul 22, 2022
The Weather ChannelRob Shackelford
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Outflow boundaries are a huge part of the weather along the Gulf Coast of South Florida. Finding them and then anticipating where they will collide can help you determine where things turn stormy next. Gulf Coast News | Rob Duns
698 views8 months ago
FacebookRob Duns
2:14
What is an Outflow Boundary?
9 months ago
MSNKXRM Colorado Springs
1:45
Sunny to stormy in 30 minutes: The science behind outflow boundary collisions in Colorado
127 views10 months ago
YouTubeKOAA 5
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Merging outflow boundaries are leading to robust storm development across NE Logan and SW McLean Counties. Bloomington/Normal and southern portions of McLean County should anticipate periods of torrential rain, frequent lightning, and locally strong wind gusts. Posted 4:19 pm 8/12/25 | Meteorologist Chris Yates
2.6K views8 months ago
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Outflow boundaries are what's in! Thanks to its proximity to the KLZK radar, we were able to see some of the inner mechanics of this outflow boundary and how it helped initiate a storm just southwest of Little Rock. What's an outflow boundary you ask? Think "mini cold front" where air behind the boundary is rain-cooled and more dense, while air ahead of the boundary is often warm, moist, and unstable. In this cross section animation, we see the outflow boundary moving left-to-right (west-to-east
1.1K viewsJun 3, 2023
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Wow, here is a neat radar loop of two outflow boundaries smacking into each from opposite directions over Channing, TX. The result is initiation of storms along the collision axis. (Updated version of prior post) | Texas Storm Chasers
851.6K views10 months ago
FacebookTexas Storm Chasers
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[Aug 29, 6:15PM]: Outflow boundaries are propagating southward from North Idaho and NE WA. Wind gusts 20-30 mph have been observed with these boundaries. | US National Weather Service Spokane Washington
6.8K views8 months ago
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