The SECRET Signal Before Tornadoes Form

Join the Chaser Academy:    / @stormchasercoaching   Join the Discord community:   / discord   Get FREE Chaser Safety Ebook: https://stormchasercoaching.com/eight... Get FREE Dixie Alley Ebook: https://stormchasercoaching.com/dixie... Buy SCC Merch: https://storm-chaser-coaching.mysprea... Follow SCC on Twitter: https://x.com/TornadoCoaching Follow Trey on Twitter: https://x.com/ConvChronicles Most storm chasers watch the radar — but the real pros know the secret is hiding in plain sight on satellite imagery, long before the first storm even forms. In this video, you'll learn how to use satellite tools like visible, infrared, and Day Cloud Phase imagery to track shortwaves, identify outflow boundaries, and read the exact signals that tell you when — and where — tornadoes are most likely to develop. 0:00 Tracking Shortwaves with Satellite 1:39 Identifying Outflow Boundaries 3:28 Outflow Boundary Tornado Potential 4:41 Slow vs. Fast Moving Boundaries 6:12 Reading a Boundary: Live Example 8:32 Cloud Streets & Horizontal Convective Rolls 10:06 Cumulus Field to Storm Initiation 11:29 Orphan Anvils & Capping Inversions 13:01 Day Cloud Phase Product Explained 14:37 Using Day Cloud Phase for Initiation 15:57 Day Cloud Phase: Daytime Use Only In this advanced storm chasing tutorial, meteorologist and storm chasing instructor breaks down how to use satellite imagery as a powerful forecasting and nowcasting tool — giving you the ability to spot tornado-producing setups before the first storm ever forms. The video begins with a foundational concept: every severe weather event needs a forcing mechanism to lift surface air into an unstable atmosphere and trigger storm initiation. In most cases, that forcing mechanism is a shortwave trough. While water vapor satellite imagery is commonly used to track shortwaves, this tutorial shows how visible and infrared satellite imagery can also reveal the arrival of a shortwave through bands of high cirrus clouds. When the leading edge of those cirrus clouds overspreads your target area, watch closely — storm initiation and intensification often follow rapidly. From there, the focus shifts to outflow boundaries, one of the most critical — and often overlooked — features in severe weather forecasting. Outflow boundaries form when a storm complex exhales cold air into the environment, creating a sharp interface between cold outflow and warm inflow. On visible satellite imagery, they appear as faint lines of small cumulus clouds. These boundaries matter for two reasons: they act as a focal point for new storm initiation, and supercells that anchor to and track along a boundary gain access to enhanced low-level wind shear and vorticity, dramatically increasing their tornado potential. The tutorial covers exactly what makes a boundary favorable — slow-moving or stationary orientation, alignment parallel to storm motion — versus unfavorable, such as fast-surging boundaries that undercut storms and push them into an elevated, stable air mass. The video then walks through the progression of convective initiation visible on satellite: from a disorganized cumulus field, to agitated cumulus congestus, to the telltale orphan anvil (a sign the atmosphere isn't quite ready), and finally to sustained cumulonimbus development. Understanding this sequence lets chasers and forecasters anticipate when and where storms will fire. The tutorial closes with an in-depth look at the Day Cloud Phase product, a multi-band GOES satellite tool that highlights differences in cloud reflectance to distinguish water droplets from ice crystals. As cumulus updrafts strengthen and glaciate, their color signature shifts from light blues and greens to bold yellows and oranges — a real-time indicator of which storms are becoming the most robust and worth watching. #stormchasing #weather #satellite