Timeline for Is there a convenient place to get vertical wind shear info for my location?
Current License: CC BY-SA 3.0
6 events
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| Jul 3, 2014 at 17:55 | comment | added | casey | @EdStaub BRN and shear in general is a better predictor of the type of thunderstorm you'll get rather than whether you will get one at all. Combined with CAPE you have a better predictor (and this is what BRN does and takes into account you'll need more CAPE in a higher shear environment in general) but it still misses the whether a storm will actually initiate. The soundings on the page are are also generally limited to twice a day, this time of year being 8AM and 8PM EDT, so the CAPE (and thus the BRN) shown will evolve as solar heating takes place throughout the day. | |
| Jul 3, 2014 at 16:10 | comment | added | milancurcic | Sorry, I got that backwards - Ri ~ buoyancy/shear. | |
| Jul 3, 2014 at 15:09 | comment | added | milancurcic | @EdStaub It requires quite a level of expertise to predict near future conditions based on current soundings. Though I am a meteorologist, I do not specialize in convection or cloud physics, so I hope somebody else chimes in on this. Higher bulk Richardson number (shear over buoyancy) may imply less chance for forced convection, so you are on the right track. See their soundings help page for explanations on various numbers they give (updated in my answer). | |
| Jul 3, 2014 at 15:06 | history | edited | milancurcic | CC BY-SA 3.0 |
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| Jul 2, 2014 at 20:44 | comment | added | Ed Staub | Thanks - but I'm pretty clueless as to how to use it. My best guess is, for my purpose, to look for a BRN shear number (center of middle bottom panel) above 20 or so. Am I close? Am I better off eyeballing some graphic? | |
| Jul 2, 2014 at 20:09 | history | answered | milancurcic | CC BY-SA 3.0 |