First Crack at Severe Weather (Has the GFS Ever Lied?)

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Here on the last day of February–just one day before meteorological spring begins–temperatures are finally settling into a warming trend here in Michigan. With plenty of snow still on the ground but the promise of better days in sight, and with me feeling my repressed itch for severe weather beginning to surface too insistently not to scratch, I’ve cast a wistful eye on the long-range GFS.

At 180 hours out from today’s 6Z run–in other words, on March 7, early afternoon–things look interesting. Not inspiring, just something to keep an eye on. If you’re a

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fellow storm chaser, you know the drill, and you know how the models change. With that caveat, while I haven’t been an avid follower of the GFS these days, I seem to recall that it was painting a somewhat similar scenario last week.

Anyway, here are the surface maps for sea level pressure and surface dewpoints at 18Z, March 7. Click on the images to enlarge them. Obviously the moisture could stand improvement, and I wonder whether sea surface temperatures in the Gulf will be warm enough to deliver, but let’s see what happens from here.