More from Greg Fishel
THICKENING FOG MEANS THE WARM, MOIST, UNSTABLE AIR IS JUST ABOVE THE SURFACE.
Visibilities have been dropping across much of the Triangle area due to fog, which often times occurs just before the warm air, just above the surface, finally makes its way down to the surface. Where this occurs is going to be critical in terms of specifying where the tornado threat is going to be greatest. It still appears to me that the greatest threat will be along and east of the I-95 corridor, where temperatures are likely to take a quick jump upward this afternoon along with a noticeable increase in wind speed. Now if you live in the Triangle, here's a way you can make your own forecast. If skies suddenly brighten, the temperature jumps upward into the 60s to near 70, and the wind begins to gust from the south, then the threat of tornadoes late this afternoon has increased. But if it stays murky and cloudy with some fog, then the threat will be much reduced. Time wise the greatest threat appears to be in the time frame of 4-7pm, with the threat ending from west to east by early this evening. This is NOT an imminent threat, so we still have at least a few hours to watch this entire scenario evolve. Stay safe, but don't panic.