POTOMAC'S WEATHER PAGE
Well, actually these have been stolen from the Weather Channel, with almost total disregard for any copyright or intellectual property rights whatsoever; except, of course, for my somewhat self-conscious mentioning of the matter within this paragraph.  This at least reflects some moral basis on my part, even though I have clearly chosen to not actually apply such principles in this case.

On the other hand, as the Weather Channel does cross my awareness, which I do claim as my own territorial waters, and they do so without paying import or export duties, I could seize their intellectual property for lack of proper taxes and duties being paid, using some obscure high-seas laws from the grand old piracy days.  But that would be unreasonable, don't you think?  Oh, yes, the weather...

Northeast U.S. Doppler Radar

Current U.S. Weather

National Airport Overview

Surface Winds

5,000 Foot Winds Aloft

US Lightning Strikes
US Aircraft Icing Potential