From my post last year about the Jan 25, 1985 event:
It was Friday, January 25, 1985. Story time!
I just got finished up with dinner. Turned on the TV and was flipping through channels. WTTG (Channel 5 in DC) was always sensitive to sferics and I used that to know in the summer when TRW was nearby or so. Never expected to see white static and crashes through the speaker in Jan. WTF! So I watched and again, not even a minute later, another one! So, I take a look out my den window facing due west and sure enough, I can see lightning in the distance. While this would be no biggie in May, in Jan it is and this area rarely sees thundersnow. As I kept watching, I noticed what I thought was a dog that got loose from one of the neighbors. It waddled closer in and to my surprise it was a HUGE Canadian goose! Well that surely was strange. And then there was another flash that was bright enough that it took my attention off the goose. I noticed a few flurries coming down as well. There were two more flashes and I heard thunder. This was sounding just like a decent thunderstorm approaching in the spring or summer. But! It was snow. And boy did it snow. The streetlights up on the main road disappeared and I thought perhaps the power went out, then the houses across the street completely obscured from view! Not foggy-ish, just gone. Then I realized what was happening. It arrived. What would normally be a torrential downpour was an intense snow squall that was a total white out. Looking out the window was like looking out there with a white sheet over the glass. Simply amazing. There was a blinding flash followed by thunder less than a second later. It was exceeding blue-white brilliant like a huge high intensity discharge (HMI) lamp starting up. The wind was also roaring. I ran downstairs to my shack and checked and the wind speed on my Heathkit ID4000 was at 49 mph. It was a very high sustained wind during the event. The peak gust was 53mph. The anemometer was mounted at 10 meters on a free standing Rohn 25G tower so those numbers are legit.
The funniest part of the story is when I pulled the curtain back to look outside, there was a blinding flash of light and right outside the window was that damn goose! I scared him and he spread his wings and jumped in the air and I nearly fell backwards away from the window. I actually recall screaming, it was that bad. If you've ever seen the movie Free Willy, near the beginning where the kids were at the aquarium painting the tank windows with graffiti and the lightning flashes and Jessie sees Willy for the first time with mouth open and screams, well there you go, that's it right there!
Anyhow, after that was over, we had a good 6 or 7" of new snow in well under an hour, 40-45 minutes tops and most of that was in that heavy burst. I would not want to be caught driving in something like that for sure. Those are the kind of *instant whiteout* that cause big traffic pileups on the interstate. Because someone is going to stop and someone isn't.