The recent disaster also occurred on the watch of a collection of some of the world’s best forecasters, who, for a variety of reasons, are clustered in Washington.
Led by our modern computer output, all of their forecasts failed. The list includes Bob Ryan, a past-president of the 14,000-strong American Meteorological Society, who works for the local ABC outlet. Also included would be Jason Samenow who runs the very popular www.capitalweather.com at the Washington Post, and enjoys cult status in DC. When he walked into my classroom at UVA, I felt like Roy Hobbs’ (“The Natural”) high school coach must have.
The new head of the National Weather Service is the legendary Louis Uccellini. If young Samenow is The Natural, Louis is the Godfather, and his specialty is—wait for it—the Mid-Atlantic snowstorm. In fact, he and Paul Kocin literally wrote the book on them.
I’m pretty sure if Uccellini thought his troops were making a mistake on what was going to be a very public storm, he’d probably call someone and have a chat.
They had every reason to hold onto the snow forecast. Precipitation was moving in from the Southwest. As forecast, what began as rain in central Virginia transitioned over to snow in a couple of hours; even a bit earlier than it was supposed to. Charlottesville, about 80 miles southwest of DC, eventually racked up over 14 inches. The central Shenandoah Valley, thirty miles west of there, hit 20.
At 11:30pm on March 5, it began to rain in Washington, D.C. itself. Within a mere 20 minutes, it switched over to snow as the temperature began to drop through the upper 30s. The ground began to whiten. As the precipitation intensified and the low pressure system became more intense, basic physics said more cooling was on the way. Let the Big One begin!
Congratulatory emails went flying, and beer cans popped forth. Most forecasters went to bed expecting to wake to a winter wonderland.
My thermometer showed 35° and dropping. I set it to alarm at 37°, on the crazy, impossible, off-chance that something would go terribly awry. It went off two hours later, signaling that the bust had begun.
What happened is hardly an indictment, but rather a statement of the human condition. Our “best science” can be wrong.
So, in summary, not only were the best models and the best forecasters largely in agreement (there was one exception: the sophisticated Euro was somehow missing the heaps of snow that were already piling up down in Virginia), a ll evidence indicated that the snowstorm was unfolding as planned. See any parallels with global warming? Sophisticated climate models and highly trained scientists, and a smart warming that began around 1975.
Oh, the lack of any warming for seventeen years now? My climate alarm just went off.