Tuesday, February 13, 2007

Westward shifting



The models continue to trend slowly westward. We dont want that anymore! Now, even here in Keene, we may have to deal with a change to sleet tomorrow afternoon. In addition, highest QPF will be further west. So right now, it looks like we have a good shot at 1.25" to 1.5" QPF, but with snow to water ratios closer to 9 or 10. So even though my final official forecast will remain at 16 to 22 (for analysis on accuracy), I'll lower my current forecast to 12 to 18 inches.

What we need to watch is the pressure drops from the low entering the lower OV, and the developing coastal low. If the coastal can strengthen further, which a few meteorologists think is more possible, then the largest accumulations (around two feet) will likely shift to our area.
I've lowered percentage chance for a snowday tomorrow to 90% (still expecting one though).
Also, I'll add Thursday to the snowday potential (for a delay) since winds and light snow could continue through Wednesday Night into early Thursday Morning.

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