Northeast Storm Precip Analysis

The storm system over the Great Lakes is still spinning in the same place Saturday night.

Doppler Precipitation Estimate Analyses such as the one above showed two interesting things this morning. One, extreme rainfall in Connecticut, localized amounts over a foot by this chart, though most storm-total radars (saved here) indicated closer to half a foot. Either way, it was a lot of rain and dozens of flood reports were received by local National Weather Service offices from Boston to Philadelphia.

The other interesting thing to note is the "eye" over Lake Michigan. This indicates that the center of the storm system (which has a rain-free area like a hurricane) was stationary for nearly 24 hours, something very rare to see on a 24-hour precip estimate map.

The radar animations from yesterday's blog have been updated to 3-day animations:

NOTICE: THESE ANIMATIONS WERE UPDATED TO INCLUDE THE REST OF THE STORM. PLEASE SEE NEW VERSIONS HERE.

Hi-Res U.S. Radar - 48 Hour Loop

Low-Res U.S./Canada Radar - 48 Hour Loop*

The storm will continue to spin over the Northeast through at least early week.

*There is no ground clutter filtering performed on the U.S./Canada radar, so ignore the overnight "blooming".