Thursday 10 a.m.
Thunderstorms raced from Pittsburgh to Philadelphia in less than seven hours this morning. Wind gusts to 50-60 mph hit a number of locations, but for most people the intense lightning and cloudburst of rain made the biggest impression. Heavy rain will now head from New York state across southern and central New England. Dry, pleasant weather should take over in the Northeast to start the weekend, but showers and thunderstorms can return to the Great Lakes Saturday and reach the I95 corridor later Sunday.
Here are the Northeast and Chicago area videos from this morning.
More than 110,000 lightning strikes occurred in the northeast third of the nation in the 24 hours ending at 11 a.m. EDT today (June 13).
I will be out of the office until July 1, but I expect to post here occasionally.
The cold front is embedded in a large area of clouds, showers and thunderstorms covering the middle of the country. It will advance past the Northeast coast by the end of the day Sunday. The frontal zone is shown on this picture from late morning Friday.
When weather systems are relatively weak, small scale variations cause forecast uncertainty because several different weather types (such as showers, sunshine, cloudiness, etc.) can coexist in the same region and change constantly. This map shows such a pattern:
Some of the thunderstorms can become severe, with damaging wind and brief cloudbursts of rain. The greatest chance for locally severe storms should be in the "S" areas highlighted on this map (based on the NWS Storm Prediction Center's guidance).
There is a slight risk for severe thunderstorms later today from north-central Tennessee up across Indiana and Ohio to Michigan and eastern Wisconsin (shown by the "S" area on the map below. Thunderstorms are not predicted for areas near the coast from Delaware to New England.
It is not going to snow any time soon, but in any type of weather the flag is a symbol of freedom. This holiday weekend we celebrate the contributions of those who were there to defend the freedoms we enjoy in these times.
Once again, the rain will miss much of central and northern New England. The region has been in a dry spell, as evidenced by its appearance on this U.S Drought Monitor map.