UPDATE 1 PM WED: Flash Flood Risk Once Again Growing Vermont/New Hampshire This Afternoon

The area within the sort of pink cloud on this
map from NOAA is at risk for flash flooding
this afternoon and evening. 

 I'm hoping this will be the second false alarm in two days, but I think not.  

The flash flood threat in parts of Vermont and New Hampshire are growing this afternoon.

As of 1 p.m.  feeder band of wet air and heavy showers is working its way up through New Hampshire, the Connecticut River valley on both sides of the river and into Vermont's Northeast Kingdom.

Meanwhile, a broken band of growing showers and storms is slowly working its way into the Champlain Valley of New York and will soon cross into Vermont.  Other showers are starting to form in central Vermont.

This thick moisture flow, and the convergence of these two bands of south to north moving downpours will ramp up the flash flood chances this afternoon.

Some sunshine that broke through in Vermont helped increase instability. Moisture is available in a thick layer of the atmosphere, so that opens the door to heavy rains. 

 NOAA's Weather Prediction Center, in a special statement about the risk, had this to say early this afternoon: "This impressive overlap of forcing and moisture will produce widespread convection this afternoon and evening with rainfall rates likely eclipsing two inches per hour."

It's even possible the strongest storms could dump an inch of rain within 15 minutes. 

Soils have gotten much wetter in Vermont and New Hampshire. In some spots in both states, as little as one inch of rain within an hour or 1.5 inches within three hours might be enough to start triggering some flooding. 

The more we go over those figures, the worse it would get. 

Since the moisture and storms are on a south to north conveyer belt, the heaviest rain could keep hitting the same spots for a few hours.   

Anywhere in Vermont is at risk for flash flooding today, with the highest threat  from the Green Mountains eastward on into New Hampshire and western Maine, along with parts of Massachusetts. 

I would give New Hampshire the nod for the highest risk of flash flooding today, but all the areas I mentioned are susceptible

It did appear yesterday a flash flood threat would materialize along and west of the Green Mountains. That didn't really materialize. However, the threat today from the Greens eastward seems greater to me than anything we had yesterday. 

The weak front driving the line of showers over far eastern New York early this afternoon should crawl eastward by this evening, so the flood threat should diminish toward sunset.