Low pressure in the Great Lakes will spawn a very intense coastal low near Maine.  The associated warm front moves through early morning and then a sharp cold front moves through about noontime Thursday.  The models agree with the cold frontal timing, but disagree with the precipitation regarding the warm front.

The NAM and associated models have showers and perhaps some thunderstorms breaking out with the warm front, as early as 8AM in our area.  The GFS waits for the actual cold front passage timing for the showers, about noontime.

It will become windy at daybreak and increasingly windy with the frontal passage— gusts near 40-50 mph.  It will remain very windy in the afternoon.  The winds are due to an intense pressure gradient between the intensifying low and the large high pressure system moving in.

This front ushers in a short-term upper air pattern change with an upper air cold cyclonic flow.  Look for unseasonably cold weather, windy conditions and changeable skies, again with another frontal passage on Monday.

Revised Wed 07:29 AM — Last night’s models show a very low chance of more showers/thunderstorms between 2 and 5 PM Wednesday.  If they occur, they will be very widely scattered.  Sun breaks out mid-morning…The EKDMOS is still showing high temps of 78º today.

Today’s weather was much nicer than predicted by last night’s models.  This morning’s models had significantly backed off from the previous night’s poor pessimistic forecast and moved the heavier precipitation from this evening to early Wednesday morning.

The current models runs are all showing showers and thunderstorms moving through here 3-5 AM Wednesday morning.  Some may be heavy.

Wednesday will have a mix of sun and clouds and a southerly flow will bring temperatures into the 70s.  The EKDMOS is showing 78º, but other models are in the low to mid 70s.

There’s another chance of showers and thunderstorms about 2-3PM  Wednesday afternoon.

Interesting weather for Thursday with a cold front.  I’ll tackle that tomorrow.