Onshore Flow Begins Rain Creeping Northward Next Several Days Smoke Issues To Diminish

Onshore Flow Begins Rain Creeping Northward Next Several Days

Smoke Issues To Diminish

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WEATHER IN A MINUTE

Onshore Flow Begins Rain Creeping Northward Next Several Days

Smoke Issues To Diminish

High pressure extends from the Great Lakes to New England and at least initially, it is suppressing clouds and rain to our south. The satellite loop shows clouds advancing northward into Southern Pennsylvania and Southern New Jersey. Even some rain echos are shwoing up on the regional radar across Maryland and Delaware but most of that will be suppressed to the south, at least for today. This leaves us in a state of partly sunny skies with more sun north and less to the south. Winds will be from the east today as the onshore flow begins and that should keep temperatures today mostly in the 70s.

SATELLITE

storm free

WEATHER RADAR

storm free

The onshore flow will remain with us for the rest of the week. Heavy rain will be occuring across the Mid Atlantic south to Florida over the next several days leaving several inches of rain or more in some places. The upper air flow will be turing to the south and this is important because that opens the door for all the showers and thunderstorms across the Southeast and Deep South to finally move northward.

Look for some clouds around tonight with most lows in the upper 50s to mid 60s. Then Wednesday we will see rain advance into Southern Pennsylvania and Southern New Jersey, though that rain on the northern edge probably shouldn’t amount to much. Areas to the north toward NYC and points north probably will be cloudy to partly sunny. Highs again will be in the 70s.

As the southerly flow continues to take hold along the East Coast, and the flow from the ocean continues we will see clouds and some rain spreading northward Wednesday night and Thursday. The chances for rain will continue from Thursday right through the weekend. The upper low over the Ohio Valley remains trapped and as a result we have a cold unstable moist atmosphere up and down the East Coast.

Most of the area will see rain Thursday with highs in the upper 60s coast and low to mid 70s inland. This will be a situation from Friday through Sunday where the upper low and the unstable atmosphere will be most active during the day side and less so at night. This means that late night and morning could start dry but then downpours and thunderstorms will fire up during the day only to wind down again at night. That should be the story for Friday through Sunday with highs mostly in th upper 60s to mid 70s as clouds and rain along with a wind off the ocean keep temperatures down.

As far as rainfall goes this map is the forecast rainfall through Thursday evening with large amounts of 6 inches or more showing up for the Central Appalachians while amounts tail of as you head north into NY and New England. Look for amounts though to go up as this only covers through 8pm Thursday and we could see some areas double these rainfalls by the time we get through the weekend. One upside to the developing southerly flow will be the smoke issue and if the flow from Canada is cut off, that should mean that the smoke that is around today should begin to diminish Wednesday and it could be mostly gone in the Northeast and Mid Atlantic by Thursday. As long as the upper flow from Canada is cut off, we will get a break from the wildfire smoke.

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MANY THANKS TO TROPICAL TIDBITS FOR THE USE OF MAPS

Please note that with regards to any severe weather,  tropical storms, or hurricanes, should a storm be threatening, please consult your local National Weather Service office or your local government officials about what action you should be taking to protect life and property.

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