August 20 Fall Preview Temperatures Supermoon and Ernesto Still A Hurricane

Tuesday August 20 2024

Morning Report

A new air mass and Fall Preview have arrived. A gusty wind from the North will keep temperatures in the upper 60s to lower 70s today. This cooler pattern will bottom out Wednesday morning, with many inland suburbs dropping into the 40s.

A rise back to summer temps will arrive this weekend.

Ernesto is still hanging on as a hurricane in the North Atlantic.

Rewind: Monday Evening Rain Showers

This photo by The Chesapeake Bay Bridge at sunset shows the spotty showers that came in with the cooler air.

Credit: David Sites

First Of Four Supermoons

The clouds may have obstructed your view of the rising Supermoon. However, you can still see it rise tonight while it is looking close to full.

Baltimore Moonrise at 8:44 PM

See more about the 4 Supermoons Through November here:

Morning Temperatures

The start of the cooler air has moved in.

Morning Surface Weather

A large area of High Pressure will be taking over the Eastern US. This will bring cooler temperatures and keep us dry through the rest of the work week.

FORECAST

Afternoon Winds

Gusty winds FROM the North may gust up to 30 mph. This will keep us cooler than average AND make it feel a little like Fall.

Afternoon Temperatures

Many areas remain in the 70s. It is possible that with some additional clouds, the northern suburbs of Maryland and Pennsylvania may be in the upper 60s this afternoon.

ERNESTO STILL A HURRICANE

Satellite Loop

Morning Snapshot

This is still a hurricane with winds of 75 mph and RACING through the North Atlantic along the Gulf Stream. It will eventually succumb to the colder waters and weaken.

5 AM Stats From National Hurricane Center

———————————————-

• LOCATION…47.3N 50.0W
• ABOUT 150 MI…245 KM ENE OF CAPE RACE NEWFOUNDLAND
• MAXIMUM SUSTAINED WINDS…75 MPH…120 KM/H
• PRESENT MOVEMENT…NE OR 50 DEGREES AT 36 MPH…57 KM/H
• MINIMUM CENTRAL PRESSURE…975 MB…28.80 INCHES

National Hurricane Center Forecast

The track takes this close to the Canadian coastline, then into the North Central Atlantic.

-EXTENDED FORECAST BELOW-

CLIMATE DATA: Baltimore

TODAY August 20

Sunrise at 6:25 AM

Sunset at 7:54 PM

Normal Low in Baltimore:  65ºF

Record 49ºF in 1998

Normal High in Baltimore: 86ºF

Record 105ºF 1983

Summer Hot Day Totals At BWI

8 Days at or above 100ºF

39 Days total at or above 90ºF 

THANK YOU:

Baltimore Magazine Readers Choice Best Of Baltimore

Maryland Trek 11 Day 7 Completed Sat August 10

We raised OVER $102,000 for Just In Power Kids – AND Still Collecting More

The annual event: Hiking and biking 329 miles in 7 days between The Summit of Wisp to Ocean City.

Each day, we honor a kid and their family’s cancer journey.

Fundraising is for Just In Power Kids: Funding Free Holistic Programs. I never have and never will take a penny. It is all for our nonprofit to operate.

Click here or the image to donate:

WEDNESDAY AUGUST 21

This will feel like a Fall Preview.

Morning Temperatures

While the 50s dominate the urban areas to Delmarva, inland suburbs will be in the 40s. There is a chance for the 30s in some deep mountain valleys with local frost.

Afternoon Temperatures

Even metro Baltimore will hold in the 70s. A breeze from the Northwest may make this feel like early Autumn.

Jet Stream

Wednesday Morning Snapshot

With a Deep Upper-Level Trough centered in New England and stretching down the East Coast, the morning will be chilly.

Some inland areas will drop into the 40s.

Animation: Tuesday to Saturday

The animation shows the 500mb heights. This is around 18,000 ft and represents the warm and cool air in the atmosphere that responds to how high it is measured.

Here, we can see the influx and established Cool Pattern relaxing to allow a warm-up this weekend.

Saturday Snapshot

A return to near summer temperatures this weekend.

Looking Ahead

Sunday Night

Showers and thunderstorms arrive late from the North.

Monday

Showers and storms.

7 Day Forecast

This Fall Preview will last two days, then back to pleasant seasonal temps and summer heat this weekend. The next chance for rain may arrive Sunday night into Monday.

Please share your thoughts and best weather pics/videos, or just keep in touch via social media.

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RESTATING MY MESSAGE ABOUT DYSLEXIA

I am aware there are some spelling and grammar typos and occasional other glitches. I take responsibility for my mistakes and even the computer glitches I may miss. I have made a few public statements over the years, but if you are new here, you may have missed it: I have dyslexia and found out during my second year at Cornell University. It didn’t stop me from getting my meteorology degree and being the first to get the AMS CBM in the Baltimore/Washington region.

One of my professors told me that I had made it that far without knowing and to not let it be a crutch going forward. That was Mark Wysocki, and he was absolutely correct! I do miss my mistakes in my own proofreading. The autocorrect spell check on my computer sometimes does an injustice to make it worse. I also can make mistakes in forecasting. No one is perfect at predicting the future. All of the maps and information are accurate. The ‘wordy’ stuff can get sticky. 

There has been no editor who can check my work while writing and to have it ready to send out in a newsworthy timeline. Barbara Werner is a member of the web team that helps me maintain this site. She has taken it upon herself to edit typos when she is available. That could be AFTER you read this. I accept this and perhaps proves what you read is really from me… It’s part of my charm. #FITF