September 21 Warm Final Day Of Summer Then Showers And Storms Followed By A Cool And Wet Week

Saturday, September 21, 2024

Morning Report

Today is the last full day of summer. Fall (astronomic) officially begins Sunday morning at 8:43 AM, and it will feel like it. So enjoy the warm weather today to close the season.  Temps will push into the 80s, then afternoon thundershowers in the mountains will push east into metro areas overnight

Sunday will start damp and remain cloudy and cool. This will set us up with a cooler pattern and more rain later next week. Something tropical is potentially trying to form in the Gulf of Mexico. It is not promised to get a name, but it looks likely to send us more rain next weekend. For the thousands of people I will join riding in the Seagull Century next Saturday, this is not the best news. I’ll be watching it closely.

Coastal Flood Warning

The highest water levels in places like Annapolis are expected tonight and Sunday. Water may reach 3.5 feet above normal, impacting the downtown City Docks area.

Annapolis High Tides:

• Saturday: 7:57 AM; 8:53 PM
• Sunday: 8:57 AM; 9:50 PM

Morning Surface Weather

We remain warm and muggy this morning. The next push of cool air will be a cold front that arrives from The Great Lakes tonight. There is a narrow band of rain and thunderstorms that will continue to develop and spread our way tonight.

The old storm offshore will continue to push water onshore, raising the high water along the coast and up the Chesapeake Bay.

RADAR INTERACTIVE WIDGET

Afternoon Temperatures

FALL FOLIAGE UPDATE THIS WEEK

Click here for the full regional report

CLIMATE DATA: Baltimore

TODAY September 21

Sunrise at 6:54 AM

Sunset at 7:04 PM

Normal Low in Baltimore:  57ºF

Record 37ºF in 1956; 1962

Normal High in Baltimore: 78ºF

Record 96ºF 1895; 1931

SECOND OF FOUR FULL SUPERMOONS

Click to see the full report:

SUNDAY SEPTEMBER 22

NOTE:

Fall Begins At 8:43 AM Sunday

Radar Simulation: Midnight to 4 PM

Overnight showers will last into the morning… then diminish to the mountains by the afternoon. It will remain mostly cloudy and cool.

Morning Snapshot

Morning Temperatures

Noon Snapshot

Wind Forecast

Light flow from the East will keep the damp and cool feel to the air.

Afternoon Temperatures

LOOKING AHEAD

GFS Model Forecast Animation

Monday Through Friday

The weather pattern will be nearly stalled during the week. Steadier rain will fall across the Ohio Valley and the mountains, sending waves of showers our way each day. The chance will be lower farther east.

The big question is the potential tropical system trying to form in the Gulf of Mexico and move onshore into next weekend.

Friday

It is too early to state how strong that storm in the Gulf of Mexico will be, let alone if it will be named. It will more than likely be sending tropical moisture north along the front, feeding rain into our region.

TROPICAL OUTLOOK

The National Hurricane Center 7-Day Outlook

40% chance for something to form in the Gulf of Mexico. This is a suggestion and not a promise. Remember the no-name storm we had off the South Carolina coast last week? It will more than likely still spread moderate to heavy rain our way during next weekend.

7 Day Forecast

A shift to cooler days in the 70s. Chance of showers almost every day. The better chance for rain will be in the mountains.

We will watch (not promise) something tropical trying to form in the Gulf of Mexico by the end of the week. If so, it may impact our weekend weather.

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

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THANK YOU:

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Maryland Trek 11 Day 7 Completed Sat August 10

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

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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.

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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