Conditions: Baltimore, Maryland, 04/16/2024 03:30:03 pm
Temperature

75°

Mostly Cloudy

39°

Dew Point
Relative Humidity

27%

Feels Like

75°

Wind (N)

0mph

Air Pressure

30.12

Sun
Sun Rise

06:27 AM

Sun Set

07:45 PM

Day Length

13:18 Hours

Difference

2 min 25 sec gain

Moon
Moon Rise

12:49 PM

Moon Set

03:18 AM

Next: Full Moon

Apr 23,2024

Moon Phase

First Quarter

Climate
Average Low

43°

65°

Average High
Record Low

30°


(1962)

90°


(2012)
Record High
Conditions

September 17 Chilly Morning Then Afternoon Rain And Final Lee Report

Maryland Weather
climate data
National Hurricane Center
Forecast
Tropics

September 17, 2023

Sunday Morning Update

Another chilly start definitely has a Fall Feel in the air and might be accelerating some of the trees turning their colors. We’ve seen an early start in many areas already.  The week ahead continues that trend into the Autumn season with seasonable to cooler weather dominating.

Today a cold front will increase the clouds and bring in rain that is already falling across our western mountains.

Below is a look at the radar and forecast simulations. The rain appears to be moving in faster than model suggestions, so it could reach Baltimore before noon. Definitely morning rain for western and northern suburbs. Plan for afternoon showers or steady rain for most of the region.

Lee is a Post-Tropical Storm in Eastern Canada. It made landfall in western Nova Scotia yesterday with winds at 70 mph, and this may be the final report.

Morning Surface Weather

We can see Lee on the Map in Eastern Canada with 50 mph winds.

Locally a cold front and wave of Low Pressure is what will support the rain we expect today.

Following will be another cool and dry air mass that will take over most of the week ahead.

September 17 Weather Sunday morning

Live Radar and Lightning Widget

See the forecast simulations below.

 

Morning Temperatures

Notice the chilly 40s and 50s across most of the region. With advancing clouds, temps will be limited this afternoon.

September 17 weather temperatures Sunday Morning

Temperature Forecast

It will be cooler with rain moving in.

September 17 weather temperatures Sunday afternoon

 

7 AM Morning Radar

I want to show this snapshot to compare to the models below.

September 17 weather radar Sunday 7 AM

 

7 AM Forecast NAM 3 Km Model

This product is missing some of the short-term rain, so we can expect it is underestimating the rain this afternoon.

September 17 weather radar forecast Sunday Morning NAM

 

Forecast Simulation 7 AM to Midnight

September 17 weather radar forecast Sunday NAM

 

7 AM Forecast WRF  Model

This product is also missing some of the short-term rain, so we can expect it is underestimating the rain this afternoon.

September 17 weather radar forecast Sunday Morning WRF

 

Forecast Simulation 7 AM to Midnight

NOTE: Rain may linger at daybreak tomorrow, then clear out during the day.

September 17 weather radar forecast Sunday WRF

 

Post-Tropical Storm Satellite Loop

After making landfall, Lee is now Post-Tropical and still a potent system for eastern Canada. It has winds holding at 50 mph. It is now showing signs of spreading out as it moves north, which will be followed by weakening.

Tropical Storm Force Winds reach 290 miles from the center.

September 17 post tropical storm Lee satellite loop

 

National Hurricane Center Advisory

5 AM Update

  • LOCATION…46.5N 63.7W

  • ABOUT 35 MI…55 KM WNW OF CHARLOTTETOWN PRINCE EDWARD ISLAND
  • ABOUT 225 MI…360 KM WSW OF PORT AUX BASQUES NEWFOUNDLAND
  • MAXIMUM SUSTAINED WINDS…50 MPH…85 KM/H
  • PRESENT MOVEMENT…NE OR 45 DEGREES AT 22 MPH…35 KM/H
  • MINIMUM CENTRAL PRESSURE…987 MB…29.15 INCHES

September 17 post tropical storm Lee satellite Sunday morning

 

CLIMATE DATA: Baltimore

TODAY September 17

Sunrise at 6:50 AM

Sunset at 7:12 PM

Normal Low in Baltimore:  59ºF

Record 44ºF in 1984

Normal High in Baltimore: 79ºF

Record 97ºF 1991

 

New Reports:

El Niño Advisory: First Look At NOAA’s Winter Outlook Expectations

Winter Outlook 2024 From Two Farmers Almanacs

Return to Cold and Snow

 

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Monday Morning

Rain may linger at daybreak, especially near and east of the Chesapeake Bay. This will be followed by the new cool air mass clearing us out, while clouds may rebuild in the mountains.

NAM 3 Km Model

September 17 rain Monday morning NAM

 

WRF Model

September 17 rain Monday morning WRF

 

Temperature Forecast

Monday Morning

These numbers are seasonal as the final push of rain and clouds start to move out.

September 17 weather temperatures Monday morning

 

Monday Afternoon

We should have a mix of sun and clouds while temperatures remain slightly below average.

September 17 weather temperatures Monday afternoon

 

Looking Ahead

Jet Stream Snapshot Monday

The trough that swings through on Monday will reinforce the Fall Feel to the air. Mornings will be cool and afternoons will be dry and mild in the sun. Slight warming later in the week, but still within the margin of ‘normal’.

September 17 forecast jet stream Monday

Animation Monday through Thursday

September 17 forecast jet stream

7 Day Forecast

The reinforcing cool air pattern will keep us near or slightly below average. A brief warmup later in the week and remaining mostly dry.

September 17 Weather Forecast 7 Day Sunday

 

EXPLORE MORE

2023 Hurricane Season Forecast With An El Niño Watch

 

EARLIER IN AUGUST: Maryland Trek 10 For These Kids

I will have a follow-up and recap on our amazing week shortly.

Maryland Trek 10 Kids

 

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La Niña Has Ended. El Niño May Return By Fall

 

Aurora Photos From Maryland, Delaware, and Virginia

Aurora Northern Lights April 23 Deep Creek Lake Maryland

 

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

 

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 when I need it and 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