Tuesday July 21 2020

We are turning the corner in this heat wave today It will still be hot, but likely staying below 100ºF in Baltimore this time.  By dropping the thermometer a little, the Heat Advisories have been issued for less area, just based on the heat index expected this afternoon.

We also expect more widespread strong storms, and some may turn severe tonight. The one good thing is that there could be a few hours of rain after dark, which the vegetation desperately needs. Check out the radar simulation below.

We will have a few days with more storms, but temps will get lower and the region should see an improvement for the weekend.

Heat Advisory

July 21 maryland weather heat advisory


Satellite Loop



Morning Temperatures 

Starting the day in the 80s by the beaches and lower Eastern Shore. This is where the Heat Advisory is in effect today. Lower to middle 70s inland is a little better, but still will be uncomfortable.

July 21 maryalnd weather temperatures Tuesday morning

Afternoon Weather

July 21 maryland weather high temperatures Tuesday


Radar Simulation —> slider

Note: This product is a guide, but far from perfect! This has underestimated the storms coverage in areas and missing some earlier cells. It has also been a little south of where they verify. But if gives us an idea what may develop if we apply those errors.

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HRRR Model
This shows the storms a little earlier and farther north in PA
July 21 storms Tuesday Evening HRRR

Climate Report Today

Record Rainfall set in Baltimore at BWI

See the Weather Observations and Climate Report from this morning for more info about:

July 21 moon phase Tuesday

📋Observations yesterday

🌡 Climate data today

🗺 Weather Map

☀️ Sunrise and sunset times

🌙 Moon phase



Email Updates

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Wednesday Weather

A cold front will move closer and bring a higher chance for severe storms.

July 21 maryland weather low temperatures Wednesday


July 21 maryland weather high temperatures Wednesday

July 21 storms Wednesday NAM 3 Km Evening


Storm Outlook

Showers and storms will be more widespread through Friday. Then improving this weekend.




Temperature Outlook 

The drop in temps to the near 90ºF at BWI, means 80s in the suburbs. That would be an improvement.


July 21 maryland weather temperature outlook



That will be tough to challenge with some of the hottest already set on those days

July 21    104ºF in 1930   
July 22    106ºF in 2011   
July 23    102ºF in 2011+



Also See:

Comet NEOWISE Viewing All July (photos/video)

Comet NEOWISE Bob Gelety

Maryland Strong Love ❤️ 

My ‘bonus’ daughter made this map of Maryland a few years ago. We brought it back for needed positivity. Now on her pick of tanks, and this cool Maryland T for men or women.

Click here or on the image to see more

This is all LOCAL: Made by Maryland Print House; Proceeds support my Maryland Trek 7 this August for Just In Power Kids.




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


Maryland Trek 7 

This will go on this August! Let’s hope social distancing will be a memory then. One way to celebrate would be to become part of my team:

  • Consider joining our team for the week, a single day, or even as a sponsor.

Maryland Trek 7



Water Spout OR Scud Cloud on videos and photos near Middle River Maryland


Other  Links:

Was Your County Not Included?

Click this map for more on the regional forecast zones


Baltimore Weather At BWI May Not Be As Hot As Reported

Construction at the airport close to the weather station may be added artificial heat. Click here or the image for the details.




Maryland Trek Cycle Jerseys From Hill Killer

All proceeds will go to the Maryland Trek 6 total and Just In Power Kids programs

Thank you to our Title Sponsor for Maryland Trek 6

Shining on with Smyth and their contribution, our team has raised over $100,000 for Just In Power Kids to provide free programs for kids in and post cancer treatment.

Just In Power Kids:

Proceeds go to our programs Providing FREE holistic care for kids in cancer treatment and up to 5 years post treatment and caregivers.


Shine On

Proceeds from all sales go to Just In Power Kids. Click the image to shop and show your support.