June 30 Weather Humid With More Storms That May Turn Severe Through Tomorrow Then Pleasant Holiday Outlook

Monday, June 30 2025

Morning Report

The edge of the humid weather remains in place, and with a stalled boundary, there may be another round of slow-moving storms. Yesterday, this led to wind damage and local flooding. It is possible to sprout again today. The specific locations are tough to pin down, so it is worth watching closely as this develops.

The peak of the severe storms is expected to be tomorrow. NOAA has posted an excessive rainfall outlook that means we may need to stay on alert for flash flooding.

Then we get back to seasonal hot afternoons, but a more stable and dry setup to end the week. The July 4th holiday is looking sunny, seasonably hot, and dry!

Amazing Video

Tim Grooms captured the downdraft and possible microburst in the storm over Southeast Baltimore on Sunday.

Storm Reports Sunday

Wind Damage focused on Southeast Baltimore County. This included Dundalk, Essex, and Bowleys Quarters. There was also a cluster of severe storms in Southern Delaware to the beaches.

Morning Surface Weather

A nearly stationary front is still draped over Central Maryland. This may once again provide a focus for scattered, slow-moving, very strong storms.

The humidity will help it feel like 100F and fuel these storms in the afternoon heat.

A strong cold front will arrive tomorrow with a strong line of severe storms. Behind it, a new air mass will bring less humid air into the holiday weekend.

Storm Simulation: Monday to Wednesday

• Pulsing Rain in the afternoon and evening
• Peak Heavy Rain Tuesday Evening
• Wednesday: Dry And Less Humid

NOAA Severe Storm Risk

A chance for a thundershower to grow to severe levels, which may include:

• Damaging Wind Gusts
• Large Hail
• Isolated Tornadoes

Any storm may contain dangerous lightning and local flash flooding.

TODAY

TOMORROW

Live Radar and Lightning Widget

Radar Simulation: Noon to Midnight

This is a SUGGESTION, NOT A PROMISE.

Low confidence CONTINUES in this product with the setup. Scattered showers and thunderstorms may pop up at any time in the afternoon heat and settle down in the evening.

4 PM

6 PM

8 PM

Afternoon High Temperatures

As we reach the lower 90s, it will ‘feel’ close to 100°F.

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CLIMATE DATA: Baltimore

TODAY June 30

Sunrise at 5:44 AM

Sunset at 8:37 PM

Normal Low in Baltimore:  66ºF

Record 52ºF in 1988

Normal High in Baltimore: 88ºF

Record 100ºF 1945; 1959

Rainfall Deficit at BWI

• Ending 2024 =  -8.00”
• Since Jan 1 =  -2.00”
• We are STILL DOWN -10.00” INCLUDING LAST YEAR

TUESDAY

Morning Low Temperatures

Afternoon High Temperatures

Radar Simulation: Noon to Midnight

Suggestions NOT a Promise. Use this as a general idea for timing, and that there will be a very strong line of storms.

Snapshots

4 PM

6 PM

8 PM

7 Day Forecast

• Today: Hot and Humid; Scattered T’showers
• Tuesday: Strong Storms and Possible Flooding
• Wednesday to July 4th Weekend: Sunny, Hot and Less Humid

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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