Severe Thunderstorm Watch Until 9 PM Friday May 29

Friday May 29 2020

The heat and humidity have already develop strong and severe storms in our region. More are in the way. This was expected (see my morning report), but now we have a Severe Thunderstorm Watch that includes northern Maryland and much of Pennsylvania until 9 PM. Some of the storm cells are expected to reach limits to bring damaging winds, large hail, and an isolated tornado.

Here is a look at the surface map, satellite and radar loops, and radar simulation model to use as a rough guide. But first,

Severe Thunderstorm Watch

• Watch means it might happen; Warning means it is happening NOW!
• Winds over 58mph = the biggest threat
• Hail over 1 inch (size of a quarter)
• Tornados may develop, but should be isolated.
• Flash Flooding
• Dangerous Lightning

Afternoon Weather Conditions

Surface Weather Observations

Note the cooling with the storms in the west. Also the wind flow. As I mentioned this morning (and many other times), when there is a southeast wind near the Bay, it can enhance storms east of the mountains.

Satellite Loop

Radar Loop

Radar Snapshot

I need to point out that the image here is at 3:45  PM. This has the storms over Frederick and into Carroll Co MD and into York County PA. This at least 1 hour sooner than the best short range model simulation below.

The outflow boundary is a signal of the colder air being pushed ahead of the storm. You may see a shelf cloud and this could spawn a new line of storms.

I’ve identified the movement of the individual cells and the entire line.

Radar Simulation —> slider

This model is already wrong…. Lagging in time. I want to show you how it develops the storm. But with a timer frame 1 to 2 hours sooner, we may see both the arrival for your area sooner AND more robust in metro areas.

Email Updates

Please make sure you sign up (above or  click here to sign up for email alerts…. ) for my newsletter. This way you will get an email to make sure you are notified of each post.

 

Other Posts You Might Enjoy

Video Collage of Blue Angels and Thunderbirds Flyover Saturday

 

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

• Facebook: Justin Berk, Meteorologist

• Twitter: @JustinWeather

• Instagram: justinweather

 

2020 Tropical Storm and Hurricane Names and Naming History

 

Atlantic Tropical History: Maps of Origin Regions Every 10 Days

Atmospheric Memory Of Hurricanes Over Thousands Of Years Shaped The Coast

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.

 

 

Was Your County Not Included?

Click this map for more on the regional forecast zones

 

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.

ALSO SEE: 

Two Tornados Confirmed in Maryland Monday April 13

 

Wednesday Storms Across Maryland: Hail Video/Photos, Lightning, and Tree Damage

      

 

 

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

Other  Links:

When is the typical last freeze or frost?

See more here

 

 

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 $95,000 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.