Sunday Evening Update

April 12 2020

The High Wind Warning has been expanded to include parts of central Maryland west of the Chesapeake Bay on the south side of Baltimore. In this post, I wanted to share some notes on what we expect, advice to prepare, some new maps, and the wind forecast.

The Warning (gusts likely to 60 mph) now includes: Anne Arundel, PG, Charles, Calvert, and St. Mary’s Counties, along with Delmarva and the mountains in the west.

The Advisory (gusts to 50 mph) remains for most central areas and Cecil County in northeastern Maryland.

But the forecast models support stronger winds for a larger area, so all of us should take this seriously.

What does this mean?

Here are a few points I wanted share to prepare before heading to bed tonight:

I don’t want to scare, just help you prepare. Please take note of these points.

⚠️ The Wind Storm Monday is the real deal! 

💨 Wind Gusts could reach 50-70 mph for a large area. (see maps below)

🌪 Tornados are possible but NOT a promise. Wide spread wind damage can occur without a twister.

Two rounds of storm expected on Monday. 

  •        1st between 4 AM and 8 AM
  •        2nd between Noon and 4 PM

Storms are classified as severe if they:

  • Winds exceed 58 mph
  • Hail over 1 inch diameter
  • Potential Flooding: Heavy rain could produce over 1 inch per hour rainfall rates.

⚡️Power Outages are possible. Plan Ahead:

  • Charge up all of your devices this evening. Including all battery packs you may have. 
  • Take put your batteries and flashlights. 
  • If we lose power in Quarantine- That might not be fun! Parents, have some plan ready for your kids. 

🌳🏠 I hope you took some time to tie down potted plants and outdoor furniture or just bring them inside. A lot of things will be blowing around.

🏥 Popup Hospital Tents in cities all across the Northeast may become dangerous.  

🙏🏻 Pray! It’s Easter and Passover. We could use all the help we can get keep people safe.



Set Up Sunday Evening

The severe storms in the Deep South will continue to rage this evening and tonight. The remnants of the storms will arrive early Monday. That will be round 1. The actual cold front will develop more storms for Round 2 in the afternoon.

We will NOT get the snow in the Upper Midwest, but the cold air could bring us snow Wednesday morning



Wind Timeline-> slider

  • Wind Speed is measured as an average of 1 minute up tp 10 minutes. That is what is shown here.
  • Wind Gusts are maximum bursts between 3 and 20 seconds long. Gusts are higher, but last less time.
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Peak Wind Gusts (Forecast)

This forecast is higher than criteria for the Wind Advisory and can result in more damage. Wind gusts may not be this widespread at this intensity, but some areas could reach these destructive levels.



Severe Storm Risk Monday


Storm Animation

We need to watch the storms move our way overnight, then new storms form in the morning.

  • The severe storms in the south today may hold some integrity overnight and reach us with one round in the morning. We could have severe storms with damaging winds between 4 AM and 8 AM.
  • The second push will be with the actual cold front in the afternoon. That is when the strongest winds and large hail is possible. The expected in metro areas will be between Noon and 4 PM.


Monday Afternoon


Tuesday Morning


Wednesday Morning Snow?

This is the GFS Model plot, but it is showing up on most models… at least as wet snow or a mix into central Maryland.



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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


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


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