Thursday June 4 2020

Here we go again. The atmosphere is primed to produce severe thunderstorms today, with the focus shifting to the more densely populated central Maryland and Washington DC areas. The most severe storms will be towards evening, but thundershowers will last behind midnight.

The main risk will be damming winds, dangerous lightning, and flash flooding. But some spots will get large hail over 1 inch diameter, and an isolated tornado is possible.

Alert Reminders: A Watch means it may happen; A Warning means it is happening now!

Severe Thunderstorm Watch

Severe Thunderstorm Watch Thursday evening June 4


Doppler Radar Loop
3 Hours Ending at 3:25 PM



Afternoon Conditions

Temperatures have reached the upper 80s and lower 90s.

Winds from the Southeast tend to enhance the storm risk. This adds moisture and uplift from the Bay- inland.

June 4 maryland weather condtions 3 PM


Limitation With Short Range Models

The HRRR Model has done the best job lately, but it does miss some things. Here is a look at the forecast for 3 PM. Compare to Doppler Radar at that time and see the absence of the storms already brewing.

Why show this? Because it is the best guidance we have. But view the missing early storms, it can be expected that the eruption we will get may be more widespread. The timing should be pretty close to plan on.

June 4 Severe Storm Radar 3 PM Thursday


June 4 Doppler Radar 3 PM


Radar Simulation This Evening —> slider

This should perform better. Note the timing for metro areas and the extended rain past midnight.

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See More:
June 3 Derecho Storm Report Map

Climate Report Today

To date, this is still the second coldest May on record in Baltimore.

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

June 4 moon phase

📋 Observations yesterday

🌡 Climate Today

>🥶 Record Low Tied Last Year<

🗺 Weather Map

☀️ Sunrise and Sunset Times

🌙 Moon Phase


Was Your County Not Included?

I wrote this to explain the NWS forecast zones. In November 2020, Cecil County will be switched to join the rest of central Maryland under NWS Sterling VA Office command.

Click this map for more on the regional forecast zones

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