Monday July 6 2020

The atmosphere is primed to dump a lot of rain on some areas today. The high temperatures in the 90s and dew points in the mid 70s would bee enough. But there is a boundary to our north once again trying to wobble south to act as a trigger.  But the availability of moisture and slow moving storms can lead to some areas with 3 to 4 inches of rain.

Severe Thunderstorm Watch and Flash Flood Watch

Severe Thunderstorms (pink shading): Storms may produce winds over 60 mph, large hail larger than a quarter, dangerous lightning, and an isolated tornado.

Flash Flood Watch (green): Slow moving storms may produce over 2 inches of rain per hour with totals up to 4 inches in some spots.

July 6 maryland weather severe thunderstorm flood watch


WPC Outlook

The initial risk for Flash Flooding was forming around Philadelphia. The expansion into northeastern Maryland and New Jersey.

  • Chance for 1″/hour  rainfall = 90%
  • Chance for 2″/hour  rainfall = 40-60%
  • Isolated areas 3″+/hour rainfall

July6 Storm Discussion NOAA WPC


Storms Erupted Early

Doppler Radar Snapshot

Storms formed around metro Philadelphia shortly after noon. They seemed to blossom in place and spread Southeast. This is one of the complexes expected to drop southward into Maryland in a few hours.

July 6 weather storm radar phildelphia flooding


Regional Radar Loop



Satellite Loop

Watch the explosion of clouds near Philadelphia. In the last few frames you can see the development of clouds moving south in New Jersey towards Delaware.

As the cloud tops grow higher, the upper level winds will steer the system to the south and southwest.

The next few hours the complex will drop into our region.


Wind Forecast

Convergence is when two opposing air forces meet up in the atmosphere. This is the boundary we will see move our way into the evening.

July 6 maryland weather wind storm flooding set up Monday


Radar Simulations –> Sliders

Nether of these models are perfect. The timing is off between them and both were slow with the Philadelphia development.

*Both DO SHOW CONVERGENCE OVER MARYLAND: That complex dropping into Maryland along with some storms moving in from the west. Where this meets up there will be extremely heavy rain that can last a couple of hours. That is where the fooding will develop.

This should continue to move south into southern Maryland tonight, and gradually weaken after the sun goes down.

HRRR Model

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NAM 3Km Model

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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 6 moon phase

📋Observations yesterday

🌡 Climate data today

🗺 Weather Map

☀️ Sunrise and sunset times

🌙 Moon phase


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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.

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


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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

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