Sunday Storm Slider Update July 12

Sunday Afternoon July 12 2020

We have ourselves a more comfortable day with respect to humidity, but it’s still hot. Plenty of stations reported 90ºF temperatures. Add in a cold front and there is enough energy to produce widespread showers and thunderstorms.

Radar Update (see below): As of this post at 3 PmM some showers developed on the west side of Baltimore. In PG County there is a cell that may reach Annapolis close to 4 PM. A larger cluster near Hagerstown and down I-81. The peak activity will be between 4 and 7 PM, but the chance for rain and lightning will continue through 11 PM.

I wanted to give you the tools to make your judgment call for your plans to stay out or head in early.  Below is a look at the satellite and radar loops.  Then two model simulation sliders. I feel like a broken record, but three models have underestimated the flare of up storms. They have verified a little earlier and more widespread. But here is a look at the timing for the germinal activity through this evening.

 

Satellite Loop:

Clouds have bubbled up in the past few hours and there is still a little more heating to feed into more storms.

 

 

Radar Loop

Time frame: 1:35 PM to 3 PM

 

Radar Snapshot at 3 PM

 

Simulations Starting at 4 PM

Here you can see there has been more activity one hour earlier that projected. But compare the models to see how they are behaving through the evening for your area.

HRRR Model —> slider

 

NAM 3 Km Model —> slider

 

Climate Report Today

Record Rainfall set in Baltimore at BWI

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

📋Observations yesterday

🌡 Climate data today

🗺 Weather Map

☀️ Sunrise and sunset times

🌙 Moon phase