Screen Shot2015-09-10 06_26_44With seven of the first nine days of September reaching the 90s, it was bound to get close to a record. The high of 94F at Baltimore’s BWI on Wednesday September 9th tied the record set in 1985. Now that we have that out of the way, the rain has moved in. Bands of rain this morning have wet the ground and might make traffic slow. More widespread rain this afternoon will likely make for a slow commute home. It won’t be all day rain, but a few wet hours will develop mid afternoon through evening. This could postpone after school sports plans. Disclaimer, I coach my son’s soccer team and rain or wet grass could be a factor for our league. Quite a contrast to the last two weeks of sweating in the heat.

Below are two separate simulated radar sliders. I wanted to compare the NAM/WRF Model to the HRRR Model. There is a slightly different solution, but both show the rain intensifying after 3 PM. The HRRR Model is a little later with heavy rain near and south of Baltimore between 5 and 8 PM.  Comparing to last evening, the bulk of energy will a little farther north. This puts central Maryland and southern Pennsylvania in the heart of the action. I hope this helps you prepare for your plans. Note, the second round of rain Saturday and dramatically cooler temperatures are still on the way as shown here.

Simulated Radar Sliders (—>)

NAM/WRF Model:

[metaslider id=28462]



HRRR Model

[metaslider id=28472]


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