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Indoor Plans This Weekend, Right? Wait!

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Rain, rain, and more rain. When will it end? Earlier this week I made mention of a possible sun sighting on Friday. It happened a few times. Now, we wonder when a day will come along with complete sun. We may have to wait until next week to experience such a privilege. However, a weak and short lived ridge of high pressure should deliver decent weekend weather.

Saturday is going to be better than Friday. We will wake up to an awesome sunrise with morning temperatures in the low 50′s. Later in the day, dew points will be between 55 and 60, so expect a bit of humidity in the air. Temperatures will peak around 75 degrees in the afternoon. Get ready for a day that finally feels like early summer! Skies will be partly cloudy and although there is a slight chance for a shower or weak thunderstorm in the afternoon, don’t cancel plans. The chance is minimal.

Sunday will begin with temperatures around 50 degrees. Yes, it will be chilly to start. Skies will be partly cloudy with high temperatures peaking in the upper 60′s. Enjoy your weekend!

Remember the Nice Weather? Last week?

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Modeled Pattern at 2pm 5/18

Think back to last week. Sun. Warm temperatures. Whoa! Look how things change! We are now stuck in a dreadful, cloudy, and wet pattern. The same pattern that gave us a prolonged period of sun last week is now giving us a prolonged period of dreariness this week. It’s called an Omega Block.

Look to the image on the left. The blue shading represents the approximate location of the jet stream (fastest moving winds high above the ground). This is the model forecast for Wednesday, 5/18. You can wave to the big blue “H” over the open waters of the Atlantic Ocean. The nice weather we experienced last week was all as a result of the “H.” Sadly, it’s now pushed to our East. It took it’s sweet time getting there, too.

Now, we are under the influence of the Western side of this “Omega Block” pattern. The black circle centered over Pennsylvania indicates an upper level low pressure system (also marked by the red “L”) that has “cut off” from the main flow. That is, it’s not being carried by the fast moving winds (blue shading).

So, until the latter half of this weekend, we must continue to deal with the effects of this “cutoff low.” Expect times of clouds and times of rain. However, I will say that by Friday, we have the chance for at least a few peaks of sun. The statement sounds dreadful, but it is true. Saturday brings a better chance of sun, and by Sunday, we will be seeing mainly sunny skies with temperatures in the 70′s.