Next Week’s Weather Not Looking Good Active Pattern
With the weekend looking good for a three day stretch (Friday through Sunday) we don’t see any reason to change the forecast at this point. High pressure from Canada will force dry air southward and keep things nice and reasonable Friday and Saturday. Northeast winds will keep temperatures reasonable as well with highs mostly in the 70s with lower 80s inland and west of the coast. Other than patchy clouds we see no rain issues through Sunday. Speaking of Sunday we will have to watch to see whether the onshore flow moistens a bit to allow clouds to develop. High clouds will be inching up from the south and some low level moisture might add to the mix later in the day Sunday especially along the coast but we still believe Sunday should be okay and no rain issues are indicated.
Next week brings a rather active pattern to the forefront. All that moisture in the south has to go somewhere. The high from Canada will hold it in the Middle Atlantic, Southeast & Gulf states but eventually the high does give way. The upper pattern is bringing the trough into the Eastern US for much of next week and this will be the driver to bring rain northward Monday into Tuesday.
The pattern is blocky which has those two upper lows locked up for a few days. The vortex in Canada sends an arm around which takes the southern moisture and brings it up the coast. Rain will be developing on Monday and since this is a time of year when systems move slowly we will probably see rain last into Tuesday until a weather front goes by. A second wave also prolongs the wet conditions. Im not sure whether the rain will be continuous but there will be some heavier downpours in the mix.
The blocky nature of the pattern allows a second trough to drop in behind the first on Tuesday. It extends from the upper low in Central Canada southward into the Middle Mississippi Valley. This could keep the frontal boundary close to the coast and bring up a couple of more waves Wednesday into Thursday with more rain. If that second trough is weaker than perhaps we could see the front push further south sparing us additional rain issues but right now the GFS and European seem to have the same idea here.
Weather models are bullish with rainfall amounts of several inches along the coast with lesser amounts inland. Models are especially bullish an the Middle Atlantic & Southeastern US with several inches or more forecast. This will need to be fine tuned as we get closer. The good news is that after the second system the trough does pull out and a more westerly flow of air should bring improvement late next week and hopefully in time for the Father’s Day weekend.
MANY THANKS TO TROPICAL TIDBITS FOR THE USE OF MAPS
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