Beware of August…7/29/13
We are nearly two thirds through meteorological summer, and so far, it has been everything as advertised here in New England. Boston has reached 90+ degrees 17 times so far this summer. This is three more times than an average summer. In addition, despite most of July being on the dry side, recent downpours have continued the trend of a wetter than normal summer around here. Speaking of rain, I would like to apologize for the unexpected turn to rather cold and rainy weather at the end of last week. Looking back at my forecast, I certainly didn’t say that was going to happen! With all of the technology at are disposal these days, Mother Nature still holds the upper hand at the accuracy of forecasts, especially after 3 days. Sometimes the weather changes so rapidly, that once I publish a forecast, it already has changed!
Speaking of change, last week certainly had its share of that! I found it fascinating how we transitioned from record hot temperatures of near 100 degrees back on July19th, to nearly 40 degrees cooler just one week later! In between we experienced a cloud burst of rain of biblical proportions back on Tuesday. It was then, and only then, that the cooler, drier air finally penetrated the area. It just showed me just how strong that Bermuda ridge of high pressure really was. The heat wave was supposed to break last Saturday on the 20th. All models showed a strong cold front plowing into the heat generating a line of severe weather and torrential downpours.
So what happened? As the front pushed south, it was becoming more evident as the day went on, that the front was fizzling out. Yes, it did bring a drop in air temperature, which fell from the 90’s to the 80’s. However, with the front just washing out across the area, the humidity never really left! It took more energy from the northern jet stream to slam into the ridge to beat it down and finally push the cool air in here. It was on Tuesday, when another piece of energy finally ignited tapped into the deep levels of humidity across the area, resulting in the torrential downpours. After that system moved out, cooler and drier air was finally able to filter into New England.
So what’s August looking like this year? Does this cooler weather signal the end of summer? I don’t believe so. What I do believe is that this is summer’s half time break. In fact, if you are not a fan of an early fall chill, which I know my sister is not, you may want to skip this portion of the blog! I believe we are in for quite a changeable month of August this year.
First, we must face the facts. August is a month when we begin to lose sunlight on a daily basis. With the sun angle lowering, this allows cooler air to begin to pool across the Noth Pole. It doesn’t happen avery year, but sometimes, if a strong enough ridge builds out in the western part of the country, a deep trough digs into the eastern half of the country, sending a shot of unseasonably cool air into our area. To some degree this looks like it’s going to happen this week, with a couple chilly nights. Next week, however, we really may be reaching for an extra blanket at night, with some lows possibly dipping into the 40’s!
So, is that it? Will this be the beginning of fall, sending us into a bitter cold winter? I think not! After the cold shot to bring in August, there are many signs that summer part II will be arriving. It may not get as hot as it did in July, but it certainly may get just as muggy. We may even squeek out another heat wave in the process. Here’s where it gets interesting. We will be moving into the peak of hurricane season. In addition, our ocean temperatures will be reaching their maximum. What this means, is that in the end, that Bermuda High will be the culprit that does us in. I believe that at the same time the Bermuda High builds towards us during the second half of August, is where we need to be on gaurd for a hurricane roaring up the coast striking New England. It will be a month of extremes, one that will be remembered for possibly record cold, terrible humidity, then possibly a hurricane!
Before I get to my forecast, I did want to update everyone with the tropical update. We have been following the fourth named storm in the Atlantic named Dorian. Dorian has been battling wind shear and dry air, basically inhibiting the storm from strengthening. Over the next couple of days, this may change, as it moves into a more favorable environment for development. If it survives, we still need to monitor some impact from Dorian in the Bahama’s, then possibly the southeast coast of the United States. Later, this moisture may eventually get absorbed in a cold front and affect New England. As stated above, look for the tropics to quickly become active as we move through August. The next named storm after Dorian will be Erin.
Now for your weekly outdoor summer vacation and activity forecast. I will rate this week another 7 out of 10. Look for clouds and a chance of a quick shower or thunderstorm for the first part of this afternoon. It will also be on the muggy side, with highs near 80. Then watch for a northwest wind to pick up later this afternoon, bringing with it clearing skies, and drier conditions, making for a pleasant evening. Open the windows tonight, and let the cooler and drier air filter through the house, lows will drop into the 50’s in rural areas and lower 60’s in the cities.
Expect fantastic weather for tomorrow and Wednesday, with low humidity, and sunny skies. High temperatures will be in the lower 80’s both days, and lows will be in the 50’s and lower 60’s. One thing about Wednesday, there may be some decorative high clouds ahead of the next system, so it may not be totally sunny. It should be dry Wednesday evening for outdoor activities.
For Thursday, expect cloudy weather, and showers will likely be moving in during the late afternoon. It still may make it to 80, so it shouldn’t be too cool. Expect rain for Thursday night into the first part of Friday. Thereafter, clouds may break later in the day. It will be cooler, with highs mainly in the mid 70’s.
Right now, there may be another system coming through on Saturday, with clouds and some sun, and maybe a few showers, this does not appear to be a washout by any means. If this system moves out as expected, Sunday should turn out to be a beautiful day, with sunshine, low humidity, and highs near 80.
Well that’s about it for now! In next week’s blog, I will be monitoring the early season cool shot coming our way, and will let you know just how chilly it will get! I will also begin to closely monitor the tropics and have your new tropical update. I will also have your latest summer vacation forecast. In the meantime, remember that big storms have come and gone. We just move forward. Do we have a choice?
Thanks for reading,
Pete