Drought watch in effect! 8/16/10
Despite the flooding rains back in March of this year, much of southern New England, including Boston, has recently been classified under a drought watch by NOAA. The government uses a drought severity classification index, also called the Palmer Drought Index, to classify what level drought any particular area may be in. Although New England has been fortunate to receive some rainfall this summer, the overall trend since last April has been for monthly rainfall departures to be running less than normal. This, along with the abnormally hot weather we’ve been experiencing this summer, has entered southern New England on the chart, under the abnormally dry classification. The Palmer Drought Index, developed by Wayne Palmer during the 1960’s, uses temperature and rainfall to determine dryness in the soil for any particular area of the country. The index, which uses a five tier level of dryness, starts with D0, which just means your area is abnormally dry. If the drought persists, you enter into D1 category, or a moderate drought. From there, it turns into D2, which is severe drought conditions. If it turns into D3 level, your now in extreme drought. Parts of southern California is in this classification many times. If the drought persists for multiple seasons, your part of the country may fall under the dreaded D4 category, or exceptional drought. The southeast was under this classification a couple years back. So you can see, we’re not in a state of emergency just yet. However, if this trend were to continue, it doesn’t take long to climb up the ladder to the drier categories. All the more reason to go out and purchase a new front end loader washing machine, which uses up to 60% less water than top loaders do!
The last severe drought to hit southern New England, was back in the summer of 1995. This drought actually began during the dry winter of 1994-95. The dry conditions were exhasberatedby an exceptionally hot and dry summer, much drier than this summer! I distinctly remember all of the reservoirs and Jamaica Pond being excessively low that summer. Mother Nature eventually balanced herself out with the wicked winter of 1995-96. I remember the nor’easters starting in October that year, and not finishing up till April. And alot of them were snow! Hint of things to come? I’ll keep you posted on these prospcts in the upcoming weeks! Right now, the longer range outlook calls for continued dry and very warm conditions well into September.
Not much happening in the tropics right now, so we’ll just move on. Danielle can’t seem to decide whether she wants to become a storm or not. Time will tell.
Now for your weekly outdoor activity forecast. This week will once again feature some rapid weather changes. I will classifiy it as a 6 out of 10. You can’t be perfect every time! Even in a summer like this. Look for stubborn low clouds and fog to be persistant for the rest of your Monday. A warm front is tryng to push through the area, but is running into some resistance. There may be some showers around as well into this evening. Tuesday may dawn on the murky side, but skies should become at least partly sunny, and it will be noticebly more humid out. I can’t rule out an afternoon shower or thunderstorm in the muggy airmass. We may dry out on Wednesday with some sun, and temperatures in the low 80’s. As it looks right now, there may be some showers on Thursday, with cooler temperatures. Friday and Saturday may dry out and be on the pleasant side. As for Sunday, I wish I could say that we’ll be in the clear, but right now it looks on the iffy side. It could go either way. After that, the weather may be very nice for the following week, but I’m getting ahead of myself.
That’s about all the time I have for now. In my next blog, I will continue to monitor the Palmer Drought Index, and also talk about the last hurricane which hit New England (mostly Cape Cod) back in the summer of 1991. Until then, hang in there with some of the rapid changes coming this week, after all, we don’t live in southern
California!
Pete