Low pressure, that has cut itself off from the main upper air flow pattern, will drift lazily north and northeast through the coming 24 hours. Currently over the Virginia’s, this area of low pressure is forecast to be over the mid Atlantic states Thursday morning, and then to lift northward, and pass over the Capital Region by Thursday evening. With the passage of the low pressure area, the jet stream pattern will shift, taking on a trough configuration over the northeastern United States. This is as opposed to the ridge that was in place over the past week.
Several disturbances, associated with the jet stream, will be sent through our region in rapid fire succession beginning on Friday, and culminating with the passage a strong cold front early on Mother’s day. Showers and perhaps a thunderstorm or two will be commonplace as we close out the work week and head into the weekend, though it will likely not be raining all the time.
Temperatures will start out the forecast period above normal, trending to near normal toward the end of the period. Rainfall amounts look to come in near normal. The one positive note with all the chances for precipitation coming up is that the ground and soil are desperately in need of such moisture.
…Below is the official forecast for the Capital Region and vicinity…
Today: Increasing, thickening, and lowering clouds with a good chance of showers and/or a thunderstorm during the afternoon. High near 70. Southeast winds 5-10 MPH. Chance of rain is 60 percent.
Tonight: Evening showers and perhaps a rumble or two of thunder yielding to areas of patchy drizzle overnight. Low near 55. Light and variable winds. Chance of rain in the evening is 50 percent.
Thursday: Intervals of clouds and sunshine with a chance of showers and/or a thunderstorm. Small hail is possible in the vicinity of any shower or thunderstorm activity. High near 70. Southerly winds 5-10 MPH. Chance of rain is 60 percent.
Thursday Night: Variably cloudy. Low near 55. Light southerly winds.
Friday: Mostly cloudy with a chance of scattered showers and perhaps a thunderstorm. High near 70. Variable winds 5-10 MPH. Chance of rain is 40 percent.
Saturday: Mostly cloudy with a 50 percent chance of showers. High near 70 and low near 50.
Sunday: A 30 percent chance of morning showers and possibly a thunderstorm. Otherwise, gradual clearing and becoming breezy and cooler. High near 65 and low near 40.
Monday: Partly sunny and breezy with a 30 percent chance of a shower. High near 60 and low near 40.
Tuesday: Mostly sunny. High near 65 and low near 40.
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