PM Update: Showers on the Way Out for Evening?
A cloudy and sometimes showery weekend upcoming
* NatCast | Weather Trivia | Air Quality Awareness Week: Day 5 *
A sometimes gusty south wind helped temperatures climb into the mid-70s this afternoon even though the area was socked in with clouds through mid-afternoon. A few showers moved through during the early morning and again this afternoon. Though the risk is there for a thunderstorm or two through early evening, as with many recent west-to-east-moving systems, this one's just not packing a lot of punch after crossing the mountains.
Through Tonight: During the late afternoon into early evening, a couple showers and an isolated thunderstorm are possible along with some breaks in the clouds, but for the most part disruptions to the commute and evening activities should be minimal if at all. Late evening we trend mostly cloudy with just a slight chance of a passing shower. Temperatures won't fall too far; most places should drop to lows within a few degrees of 60.
Tomorrow (Saturday): More clouds and showers are likely Saturday as cloudy skies limit highs to the upper 60s to mid-70s. There may be a bit of a lull in shower activity during the morning, but by midday showers should be returning to the area with the chance of an afternoon thunderstorm. Rain through early evening could add up to between .1"-.25", with higher totals possible where heavier showers or storms occur.
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By Ian Livingston |
May 1, 2009; 3:30 PM ET
Forecasts
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Posted by: Dan-CapitalWeatherGang | May 1, 2009 5:31 PM
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The reason why we avoided thunderstorms today in the immediate D.C. area was not because the system didn't "pack any punch" as you phrased it, east of the mountains, but because of the same reasons that happened earlier in the spring.....the warm front didn't move far enough north, quick enough, to put us solidly in the sunshine and warm sector. We had overcast until the afternoon, and in addition, there was an upper-level inversion that prevented much convection even after the sun came out with the southerly wind. It limited the precip in the immediate region to only light showers.
Posted by: MMCarhelp | May 1, 2009 10:23 PM
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um... I think "not packing a lot of punch" was a pretty apt description for a public audience.
Posted by: Dan-CapitalWeatherGang | May 1, 2009 11:01 PM
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MMCarhelp, I don't think that's true. We were in the warm sector yesterday... clouds were mainly caused the the east moving trough. Either way, storms largely fizzled on the way in, thus lacked a "punch".
Posted by: Ian-CapitalWeatherGang | May 2, 2009 10:42 AM
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True, but even when we broke out in the clear in the afternoon, the inversion still kept the covective level down. NWS remarked on the strong inversion, and how it was only allowing light showers instead of the predicted thunderstorms.
What caused the inversion with a trough like that (which usually produces the opposite, with at least some instability) is a puzzler. I haven't figured out that one yet.
Posted by: MMCarhelp | May 2, 2009 2:34 PM
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Turning into a nice early evening so far!