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Posted at 3:15 PM ET, 06/ 4/2009

PM Update: Rain, and Lots of It, Through Friday

By Ian Livingston

Flooding a concern through Friday; Weekend looks fine

* Flood Watch Through Tomorrow Afternoon | Weather Wall *
* NatCast | UnitedCast | Yesterday's Storm Recap *

What a difference a day (and a strong cold front) makes. Yesterday we were dealing with summerlike humidity and thunderstorms; today we see chilly temperatures only rising to the low 60s as a winterlike storm system takes shape. Rain, mostly light to occasionally moderate, has arrived in parts of the area and will continue off and on through the evening before more in the way of solid activity arrives overnight.

Radar: Latest D.C. area radar loop shows movement of precipitation over past two hours. Powered by HAMweather. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Through Tonight: After off-and-on, light-to-moderate rain through evening, steadier and sometimes heavier rain will fall overnight as a storm gets organized to our south and heads this way. Some thunder is possible. Lows will be fairly uniform, mostly in the mid-to-upper 50s. By morning, much of the area should have seen at least .50-1.00" of rain, with a good chance that some places get more.

Tomorrow (Friday): The morning commute could be an ugly one as a coastal low provides more in the way of rain, sometimes moderate or heavy, through the morning and into the day. Highs should reach the low-to-mid 60s. By late in the day, rain should begin to wind down, but showers will still be possible through evening. Up to another inch or so of rain could fall on Friday, bringing some two-day totals up to between 2" and 3".

See Josh Larson's full forecast through the beginning of next week.

Bow echo passes Washington at 3:24 p.m. on June 4, 2008. Courtesy Weather Underground.

1 Year Ago: While yesterday's storminess was pretty intense for this area, it was minor compared to what we saw a year ago today. An historic severe weather outbreak was underway at this time, causing nearly 100 individual damage reports, as well as leaving hundreds of thousands in the dark across the area. Though the first round, classified as a derecho, was the most intense area-wide, several waves of storms (including tornadic ones) swept through, leaving few places completely untouched.

By Ian Livingston  | June 4, 2009; 3:15 PM ET
Categories:  Forecasts  
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Next: Natcast: Damp but Not a Rain Out


Here is a link from The Free Lance-Star newspaper regarding the fatal lightning strike in Fredericksburg:

Very tragic and sad....

Posted by: david_in_stafford | June 4, 2009 4:01 PM | Report abuse

Posted by: eheadwest | June 4, 2009 9:18 PM | Report abuse

Tonight's weather news:

Unusual weather continues in the Pacific NW and Alaska, with heat and some thunderstorms. There's still a deep closed low, unusual for this time of year, off the Pacific coast. The jet stream out there is also split, as in an El Nino regime.

Closer to home there's some indication our heavy rainfall may SLOWLY taper off from west to east from noon tomorrow on.

The weekend break may be short with another of these messy stationary boundaries setting up shop next week.

According to David's Fredericksburg post, the weather was rather clear at the time of the fatal lightning strike...could it have been one of those relatively rare, super-powerful "positive" strikes of the type which can travel miles from the parent cloud? Earlier reports seemed to suggest that the storm was approaching while the boys were playing catch in the outfield. Lightning is still under-rated as a killer, and often not adequately warned about in severe weather bulletins. In fact severe weather is NOT necessary when lightning danger is present. Any ordinary thunderstorm can become a killer.

There's still a lot of snow on Pikes Peak. They got over a foot the other night.

June 4 marks the 51st anniversary of the Colfax, WI tornado outbreak, and the first anniversary of last year's big derecho around here. Both these storms traveled at approximately 50 mph and struck with sudden swiftness.

Posted by: Bombo47jea | June 4, 2009 11:58 PM | Report abuse

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