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Posted at 04:40 PM ET, 09/02/2011

PM Update: Humid weekend, storm chances grow by Labor Day

Considerable cloud cover today held temperatures in check, mostly below 80 degrees. But a warm, humid airmass is in place so more sunshine this weekend should give temps a boost, pushing us well into the 80s to even near 90 by Sunday. A front very slowly edges into the region, offering a chance of storms Sunday and especially as Labor Day progresses.

Through Tonight: Lots of clouds tonight and a bit humid. As a result, temperatures won’t fall much, with lows in the low 60s in the cooler suburbs with upper 60s downtown. Like last night, can’t entirely rule out a thundershower, especially to the west and northwest (10-20% chance)

Tomorrow (Saturday): We should have more sunshine than today, allowing temperatures to break through today’s resistance around 80 degrees, probably reaching into the mid-80s. You’ll also notice a fair amount of humidity. Thunderstorm chances late in the day are just 10-20%, with the highest odds towards the mountains. Partly cloudy and muggy Saturday night, with lows in the mid-60s to low 70s (suburbs-city)

Sunday and Labor Day: Southerly flow both days mean humid conditions. On Sunday, the mercury makes a run at 90 degrees with a 30% chance of p.m. storms. On Monday, highs top out in the low-to-mid 80s with a 40-50% chance of storms, particularly towards evening.

See Camden Walker’s forecast through early next week. And if you haven’t already, join us on Facebook and follow us on Twitter

Pollen update from Walter Reed: Tree poll is LOW but weed and grass pollen are MODERATE.

Outer Banks before and after Irene: The USGS has posted a series of before and after aerial photos of the Outer Banks showing the impact of Irene there, highlighting several breaches that severed a state highway and moved large volumes of sand inland.

Potential for heavy rain event Tuesday-Thursday next week: Heavy rains are possible in the D.C. metro region in the middle of next week as the remnants of tropical storm Lee get absorbed into a stalled front over the area. The European model simulates 3-6” of rain and the GFS model 2-4”. Higher amounts are projected over the mountains. As there is considerable uncertainty in the timing, track and intensity of Lee, this is a low confidence forecast. Stay tuned for updates.

By  |  04:40 PM ET, 09/02/2011

Categories:  Forecasts

 
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