Saturday, December 20, 2014

Rinse, repeat, flood watch

Random rains wring out 2-plus inches, nastier storms possible.

Rinse, repeat, flood watch

When the sun made an appearance this morning, the light re-animating  the lush foliage reminded us of just how deeply gloomy the last few days have been.

Unfortunately, on a day like this the concept of the atmosphere as an “ocean of air” feels like more than a metaphor.

An additional 2.5 inches of rain is possible this afternoon and tonight in some areas, and thus the National Weather Service has posted a fresh flash-flood watch for the region until 2 a.m.

Since Thursday morning, totals in parts of Montgomery County have approached 2 inches, with 2.5 measured in Palm.

The next round of storms, due to get underway in a few hours, could pack more sound and fury  as a cool front interacts with the saturated air.

The weather service is saying that an inch of rain in a 45-minute period would be enough to set off flooding if it happened to land on a place already inundated.

So far, no major flooding has been reported, although the Perkiomen Creek at East Greenville crested at just over 5 feet, about a foot above flood stage.

With all the clouds and rain, once again the official temperature won’t hit 90 this afternoon. As mentioned, this marks the longest wait for a 90-degree reading since 2003.

In records dating to 1874, this year ranks in the top 30 for the latest-occurring first 90-degree reading.

 

Tony Wood Inquirer Weather Columnist
About this blog

Everyone talks about the weather, and here we write about it.

When we’re around and conditions warrant, we’ll keep you updated about what’s coming, but we will do our best always to discuss weather and climate developments in context and remind you that nothing in the atmosphere happens in a vacuum.

Tony Wood has been writing about the atmosphere for The Inquirer for 26 years.

Reach Tony at twood@phillynews.com.

Tony Wood Inquirer Weather Columnist
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