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Flood watch details

Heavy rains due, but it won’t be April 30 redux.

Since the record deluges at the end of last month, the region's rivers and streams have resumed gentler careers.

And although as much as 2 inches of rain could fall tomorrow, and a region-wide flash-flood watch is in effect, stream levels are showing the effects of the bone-dry first half of May.

As of today, barely over a quarter-inch of rain has been measured this month officially at Philadelphia International Airport. That includes the basic nothing of this week, despite showery forecasts.

The National Weather Service says downpours from Friday morning could cause streams to slosh over, particularly if the heaviest rain comes in a compressed period, as happened on April 30.

But the crests outlooks aren't especially scary.

For example, the Schuylkill at Norristown is expected to crest at 11.7 feet Saturday morning; "minor" flood stage is 13. In Philly, the peak is forecast to reach 11 feet; or two feet below the minor flood stage.

Elsewhere, the forecasts crest for the Neshaminy at Longhorne is 5.3 feet; minor flood stage is 9 feet. For the Perkiomen at Graterford, the numbers are 7.3 and 11, and for the Assunpink at Trenton, 5.4 8.5.

The Brandywine at Chadds Ford is forecast to hit 8.8 feet, just under the 9-foot minor level.

Of course, in the run-up to the April 30-May 1 floods, the crest forecasts ended up being way underdone.

But two weeks later, the foliage appears to be far heartier and thirstier, and that should help.