Alert archive / Pennsylvania / Areal Flood Advisories in 2009

Areal Flood Advisory 63, NWS Philadelphia/Mount Holly

August 13, 2009Chester County, Pennsylvania; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this areal flood advisory at Aug 13, 2009, 2:58 AM EDT for Chester County, Pennsylvania; New Castle County, Delaware. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 13, 2009, 2:58 AM EDT (06:58 UTC)
Expired
Aug 13, 2009, 5:32 AM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties New Castle County, DE, Chester County, PA

The radar

The Dover AFB radar (KDOX), 108 km from the middle of the area, began a volume at 07:01 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 12, 9:12 PM EDTSpecial Marine WarningPHI28 min
Aug 13, 3:36 AM EDTFlood WatchPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more36 min
Aug 13, 4:12 AM EDTFlash Flood WatchPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more15 hr
Aug 12, 8:54 PM EDTFlash Flood WarningPHICarbon4 hr
Aug 12, 10:33 PM EDTFlash Flood WarningPHICarbon, Lehigh, Northampton4 hr
Aug 12, 10:42 PM EDTFlash Flood WarningPHIBerks4 hr
Aug 12, 11:23 PM EDTFlash Flood WarningPHIBerks, Lehigh, Northampton7 hr
Aug 13, 6:01 AM EDTRiver Flood WarningPHIChester5 hr
Aug 13, 9:13 AM EDTRiver Flood WarningPHIChester, Delaware5 hr

Nearby

Areal Flood Advisories in Pennsylvania, 2009Areal Flood Advisories in Delaware, 2009Every areal flood advisory in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.