Flash Flood Warning 64, NWS Philadelphia/Mount Holly

Issued

Sep 1, 2021, 6:49 AM EDT (10:49 UTC)

Expired

Sep 1, 2021, 8:15 AM EDT

In force

86 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

Counties New Castle County, DE, Chester County, PA, Delaware County, PA, Philadelphia County, PA

The Philadelphia radar (KDIX), 91 km from the middle of the area, began a volume at 10:52 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.

177 
WGUS51 KPHI 011049
FFWPHI
DEC003-PAC029-045-101-011215-
/O.NEW.KPHI.FF.W.0064.210901T1049Z-210901T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
649 AM EDT Wed Sep 1 2021

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Northern New Castle County in northern Delaware...
  Southeastern Chester County in southeastern Pennsylvania...
  Delaware County in southeastern Pennsylvania...
  Southwestern Philadelphia County in southeastern Pennsylvania...

* Until 815 AM EDT.

* At 649 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts of 0.5 to 1 inch are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets, and underpasses as well as other
           drainage and low lying areas.

* Some locations that may experience flash flooding include...
  Philadelphia, Camden, Wilmington, Newark, Chester, Pennsville, 
  Yeadon, Westtown, Carneys Point, Folcroft, Swarthmore, and Elsmere.

This includes the following highways...
	Interstate 95 in Pennsylvania between mile markers 0 and 23.
	Interstate 95 in Delaware between mile markers 1 and 23.
	Interstate 76 in Pennsylvania between mile markers 342 and 351.
	Interstate 676 in Pennsylvania between mile markers 0 and 1.
	Interstate 476 in Pennsylvania between mile markers 0 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

&&

LAT...LON 3972 7584 3980 7586 3988 7570 3998 7543
      4002 7540 4002 7531 3998 7528 4000 7523
      3997 7511 3995 7513 3989 7514 3985 7525
      3985 7534 3977 7546 3971 7548 3970 7551
      3968 7551 3956 7578 3972 7579

FLASH FLOOD...RADAR INDICATED

$$

NC

621 
WGUS71 KPHI 011205
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
805 AM EDT Wed Sep 1 2021

DEC003-PAC029-045-101-011215-
/O.EXP.KPHI.FF.W.0064.000000T0000Z-210901T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Chester PA-Delaware PA-Philadelphia PA-
805 AM EDT Wed Sep 1 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 815 AM EDT THIS MORNING FOR 
NORTHERN NEW CASTLE, SOUTHEASTERN CHESTER, DELAWARE, AND 
SOUTHWESTERN PHILADELPHIA COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flash Flood Watch remains in effect until 800 AM EDT Thursday for 
portions of New Jersey...and Pennsylvania.

A Flash Flood Watch remains in effect until 800 AM EDT Thursday for 
portions of Delaware...northeast Maryland...and New Jersey.

LAT...LON 3972 7584 3980 7586 3988 7570 3998 7543
      4002 7540 4002 7531 3998 7528 4000 7523
      3997 7511 3995 7513 3989 7514 3985 7525
      3985 7534 3977 7546 3971 7548 3970 7551
      3968 7551 3956 7578 3972 7579

$$

NC

Flash Flood Warnings in Pennsylvania, 2021Flash Flood Warnings in Delaware, 2021Every flash flood warning in 2021

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