Flash Flood Warning 71, NWS Philadelphia/Mount Holly

617 
WGUS71 KPHI 131219
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
819 AM EDT MON AUG 13 2018

DEC003-PAC011-029-045-091-131645-
/O.CON.KPHI.FF.W.0071.000000T0000Z-180813T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Berks PA-Montgomery PA-Chester PA-Delaware PA-
819 AM EDT MON AUG 13 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT FOR
NORTHERN NEW CASTLE...BERKS...WESTERN MONTGOMERY...CHESTER AND
DELAWARE COUNTIES...

At 813 AM EDT, the public reported flash flooding along Broad Run in 
Hillstream, Delaware and in Landenberg, Pennsylvania. A band of 
heavy rain with amounts between 1.5 and 3 inches have already fallen 
in northern New Castle County, Delaware and southwestern portions of 
Chester and Berks County in Pennsylvania. Flash flooding is already 
occurring. 

Rapid rises are occurring along the West Branch Brandywine Creek, 
Christina River and White Clay Creek in response to the excess 
runoff. Move to higher grounds immediately as flash flooding is 
imminent along these streams.

Some locations that could experience flooding include...
Reading, Wilmington, Newark, West Chester, Chester, Pottstown,
Phoenixville, West Norriton, Coatesville, Westtown, Wyomissing,
Downingtown, Folcroft, Swarthmore, Elsmere, Kennett Square, New
Castle, Birdsboro, Collegeville and Oxford.

Additional rainfall amounts of 1 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

Stay away or be swept away. River banks and culverts can become
unstable and unsafe.

&&

LAT...LON 4049 7643 4057 7602 4064 7598 4068 7589
      4045 7554 3985 7526 3984 7536 3977 7546
      3963 7556 3957 7551 3955 7553 3954 7578
      3972 7579 3973 7610 3987 7599 3992 7600
      4014 7588

$$

Klein

517 
WGUS71 KPHI 131602
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1202 PM EDT MON AUG 13 2018

DEC003-PAC011-029-045-091-131645-
/O.CON.KPHI.FF.W.0071.000000T0000Z-180813T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Berks PA-Montgomery PA-Chester PA-Delaware PA-
1202 PM EDT MON AUG 13 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT FOR
NORTHERN NEW CASTLE...BERKS...WESTERN MONTGOMERY...CHESTER AND
DELAWARE COUNTIES...

At 1156 AM EDT, numerous road closures due to flooding continues 
across portions of Chester, Delaware, Montgomery and Berks County in 
southeastern Pennsylvania. The rain has ended across the warned area 
and the threat of additional flash flooding is decreasing 
accordingly. However, many of the creeks and streams in northern 
Delaware and southeastern Pennsylvania continue to rise in response 
to the excess runoff from the heavy rain this morning. An areal 
Flood Warning will likely be needed when this Flash Flood Warning is 
set to expire.

The heaviest rain fell just west of I-476 in northeast Delaware 
County and western Montgomery County in southeastern Delaware where 
radar and automated gauges indicate 4 to 6 inches of rain fell this 
morning. Several areas in Chester and Berks County also received 2 
to 4 inches of rain. 

Some locations that could experience flooding include...
Reading, Wilmington, Newark, West Chester, Chester, Pottstown,
Phoenixville, West Norriton, Coatesville, Westtown, Wyomissing,
Downingtown, Folcroft, Swarthmore, Elsmere, Kennett Square, New
Castle, Birdsboro, Collegeville and Oxford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

Stay away or be swept away. River banks and culverts can become
unstable and unsafe.

&&

LAT...LON 4049 7643 4057 7602 4064 7598 4068 7589
      4045 7554 3985 7526 3984 7536 3977 7546
      3963 7556 3957 7551 3955 7553 3954 7578
      3972 7579 3973 7610 3987 7599 3992 7600
      4014 7588

$$

JRK

046 
WGUS71 KPHI 131641
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1241 PM EDT MON AUG 13 2018

DEC003-PAC011-029-045-091-131650-
/O.EXP.KPHI.FF.W.0071.000000T0000Z-180813T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Berks PA-Montgomery PA-Chester PA-Delaware PA-
1241 PM EDT MON AUG 13 2018

...THE FLASH FLOOD WARNING FOR NORTHERN NEW CASTLE...BERKS...WESTERN
MONTGOMERY...CHESTER AND DELAWARE COUNTIES WILL EXPIRE AT 1245 PM
EDT...

The heavy rain has ended and life threatening flash flooding is no 
longer expected. However, areal flooding will linger through the 
afternoon. This is now covered by a Flood Warning.

Please continue to heed any remaining road closures.

LAT...LON 4049 7643 4057 7602 4064 7598 4068 7589
      4045 7554 3985 7526 3984 7536 3977 7546
      3963 7556 3957 7551 3955 7553 3954 7578
      3972 7579 3973 7610 3987 7599 3992 7600
      4014 7588

$$

JRK