Flash Flood Watch 9, NWS Philadelphia/Mount Holly

Issued

Aug 13, 2013, 2:45 AM EDT (06:45 UTC)

Expired

Aug 13, 2013, 11:32 AM EDT

In force

9 hr

Issued by

NWS Philadelphia/Mount Holly

Flood severity

None

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 06:48 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.

127 
WGUS61 KPHI 130645
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
245 AM EDT TUE AUG 13 2013

...LOCALLY MODERATE TO HEAVY RAIN THIS MORNING AND EARLY THIS
AFTERNOON...

.A WEAK AREA OF LOW PRESSURE APPROACHING FROM THE SOUTHWEST IS
FORECAST TO PASS OVER OUR REGION TODAY. A COLD FRONT FROM THE
NORTHWEST IS EXPECTED TO ARRIVE TONIGHT. ABUNDANT MOISTURE WITH
THE LOW AND AHEAD OF THE COLD FRONT WILL RESULT IN THE DEVELOPMENT
OF RAIN SHOWERS AND SCATTERED THUNDERSTORMS FOR TODAY. LOCALLY
MODERATE TO HEAVY RAINFALL IS LIKELY.

DEZ001-MDZ008-NJZ001-007>010-012-013-015>019-PAZ054-055-060>062-
070-071-101>106-132000-
/O.NEW.KPHI.FF.A.0009.130813T0645Z-130813T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-
MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...NEWTON...
WASHINGTON...MORRISTOWN...FLEMINGTON...SOMERVILLE...
NEW BRUNSWICK...FREEHOLD...TRENTON...PENNSVILLE...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON...MEDIA...
PHILADELPHIA...HONEY BROOK...OXFORD...WEST CHESTER...
KENNET SQUARE...COLLEGEVILLE...POTTSTOWN...NORRISTOWN...
LANSDALE...CHALFONT...PERKASIE...MORRISVILLE...DOYLESTOWN
245 AM EDT TUE AUG 13 2013

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A

* FLASH FLOOD WATCH FOR CECIL COUNTY IN MARYLAND AND NEW CASTLE
  COUNTY IN DELAWARE. THE FLASH FLOOD WATCH ALSO INCLUDES THE
  PENNSYLVANIA COUNTIES OF CARBON...MONROE...NORTHAMPTON...
  LEHIGH...BERKS...CHESTER...MONTGOMERY...BUCKS...PHILADELPHIA AND
  DELAWARE...AND THE NEW JERSEY COUNTIES OF SUSSEX...WARREN...
  MORRIS...HUNTERDON...SOMSERSET...MIDDLESEX...MERCER...WESTERN
  MONMOUTH...NORTHWESTERN BURLINGTON...CAMDEN...GLOUCESTER AND
  SALEM.

* THROUGH THIS AFTERNOON

* WIDESPREAD RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE
  ANTICIPATED FROM THIS MORNING INTO EARLY THIS AFTERNOON WITH
  LOCAL AMOUNTS UP TO THREE OR FOUR INCHES EXPECTED. MUCH OF THE
  RAIN WILL FALL IN A TWO OR THREE HOUR TIME FRAME.

* THE HEAVY RAINFALL MAY CAUSE SMALL STREAMS AND CREEKS TO LEAVE
  THEIR BANKS. ROADWAY FLOODING IS POSSIBLE ALONG WITH FLOODING IN
  AREAS OF POOR DRAINAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP WHICH COULD
LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS
SITUATION.

YOU SHOULD CHECK THE FORECAST THROUGHOUT THE DAY AND BE PREPARED
TO TAKE ACTION IF A FLASH FLOOD WARNING IS ISSUED FOR YOUR
LOCATION.

&&

$$

IOVINO

616 
WGUS61 KPHI 131532
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1132 AM EDT TUE AUG 13 2013

DEZ001-MDZ008-NJZ001-007>010-012-013-015>019-PAZ054-055-060>062-
070-071-101>106-131645-
/O.CAN.KPHI.FF.A.0009.000000T0000Z-130813T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-
MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...NEWTON...
WASHINGTON...MORRISTOWN...FLEMINGTON...SOMERVILLE...
NEW BRUNSWICK...FREEHOLD...TRENTON...PENNSVILLE...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON...MEDIA...
PHILADELPHIA...HONEY BROOK...OXFORD...WEST CHESTER...
KENNET SQUARE...COLLEGEVILLE...POTTSTOWN...NORRISTOWN...
LANSDALE...CHALFONT...PERKASIE...MORRISVILLE...DOYLESTOWN
1132 AM EDT TUE AUG 13 2013

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN DELAWARE...
NORTHEAST MARYLAND...NEW JERSEY AND PENNSYLVANIA HAS BEEN
CANCELLED. 

THE HEAVY RAINFALL HAS MOVED OUT OF THE AREA, AND NO ADDITIONAL
HEAVY RAINFALL IS ANTICIPATED FOR THE REMAINDER OF THE AFTERNOON,
ALTHOUGH A FEW SCATTERED SHOWERS REMAIN POSSIBLE.

NUMEROUS FLOOD WARNINGS CONTINUE FOR MUCH OF THE AREA, AND WILL
CONTINUE INTO THIS AFTERNOON AS RUNOFF FROM THE EARLIER HEAVY
RAINFALL CONTINUES TO DRAIN.

$$

ROBERTSON

Flash Flood Watches in New Jersey, 2013Flash Flood Watches in Pennsylvania, 2013Flash Flood Watches in Maryland, 2013Every flash flood watch in 2013

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.