Alert archive / New Jersey / Flash Flood Watches in 2016

Flash Flood Watch 5, NWS Philadelphia/Mount Holly

September 28, 20164 states

NWS Philadelphia/Mount Holly issued this flash flood watch at Sep 28, 2016, 3:48 PM EDT for 4 states. It took effect at Sep 28, 2016, 6:00 PM EDT. It was in force for 41 hr.

The area

The counties it named.

The facts

Issued
Sep 28, 2016, 3:48 PM EDT (19:48 UTC)
In effect from
Sep 28, 2016, 6:00 PM EDT
Expired
Sep 30, 2016, 10:38 AM EDT
In force
41 hr
Issued by
NWS Philadelphia/Mount Holly
Flood severity
None

Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 19:49 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.8 hours before the alert went out and 165 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 12:00Z on 2016-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 191 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2016-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
191 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

074 
WGUS61 KPHI 281948
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
348 PM EDT WED SEP 28 2016

MDZ008-012-015-019-020-290400-
/O.NEW.KPHI.FF.A.0005.160928T2200Z-160929T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF...ELKTON...CHESTERTOWN...CENTREVILLE...
EASTON...DENTON
348 PM EDT WED SEP 28 2016

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A

* FLASH FLOOD WATCH FOR A PORTION OF NORTHEAST MARYLAND... 
  INCLUDING THE FOLLOWING AREAS...CAROLINE...CECIL...KENT MD... 
  QUEEN ANNES AND TALBOT. 

* THROUGH THURSDAY AFTERNOON

* SHOWERS ARE EXPECTED TO BECOME MORE WIDESPREAD THIS AFTERNOON
  AND PERSIST THROUGH THE OVERNIGHT AND INTO TOMORROW. ISOLATED
  THUNDERSTORMS ARE EXPECTED AS WELL. IN GENERAL, ONE TO THREE
  INCHES OF RAINFALL IS EXPECTED ACROSS THE WATCH AREA, BUT
  LOCATIONS THAT SEE THE ISOLATED THUNDERSTORMS AND HEAVIER
  SHOWERS COULD SEE THEIR RAINFALL AMOUNTS DOUBLE...UP TO SIX
  INCHES.

* WITH UP TO TWO INCHES OF RAIN FALLING EARLIER TODAY ACROSS KENT,
  QUEEN ANNES, AND CAROLINE COUNTIES, THESE LOCATIONS WILL SEE MORE
  RUNOFF IF HEAVY RAIN DEVELOPS.
  
* IN ALL, A GENERAL THREE TO FIVE INCH RAINFALL IS EXPECTED
  THROUGH SATURDAY. ISOLATED HEAVIER AMOUNTS ARE ALSO EXPECTED.
  BUT AT THE MOMENT, IT APPEARS THE RAINS WHICH COULD LEAD TO THE
  GREATEST IMPACTS WILL FALL THROUGH TOMORROW.

* IF THE THREAT OF FLOODING EXTENDS BEYOND TOMORROW, ADDITIONAL
  FLASH FLOOD WATCHES WILL BE ISSUED. THE EASTERN SHORE IS
  CURRENTLY ON THE PERIPHERY OF THE HEAVIEST RAIN. A GREATER
  THREAT OF FLOODING EXISTS TO OUR WEST. BUT IF THE RAINFALL
  SHIFTS SLIGHTLY TO THE EAST, THE FLOOD POTENTIAL ACROSS THE
  EASTERN SHORE WILL INCREASE. REMAIN VIGILANT THROUGH SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
7 follow-up statements
157 
WGUS61 KPHI 290137
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
937 PM EDT WED SEP 28 2016

MDZ008-012-015-019-020-290945-
/O.CON.KPHI.FF.A.0005.000000T0000Z-160929T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF...ELKTON...CHESTERTOWN...CENTREVILLE...
EASTON...DENTON
937 PM EDT WED SEP 28 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY
AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* A PORTION OF NORTHEAST MARYLAND...INCLUDING THE FOLLOWING 
  AREAS...CAROLINE...CECIL...KENT MD...QUEEN ANNES AND TALBOT. 

* THROUGH THURSDAY AFTERNOON

* SHOWERS ARE EXPECTED TO BECOME MORE WIDESPREAD OVERNIGHT AND
  PERSIST INTO THURSDAY. ISOLATED THUNDERSTORMS ARE EXPECTED AS
  WELL. IN GENERAL...ONE TO THREE INCHES OF RAINFALL IS EXPECTED
  ACROSS THE WATCH AREA...BUT LOCATIONS THAT SEE THE ISOLATED
  THUNDERSTORMS AND HEAVIER SHOWERS COULD SEE THEIR RAINFALL
  AMOUNTS DOUBLE...UP TO SIX INCHES.

* WITH UP TO TWO INCHES OF RAIN FALLING EARLIER TODAY ACROSS
  KENT...QUEEN ANNES...AND CAROLINE COUNTIES...THESE LOCATIONS
  WILL SEE MORE RUNOFF IF HEAVY RAIN DEVELOPS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
865 
WGUS61 KPHI 290737
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
337 AM EDT THU SEP 29 2016



DEZ001>004-292100-
/O.EXB.KPHI.FF.A.0005.000000T0000Z-160930T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH
337 AM EDT THU SEP 29 2016

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS EXPANDED THE

* FLASH FLOOD WATCH TO INCLUDE PORTIONS OF CENTRAL DELAWARE... 
  NORTHERN DELAWARE AND SOUTHERN DELAWARE...INCLUDING THE 
  FOLLOWING AREAS...IN CENTRAL DELAWARE...KENT. IN NORTHERN 
  DELAWARE...NEW CASTLE. IN SOUTHERN DELAWARE...DELAWARE BEACHES 
  AND INLAND SUSSEX. 

* THROUGH LATE TONIGHT

* WIDESPREAD RAIN IS EXPECTED TO CONTINUE THROUGH THE DAY AND
  OVERNIGHT. MOST LOCATIONS WILL SEE RAIN TOTALS OF ONE TO THREE
  INCHES. HOWEVER...ISOLATED THUNDERSTORMS COULD BRING LOCALLY
  MUCH HIGHER RAIN AMOUNTS WHICH COULD LEAD TO FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

MDZ008-012-015-019-020-292100-
/O.EXT.KPHI.FF.A.0005.000000T0000Z-160930T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF...ELKTON...CHESTERTOWN...CENTREVILLE...
EASTON...DENTON
337 AM EDT THU SEP 29 2016

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT...

THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR

* A PORTION OF NORTHEAST MARYLAND...INCLUDING THE FOLLOWING 
  AREAS...CAROLINE...CECIL...KENT MD...QUEEN ANNES AND TALBOT. 

* THROUGH LATE TONIGHT

* WIDESPREAD RAIN IS EXPECTED TO CONTINUE THROUGH THE DAY AND
  OVERNIGHT. MOST LOCATIONS WILL SEE RAIN TOTALS OF ONE TO THREE
  INCHES. HOWEVER...ISOLATED THUNDERSTORMS COULD BRING LOCALLY
  MUCH HIGHER RAIN AMOUNTS WHICH COULD LEAD TO FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
638 
WGUS61 KPHI 291246
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
846 AM EDT THU SEP 29 2016

DEZ001>004-MDZ008-012-015-019-020-292100-
/O.CON.KPHI.FF.A.0005.000000T0000Z-160930T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON
846 AM EDT THU SEP 29 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF DELAWARE AND NORTHEAST MARYLAND...INCLUDING THE 
  FOLLOWING AREAS...IN DELAWARE...DELAWARE BEACHES...INLAND 
  SUSSEX...KENT AND NEW CASTLE. IN NORTHEAST MARYLAND... 
  CAROLINE...CECIL...KENT MD...QUEEN ANNES AND TALBOT. 

* THROUGH LATE TONIGHT

* WHILE THERE IS A TEMPORARY LULL IN THE HEAVY RAIN THIS MORNING
  WE ARE EXPECTING BANDS OF HEAVY SHOWERS WITH EMBEDDED
  THUNDERSTORMS TO DEVELOP NORTH AND NORTHWESTWARD INTO THE WATCH
  AREA THIS AFTERNOON AND TONIGHT. NEW RAINFALL FROM 9 AM THIS
  MORNING THROUGH 8 AM FRIDAY SHOULD BE 1 TO 3 INCHES. HOWEVER
  THERE IS POTENTIAL FOR 6 INCHES IN A FEW LOCATIONS, WHERE
  THUNDERSTORMS OCCUR.

* RENEWED HEAVY RAIN WHERE AMOUNTS HAVE ALREADY EXCEEDED 4 INCHES
  WILL CAUSE SOME RUNOFF AND PONDING PROBLEMS. IF 4 TO 6 INCHES
  WERE TO OCCUR DURING THE NEXT 24 HOURS ON TOP OF THE ALREADY 4
  INCHES THAT HAVE FALLEN, LOCALIZED FLASH FLOODING WOULD ENSUE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
015 
WGUS61 KPHI 291901
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
301 PM EDT THU SEP 29 2016

NJZ016>027-PAZ070-071-300800-
/O.EXB.KPHI.FF.A.0005.000000T0000Z-160930T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-
ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...PENNSVILLE...GLASSBORO...CAMDEN...
CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON...MILLVILLE...
HAMMONTON...CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY...
LONG BEACH ISLAND...WHARTON STATE FOREST...MEDIA...PHILADELPHIA
301 PM EDT THU SEP 29 2016

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS EXPANDED THE

* FLASH FLOOD WATCH TO INCLUDE PORTIONS OF SOUTHERN NEW JERSEY 
  AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS... 
  IN SOUTHERN NEW JERSEY...ATLANTIC...ATLANTIC COASTAL CAPE 
  MAY...CAMDEN...CAPE MAY...COASTAL ATLANTIC...COASTAL OCEAN... 
  CUMBERLAND...GLOUCESTER...NORTHWESTERN BURLINGTON...OCEAN... 
  SALEM AND SOUTHEASTERN BURLINGTON. IN SOUTHEAST PENNSYLVANIA...
   DELAWARE AND PHILADELPHIA. 

* THROUGH FRIDAY AFTERNOON

* HEAVY RAINFALL ASSOCIATED WITH LOW PRESSURE WILL AFFECT THE AREA
  THROUGH FRIDAY. THE HEAVIEST RAINS WILL TAPER OFF AFTER DAYBREAK
  FRIDAY. WIDESPREAD 2 TO 4 INCH RAIN TOTALS ARE POSSIBLE WITH
  ISOLATED AMOUNTS AROUND 6 INCHES POSSIBLE NEAR THE COASTAL
  AREAS. THESE RAINFALL TOTALS ARE CAPABLE OF PRODUCING FLOODING
  ACROSS THE WATCH AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

DEZ001>004-MDZ008-012-015-019-020-300800-
/O.EXT.KPHI.FF.A.0005.000000T0000Z-160930T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON
301 PM EDT THU SEP 29 2016

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH FRIDAY AFTERNOON...

THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR

* PORTIONS OF DELAWARE AND NORTHEAST MARYLAND...INCLUDING THE 
  FOLLOWING AREAS...IN DELAWARE...DELAWARE BEACHES...INLAND 
  SUSSEX...KENT AND NEW CASTLE. IN NORTHEAST MARYLAND... 
  CAROLINE...CECIL...KENT MD...QUEEN ANNES AND TALBOT. 

* THROUGH FRIDAY AFTERNOON

* HEAVY RAINFALL ASSOCIATED WITH LOW PRESSURE WILL AFFECT THE AREA
  THROUGH FRIDAY. THE HEAVIEST RAINS WILL TAPER OFF AFTER DAYBREAK
  FRIDAY. WIDESPREAD 2 TO 3 INCH RAIN TOTALS ARE EXPECTED WITH
  ISOLATED AMOUNTS AROUND 6 INCHES POSSIBLE NEAR THE COAST. THESE
  RAINFALL TOTALS ARE CAPABLE OF PRODUCING FLOODING ACROSS THE
  WATCH AREA. IF THESE RAINFALL TOTALS ARE REALIZED, STORM TOTAL
  RAINFALL ACROSS EASTERN SUSSEX COUNTY DELAWARE COULD BE CLOSE TO
  12 INCHES. THIS WILL LEAD TO WIDESPREAD FLOODING ISSUES IN THAT
  AREA.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

PO
831 
WGUS61 KPHI 300749
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
349 AM EDT FRI SEP 30 2016

DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-PAZ070-071-302000-
/O.CON.KPHI.FF.A.0005.000000T0000Z-160930T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...
MOORESTOWN...MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON...
CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY...
LONG BEACH ISLAND...WHARTON STATE FOREST...MEDIA...PHILADELPHIA
349 AM EDT FRI SEP 30 2016

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

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF DELAWARE...NORTHEAST MARYLAND...SOUTHERN NEW 
  JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING 
  AREAS...IN DELAWARE...DELAWARE BEACHES...INLAND SUSSEX...KENT 
  AND NEW CASTLE. IN NORTHEAST MARYLAND...CAROLINE...CECIL... 
  KENT MD...QUEEN ANNES AND TALBOT. IN SOUTHERN NEW JERSEY... 
  ATLANTIC...ATLANTIC COASTAL CAPE MAY...CAMDEN...CAPE MAY... 
  COASTAL ATLANTIC...COASTAL OCEAN...CUMBERLAND...GLOUCESTER... 
  NORTHWESTERN BURLINGTON...OCEAN...SALEM AND SOUTHEASTERN 
  BURLINGTON. IN SOUTHEAST PENNSYLVANIA...DELAWARE AND 
  PHILADELPHIA. 

* THROUGH THIS AFTERNOON

* HEAVY RAINFALL WILL CONTINUE TO AFFECT THE AREA THROUGH TODAY.
  WIDESPREAD 3 TO 6 INCHES INCHES HAS FALLEN ACROSS PORTIONS OF
  THE DELMARVA AND SOUTHERN NEW JERSEY OVER THE LAST TWO DAYS,
  WITH HIGHER AMOUNTS OF 10-12 INCHES ACROSS FAR SOUTHERN
  DELAWARE. ADDITIONAL PERIODS OF MODERATE TO HEAVY RAINFALL TODAY
  WILL LEAD TO MORE FLOODING AND EXACERBATE EXISTING FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
222 
WGUS61 KPHI 301158
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
758 AM EDT FRI SEP 30 2016

NJZ017>020-022-025>027-PAZ071-301300-
/O.CAN.KPHI.FF.A.0005.000000T0000Z-160930T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-ATLANTIC-
COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
PHILADELPHIA-
INCLUDING THE CITIES OF...GLASSBORO...CAMDEN...CHERRY HILL...
MOORESTOWN...MOUNT HOLLY...JACKSON...HAMMONTON...ATLANTIC CITY...
LONG BEACH ISLAND...WHARTON STATE FOREST...PHILADELPHIA
758 AM EDT FRI SEP 30 2016

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF SOUTHERN NEW JERSEY AND
SOUTHEAST PENNSYLVANIA HAS BEEN CANCELLED. BENEFICIAL BUT...NOT
EXCESSIVE...RAINFALL IN THIS PREVIOUSLY DRY REGION IS EXPECTED
TODAY.

$$

DEZ001>004-MDZ008-012-015-019-020-NJZ016-021-023-024-PAZ070-
302000-
/O.CON.KPHI.FF.A.0005.000000T0000Z-160930T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SALEM-CUMBERLAND-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-DELAWARE-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...PENNSVILLE...MILLVILLE...CAPE MAY COURT HOUSE...
OCEAN CITY...MEDIA
758 AM EDT FRI SEP 30 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF DELAWARE...NORTHEAST MARYLAND...SOUTHERN NEW 
  JERSEY AND SOUTHEAST PENNSYLVANIA...INCLUDING THE FOLLOWING 
  AREAS...IN DELAWARE...DELAWARE BEACHES...INLAND SUSSEX...KENT 
  AND NEW CASTLE. IN NORTHEAST MARYLAND...CAROLINE...CECIL... 
  KENT MD...QUEEN ANNES AND TALBOT. IN SOUTHERN NEW JERSEY... 
  ATLANTIC COASTAL CAPE MAY...CAPE MAY...CUMBERLAND AND SALEM. 
  IN SOUTHEAST PENNSYLVANIA...DELAWARE. 

* UNTIL 4 PM EDT THIS AFTERNOON

* WHILE THE HEAVIEST RAINS HAVE OCCURRED, THERE ARE STILL A FEW
  RISING STREAMS THAT MY EXCEED FLOOD STAGE IN THE WATCH AREA.
  ADDITIONAL RAINFALL AFTER 8 AM TODAY SHOULD BE GENERALLY LESS
  THAN HALF AN INCH. 

* WIDESPREAD 48 HOUR TOTALS OF 3 TO 6 INCHES OCCURRED WITH A
  SMALL AREA OF 10-12 INCHES ACROSS FAR SOUTHEASTERN DELAWARE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
433 
WGUS61 KPHI 301438
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1038 AM EDT FRI SEP 30 2016

DEZ001>004-MDZ008-012-015-019-020-NJZ016-021-023-024-PAZ070-
301545-
/O.CAN.KPHI.FF.A.0005.000000T0000Z-160930T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SALEM-CUMBERLAND-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-DELAWARE-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...PENNSVILLE...MILLVILLE...CAPE MAY COURT HOUSE...
OCEAN CITY...MEDIA
1038 AM EDT FRI SEP 30 2016

...FLASH FLOOD WATCH IS CANCELLED...

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

AREAL FLOOD WARNINGS CONTINUE FOR PORTIONS OF SOUTHERN DELAWARE
INTO QUEEN ANNES AND CAROLINE COUNTIES OF MARYLAND, FOR RESIDUAL
RUNOFF.

THE NANTICOKE RIVER IN BRIDGETON WAS STILL RISING STEADILY AND WAS
AT ITS HIGHEST STAGE SINCE 1999, EVEN HIGHER THAN THE IRENE FLOOD
EPISODE OF AUGUST 2011.

A FEW STREAMS WILL CONTINUE RISING IN FAR SOUTHERN NEW JERSEY, INCLUDING
THE COHANSEY AND MAURICE RIVERS, BUT PROBABLY REMAIN WITHIN THEIR
BANKS.

TWO DAY RAINS ACROSS THIS WATCH AREA AVERAGED 3 TO 6 INCHES WITH
10 TO 14 INCHES IN PARTS OF SOUTHERN DELAWARE. 

$$

DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 2:56 PM EDTGale WarningPHI54 hr
Sep 28, 5:38 PM EDTRip Current StatementPHIAtlantic, Cape May, Monmouth, Ocean48 hr

Nearby

Flash Flood Watches in New Jersey, 2016Flash Flood Watches in Maryland, 2016Flash Flood Watches in Delaware, 2016Every flash flood watch in 2016

Sources

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.