Alert archive / Pennsylvania / River Flood Warnings in 2020

River Flood Warning 12, NWS Philadelphia/Mount Holly

July 10, 2020Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Jul 10, 2020, 4:05 PM EDT for Delaware County, Pennsylvania. It took effect at Jul 10, 2020, 4:12 PM EDT. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jul 10, 2020, 4:05 PM EDT (20:05 UTC)
In effect from
Jul 10, 2020, 4:12 PM EDT
Expired
Jul 10, 2020, 7:43 PM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
Moderate

County Delaware County, PA

The radar

The Philadelphia radar (KDIX), 86 km from the middle of the area, began a volume at 20:05 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 river

Written for the forecast point Chester Creek near Chester (CHSP1). The gauge peaked at 7.95 ft at Jul 10, 2020, 6:00 PM EDT.

actionminormoderate51007/1007/11
Action stage
7 ft
Minor stage
8 ft
Moderate stage
10 ft
Major stage
14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01477000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

076 
WGUS41 KPHI 102005
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
405 PM EDT Fri Jul 10 2020

...The National Weather Service in Mount Holly NJ has issued a flood warning for
the following rivers in Pennsylvania...

  Chester Creek Near Chester affecting Delaware County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

PAC045-110204-
/O.NEW.KPHI.FL.W.0012.200710T2012Z-200711T0857Z/
/CHSP1.2.ER.200710T2012Z.200710T2100Z.200711T0257Z.NO/
405 PM EDT Fri Jul 10 2020

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Chester Creek at Chester.
* until late tonight...or until the warning is cancelled.
* At  4:01 PM Friday the stage was 7.2 feet.
* Flood stage is 8.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by late this afternoon and continue to rise 
  to near 11.4 feet by late this afternoon.the river will fall below flood stage
  by tonight.
* Impact...At 11.5 feet...Parker and Kerlin Streets flood. The 600 to 1300 
  blocks of Parker Street are subject to evacuations. The 1300-1400 blocks of 
  Kerlin Street are also subject to evacuations.
* Flood history...This crest compares to a previous crest of 11.3 feet on Oct 19 
  1996.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Chester Creek
  Chester                8.0    7.16  Fri 4 PM    11.4    Fri 5 PM 
 
&&
 
LAT...LON 3991 7542 3985 7534 3981 7540 3987 7547
                                      

$$
1 follow-up statement
890 
WGUS81 KPHI 102343
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
743 PM EDT Fri Jul 10 2020

...The Flood Warning is cancelled for the following rivers in Pennsylvania...

  Chester Creek Near Chester affecting Delaware County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

PAC045-110013-
/O.CAN.KPHI.FL.W.0012.000000T0000Z-200711T0857Z/
/CHSP1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
743 PM EDT Fri Jul 10 2020

The Flood Warning is cancelled for
  The Chester Creek at Chester.
* At  7:31 PM Friday the stage was 7.2 feet.
* Flood stage is 8.0 feet.
* Forecast...The river crested below flood stage at 8.0 feet. The river will 
  continue to fall to 4.2 feet by tomorrow morning.
* Impact...At 7.0 feet...The creek floods adjacent open land.
* Flood history...This crest compares to a previous crest of 8.7 feet on Apr 17 
  2011.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Chester Creek
  Chester                8.0    7.25  Fri 8 PM     6.2    Fri 8 PM 
 
&&
 
LAT...LON 3991 7542 3985 7534 3981 7540 3987 7547
                                      

$$

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this river flood warning went out at Jul 10, 12:26 PM EDT, 3 hours 39 minutes earlier.

Area forecast discussion, Jul 10, 12:26 PM EDT, 3 hours 39 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
1226 PM EDT Fri Jul 10 2020

.SYNOPSIS...
Tropical Storm Fay will continue to work its way northward near
the coast of New Jersey this afternoon, and into eastern New
York and western New England tonight. Behind the system, another
area of low pressure is forecast to drag a cold front through
the region on Saturday night. An additional disturbance is
forecast to move through the region Monday into Tuesday before
high pressure builds across the eastern U.S., ushering in drier
conditions.

&&

.NEAR TERM /THROUGH TONIGHT/...
Tropical Storm Fay was centered about 25 miles east of the
Delaware Beaches at noon. The center is forecast to move
northward along the New Jersey coast this afternoon and through
the New York City metropolitan area this evening.

We continue to expect the main threat in our region to be heavy
rain. Widespread totals in the 2 to 4 inch range are
anticipated with locally higher amounts. Our entire forecast
area is under a Flash Flood Watch.

Winds along the coast will gust in excess of 40 MPH. Meanwhile,
the wind gusts in northeastern Maryland and eastern
Pennsylvania should peak generally in the 25 to 30 MPH range.

There remains the potential for an isolated weak tornado or two
in the coastal counties of New Jersey as the storm works its
way northward due to the increased shear in that area.

The rain will end gradually from south to north during the
afternoon and evening hours.

High temperatures should favor the 75 to 80 degree range.

&&

.SHORT TERM /SATURDAY THROUGH SATURDAY NIGHT/...
Tropical Storm Fay will be quickly heading north across New
England Saturday morning thanks to an approaching shortwave from
the west. This shortwave looks rather potent for this time of
year with both the ECMWF and GFS showing a ~40 m height
fall/rise couplet across the Mid-Atlantic Saturday afternoon.
This wave will also begin to eject to the northeast Saturday
afternoon and take on a negative tilt. This will place
northeastern NJ in a RRQ. Wind profiles are also interesting
with SFC to 6 km bulk shear values around 30 kts. Hodographs do
show a veer-back-veer profile which wouldn't be extremely
helpful for updrafts. Instability wise, ML CAPEs are forecast to
be around 2000 J/kg (NAM) with maximum values over the NJ
Coastal Plain. Given the instability, shear, and lift mentioned
above there is a threat for severe threat. Storm mode with this
appears to start out as discrete due to mean wind and bulk shear
vectors being out of the southwest in a modestly wide warm
sector. It appears by late Saturday afternoon into evening
modest surface convergence might form near PA/ NJ which would
favor more clustering as bulk shear vectors would be oblique to
the boundary.

Threat wise, damaging wind gusts appear to be the primary
hazard as dry air in the mid-levels remains consistent across
both GFS and NAM forecast soundings. Surface delta theta-e
values are around -25 which is rather favorable. A secondary
threat would be hail if storms remain discrete longer. High
temperatures Saturday will be in the low 90s as 850 mb
temperatures are around 20 degrees C.

Saturday night into early Sunday morning the shortwave will
eject northeast with a weak cold front moving through the area.
Convective coverage will also quickly wane Saturday evening as
daytime heating is lost.

&&

.LONG TERM /SUNDAY THROUGH THURSDAY/...
Sunday morning the shortwave from Tuesday will be over New
England with a long wave trough axis remaining centered over the
Ohio Valley. Sunday afternoon, most of the area will likely
stay dry in the wake of Saturday's departing shortwave. Another
shortwave located over Lake Michigan Sunday morning will rotate
through the base of the trough axis Sunday evening helping to
initiate another round of showers and thunderstorms. Finally on
Monday the long wave trough axis will start to translate east as
a strong upper level low over western Canada slowly heads east.
This eastward movement will bring a final shortwave southeast
across the Great Lakes region towards the Mid-Atlantic. The wave
will cross the area Monday afternoon finally bringing a slow
end to the precipitation from west to east. PWATs behind the
wave will be around 1.20", but dewpoints will only slightly fall
off. 850 mb temperatures also stay around 15 degrees C, so high
temperatures Monday and Tuesday remain in the upper 80s.

Tuesday into Wednesday the wave will head northeast towards New
England with weak subsidence occuring in its wake. The latest
runs of the ECMWF and GFS show a weak wave diving southeast on
the back side of the trough axis, but think precipitation
chances are limited here. The main reason for this is the dry
air.

Wednesday into Thursday, rather zonal flow sets up over the
region as mid-level ridging builds across the southeastern
United States, with a potent mid-level low located near the
Hudson Bay. This in general, would favor below normal
precipitation and above normal temperatures. A slightly stronger
ridge, or weaker upper level low would alter the forecast
correspondingly drier or wetter. Expect high temperatures in low
90s Wednesday and Thursday.

&&

.AVIATION /16Z FRIDAY THROUGH TUESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

This afternoon...Mainly MVFR/IFR conditions expected with
periods of heavy rain. Scattered thunderstorms are possible.
Northeast winds around 10 knots at KABE and KRDG and 15 to 25
knots with gusts up to 40 knots near the coast. Generally
moderate confidence with low confidence on timing and location
of thunderstorms.

Tonight...Mainly MVFR conditions expected with possible
improvement to VFR after 06Z. Chance of showers through this
evening and patchy fog possible overnight. West to southwest
winds around 5 to 10 knots. Moderate confidence with low
confidence on timing of improving conditions.

Outlook...

Saturday...Mainly VFR conditions expected. Afternoon showers
and thunderstorms with MVFR or lower conditions possible.
Southwest winds around 5 to 10 knots. Moderate confidence.

Saturday Night...Showers and thunderstorms with MVFR or lower
conditions possible early. Otherwise, mainly VFR conditions
expected. Light west to southwest winds. Moderate confidence.

Sunday...Mainly VFR conditions expected. Afternoon showers and
thunderstorms possible. West-southwest winds around 5 to 10
knots. Moderate confidence.

Sunday Night...MVFR or lower conditions in showers and
thunderstorms overnight. Patchy fog possible. Light southwest
winds. Moderate confidence.

Monday...Patchy fog may linger into the morning hours.
Otherwise, mainly VFR conditions expected. Afternoon showers and
thunderstorms with MVFR or lower conditions possible. Southwest
winds around 5 to 10 knots. Moderate confidence.

Monday Night...Showers and thunderstorms with MVFR or lower
conditions possible early. Otherwise, mainly VFR conditions
expected. Light southwest winds will turn west and then
northwest overnight. Low confidence.

Tuesday...Mainly VFR conditions expected. Afternoon showers and
thunderstorms with MVFR or lower conditions possible. West to
southwest winds around 5 to 10 knots. Low confidence.

&&

.MARINE...
Conditions have deteriorated on the Atlantic coastal waters and
lower Delaware Bay as Tropical Storm Fay continues to affect
the area. There will be tropical-storm force winds with
rain/squalls and occasional lightning moving gradually
northward. The threat for waterspouts exists today given high to
extreme low-level shear and marginal instability.

Winds are likely to remain in the small craft advisory category
on Delaware Bay, so the advisory remains in place here.

Conditions are expected to improve slowly this evening and
tonight, as rain will become more showery and flow will become
offshore on the south side of the system. Tropical storm force
winds/gusts may linger for much of the night, though a trend
downward with time should be expected.

Seas will range from 6 to 10 feet on our ocean waters with
locally higher wave heights. There will be only a gradual
decrease as the system departs.

Outlook...

Saturday...Seas may linger around 5 feet for much of the day,
but winds will likely become sub-advisory. A chance of storms.

Saturday night through Tuesday...Sub-advisory winds/seas
expected. A chance of afternoon/evening storms, primarily on
Monday and Tuesday.

Rip Currents...
Conditions have deteriorated due to Tropical Storm Fay. With
rough seas and a longer-period southeasterly swell, the threat
for the formation of dangerous rip currents is high today. The
flow will become somewhat offshore in the wake of the system on
Saturday, though winds will become more southerly/southwesterly
by afternoon. With seas remaining elevated and residual swell
from the tropical system, at least a moderate risk of rip
currents is anticipated for Saturday.

&&

.HYDROLOGY...
Heavy rains from Tropical Storm Fay will cause flooding today.
Expected rainfall is from 2 to 4 inches with local amounts up to
6 inches possible.

One hour flash flood guidance values across south and central
New Jersey are between 2-3 inches while across the Lehigh Valley
the values are as low as 3/4 of an inch. With the tropical
air mass moving in, several of the CAMs are indicating the
potential that may be exceeded. While the 6 hour flash flood
guidance is between 4 to 6 inches, the 7-day percent of normal
precipitation plot from AHPS showed a few areas in southern NJ
and the Delmarva Peninsula with 200 to 400 percent of normal
rainfall.

&&

.TIDES/COASTAL FLOODING...
With Tropical Storm Fay moving slowly northward today
near/along our coast, a period of stronger onshore flow will
occur to the north of the cyclone center. Though this would
often be concerning for the potential of coastal flooding, a
number of factors are mitigating a more substantive threat to
the coast. First, the lunar cycle is out of phase with the
event, which results in tidal departures of 2+ feet required for
minor coastal flooding. Second, the developing tropical storm
is not intensifying quickly (and will likely plateau as it moves
northward into colder and colder waters today) and is moving
reasonably steadily. Given these factors, onshore flow will not
be especially strong for long, so any associated surge should be
minimal (i.e., generally less than 2 feet).

Nevertheless, we are a little concerned models are underplaying
the tidal departures for tonight's high tide (the higher of the
two astronomical tides in the next 24 hours). A transition to
offshore flow will likely begin around this time, but this is
usually not enough time to counter the effects of antecedent
onshore flow. As a result, our latest forecast is well above
model guidance for tonight's high tide, but still short of minor
flooding criteria. Future adjustments are likely based on
observations/model trends this morning.

One other consideration: Flow will likely develop a southerly
fetch on Saturday as Fay departs to our north/northeast. This
may result in higher water levels on the eastern shore of
Chesapeake Bay during the weekend. However, once again, we are
not currently forecasting tidal departures sufficient to produce
flooding in these areas. This will require close monitoring
with future updates, though.

&&

.EQUIPMENT...
The NOAA Weather Radio All Hazards broadcast from Hibernia
Park, PA (WNG704) remains off the air until further notice due
to damage to the antenna during the June 3 derecho.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flash Flood Watch until 8 PM EDT this evening for PAZ054-055-
     060>062-070-071-101>106.
NJ...Flash Flood Watch until 8 PM EDT this evening for NJZ001-
     007>010-012>020-026-027.
     Flash Flood Watch until 4 PM EDT this afternoon for NJZ021>025.
     High Rip Current Risk until 8 PM EDT this evening for NJZ014-
     024>026.
     Tropical Storm Warning for NJZ012>014-020-022>027.
DE...Flash Flood Watch until 8 PM EDT this evening for DEZ001.
     Flash Flood Watch until 4 PM EDT this afternoon for DEZ002>004.
     High Rip Current Risk until 8 PM EDT this evening for DEZ004.
     Tropical Storm Warning for DEZ003-004.
MD...Flash Flood Watch until 8 PM EDT this evening for MDZ008.
     Flash Flood Watch until 4 PM EDT this afternoon for MDZ012-015-
     019-020.
MARINE...Tropical Storm Warning for ANZ431-450>455.
     Small Craft Advisory until 6 PM EDT this evening for ANZ430.

&&

Synopsis...Haines
Near Term...Iovino
Short Term...Haines
Long Term...Haines
Aviation...Meola
Marine...CMS
Hydrology...WFO PHI
Tides/Coastal Flooding...WFO PHI
Equipment...WFO PHI
Hazardous weather outlook, Jul 10, 3:44 PM EDT, 21 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
344 PM EDT Fri Jul 10 2020

DEZ001-MDZ008-NJZ016>019-PAZ060-070-071-101>104-111945-
New Castle-Cecil-Salem-Gloucester-Camden-Northwestern Burlington-
Berks-Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-
344 PM EDT Fri Jul 10 2020

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for northern Delaware, northeast
Maryland, southern New Jersey, east central Pennsylvania and
southeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ001-007>010-015-PAZ054-055-061-062-105-106-111945-
Sussex-Warren-Morris-Hunterdon-Somerset-Mercer-Carbon-Monroe-Lehigh-
Northampton-Upper Bucks-Lower Bucks-
344 PM EDT Fri Jul 10 2020

...FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

This Hazardous Weather Outlook is for central New Jersey, northern
New Jersey, northwest New Jersey, east central Pennsylvania,
northeast Pennsylvania and southeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

DEZ002-MDZ012-015-019-020-NJZ021-111945-
Kent-Kent MD-Queen Annes-Talbot-Caroline-Cumberland-
344 PM EDT Fri Jul 10 2020

This Hazardous Weather Outlook is for central Delaware, northeast
Maryland and southern New Jersey.

.DAY ONE...This afternoon and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ013-020-027-111945-
Western Monmouth-Ocean-Southeastern Burlington-
344 PM EDT Fri Jul 10 2020

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for central New Jersey and
southern New Jersey.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.
   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ012-111945-
Middlesex-
344 PM EDT Fri Jul 10 2020

...FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for northern New Jersey.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.
   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ003-NJZ022-023-111945-
Inland Sussex-Atlantic-Cape May-
344 PM EDT Fri Jul 10 2020

...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for southern Delaware and
southern New Jersey.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

NJZ014-026-111945-
Eastern Monmouth-Coastal Ocean-
344 PM EDT Fri Jul 10 2020

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for central New Jersey and
southern New Jersey.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Rip Current Risk.
   Flash Flood Watch.
   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

DEZ004-NJZ024-025-111945-
Delaware Beaches-Atlantic Coastal Cape May-Coastal Atlantic-
344 PM EDT Fri Jul 10 2020

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for southern Delaware and
southern New Jersey.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Rip Current Risk.
   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

ANZ431-450>455-111945-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
344 PM EDT Fri Jul 10 2020

...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for Atlantic coastal waters and
Delaware Bay Waters.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

ANZ430-111945-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
344 PM EDT Fri Jul 10 2020

This Hazardous Weather Outlook is for Delaware Bay Waters.

.DAY ONE...This afternoon and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

In the hours before

Local storm report, Jul 10, 3:31 PM EDT, 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
331 PM EDT FRI JUL 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0330 PM     HEAVY RAIN       FRANKLIN TWP            39.60N 75.06W
07/10/2020  E5.28 INCH       GLOUCESTER         NJ   COCORAHS

&&
Local storm report, Jul 10, 3:32 PM EDT, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
332 PM EDT FRI JUL 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0331 PM     FLOOD            FRANKLIN TWP            39.60N 75.06W
07/10/2020                   GLOUCESTER         NJ   PUBLIC

            FLOODING OF ROADS NEAR STREAMS AND CREEKS.

&&
Local storm report, Jul 10, 3:33 PM EDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
333 PM EDT FRI JUL 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0635 AM     FLOOD            FENWICK ISLAND          38.45N 75.05W
07/10/2020                   SUSSEX             DE   DEPT OF HIGHWAYS

            STANDING WATER ON THE ROADWAY ON ROUTE 1 AT
            ROUTE 54.

0641 AM     FLOOD            3 W LONG NECK           38.62N 75.20W
07/10/2020                   SUSSEX             DE   TRAINED SPOTTER

            FLOODING OF ROADS AND RESIDENTIAL AREAS NEAR
            LONG NECK.

0654 AM     FLASH FLOOD      BETHANY BEACH           38.54N 75.06W
07/10/2020                   SUSSEX             DE   PUBLIC

            ESTIMATED 1 TO 2.5 FEET OF WATER INUNDATING
            ROADS IN BETHANY BEACH. REPORT VIA SOCIAL
            MEDIA WITH VIDEO.

0720 AM     TROPICAL STORM   5 E LONG NECK           38.61N 75.06W
07/10/2020                   SUSSEX             DE   DEPT OF HIGHWAYS

            A DELAWARE DOT GAUGE (DEL17) MEASURED
            SUSTAINED WINDS OF 39 MPH GUSTING TO 47 MPH.
            SUSTAINED WINDS HAVE SINCE BEEN MEASURED AS
            HIGH AS 47 MPH WITH GUSTS TO 57 MPH.

0808 AM     TROPICAL STORM   1 WNW LEWES             38.79N 75.16W
07/10/2020                   SUSSEX             DE   MESONET

            WEATHERFLOW GAUGE XLEW REPORTS A SUSTAINED
            WIND OF 41 MPH WITH GUSTS AS HIGH AS 49 MPH.

0834 AM     FLASH FLOOD      1 NW WILDWOOD           38.99N 74.83W
07/10/2020                   ANZ453             NJ   LAW ENFORCEMENT

            GEORGE REDDING BRIDGE CLOSED DUE TO
            FLOODING.

0836 AM     TROPICAL STORM   1 ENE LEWES             38.78N 75.12W
07/10/2020                   SUSSEX             DE   OTHER FEDERAL

            NOS GAUGE REPORTS SUSTAINED WINDS UP TO 40
            MPH WITH UP TO 49 MPH GUSTS.

0845 AM     FLASH FLOOD      STONE HARBOR            39.05N 74.76W
07/10/2020                   CAPE MAY           NJ   PUBLIC

            SOCIAL MEDIA VIDEO OF WIDESPREAD FLOODED
            ROADS IN STONE HARBOR.

0855 AM     TROPICAL STORM   CAPE HENLOPEN           38.80N 75.09W
07/10/2020                   SUSSEX             DE   OTHER FEDERAL

            39 MPH SUSTAINED WINDS WITH GUSTS UP TO 47
            MPH AT CAPE HENLOPEN.

0908 AM     TROPICAL STORM   2 NNE STRATHMERE        39.22N 74.64W
07/10/2020                   CAPE MAY           NJ   MESONET

            WEATHERFLOW SENSOR REPORTS 44 MPH SUSTAINED
            WINDS WITH GUSTS UP TO 53 MPH.

0910 AM     FLOOD            OCEAN CITY              39.28N 74.57W
07/10/2020                   CAPE MAY           NJ   TRAINED SPOTTER

            FLOODING OF MULTIPLE STREETS REPORTED IN
            OCEAN CITY WITH 1 FOOT OF WATER IN SOME
            AREAS.

0918 AM     FLOOD            SEA ISLE CITY           39.16N 74.69W
07/10/2020                   CAPE MAY           NJ   LAW ENFORCEMENT

            SEVERAL STREETS IN SEA ISLE CITY ARE
            FLOODED.

0922 AM     FLASH FLOOD      RIO GRANDE              39.01N 74.88W
07/10/2020                   CAPE MAY           NJ   DEPT OF HIGHWAYS

            ROUTE 47 CLOSED IN BOTH DIRECTIONS NEAR US 9
            DUE TO FLOODING.

0926 AM     FLOOD            EGG HARBOR TWP          39.40N 74.63W
07/10/2020                   ATLANTIC           NJ   TRAINED SPOTTER

            FLOODED ROADS REPORTED ON TILTON RD IN EGG
            HARBOR TWP/NORTHFIELD AREA.

0935 AM     TROPICAL STORM   BRANDYWINE SHOAL LIGHT  38.99N 75.11W
07/10/2020                   ANZ431             NJ   BUOY

            42 MPH SUSTAINED WINDS WITH GUSTS UP TO 55
            MPH AT BRANDYWINE SHOAL LIGHT.

0945 AM     FLASH FLOOD      MARGATE CITY            39.32N 74.51W
07/10/2020                   ATLANTIC           NJ   EMERGENCY MNGR

            MEDIA RELAYED REPORTS OF SIGNIFICANT
            FLOODING FROM EMERGENCY MANAGEMENT IN
            MARGATE CITY. SOCIAL MEDIA PICTURES SHOW
            ABOUT 1-2 FEET OF WATER ON ROADWAYS. TIME
            ESTIMATED.

0953 AM     TROPICAL STORM   4 SE MYSTIC ISLAND      39.52N 74.32W
07/10/2020                   OCEAN              NJ   MESONET

            WEATHERFLOW SENSOR REPORTS 39 MPH SUSTAINED
            WINDS WITH GUSTS UP TO 48 MPH.

1003 AM     FLASH FLOOD      3 E HAMILTON TWP        39.46N 74.66W
07/10/2020                   ATLANTIC           NJ   DEPT OF HIGHWAYS

            EASTBOUND LANES OF US 322 CLOSED NEAR
            COLOGNE AVE DUE TO FLOODING.

1228 PM     FLASH FLOOD      POINT PLEASANT BEACH    40.09N 74.05W
07/10/2020                   OCEAN              NJ   DEPT OF HIGHWAYS

            FLOODING ON ROUTE 35 NORTH OF WASHINGTON
            AVENUE. ALL LANES CLOSED.

1243 PM     FLASH FLOOD      SEASIDE HEIGHTS         39.95N 74.07W
07/10/2020                   OCEAN              NJ   BROADCAST MEDIA

            MEDIA RELAYS REPORT OF FLOODING ON HIERING
            AVENUE IN SEASIDE HEIGHTS.

1252 PM     FLOOD            SWEDESBORO              39.75N 75.31W
07/10/2020                   GLOUCESTER         NJ   TRAINED SPOTTER

            1 TO 2 FEET OF WATER ON SOME ROADS.

1255 PM     FLASH FLOOD      1 SSW SUMMERDALE        40.02N 75.10W
07/10/2020                   PHILADELPHIA       PA   OTHER FEDERAL

            FRANKFORD CREEK EXCEEDED FLOOD STAGE OF 7
            FEET AND CRESTED ABOVE MODERATE FLOOD STAGE
            AT 8.13 FEET.

1257 PM     FLASH FLOOD      2 NNW SEABROOK FARMS    39.53N 75.24W
07/10/2020                   CUMBERLAND         NJ   DEPT OF HIGHWAYS

            FLOODING ON ROUTE 77 NEAR FRIESBURG ROAD.
            ALL LANES CLOSED.

0114 PM     FLASH FLOOD      1 WSW WANAMASSA         40.23N 74.04W
07/10/2020                   MONMOUTH           NJ   DEPT OF HIGHWAYS

            CORRECTS PREVIOUS FLASH FLOOD REPORT FROM 1
            WSW WANAMASSA. FLOODING ON ROUTE 66 EAST OF
            ROUTE 18. ALL LANES CLOSED AND DETOURED.

0131 PM     FLASH FLOOD      1 NE UPPER PROVIDENCE T 39.94N 75.38W
07/10/2020                   DELAWARE           PA   DEPT OF HIGHWAYS

            REPORTS OF A WATER RESCUE NEAR ROSETREE ROAD
            AND SANDY BANK ROAD.

0137 PM     COASTAL FLOOD    1 SE PLEASANTVILLE      39.38N 74.50W
07/10/2020                   ATLANTIC           NJ   BROADCAST MEDIA

            BLACK HORSE PIKE IN WEST ATLANTIC CITY HAS A
            CLOSED LANE ON EACH SIDE.

0137 PM     TROPICAL STORM   1 SSE COLTS NECK        40.27N 74.17W
07/10/2020                   MONMOUTH           NJ   DEPT OF HIGHWAYS

            TREE DOWN ON ROUTE 18 NORTHBOUND RAMP TO
            ROUTE 34. RAMP CLOSED.

0138 PM     FLASH FLOOD      MANTUA                  39.96N 75.18W
07/10/2020                   PHILADELPHIA       PA   DEPT OF HIGHWAYS

            I-76 WESTBOUND BETWEEN I-676 AND THE SPRING
            GARDEN STREET EXIT CLOSED DUE TO FLOODING. A
            FEW OTHER LANE RESTRICTIONS AND CLOSURES
            REPORTED AROUND THE AREA AS WELL.

0150 PM     FLASH FLOOD      1 SSE GLASSBORO         39.70N 75.11W
07/10/2020                   GLOUCESTER         NJ   DEPT OF HIGHWAYS

            FLOODING SOUTH OF US 322 ON ROUTE 47 IN
            GLASSBORO. ALL LANES CLOSED AND DETOURED.

0227 PM     FLASH FLOOD      PHILADELPHIA            40.05N 75.03W
07/10/2020                   PHILADELPHIA       PA   PUBLIC

            PENNYPACK CREEK HAS EXCEEDED ITS FLOOD STAGE
            OF 7.0 FEET.

0230 PM     FLASH FLOOD      1 NNE WENONAH           39.80N 75.14W
07/10/2020                   GLOUCESTER         NJ   PUBLIC

            GLASSBORO ROAD IN MANTUA CLOSED DUE TO
            FLOODING.

0302 PM     HEAVY RAIN       2 S MILFORD             38.88N 75.44W
07/10/2020  M5.22 INCH       SUSSEX             DE   TRAINED SPOTTER

            STORM TOTAL RAINFALL.

0316 PM     FLASH FLOOD      1 ENE SEWELL            39.77N 75.14W
07/10/2020                   GLOUCESTER         NJ   PUBLIC

            MANTUA CREEK FLOWING OVER GLASSBORO ROAD.

&&
Local storm report, Jul 10, 3:34 PM EDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
334 PM EDT FRI JUL 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0333 PM     HEAVY RAIN       2 NE SOMERS POINT       39.34N 74.58W
07/10/2020  M4.43 INCH       ATLANTIC           NJ   PUBLIC

            4.43 INCHES IN LINWOOD, NJ.

&&
Local storm report, Jul 10, 3:43 PM EDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
343 PM EDT FRI JUL 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0342 AM     HEAVY RAIN       VINELAND                39.49N 75.03W
07/10/2020  M4.20 INCH       CUMBERLAND         NJ   TRAINED SPOTTER

            STORM TOTAL SO FAR. RAIN IS STILL FALLING.

&&

STAARMANN
Local storm report, Jul 10, 3:54 PM EDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
354 PM EDT FRI JUL 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0248 PM     FLASH FLOOD      1 SW TROOPER            40.14N 75.41W
07/10/2020                   MONTGOMERY         PA   TRAINED SPOTTER

            FLOODING REPORTED ALONG A FEW ROAD CROSSINGS
            OF MINE RUN INCLUDING PARK AVE AND CRAWFORD
            ROAD.

&&

STAARMANN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 11:02 AM EDTAreal Flood AdvisoryPHIChester, Delaware4 hr
Jul 10, 11:08 AM EDTAreal Flood AdvisoryPHIBucks, Chester, Delaware, Montgomery, Philadelphia4 hr
Jul 10, 12:56 PM EDTFlash Flood WarningPHIChester, Delaware, Montgomery, Philadelphia4 hr
Jul 10, 1:41 PM EDTAreal Flood AdvisoryPHIBerks, Bucks, Chester, Montgomery4 hr
Jul 10, 3:12 PM EDTAreal Flood AdvisoryPHIBerks, Carbon, Lehigh, Monroe, Northampton4 hr
Jul 10, 3:25 PM EDTAreal Flood AdvisoryPHIChester4 hr
Jul 10, 4:48 PM EDTAreal Flood WarningPHIChester, Delaware, Montgomery, Philadelphia4 hr
Jul 10, 5:39 PM EDTAreal Flood AdvisoryPHIBerks, Bucks, Chester, Montgomery4 hr

Nearby

River Flood Warnings in Pennsylvania, 2020Every river flood warning in 2020

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; the gauge from the NWS water service and the USGS.