Alert archive / Maryland / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

September 7, 2018Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Sep 7, 2018, 10:51 PM EDT for Talbot County, Maryland. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 7, 2018, 10:51 PM EDT (02:51 UTC)
Expired
Sep 7, 2018, 11:30 PM EDT
In force
39 min
Issued by
NWS Philadelphia/Mount Holly

County Talbot County, MD

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.9 hours before the alert went out and 111 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 00:00Z on 2018-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1567 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 00:00Z on 2018-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 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
1567 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
957 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

281 
WWUS81 KPHI 080251
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
1051 PM EDT FRI SEP 7 2018

MDZ019-020-080330-
Talbot-Caroline-
1051 PM EDT FRI SEP 7 2018

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT TALBOT AND
SOUTHWESTERN CAROLINE COUNTIES...

At 1051 PM EDT, a cluster of strong thunderstorms was over Flag
Harbor, moving northeast at 20 mph.

Winds up to 40 mph are possible with this storm.

Locations impacted include...
Easton, Trappe, St. Michaels, Preston, Oxford, Tanyard, Skipton,
Copperville, Matthews, Choptank, Hambleton, Windyhill and Cordova.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3881 7622 3879 7620 3884 7619 3888 7613
      3888 7611 3894 7606 3870 7585 3868 7593
      3857 7602 3859 7606 3863 7608 3864 7615
      3868 7617 3868 7621 3871 7624 3876 7622
      3871 7627 3872 7630 3875 7630
TIME...MOT...LOC 0251Z 234DEG 16KT 3849 7645 

$$

MPS

What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Sep 7, 9:34 PM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Sep 7, 9:34 PM EDT, 1 hour 17 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
934 PM EDT Fri Sep 7 2018

.SYNOPSIS...
A front will stall to our south over the weekend, as high
pressure builds out of southern Canada and into northern New
England by Sunday. This front is expected to lift back northward
Monday as the remnant low of Gordon pass across the Great Lakes
region. A cold front may move into the area on Tuesday as this
low moves across northern New England. There remains uncertainty
on the track and potential impacts of Florence for the Mid
Atlantic and northeast states for the second half of next week.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Heavy showers and thunderstorms with flash flooding abound the
metro Philadelphia area this evening. The rainfall total at KPHL
is now over 4.25 inches for the day ! Numerous reports of
flooding/flash flooding around the region. Earlier today, Cape
May county NJ and Sussex/Kent counties of Delaware also had
locally excessive precipitation.

Regional radars show that the activity across srn NJ is slowly
diminishing and moving E while a pocket in SW NJ remains fairly
active. More showers moving E from MD will affect Delmarva and
srn NJ through the early overnight. Pops generally left at
likely for most areas and will taper down after midnight. No
pops for low chc pops for the far north.

Not many changes made/needed to winds or temps.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH 6 PM SATURDAY/...
To start the day, cold frontal boundary will be continuing to
get suppressed to our south as high pressure builds S/E through
Ontario and Quebec. Expect that some rain/showers will be
ongoing into the morning from around the I-76 corridor
southward. Beyond this point, trend should should be for this to
generally diminish north to south though some uncertainty
exists on how quickly this occurs. NAM keeps rain/showers in
much of the day while GEM Regional (at the opposite extreme)is
forecasting a mainly dry day. Stayed close to a middle ground
between these extremes. In any event, much cooler, drier and
more stable air will be filtering in so threat for thunder and
heavy rainfall will be low. Otherwise, the day should be mostly
cloudy with cool NE breezes and much lower dew points. Expect
highs in the low to mid 70s except mid to upper 60s over the
southern Poconos.

&&

.LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/...
An active period continues to be expected to continue for the
end of the weekend into early next week with periods of heavy
rainfall possible.

For Saturday night through Sunday night, high pressure will
continue pushing across southeast Canada and northern New
England, but lose its effect on our area. This will allow
moisture to lift into our area, north of the frontal boundary
that remains south of our area. Multiple short wave/vorticity
impulses will be moving across our area within the west-
southwest flow aloft, which will lead to enhanced lift across
the area. PW values will increase again to 1.75- 2.00 inches
during this time as well. So we expect rainfall to increase in
coverage Saturday night, most likely across the southern half of
the area, from the Philadelphia metro areas southward. Then
begin to spread northward Sunday into Sunday night affecting
much of the rest of the area. Period of moderate to heavy
rainfall are possible during this time as well.

The remnants of Gordon are forecast to move into the Great
Lakes region on Monday, which will lift the front to our south
across our area as a warm front. The low will then track across
northern New England Monday night into Tuesday, which may then
bring a cold front into our area. Showers and thunderstorms will
remain likely into early next week as these frontal boundaries
affect the area and additional short wave/vorticity impulses
move across the area.

This front may wash out or stall as it moves into our area by
Wednesday. If the front stalls out across or near our area,
showers and thunderstorms could continue to develop again on
Wednesday across portions of the area as additional short
wave/vorticity impulses affect the region, especially eastern
Pennsylvania and northern New Jersey.

The attention for the end of the period turns to Florence and
its possible effects for the east coast. The latest track from
the NHC brings Florence into the western Atlantic by Wednesday.
At that point, there is still uncertainty with the eventual
track of Florence. The risk for impacts along the east coast has
increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At
this point, there is the potential for a period of heavy rain
and strong winds by the end of next week unless the storm takes
a turn out to sea, which still remains a possibility. At this
time and through the weekend, continue to monitor the forecasts
from the NHC on the track of Florence and begin thinking of
possible preparations in case our area does have an impact from
the storm.

One effect regardless of Florence's track will be in increase
in wave action and large swells along the ocean front, which
will lead to increased rip current risk and possible coastal
flooding.

&&

.AVIATION /01Z SATURDAY THROUGH WEDNESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Tonight: Mostly MVFR with some psbl IFR at times with lower CIGS
especially across Delmarva and srn NJ/PA. Winds generally NE at
speeds of 4-8 knots or less except possibly higher in storms.
Moderate Confidence.

Saturday: Mainly MVFR to start the day with gradual improvement
to VFR from north to south but likely only as far south as KPHL
by late day. NE winds 5-10 knots with higher gusts.

OUTLOOK...

Saturday night...VFR possible early, lowering to MVFR overnight
with increasing chance of showers. Easterly winds may gust
15-20 knots.

Sunday-Monday...MVFR, possibly IFR conditions, with periods of
rain. Isolated thunderstorms possible as well. Some rain may be
moderate to heavy at time. Northeast to east winds could gust
20-25 knots, then become southeast by Monday.

Monday night-Wednesday...Conditions may vary between VFR and
MVFR through the period with a chance of showers and
thunderstorms. Winds vary between southeast to south around 5-10
knots.

&&

.MARINE...
Winds/seas will be below advisory criteria through tonight.
However, northeast winds will gradually increase through the
period, with speeds of 10 to 20 kts by the overnight (somewhat
lighter on Delaware Bay). Seas will be building as well,
gradually becoming 3 to 4 feet on the Atlantic waters (waves 2
to 3 feet on Delaware Bay).

A chance of showers and storms exists and this could bring
locally higher winds and seas...especially through this evening.

Saturday...Winds/seas continue to ramp up with SCA conditions
expected. Generally expect northeast winds increasing to 20-25
knots with gusts up to 30 knots and seas increasing to 5 to 8
feet over the ocean waters.

OUTLOOK...

Saturday night...Small Craft Advisory conditions remain across
the waters with gusts 25-30 knots and seas building to 5-8 feet.

Sunday-Sunday night...Gale Force wind gusts of 35-40 knots
possible. Gale Watch in effect.

Monday...Conditions likely to lower to Small Craft Advisory
levels with gusts 25-30 knots lowering during the day and seas
around 5-7 feet remaining.

Monday night-Wednesday...Winds may remain below advisory
levels, however, long period swells from Florence are likely to
reach the waters, leading to 6-9 feet.

RIP CURRENTS...

An enhanced risk of rip currents is expected to continue for
the weekend through next week. First associated with the east-
northeast flow around the high to our north, then with building
seas and swells associated with Florence as it approaches the
western Atlantic.

&&

.TIDES/COASTAL FLOODING...
The astronomical tides associated with the new moon in June,
July and August were particularly high this year. The same is
true with September's new moon which occurs on Sunday.

The high astronomical tides along with a developing onshore
flow will result in some tidal flooding over the next few days
in coastal areas of New Jersey and Delaware, and up along
Delaware Bay and the tidal Delaware River. The evening high
tides will be higher than those in the morning.

We are anticipating only spotty minor flooding with this
evening's high tide, not enough to warrant the issuance of an
advisory at this time.

The northeast wind is expected to strengthen on Saturday and
that should lead to a more widespread minor flooding event with
Saturday evening's high tide. We may very well issue an advisory
for that period of time.

The northeast wind is forecast to increase even more for Sunday
with gale force gusts anticipated. Spotty minor flooding is
expected with Sunday morning's high tide. The evening high tide
on Sunday should produce the most flooding, with widespread
minor flooding in coastal areas of New Jersey and Delaware, and
up along Delaware Bay and the tidal Delaware River. Some
locations should experience moderate flooding.

The onshore flow is expected to begin easing early in the new
week. However, residual minor flooding is likely at least into
Monday night.

&&

.EQUIPMENT...
The KDOX radar remains inoperable. Water damage to the radar
transmitter and product generator is still being assessed. Due
to the unknown extent of the damage, there is no estimated time
for the radar's return to service.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Gale Watch from Sunday morning through late Sunday night for
     ANZ430-431-450>455.
     Small Craft Advisory from 10 AM Saturday to 6 AM EDT Sunday
     for ANZ431-450>455.
     Small Craft Advisory from 6 PM Saturday to 6 AM EDT Sunday for
     ANZ430.

&&

Synopsis...Robertson
Near Term...O'Hara
Short Term...Fitzsimmons
Long Term...Robertson
Aviation...Fitzsimmons/Robertson/PO
Marine...Fitzsimmons/Robertson/PO
Tides/Coastal Flooding...
Equipment...
Hazardous weather outlook, Sep 7, 4:04 PM EDT, 6 hours 47 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
404 PM EDT Fri Sep 7 2018

NJZ001-007>010-PAZ054-055-060>062-101>105-082015-
Sussex-Warren-Morris-Hunterdon-Somerset-Carbon-Monroe-Berks-Lehigh-
Northampton-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-
404 PM EDT Fri Sep 7 2018

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

.DAY ONE...This Afternoon and Tonight.

There is a chance for heavy rainfall and localized flooding with one
or more rounds of storms from this afternoon into tonight.

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

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized flooding.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the east
coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

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

NJZ015-017>019-PAZ070-071-106-082015-
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
404 PM EDT Fri Sep 7 2018

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

.DAY ONE...This Afternoon and Tonight.

There is a chance for heavy rainfall and localized flooding with one
or more rounds of storms from this afternoon into tonight.

Spotty minor tidal flooding is possible with this evening's high
tide.

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

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized flooding.

Minor tidal flooding is likely with the high tides on Saturday,
Sunday and Monday due to high astronomical tides associated with the
new moon and an onshore wind.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the east
coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

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

MDZ008-012-015-019-020-082015-
Cecil-Kent MD-Queen Annes-Talbot-Caroline-
404 PM EDT Fri Sep 7 2018

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...This Afternoon and Tonight.

There is a chance for heavy rainfall and localized flooding with one
or more rounds of storms from this afternoon into tonight.

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

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized flooding.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the east
coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

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

DEZ001>003-NJZ012-013-016-020>023-027-082015-
New Castle-Kent-Inland Sussex-Middlesex-Western Monmouth-Salem-Ocean-
Cumberland-Atlantic-Cape May-Southeastern Burlington-
404 PM EDT Fri Sep 7 2018

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

.DAY ONE...This Afternoon and Tonight.

There is a chance for heavy rainfall and localized flooding with one
or more rounds of storms from this afternoon into tonight.

Spotty minor tidal flooding is possible with this evening's high
tide.

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

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized flooding.

Minor tidal flooding is likely with the high tides on Saturday,
Sunday and Monday due to high astronomical tides associated with the
new moon and an onshore wind.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the east
coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

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

NJZ014-024>026-082015-
Eastern Monmouth-Atlantic Coastal Cape May-Coastal Atlantic-
Coastal Ocean-
404 PM EDT Fri Sep 7 2018

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

.DAY ONE...This Afternoon and Tonight.

There is a moderate risk for the development of dangerous rip
currents.

Spotty minor tidal flooding is possible with this evening's high
tide.

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

The risk for dangerous rip currents will be elevated from the
weekend through much of the new week.

Minor tidal flooding is likely with the high tides on Saturday,
Sunday and Monday due to high astronomical tides associated with the
new moon and an onshore wind.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the east
coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

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

DEZ004-082015-
Delaware Beaches-
404 PM EDT Fri Sep 7 2018

This Hazardous Weather Outlook is for southern Delaware.

.DAY ONE...This Afternoon and Tonight.

There is a low probability of widespread hazardous weather.

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

The risk for dangerous rip currents will be elevated from the
weekend through much of the new week.

Minor tidal flooding is likely with the high tides on Saturday,
Sunday and Monday due to high astronomical tides associated with the
new moon and an onshore wind.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the east
coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

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

ANZ430-431-450>455-082015-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
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-
404 PM EDT Fri Sep 7 2018

...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE SUNDAY
NIGHT...

This Hazardous Weather Outlook is for Atlantic coastal waters and
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.

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

   Gale Watch.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the east
coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Local storm report, Sep 7, 9:49 PM EDT, 1 hour 2 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
949 PM EDT FRI SEP 07 2018

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

0845 PM     HEAVY RAIN       1 NNW WOODBURY          39.85N  75.16W
09/07/2018  M4.53 INCH       GLOUCESTER         NJ   MESONET

&&

CORRECTED EVENT TIME...EVENT

EVENT NUMBER PHI1801494

GORSE
Local storm report, Sep 7, 10:04 PM EDT, 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1004 PM EDT FRI SEP 07 2018

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

1003 PM     HEAVY RAIN       PHILADELPHIA INTL AIRPO 39.89N  75.25W
09/07/2018  M4.43 INCH       PHILADELPHIA       PA   ASOS

            2.66 INCHES FELL IN JUST 38 MINUTES EARLIER.

&&

EVENT NUMBER PHI1801501

GORSE
Local storm report, Sep 7, 10:06 PM EDT, 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1006 PM EDT FRI SEP 07 2018

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

1000 PM     HEAVY RAIN       MANTUA TWP              39.77N  75.18W
09/07/2018  M3.50 INCH       GLOUCESTER         NJ   TRAINED SPOTTER

&&

EVENT NUMBER PHI1801502

GORSE
Local storm report, Sep 7, 10:13 PM EDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1013 PM EDT FRI SEP 07 2018

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

0930 PM     FLASH FLOOD      2 NE WILMINGTON         39.75N  75.50W
09/07/2018                   NEW CASTLE         DE   DEPT OF HIGHWAYS

            GOVERNOR PRINTZ BOULEVARD CLOSED AT EDGEMOOR ROAD DUE
            TO FLASH FLOODING.

&&

EVENT NUMBER PHI1801503

GORSE
Local storm report, Sep 7, 10:24 PM EDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1024 PM EDT FRI SEP 07 2018

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

0300 PM     HEAVY RAIN       ELDORA                  39.22N  74.91W
09/07/2018  M2.00 INCH       CAPE MAY           NJ   TRAINED SPOTTER

0300 PM     HEAVY RAIN       1 NNW DENNISVILLE       39.20N  74.83W
09/07/2018  M2.48 INCH       CAPE MAY           NJ   MESONET

0400 PM     HEAVY RAIN       WOODBINE                39.23N  74.81W
09/07/2018  M2.64 INCH       CAPE MAY           NJ   TRAINED SPOTTER

            FELL BETWEEN ABOUT 3 AND 4 PM.

0658 PM     FLASH FLOOD      1 WSW WESTVILLE         39.86N  75.15W
09/07/2018                   GLOUCESTER         NJ   DEPT OF HIGHWAYS

            FLASH FLOODING ON I-295 IN BOTH DIRECTIONS AT EXIT 23.
            SOME LANES ARE CLOSED.

0715 PM     FLASH FLOOD      WESTVILLE               39.87N  75.13W
09/07/2018                   GLOUCESTER         NJ   DEPT OF HIGHWAYS

            ALL LANES CLOSED ON NJ 45 SOUTHBOUND AT US 130 DUE TO
            FLASH FLOODING.

0715 PM     FLOOD            POTTSTOWN               40.25N  75.64W
09/07/2018                   MONTGOMERY         PA   SOCIAL MEDIA

            STREET FLOODING REPORTED.

0718 PM     FLASH FLOOD      WESTVILLE               39.87N  75.13W
09/07/2018                   GLOUCESTER         NJ   DEPT OF HIGHWAYS

            ALL LANES CLOSED ON US 130 SOUTHBOUND APPROACHING NJ 45
            DUE TO FLASH FLOODING.

0725 PM     TSTM WND DMG     2 WNW GLOUCESTER TWP    39.80N  75.06W
09/07/2018                   CAMDEN             NJ   SOCIAL MEDIA

            SEVERAL TREE LIMBS DOWN NEAR BLACKWOOD. TIME ESTIMATED
            FROM RADAR.

0735 PM     HEAVY RAIN       DEPTFORD                39.83N  75.16W
09/07/2018  M2.40 INCH       GLOUCESTER         NJ   TRAINED SPOTTER

            RAINFALL WITHIN 45 MINUTES.

0745 PM     FLASH FLOOD      2 S DEPTFORD TWP        39.79N  75.11W
09/07/2018                   GLOUCESTER         NJ   SOCIAL MEDIA

            CAR FLOATING IN FLOOD WATERS ON ROUTE 55 AT EXIT 56.
            POLICE ARRIVING AND IT IS UNKNOWN ABOUT THE OCCUPANTS.

0754 PM     HEAVY RAIN       PHILADELPHIA INTL AIRPO 39.89N  75.25W
09/07/2018  M3.40 INCH       PHILADELPHIA       PA   ASOS

            2.66 INCHES OF RAIN FELL IN JUST 38 MINUTES.

0800 PM     FLASH FLOOD      CAMDEN                  39.94N  75.11W
09/07/2018                   CAMDEN             NJ   DEPT OF HIGHWAYS

            RIVER LINE SERVICE SUSPENDED IN BOTH DIRECTIONS BETWEEN
            THE WALTER RAND TRANSPORTATION CENTER AND THE WATERFRONT
            ENTERTAINMENT COMPLEX DUE TO FLASH FLOODING.

0800 PM     HEAVY RAIN       WEST DEPTFORD           39.83N  75.20W
09/07/2018  M3.03 INCH       GLOUCESTER         NJ   NJWXNET

0830 PM     HEAVY RAIN       1 SSE WOODBURY HEIGHTS  39.81N  75.15W
09/07/2018  M3.31 INCH       GLOUCESTER         NJ   MESONET

0845 PM     HEAVY RAIN       1 NNW WOODBURY          39.85N  75.16W
09/07/2018  M4.53 INCH       GLOUCESTER         NJ   MESONET

0854 PM     HEAVY RAIN       PHILADELPHIA INTL AIRPO 39.89N  75.25W
09/07/2018  M4.25 INCH       PHILADELPHIA       PA   ASOS

            2.66 INCHES FELL IN JUST 38 MINUTES EARLIER.

0900 PM     HEAVY RAIN       1 N CHESTER             39.87N  75.38W
09/07/2018  M2.50 INCH       DELAWARE           PA   SOCIAL MEDIA

            IN PARKSIDE.

0930 PM     FLASH FLOOD      2 NE WILMINGTON         39.75N  75.50W
09/07/2018                   NEW CASTLE         DE   DEPT OF HIGHWAYS

            GOVERNOR PRINTZ BOULEVARD CLOSED AT EDGEMOOR ROAD DUE
            TO FLASH FLOODING.

1000 PM     HEAVY RAIN       MANTUA TWP              39.77N  75.18W
09/07/2018  M3.50 INCH       GLOUCESTER         NJ   TRAINED SPOTTER

1003 PM     HEAVY RAIN       PHILADELPHIA INTL AIRPO 39.89N  75.25W
09/07/2018  M4.43 INCH       PHILADELPHIA       PA   ASOS

            2.66 INCHES FELL IN JUST 38 MINUTES EARLIER.

&&

EVENT NUMBER PHI1801484 PHI1801485 PHI1801492 PHI1801487 PHI1801488
PHI1801500 PHI1801489 PHI1801491 PHI1801486 PHI1801496 PHI1801490
PHI1801493 PHI1801497 PHI1801495 PHI1801494 PHI1801498 PHI1801499
PHI1801503 PHI1801502 PHI1801501

Gorse
Special weather statement, Sep 7, 10:51 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
1051 PM EDT FRI SEP 7 2018

MDZ019-020-080330-
Talbot-Caroline-
1051 PM EDT FRI SEP 7 2018

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT TALBOT AND
SOUTHWESTERN CAROLINE COUNTIES...

At 1051 PM EDT, a cluster of strong thunderstorms was over Flag
Harbor, moving northeast at 20 mph.

Winds up to 40 mph are possible with this storm.

Locations impacted include...
Easton, Trappe, St. Michaels, Preston, Oxford, Tanyard, Skipton,
Copperville, Matthews, Choptank, Hambleton, Windyhill and Cordova.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3881 7622 3879 7620 3884 7619 3888 7613
      3888 7611 3894 7606 3870 7585 3868 7593
      3857 7602 3859 7606 3863 7608 3864 7615
      3868 7617 3868 7621 3871 7624 3876 7622
      3871 7627 3872 7630 3875 7630
TIME...MOT...LOC 0251Z 234DEG 16KT 3849 7645

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 8:32 PM EDTFlash Flood WarningPHICamden, Gloucester, Salem2 hr
Sep 7, 10:41 PM EDTAreal Flood WarningPHICamden, Gloucester8 hr
Sep 7, 11:19 PM EDTRip Current StatementPHIAtlantic, Cape May, Monmouth, Ocean9 days
Sep 7, 11:20 PM EDTAreal Flood WarningPHICamden, Gloucester, Salem4 hr
Sep 8, 1:21 AM EDTSpecial Marine WarningPHI54 min
Sep 8, 1:27 AM EDTSpecial Marine WarningPHI63 min
Sep 8, 2:17 AM EDTSpecial Marine WarningPHI42 min
Sep 8, 2:43 AM EDTAreal Flood AdvisoryPHIBurlington, Mercer, Middlesex, Monmouth, Ocean6 hr
Sep 8, 3:34 AM EDTFlood WatchPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 9 more60 hr
Sep 8, 4:29 AM EDTAreal Flood AdvisoryPHIBurlington4 hr
Sep 8, 5:31 AM EDTCoastal Flood WatchPHICape May11 hr
Sep 8, 5:31 AM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Cumberland, Middlesex, Monmouth, Ocean and 1 more21 hr
Sep 8, 5:31 AM EDTCoastal Flood AdvisoryPHIBurlington, Camden, Gloucester, Mercer24 hr
Sep 8, 8:15 AM EDTAreal Flood AdvisoryPHICamden, Gloucester, Salem119 min
Sep 8, 3:36 PM EDTGale WarningPHI48 hr
Sep 8, 4:49 PM EDTCoastal Flood WatchPHIAtlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean and 1 more7 hr
Sep 8, 4:49 PM EDTCoastal Flood WarningPHICape May, Cumberland6 hr
Sep 8, 4:49 PM EDTHigh Surf AdvisoryPHIAtlantic, Cape May, Monmouth, Ocean60 hr
Sep 8, 2:41 AM EDTAreal Flood WarningPHIBerks, Montgomery4 hr
Sep 7, 11:40 PM EDTSpecial Weather StatementPHISussex35 min
Sep 8, 12:11 AM EDTFlash Flood WarningPHISussex4 hr
Sep 8, 11:54 AM EDTSpecial Weather StatementPHISussex21 min
Sep 7, 11:36 PM EDTSpecial Weather StatementPHITalbot24 min
Sep 8, 2:19 AM EDTSpecial Weather StatementPHIQueen Anne's41 min
Sep 8, 3:14 AM EDTFlash Flood WarningPHIKent, Queen Anne's, Talbot3 hr
Sep 8, 6:01 AM EDTAreal Flood WarningPHIKent, Queen Anne's, Talbot4 hr

Nearby

Special Weather Statements in Maryland, 2018Every special weather statement in 2018

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.