Alert archive / Maryland / Special Weather Statements in 2017

Special Weather Statement, NWS Philadelphia/Mount Holly

August 2, 2017Kent County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 2, 2017, 8:38 PM EDT for Kent County, Maryland. It was in force for 37 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
Aug 2, 2017, 8:38 PM EDT (00:38 UTC)
Expired
Aug 2, 2017, 9:15 PM EDT
In force
37 min
Issued by
NWS Philadelphia/Mount Holly

County Kent County, MD

The radar

The Dover AFB radar (KDOX), 75 km from the middle of the area, began a volume at 00:38 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 0.6 hours before the alert went out and 115 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, Washington/Dulle, VA at 00:00Z on 2017-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 691 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2017-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
691 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1605 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

433 
WWUS81 KPHI 030038
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
838 PM EDT WED AUG 2 2017

MDZ008-012-015-030115-
Queen Anne's-Cecil-Kent-
838 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN QUEEN ANNE'S AND
KENT COUNTIES...

At 838 PM EDT, a strong thunderstorm was located near Rock Hall, or 9
miles east of Millers Island, moving east at 30 mph.

Winds up to 50 mph and pea size hail are possible with this storm.

Locations impacted include...
Chestertown, Rock Hall, Church Hill, Millington, Sudlersville, Old
Town, Langford, Newtown, Starkey Corner, Morgnec, Massey, Crumpton,
Kennedyville, Galena, Barclay and Kingstown.

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

LAT...LON 3926 7622 3928 7620 3929 7617 3930 7618
      3932 7618 3937 7592 3936 7589 3937 7583
      3912 7581 3909 7623 3913 7625 3915 7628
      3917 7628
TIME...MOT...LOC 0038Z 261DEG 28KT 3921 7625 

$$

po

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 Aug 2, 7:53 PM EDT, 45 minutes earlier.

Area forecast discussion, Aug 2, 7:53 PM EDT, 45 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
753 PM EDT Wed Aug 2 2017

.SYNOPSIS...
A generally steady southerly flow will continue through the end
of the week until a warm front approaches from the south late
Friday, followed by a cold front that moves through Friday night
into early Saturday. High pressure builds into the area Sunday. A
low pressure system is expected to pass near or north of the area
early next week. High pressure then builds back into the area
toward the middle of next week.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
Showers and thunderstorms winding down across the northern two-
thirds of the forecast area, but showers continue south and east
of I-95 in southeast NJ, and thunderstorms continue over
northeast MD and DE. The atmosphere continues to stabilize from
the widespread heavy rain across the region. SB CAPE values are
still up around 1500 J/kg, but SB CIN values are around -150 to
-250 J/kg.

The last of the thunderstorms are moving through the Delmarva,
but with loss of diurnal heating, would expect those to taper
off as well. Severe threat is winding down, but there may be
some localized flooding across the Delmarva with those storms
for at least the next couple of hours.

Otherwise, skies clear out during the evening, and winds become
nearly calm. With abundant low level moisture across the
region, can expect at least areas of fog to develop after
midnight tonight, and patchy dense fog is possible in the pre-
dawn hours as well. Best chances will be outside the Philly
metro area, and areas where it rained heaviest.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH 6 PM THURSDAY/...
The Mid-Atlantic region will remain downstream of a broad
large-scale trough over Hudson Bay that extends southward
through the Upper Midwest and Mississippi Valley. There will be
a stronger shortwave disturbance embedded within the broad
trough that is expected to progress eastward toward the Great
Lakes region. With SW flow downstream of this system, a frontal
boundary will remain stationary across the Midwest/Great Lakes
region on Thursday.

No significant changes in the airmass is expected Thursday.
Accordingly, expect high temperatures on Thursday that are very
similar to what was observed today and yesterday (generally
85-90F, except cooler near the coast and at higher elevations in
NE PA and NW NJ). Daytime heating will once again destabilize
the atmosphere, which should lead to convective initiation as
early as late morning but more likely during the early to mid
afternoon. BUFKIT forecast soundings from the NAM show a
moderately unstable airmass at peak heating with MLCAPE between
1500-200 J/kg (similar to today) while MLCAPE values are not
quite as extreme on the GFS (1000-1500 J/kg). Models show even
less of a forcing mechanism on the synoptic scale than today as
there doesn't appear to be an upper shortwave disturbance or
even a surface trough to provide a source of lift or focus for
convection. The main source of lift will likely be differential
heating/terrain circulations across the higher terrain in E PA
and NW NJ. Accordingly, chance PoPs were confined to west of the
Fall Line. PoPs then decrease to slight chance farther east
into I-95 and the coastal plain, although there could be a focus
for additional storms along the sea-breeze front in NJ.

Storms on Thursday will once again be slow movers, which could
potentially result in locally heavy rainfall and poor drainage
flooding or perhaps flash flooding. There is a limited potential
for pulse severe wet microbursts during peak heating hours.

&&

.LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/...
For Thursday night into Friday, a generally steady southerly
flow will remain across the area while a southwest flow aloft
continues. The southerly flow will keep warm and humid
conditions across the area, which will keep some instability
across the area Thursday night into Friday. A couple of weak
vorticity impulses will slide across the area with the southwest
flow aloft. This combination of instability and lift from the
vorticity impulses will keep a chance of isolated/scattered
showers and thunderstorms Thursday night into Friday.

By late Friday afternoon, a warm front may lift toward the
area, ahead of an approaching cold front. The cold front is
expected to move across the area late Friday night into Saturday
morning. There will remain instability ahead of the frontal
boundary, although it will weaken some overnight. Nevertheless,
there will continue to be a chance of showers and thunderstorms
overnight Friday into Saturday morning. PW values increase ahead
of the front, so there could be some heavy rainfall overnight
Friday into Saturday morning.

The frontal boundary is expected to move offshore during the
daytime morning hours Saturday. Behind it, drier and cooler
conditions are expected for the remainder of Saturday, through
Sunday night.

For Monday into Tuesday, an area of low pressure is expected to
lift near or to the north of the area, pulling a warm front,
then a cold front through. The warm front is forecast to lift
into the area early Monday, then the cold front is expected to
move through overnight Monday into Tuesday morning. PW values
could approach or exceed 2 inches during this time, which could
lead to period of heavy rainfall.

Behind the cold front, drier conditions are expected to build
across the region as high pressure begins to build in from the
west through Wednesday.

&&

.AVIATION /00Z THURSDAY THROUGH MONDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Showers and thunderstorms are winding down. Some lingering -RA
possible at KMIV/KACY, and a few of the thunderstorms may pass
just outside of KMIV/KACY through 01z, but the bulk of the
activity is coming to an end.

Generally VFR initially. Areas of fog will develop between
after midnight tonight and in the pre-dawn hours Thursday. IFR
conditions are possible, as well as VSBY possibly less than 1SM.

VFR after 12Z Thursday.

Another round of convection possible after 16Z Thursday with
possible sub-VFR conditions. Due to the scattered nature of
these storms, and low confidence in any given storm passing over
a given terminal, will leave out of the 00Z TAF package.

LGT/VRB winds tonight, and then S-SW winds 5-10 KT on Thursday.

OUTLOOK...

Thursday night-Friday...Generally VFR. Chance of scattered
showers or thunderstorms which may temporarily lower conditions.

Friday night-Saturday...CIGS lowering overnight Friday into
Saturday morning, improving during the day. Chance of scattered
showers and thunderstorms which may temporarily lead to lower
conditions Friday night into Saturday morning. South-southwest
winds Friday night, becoming northwest gusting to 20 knots
during the afternoon behind a cold front.

Saturday night-Sunday night...Generally VFR. North-northeast
winds 10-15 knots, diminishing overnight Saturday into Sunday
morning. Winds becoming northwest then westerly.

Monday...Lowering conditions with rainfall spreading across the
area.

&&

.MARINE...
Winds and seas below SCA threshold. The threat of storms over
the waters will continue thru about 02Z. Gusty winds may
necessitate SMWs for the strongest storms.

RIP CURRENTS...

There is a low risk of rip currents through this evening.

There is a low risk for the development of dangerous rip
currents on Thursday. A similar setup is expected Thursday,
although conditions could approach moderate during the afternoon
at NJ ocean beaches as southerly winds ramp up to around 15 mph
nearshore. An E-SE 8 second swell is expected to persist
through Thursday as well.

OUTLOOK...

Thursday night-Sunday night...Sub Small Craft Advisory conditions
expected through the period. Winds may gust around 20 knots at
times. A cold front is expected on Saturday with showers and
thunderstorms possible.

Monday...Conditions may approach Small Craft Advisory levels by the
end of the day Monday into Monday night.

&&

.EQUIPMENT...
KDOX has returned to service earlier this evening. TPHL
terminal doppler radar remains out of service. TPHL has been
down since July 29. There is still no estimated time to return
to service as FAA technicians are waiting for a part needed to
fix TPHL.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

Synopsis...Robertson
Near Term...Klein/MPS
Short Term...Klein
Long Term...Robertson
Aviation...Klein/Robertson/MPS
Marine...Klein/Robertson
Equipment...
Hazardous weather outlook, Aug 2, 4:34 PM EDT, 4 hours 4 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
434 PM EDT Wed Aug 2 2017

NJZ001-007>010-012-015-PAZ054-055-060>062-070-071-101>106-032045-
Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-Carbon-
Monroe-Berks-Lehigh-Northampton-Delaware-Philadelphia-
Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
434 PM EDT Wed Aug 2 2017

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...Tonight.

Scattered thunderstorms will continue through the early evening. A
few of these storms could produce locally damaging winds and large
hail. These storms will also be moving slowly, resulting in locally
heavy rainfall and the potential for flooding, especially in urban
and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Scattered thunderstorms are expected Thursday afternoon and evening.
These storms will be moving slowly, resulting in locally heavy
rainfall and the potential for flooding, especially in urban and poor
drainage areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

DEZ001>003-MDZ008-012-015-019-020-NJZ013-016>023-027-032045-
New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot-
Caroline-Western Monmouth-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Southeastern Burlington-
434 PM EDT Wed Aug 2 2017

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

.DAY ONE...Tonight.

Scattered thunderstorms will continue through the early evening. A
few of these storms could produce locally damaging winds and large
hail. These storms will also be moving slowly, resulting in locally
heavy rainfall and the potential for flooding, especially in urban
and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

DEZ004-NJZ014-024>026-032045-
Delaware Beaches-Eastern Monmouth-Atlantic Coastal Cape May-
Coastal Atlantic-Coastal Ocean-
434 PM EDT Wed Aug 2 2017

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

.DAY ONE...Tonight.

Scattered thunderstorms will continue through the early evening. A
few of these storms could produce locally damaging winds and large
hail. These storms will also be moving slowly, resulting in locally
heavy rainfall and the potential for flooding, especially in urban
and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ430-431-450>455-032045-
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-
434 PM EDT Wed Aug 2 2017

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

.DAY ONE...Tonight.

Scattered thunderstorms will continue through the early evening. A
few of these storms could produce locally gusty winds and higher
waves.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Aug 2, 6:42 PM EDT, 1 hour 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
642 PM EDT WED AUG 02 2017

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

0623 PM     MARINE TSTM WIND TUCKERTON               39.60N  74.33W
08/02/2017  M47 MPH          OCEAN              NJ   WEATHERFLOW

&&

EVENT NUMBER PHI1701365

STAFF
Special weather statement, Aug 2, 6:52 PM EDT, 1 hour 46 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
652 PM EDT WED AUG 2 2017

NJZ023-024-022330-
Atlantic Coastal Cape May-Cape May-
652 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT CAPE MAY COUNTY...

At 651 PM EDT, a strong thunderstorm was located over Dennisville,
or 11 miles southwest of Ocean City, moving east at 20 mph. Other
thunderstorms will develop across southern Cape May county through
730 PM.

Pea size hail is possible with these storms.

Locations impacted include...
Ocean City, Cape May, North Wildwood, Wildwood Crest, Woodbine, Sea
Isle City, Avalon, West Cape May, Stone Harbor, Cape May Court House,
Scotch Bonnet, Beesleys Point, Seaville, Dennisville, Eldora, North
Cape May, Belleplain Forest, Marmora, Diamond Beach and Green Creek.

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

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

LAT...LON 3920 7466 3910 7470 3903 7479 3899 7479
      3894 7486 3893 7497 3896 7496 3897 7494
      3897 7496 3901 7496 3911 7489 3916 7489
      3920 7492 3927 7489 3928 7462 3926 7462
      3928 7461 3928 7456
TIME...MOT...LOC 2251Z 277DEG 18KT 3918 7478

PO
Special weather statement, Aug 2, 7:30 PM EDT, 1 hour 8 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
730 PM EDT WED AUG 2 2017

DEZ002-003-MDZ015-019-020-030015-
Inland Sussex-Kent-Queen Anne's-Talbot-Caroline-
730 PM EDT WED AUG 2 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WEST CENTRAL SUSSEX...
SOUTHERN KENT...NORTHEASTERN TALBOT...CENTRAL QUEEN ANNE'S AND
CAROLINE COUNTIES...

At 729 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Sudlersville to near Wye Mills.
Movement was southeast at 20 mph.

Winds up to 50 mph and pea size hail are possible with these storms.

Locations impacted include...
Easton, Centerville, Denton, Centreville, Harrington, Greensboro,
Oakland, Ridgely, Church Hill, Sudlersville, Goldsboro, Queen Anne,
Woodside, Viola, Smithville, Grasonville, Starr, Jumptown, Agner and
Sandtown.

Torrential rainfall is also occurring with these storms, 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 3921 7590 3902 7539 3871 7574 3883 7618
      3882 7618 3886 7621 3886 7626 3887 7621
      3890 7621 3891 7625 3891 7620 3895 7621
      3890 7629
TIME...MOT...LOC 2329Z 294DEG 19KT 3913 7587 3890 7615

po
Local storm report, Aug 2, 7:50 PM EDT, 48 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
750 PM EDT WED AUG 02 2017

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

0725 PM     HEAVY RAIN       WEATHERLY               40.94N  75.82W
08/01/2017  M2.41 INCH       CARBON             PA   MESONET

            1.81 IN 1 HR ENDING 654P. WUNDERGROUND

1219 PM     HAIL             DENVILLE                40.89N  74.48W
08/02/2017  M0.75 INCH       MORRIS             NJ   TRAINED SPOTTER

            DIME-SIZED HAIL.

1223 PM     HAIL             ROCKLEDGE               40.08N  75.09W
08/02/2017  M0.88 INCH       MONTGOMERY         PA   TRAINED SPOTTER

            NICKEL-SIZED HAIL.

1235 PM     HAIL             ROCKAWAY                40.90N  74.51W
08/02/2017  M0.25 INCH       MORRIS             NJ   SOCIAL MEDIA

            PEA-SIZED HAIL

1235 PM     HAIL             ISELIN                  40.57N  74.32W
08/02/2017  M0.25 INCH       MIDDLESEX          NJ   SOCIAL MEDIA

            PEA-SIZED HAIL

1238 PM     TSTM WND GST     PORT READING            40.56N  74.25W
08/02/2017  M48 MPH          MIDDLESEX          NJ   TRAINED SPOTTER

1242 PM     TSTM WND DMG     PERTH AMBOY             40.52N  74.27W
08/02/2017                   MIDDLESEX          NJ   TRAINED SPOTTER

            TREE BRANCHES AND POWER LINES DOWN

1242 PM     FLOOD            WOODBRIDGE              40.56N  74.28W
08/02/2017                   MIDDLESEX          NJ   TRAINED SPOTTER

            GROVE STREET ENTRANCE RAMP TO ROUTE 9 NORTH FLOODED
            WITH CARS STUCK IN WATER.

1244 PM     TSTM WND GST     POCONO MOUNTAINS AIRPOR 41.14N  75.38W
08/02/2017  M47 MPH          MONROE             PA   ASOS

1256 PM     HAIL             TALLEYVILLE             39.81N  75.55W
08/02/2017  M0.25 INCH       NEW CASTLE         DE   TRAINED SPOTTER

            PEA-SIZED HAIL.

0110 PM     HAIL             WILMINGTON              39.73N  75.53W
08/02/2017  M0.25 INCH       NEW CASTLE         DE   SOCIAL MEDIA

            PEA-SIZED HAIL.

0111 PM     HAIL             WILMINGTON              39.73N  75.53W
08/02/2017  M0.25 INCH       NEW CASTLE         DE   TRAINED SPOTTER

            PEA-SIZED HAIL

0112 PM     HAIL             CONSHOHOCKEN            40.08N  75.29W
08/02/2017  M0.25 INCH       MONTGOMERY         PA   SOCIAL MEDIA

            PEA-SIZED HAIL

0113 PM     LIGHTNING        WHITEMARSH              40.12N  75.22W
08/02/2017                   MONTGOMERY         PA   AMATEUR RADIO

            WIRES DOWN AND STRUCTURE FIRE.

0117 PM     HAIL             WILMINGTON              39.73N  75.53W
08/02/2017  M0.25 INCH       NEW CASTLE         DE   TRAINED SPOTTER

            PEA-SIZED HAIL

0122 PM     TSTM WND GST     MORRISTOWN              40.43N  74.25W
08/02/2017  M43 MPH          MIDDLESEX          NJ   TRAINED SPOTTER

0123 PM     HAIL             WAYNE                   40.04N  75.39W
08/02/2017  M0.25 INCH       DELAWARE           PA   TRAINED SPOTTER

            PEA-SIZED HAIL

0123 PM     FLOOD            PHILADELPHIA            39.95N  75.16W
08/02/2017                   PHILADELPHIA       PA   DEPT OF HIGHWAYS

            FLOODING ON US-1 SOUTHBOUND AT I-76 WEST.

0130 PM     HAIL             KING OF PRUSSIA         40.10N  75.38W
08/02/2017  M0.88 INCH       MONTGOMERY         PA   SOCIAL MEDIA

            NICKEL-SIZED HAIL.

0135 PM     LIGHTNING        KING OF PRUSSIA         40.10N  75.38W
08/02/2017                   MONTGOMERY         PA   SOCIAL MEDIA

            TREE WITH AN ESTIMATED DIAMETER OF 4 INCHES SNAPPED.

0144 PM     TSTM WND GST     PHILADELPHIA INTL AIRPO 39.89N  75.25W
08/02/2017  M45 MPH          PHILADELPHIA       PA   ASOS

0153 PM     HEAVY RAIN       POCONO MOUNTAINS MUNICI 41.14N  75.38W
08/02/2017  M1.13 INCH       MONROE             PA   ASOS

            6 HOUR RAINFALL.

0205 PM     HAIL             HARMONY TWP             40.75N  75.13W
08/02/2017  M0.25 INCH       WARREN             NJ   TRAINED SPOTTER

            PEA-SIZED HAIL.

0205 PM     TSTM WND DMG     BEDMINSTER              40.43N  75.18W
08/02/2017                   BUCKS              PA   911 CALL CENTER

            TREE DOWN IN BEDMINSTER. TIME ESTIMATED BY RADAR.

0205 PM     TSTM WND DMG     SPRINGFIELD TWP         40.51N  75.31W
08/02/2017                   BUCKS              PA   911 CALL CENTER

            TREE DOWN IN SPRINGFIELD. TIME ESTIMATED BY RADAR.

0205 PM     TSTM WND DMG     HAYCOCK TWP             40.48N  75.26W
08/02/2017                   BUCKS              PA   911 CALL CENTER

            TREE DOWN IN HAYCOCK. TIME ESTIMATED BY RADAR.

0211 PM     HAIL             CHESTERBROOK            40.08N  75.46W
08/02/2017  M1.00 INCH       CHESTER            PA   TRAINED SPOTTER

            QUARTER-SIZED HAIL.

0213 PM     FLOOD            PHILADELPHIA            39.95N  75.16W
08/02/2017                   PHILADELPHIA       PA   DEPT OF HIGHWAYS

            FLOODING ON I-95 NORTHBOUND AT EXIT 17 - PA 611 BROAD
            STREET.

0215 PM     FLOOD            PHILADELPHIA            39.95N  75.16W
08/02/2017                   PHILADELPHIA       PA   DEPT OF HIGHWAYS

            FLOODING ON I-95 SOUTHBOUND AT EXIT 19 - I-76 EAST/WALT
            WHITMAN BRIDGE.

0225 PM     HAIL             VOORHEES                39.85N  74.96W
08/02/2017  M0.25 INCH       CAMDEN             NJ   PUBLIC

            PEA-SIZED HAIL.

0225 PM     LIGHTNING        MOUNT LAUREL            39.93N  74.89W
08/02/2017                   BURLINGTON         NJ   TRAINED SPOTTER

            STRUCTURE FIRE.

0228 PM     HAIL             EASTON                  40.69N  75.22W
08/02/2017  M0.25 INCH       NORTHAMPTON        PA   SOCIAL MEDIA

            PEA-SIZED HAIL.

0230 PM     FLOOD            PHILLIPSBURG            40.69N  75.19W
08/02/2017                   WARREN             NJ   TRAINED SPOTTER

            WATER ESTIMATED AT 1-2 FEET DEEP ON ROUTE 22 AT
            ROSEBURY STREET.

0230 PM     LIGHTNING        MARLTON                 39.90N  74.93W
08/02/2017                   BURLINGTON         NJ   SOCIAL MEDIA

            HOUSE FIRE.

0243 PM     HAIL             MOORE TWP               40.78N  75.43W
08/02/2017  M0.75 INCH       NORTHAMPTON        PA   SOCIAL MEDIA

            HAIL RANGED FROM PEA TO PENNY SIZE.

0245 PM     FLOOD            EASTON                  40.69N  75.22W
08/02/2017                   NORTHAMPTON        PA   SOCIAL MEDIA

            ROADS CLOSED DUE TO FLOODING.

0246 PM     FLOOD            MOORESTOWN              39.97N  74.94W
08/02/2017                   BURLINGTON         NJ   LAW ENFORCEMENT

            LOCUST STREET CLOSED BETWEEN KENILWORTH AVE AND THE
            RAILROAD DUE TO FLOODING.

0256 PM     HAIL             CHESTER                 40.79N  74.69W
08/02/2017  M0.25 INCH       MORRIS             NJ   SOCIAL MEDIA

            PEA-SIZED HAIL.

0300 PM     HAIL             LOWER NAZARETH TWP      40.70N  75.33W
08/02/2017  M0.25 INCH       NORTHAMPTON        PA   SOCIAL MEDIA

            PEA-SIZED HAIL

0300 PM     HAIL             SPARTA                  41.03N  74.64W
08/02/2017  M0.25 INCH       SUSSEX             NJ   TRAINED SPOTTER

            PEA-SIZED HAIL.

0309 PM     HAIL             BUDD LAKE               40.87N  74.74W
08/02/2017  M0.25 INCH       MORRIS             NJ   AMATEUR RADIO

            PEA-SIZED HAIL.

0314 PM     HAIL             PORTLAND                40.92N  75.10W
08/02/2017  M0.25 INCH       NORTHAMPTON        PA   AMATEUR RADIO

            PEA-SIZED HAIL.

0314 PM     TSTM WND DMG     JACKSON TWP             40.12N  74.35W
08/02/2017                   OCEAN              NJ   911 CALL CENTER

            TREES DOWN NEAR JACKSON. TIME ESTIMATED BY RADAR.

0315 PM     FLOOD            FLANDERS                40.85N  74.69W
08/02/2017                   MORRIS             NJ   TRAINED SPOTTER

            INTERSECTION OF ROUTE 206 AND FLANDERS BARTLEY ROAD
            FLOODED.

0322 PM     HEAVY RAIN       JACKSON TWP             40.12N  74.35W
08/02/2017  M1.56 INCH       OCEAN              NJ   TRAINED SPOTTER

            50-MINUTE RAINFALL.

0327 PM     HAIL             BLAIRSTOWN              40.98N  74.96W
08/02/2017  M0.25 INCH       WARREN             NJ   TRAINED SPOTTER

            PEA-SIZED HAIL.

0346 PM     FLOOD            WILMINGTON              39.73N  75.53W
08/02/2017                   NEW CASTLE         DE   SOCIAL MEDIA

            UNION STREET FLOODED WITH AN ESTIMATED 1-2 FEET OF
            WATER.

0348 PM     MARINE TSTM WIND 1 SSE WILMINGTON        39.72N  75.53W
08/02/2017  M44 MPH          ANZ430             DE   WEATHERFLOW

            PORT OF WILMINGTON

0402 PM     HAIL             HIGHLAND PARK           40.50N  74.43W
08/02/2017  M0.25 INCH       MIDDLESEX          NJ   TRAINED SPOTTER

            PEA-SIZED HAIL.

0405 PM     LIGHTNING        HIGHLAND PARK           40.50N  74.43W
08/02/2017                   MIDDLESEX          NJ   TRAINED SPOTTER

            STRUCTURE FIRE.

0405 PM     TSTM WND DMG     EDISON                  40.52N  74.41W
08/02/2017                   MIDDLESEX          NJ   911 CALL CENTER

            LARGE BRANCHES DOWN.

0407 PM     TSTM WND DMG     1 WNW HIGHLAND PARK     40.51N  74.45W
08/02/2017                   MIDDLESEX          NJ   SOCIAL MEDIA

            LARGE TREE BRANCHES SNAPPED IN JOHNSON PARK

0408 PM     FLOOD            EDISON                  40.52N  74.41W
08/02/2017                   MIDDLESEX          NJ   FIRE DEPT/RESCUE

            OLD POST ROAD AT VIOLET PLACE FLOODED.

0429 PM     TSTM WND DMG     MOUNT ROYAL             39.81N  75.21W
08/02/2017                   GLOUCESTER         NJ   EMERGENCY MNGR

            SEVERAL TREES DOWN.

0442 PM     MARINE TSTM WIND SHIP JOHN SHOAL NOS     39.30N  75.38W
08/02/2017  M40 MPH          ANZ430             NJ   NOS PLATFORM

0445 PM     FLASH FLOOD      2 SE EDISON             40.50N  74.39W
08/02/2017                   MIDDLESEX          NJ   TRAINED SPOTTER

            WATER RESCUE NEAR INTERSECTION OF MEADOW RD AND CLIFTON
            ST AFTER NEARBY CREEK QUICKLY OVERFLOWED ITS BANKS AND A
            VEHICLE GOT TRAPPED IN HIGH WATER.

0453 PM     FLOOD            EDISON TWP              40.56N  74.36W
08/02/2017                   MIDDLESEX          NJ   FIRE DEPT/RESCUE

            PLAINFIELD AVE AT US-1 FLOODED

0519 PM     TSTM WND DMG     VINELAND                39.46N  75.00W
08/02/2017                   CUMBERLAND         NJ   911 CALL CENTER

            WIRES DOWN NEAR VINELAND. TIME ESTIMATED BY RADAR.

0530 PM     MARINE TSTM WIND SHIP JOHN SHOAL NOS     39.30N  75.38W
08/02/2017  M48 MPH          ANZ430             NJ   NOS PLATFORM

0623 PM     MARINE TSTM WIND TUCKERTON               39.60N  74.33W
08/02/2017  M47 MPH          OCEAN              NJ   WEATHERFLOW

&&

EVENT NUMBER PHI1701311 PHI1701312 PHI1701313 PHI1701315 PHI1701316
PHI1701325 PHI1701318 PHI1701324 PHI1701321 PHI1701314 PHI1701327
PHI1701317 PHI1701320 PHI1701323 PHI1701319 PHI1701331 PHI1701322
PHI1701334 PHI1701326 PHI1701329 PHI1701328 PHI1701333 PHI1701332
PHI1701366 PHI1701367 PHI1701368 PHI1701330 PHI1701335 PHI1701336
PHI1701341 PHI1701355 PHI1701348 PHI1701337 PHI1701339 PHI1701349
PHI1701350 PHI1701340 PHI1701338 PHI1701342 PHI1701344 PHI1701347
PHI1701346 PHI1701369 PHI1701343 PHI1701345 PHI1701354 PHI1701353
PHI1701361 PHI1701351 PHI1701352 PHI1701357 PHI1701364 PHI1701358
PHI1701356 PHI1701360 PHI1701362 PHI1701359 PHI1701370 PHI1701363
PHI1701365

STAFF
Local storm report, Aug 2, 8:34 PM EDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
834 PM EDT WED AUG 02 2017

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

0220 PM     TSTM WND DMG     UPPER MERION TWP        40.08N  75.35W
08/02/2017                   MONTGOMERY         PA   911 CALL CENTER

            TREE DOWN ON ROAD.

&&

EVENT NUMBER PHI1701371

MPS
Special weather statement, Aug 2, 8:38 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
838 PM EDT WED AUG 2 2017

MDZ008-012-015-030115-
Queen Anne's-Cecil-Kent-
838 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN QUEEN ANNE'S AND
KENT COUNTIES...

At 838 PM EDT, a strong thunderstorm was located near Rock Hall, or 9
miles east of Millers Island, moving east at 30 mph.

Winds up to 50 mph and pea size hail are possible with this storm.

Locations impacted include...
Chestertown, Rock Hall, Church Hill, Millington, Sudlersville, Old
Town, Langford, Newtown, Starkey Corner, Morgnec, Massey, Crumpton,
Kennedyville, Galena, Barclay and Kingstown.

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

LAT...LON 3926 7622 3928 7620 3929 7617 3930 7618
      3932 7618 3937 7592 3936 7589 3937 7583
      3912 7581 3909 7623 3913 7625 3915 7628
      3917 7628
TIME...MOT...LOC 0038Z 261DEG 28KT 3921 7625

po

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 2:47 PM EDTSpecial Marine WarningPHI58 min
Aug 3, 3:35 PM EDTSpecial Marine WarningPHI85 min
Aug 3, 4:44 PM EDTSpecial Weather StatementPHIMercer31 min
Aug 3, 4:47 PM EDTSpecial Marine WarningPHI88 min
Aug 3, 4:51 PM EDTSpecial Weather StatementPHISalem24 min
Aug 3, 5:07 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Monmouth, Ocean38 min
Aug 3, 5:17 PM EDTFlash Flood WarningPHIBurlington, Mercer4 hr
Aug 3, 5:42 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer48 min
Aug 3, 5:54 PM EDTSpecial Weather StatementPHISomerset36 min
Aug 3, 6:06 PM EDTSevere Thunderstorm WarningPHIBurlington39 min
Aug 3, 6:38 PM EDTAreal Flood AdvisoryPHIBurlington, Camden4 hr
Aug 3, 6:50 PM EDTSpecial Weather StatementPHIMercer55 min
Aug 3, 6:54 PM EDTSpecial Weather StatementPHIHunterdon66 min
Aug 3, 7:25 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer4 hr
Aug 3, 7:34 PM EDTSpecial Weather StatementPHIHunterdon, Mercer41 min
Aug 3, 7:47 PM EDTSpecial Weather StatementPHIMorris43 min
Aug 3, 3:31 PM EDTSpecial Weather StatementPHIBucks, Philadelphia44 min
Aug 3, 5:57 PM EDTSpecial Weather StatementPHIDelaware33 min
Aug 3, 6:15 PM EDTSpecial Weather StatementPHIPhiladelphia30 min
Aug 3, 6:34 PM EDTSpecial Weather StatementPHILehigh41 min
Aug 3, 7:16 PM EDTSpecial Weather StatementPHILehigh44 min
Aug 3, 7:37 PM EDTSpecial Weather StatementPHILehigh38 min
Aug 2, 9:12 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's34 min
Aug 3, 5:33 PM EDTAreal Flood AdvisoryPHICaroline4 hr
Aug 3, 1:54 PM EDTSpecial Weather StatementPHISussex21 min
Aug 3, 2:12 PM EDTSpecial Weather StatementPHISussex33 min
Aug 3, 2:15 PM EDTSevere Thunderstorm WarningPHISussex45 min
Aug 3, 2:26 PM EDTSpecial Weather StatementPHISussex49 min
Aug 3, 2:59 PM EDTSpecial Weather StatementPHIKent, Sussex46 min
Aug 3, 3:46 PM EDTAreal Flood AdvisoryPHIKent, Sussex4 hr
Aug 3, 4:17 PM EDTFlash Flood WarningPHIKent, Sussex4 hr
Aug 3, 5:01 PM EDTSpecial Weather StatementPHIKent29 min
Aug 3, 5:20 PM EDTSpecial Weather StatementPHISussex25 min
Aug 3, 5:49 PM EDTAreal Flood AdvisoryPHISussex4 hr
Aug 3, 6:12 PM EDTAreal Flood AdvisoryPHISussex3 hr
Aug 3, 6:31 PM EDTSpecial Weather StatementPHISussex29 min
Aug 3, 7:02 PM EDTFlash Flood WarningPHISussex3 hr

Nearby

Special Weather Statements in Maryland, 2017Every special weather statement in 2017

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.