Alert archive / Pennsylvania / Areal Flood Advisories in 2015

Areal Flood Advisory 41, NWS Philadelphia/Mount Holly

June 1, 2015Burlington County, Camden County, Gloucester County, New Jersey; 4 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood advisory at Jun 1, 2015, 5:56 AM EDT for Burlington County, Camden County, Gloucester County, New Jersey; 4 counties in Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jun 1, 2015, 5:56 AM EDT (09:56 UTC)
Expired: Jun 1, 2015, 9:00 AM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 09:58 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, 9.9 hours before the alert went out and 218 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 246 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1706 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 104 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory 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 areal flood advisory went out at Jun 1, 4:07 AM EDT, 1 hour 49 minutes earlier.

Area forecast discussion, Jun 1, 4:07 AM EDT, 1 hour 49 minutes before

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Hazardous weather outlook, Jun 1, 4:10 AM EDT, 1 hour 46 minutes before

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In the hours before

Special weather statement, Jun 1, 12:14 AM EDT, 5 hours 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1214 AM EDT MON JUN 1 2015

PAZ060-101-102-010445-
EASTERN CHESTER-BERKS-WESTERN CHESTER-
1214 AM EDT MON JUN 1 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WESTERN CHESTER AND
SOUTHEASTERN BERKS COUNTIES...

AT 1213 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR NEW HOLLAND TO STRASBURG TO NEAR QUARRYVILLE...
AND MOVING EAST AT 20 MPH.

WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THESE STORMS.

THESE STORMS WILL BE NEAR...
  HONEY BROOK AROUND 1235 AM EDT.
  NEW MORGAN AROUND 1240 AM EDT.
  PARKESBURG...ELVERSON...HOMEVILLE...COCHRANVILLE AND GLENMOORE
AROUND 1245 AM EDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE SOUTH COATESVILLE...
ATGLEN...CHRISTIANA AND MODENA.

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 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 3985 7602 3987 7599 3992 7600 3994 7598
      3995 7600 4004 7593 4011 7594 4014 7588
      4020 7596 4024 7571 4001 7577 3982 7593
      3982 7603
TIME...MOT...LOC 0413Z 258DEG 19KT 4013 7608 3998 7622 3986 7620

DRAG

Special weather statement, Jun 1, 12:44 AM EDT, 5 hours 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1244 AM EDT MON JUN 1 2015

PAZ060>062-070-101>105-010530-
EASTERN CHESTER PA-WESTERN MONTGOMERY PA-NORTHAMPTON PA-BERKS PA-
DELAWARE PA-LEHIGH PA-EASTERN MONTGOMERY PA-UPPER BUCKS PA-
WESTERN CHESTER PA-
1244 AM EDT MON JUN 1 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LEHIGH...WESTERN
MONTGOMERY...NORTHERN DELAWARE...NORTHWESTERN BUCKS...NORTHEASTERN
CHESTER...SOUTH CENTRAL NORTHAMPTON AND SOUTHEASTERN BERKS COUNTIES
UNTIL 130 AM EDT...

AT 1242 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM BIRDSBORO TO NEAR HONEY
BROOK...AND MOVING NORTHEAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
NORRISTOWN...POTTSTOWN...PHOENIXVILLE...WEST NORRITON...EAST
NORRITON...COATESVILLE...QUAKERTOWN...DOWNINGTOWN...SOUDERTON...
HELLERTOWN...BIRDSBORO...COLLEGEVILLE...ROYERSFORD...TRAPPE...EAST
GREENVILLE...SCHWENKSVILLE...ELVERSON...BALLY...BECHTELSVILLE AND
GREEN LANE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4013 7589 4015 7589 4030 7588 4059 7531
      4006 7534 3991 7591
TIME...MOT...LOC 0442Z 243DEG 23KT 4026 7583 4006 7585

SFJ

Special weather statement, Jun 1, 1:28 AM EDT, 4 hours 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
128 AM EDT MON JUN 1 2015

DEZ001-NJZ009-015>019-PAZ061-070-071-101>106-010615-
NEW CASTLE-NORTHWESTERN
BURLINGTON-MERCER-SALEM-CAMDEN-HUNTERDON-GLOUCESTER-PHILADELPHIA-
LEHIGH-EASTERN MONTGOMERY-LOWER BUCKS-WESTERN CHESTER-EASTERN
CHESTER-WESTERN MONTGOMERY-DELAWARE-UPPER BUCKS-
128 AM EDT MON JUN 1 2015

...LINE OF STRONG THUNDERSTORMS MOVING INTO THE DELAWARE VALLEY...

AT 127 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR GERYVILLE TO KING OF PRUSSIA TO NEAR LADENBERG...
AND MOVING EAST AT 25 MPH.

WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
PHILADELPHIA...CAMDEN...WILMINGTON...WEST CHESTER...GLOUCESTER
CITY...BENSALEM...EWING...NORRISTOWN...CHESTER...WEST DEPTFORD...
LANSDALE...WEST NORRITON...EAST NORRITON...YEADON...WESTTOWN...
BRISTOL...QUAKERTOWN...PERKASIE...DOYLESTOWN AND BYRAM.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING IN POOR DRAINAGE AREAS. DO NOT DRIVE YOUR
VEHICLE THROUGH FLOODED ROADWAYS.

LAT...LON 4010 7548 4046 7549 4056 7484 4012 7483
      3972 7532 3974 7590
TIME...MOT...LOC 0527Z 266DEG 24KT 4040 7541 4011 7540 3981 7575

SFJ

Special weather statement, Jun 1, 2:17 AM EDT, 3 hours 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
217 AM EDT MON JUN 1 2015

DEZ001-MDZ008-012-NJZ009-010-012-015>019-PAZ070-071-102-104-106-
010700-
NEW CASTLE-CECIL-KENT-KENT-CECIL-SOMERSET-NORTHWESTERN
BURLINGTON-MERCER-SALEM-MIDDLESEX-CAMDEN-HUNTERDON-GLOUCESTER-
PHILADELPHIA-EASTERN MONTGOMERY-LOWER BUCKS-EASTERN CHESTER-DELAWARE-
217 AM EDT MON JUN 1 2015

...LINE OF STRONG THUNDERSTORMS MOVING INTO THE DELAWARE VALLEY ...

AT 216 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEW HOPE TO PHILADELPHIA INTERNATIONAL AIRPORT TO NEAR
HOLLYWOOD BEACH...AND MOVING EAST AT 20 MPH.

WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
PHILADELPHIA...TRENTON...CAMDEN...WILMINGTON...MIDDLETOWN...ELKTON...
GLOUCESTER CITY...CHERRY HILL...BENSALEM...EVESHAM...MOUNT LAUREL...
EWING...CHESTER...WILLINGBORO...DEPTFORD...VOORHEES...WEST
DEPTFORD...GLASSBORO...LINDENWOLD AND PENNSVILLE.

BRIEF HEAVY RAIN IS ALSO OCCURRING WITH THESE STORMS...AND MAY CAUSE
LOCALIZED FLOODING IN POOR DRAINAGE AREAS. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS.

LAT...LON 3950 7599 3981 7538 4037 7497 4056 7451
      3979 7489 3950 7540 3945 7550 3946 7554
      3957 7551 3962 7557 3972 7551 3972 7552
      3962 7561 3959 7560 3959 7557 3946 7559
      3942 7555 3935 7567 3942 7600
TIME...MOT...LOC 0616Z 248DEG 16KT 4034 7494 3984 7532 3951 7595

SFJ

Special weather statement, Jun 1, 3:35 AM EDT, 2 hours 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
335 AM EDT MON JUN 1 2015

NJZ013-014-018>027-010800-
SOUTHEASTERN BURLINGTON-CAPE MAY-ATLANTIC COASTAL CAPE
MAY-NORTHWESTERN BURLINGTON-EASTERN MONMOUTH-ATLANTIC-WESTERN
MONMOUTH-COASTAL ATLANTIC-COASTAL OCEAN-CAMDEN-OCEAN-CUMBERLAND-
335 AM EDT MON JUN 1 2015

...LINE OF STORMS IN EASTERN NEW JERSEY WITH HEAVY RAIN...

AT 332 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM CLARKSBURG TO NEAR WOODRUFF TO NEAR MAURICETOWN...AND
MOVING EAST AT 25 MPH.

BRIEF HEAVY RAIN WILL BE POSSIBLE WITH THESE STORMS...REDUCING
VISIBILITY TO NEAR ONE MILE AT TIMES. WINDS IN EXCESS OF 30 MPH ARE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
TOMS RIVER...VINELAND...ATLANTIC CITY...LONG BRANCH...MILLVILLE...
ASBURY PARK...OCEAN CITY...CUMBERLAND...LAKEWOOD...JACKSON...
HOWELL...BARNEGAT...PLEASANTVILLE...TINTON FALLS...HAMMONTON...
BEACHWOOD...SOMERS POINT...NORTHFIELD...ABSECON AND MANASQUAN.

LAT...LON 4007 7404 4006 7412 4005 7405 3987 7408
      3994 7408 3994 7415 3993 7412 3974 7419
      3956 7441 3950 7440 3930 7455 3933 7468
      3926 7459 3921 7516 3999 7452 4023 7449
      4035 7397
TIME...MOT...LOC 0732Z 260DEG 22KT 4018 7441 4001 7443 3929 7503

SFJ

Local storm report, Jun 1, 4:15 AM EDT, 1 hour 41 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
415 AM EDT MON JUN 01 2015

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

0115 PM     TSTM WND GST     FORKS TWP               40.73N  75.22W
05/31/2015  M57 MPH          NORTHAMPTON        PA   TRAINED SPOTTER

0115 PM     HAIL             FORKS TWP               40.73N  75.22W
05/31/2015  M0.25 INCH       NORTHAMPTON        PA   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED IN FORKS TWP.

0200 PM     HAIL             WHITE TWP               40.83N  75.03W
05/31/2015  M0.50 INCH       WARREN             NJ   SOCIAL MEDIA

            PEA TO MARBLE SIZE HAIL REPORTED IN WHITE TWP.

0440 PM     TSTM WND DMG     1 SSW HAMILTON SQUARE   40.91N  75.30W
05/31/2015                   MONROE             PA   911 CALL CENTER

            LIMBS DOWN ON LINES

0640 PM     HAIL             SAYREVILLE              40.47N  74.32W
05/31/2015  M0.88 INCH       MIDDLESEX          NJ   SOCIAL MEDIA

            NICKEL TO NEAR QUARTER SIZE HAIL REPORTED IN
            SAYREVILLE.

0655 PM     HAIL             LAURENCE HARBOR         40.45N  74.25W
05/31/2015  M0.25 INCH       MIDDLESEX          NJ   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED IN LAURENCE HARBOR.

0700 PM     FLASH FLOOD      SAYREVILLE              40.47N  74.32W
05/31/2015                   MIDDLESEX          NJ   SOCIAL MEDIA

            SEVERAL ROADS REPORTED TO BE FLOODED IN SAYREVILLE AND
            SURROUNDING AREAS.

0730 PM     HEAVY RAIN       SOUTH AMBOY             40.49N  74.28W
05/31/2015  M4.50 INCH       MIDDLESEX          NJ   SOCIAL MEDIA

            4.50 INCHES OF RAIN FELL IN 90 MINUTES.

0753 PM     HEAVY RAIN       OLD BRIDGE TWP          40.40N  74.30W
05/31/2015  M4.97 INCH       MIDDLESEX          NJ   TRAINED SPOTTER

            IN TWO HOURS

0753 PM     FLASH FLOOD      OLD BRIDGE TWP          40.40N  74.30W
05/31/2015                   MIDDLESEX          NJ   TRAINED SPOTTER

            ROADWAYS FLOODED WITH SOME EVACUATIONS AND PROPERTY
            DAMAGE.

0755 PM     FLASH FLOOD      SOUTH AMBOY             40.49N  74.28W
05/31/2015                   MIDDLESEX          NJ   SOCIAL MEDIA

            FLOODING ON ROUTE 35

0813 PM     FLASH FLOOD      MAHONING TWP            40.81N  75.77W
05/31/2015                   CARBON             PA   911 CALL CENTER

            SR-443 HAS FLOODING IN THE AREA OF 84-LUMBER.

0845 PM     FLASH FLOOD      NORTH PLAINFIELD        40.62N  74.44W
05/31/2015                   SOMERSET           NJ   911 CALL CENTER

            CARS STUCK IN HIGH WATER ON ROUTE 22

0928 PM     FLASH FLOOD      CLINTON                 40.64N  74.91W
05/31/2015                   HUNTERDON          NJ   TRAINED SPOTTER

            2 CARS STALLED WITH UP TO ONE FOOT OF WATER OVER SOME
            ROADS. REPORT RELAYED THROUGH SPOTTER NETWORK

0231 AM     FLASH FLOOD      BETHLEHEM TWP           40.66N  75.31W
06/01/2015                   NORTHAMPTON        PA   911 CALL CENTER

            CAR STALLED IN FLOODED ROAD

&&

EVENT NUMBER PHI1500211 PHI1500215 PHI1500216 PHI1500222 PHI1500212
PHI1500213 PHI1500214 PHI1500217 PHI1500218 PHI1500219 PHI1500220
PHI1500221 PHI1500223 PHI1500224 PHI1500225

STAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 8:13 PM EDT	Flash Flood Warning	PHI	Somerset	5 hr
May 31, 8:43 PM EDT	Special Weather Statement	PHI	Hunterdon	62 min
May 31, 9:06 PM EDT	Flash Flood Warning	PHI	Hunterdon	5 hr
Jun 1, 1:57 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Middlesex, Morris, Somerset, Warren	3 hr
Jun 1, 2:17 AM EDT	Special Weather Statement	PHI	Camden, Gloucester, Mercer, Salem	43 min
Jun 1, 2:55 AM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer	2 hr
Jun 1, 3:20 AM EDT	Areal Flood Advisory	PHI	Mercer, Middlesex, Monmouth, Somerset	115 min
Jun 1, 3:35 AM EDT	Special Weather Statement	PHI	Atlantic, Monmouth, Ocean	25 min
Jun 1, 4:20 AM EDT	Flash Flood Watch	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 8 more	26 hr
Jun 1, 10:05 AM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	4 hr
Jun 1, 10:11 AM EDT	Small Craft Advisory	PHI		4 days
Jun 1, 2:28 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Cumberland, Gloucester, Salem	32 min
Jun 1, 3:04 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	56 min
Jun 1, 3:29 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington	46 min
Jun 1, 3:42 PM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	6 hr
Jun 1, 3:56 PM EDT	Special Weather Statement	PHI	Atlantic, Cape May	79 min
Jun 1, 4:26 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Ocean	3 hr
Jun 1, 4:32 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	43 min
Jun 1, 4:37 PM EDT	Tornado Warning	PHI	Salem	23 min
Jun 1, 5:27 PM EDT	Areal Flood Advisory	PHI	Cumberland, Gloucester, Salem	3 hr
Jun 1, 5:34 PM EDT	Areal Flood Advisory	PHI	Cape May	3 hr
Jun 1, 7:18 PM EDT	Flash Flood Warning	PHI	Cumberland	3 hr
Jun 1, 7:26 PM EDT	Special Marine Warning	PHI		34 min
Jun 1, 7:54 PM EDT	Special Weather Statement	PHI	Atlantic, Cape May	111 min
May 31, 9:44 PM EDT	Areal Flood Advisory	PHI	Bucks	5 hr
May 31, 11:10 PM EDT	Special Weather Statement	PHI	Lebanon	65 min
May 31, 11:47 PM EDT	Special Weather Statement	PHI	Chester	58 min
May 31, 11:59 PM EDT	Special Weather Statement	PHI	Berks	31 min
Jun 1, 12:14 AM EDT	Special Weather Statement	PHI	Chester	31 min
Jun 1, 12:21 AM EDT	Areal Flood Advisory	PHI	Berks, Chester, Lehigh, Montgomery	114 min
Jun 1, 12:44 AM EDT	Special Weather Statement	PHI	Chester, Montgomery	46 min
Jun 1, 1:28 AM EDT	Special Weather Statement	PHI	Bucks, Delaware, Montgomery, Philadelphia	47 min
Jun 1, 2:14 PM EDT	Special Weather Statement	PHI	Chester	61 min
Jun 1, 2:43 PM EDT	Severe Thunderstorm Warning	PHI	Chester	32 min
Jun 1, 4:55 PM EDT	Areal Flood Advisory	PHI	Delaware, Montgomery, Philadelphia	3 hr
Jun 1, 3:13 AM EDT	Areal Flood Advisory	PHI	Cecil, Kent	3 hr
Jun 1, 5:35 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	70 min
Jun 1, 5:56 PM EDT	Areal Flood Advisory	PHI	Cecil, Kent, Queen Anne's	6 hr
Jun 1, 6:29 PM EDT	Flash Flood Warning	PHI	Cecil	3 hr
Jun 1, 6:53 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	37 min

Nearby

Areal Flood Advisories in Pennsylvania, 2015 Areal Flood Advisories in New Jersey, 2015 Every areal flood advisory in 2015

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.