Alert archive / New Jersey / Areal Flood Advisories in 2018
Areal Flood Advisory 208, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Aug 8, 2018, 8:09 PM EDT for Burlington County, Mercer County, Monmouth County, New Jersey. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 8, 2018, 8:09 PM EDT (00:09 UTC)
- Expired
- Aug 8, 2018, 10:56 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Mercer County, NJ, Monmouth County, NJ
The radar
The Philadelphia radar (KDIX), 24 km from the middle of the area, began a volume at 00:10 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
Brookhaven, NY (KOKX), launched 00:00Z, 0.2 hours before the alert went out and 160 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.
- Mixed-layer CAPE
- 583 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1102 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
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 Aug 8, 6:06 PM EDT, 2 hours 3 minutes earlier.
Area forecast discussion, Aug 8, 6:06 PM EDT, 2 hours 3 minutes before
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</html>Hazardous weather outlook, Aug 8, 6:03 PM EDT, 2 hours 6 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 603 PM EDT Wed Aug 8 2018 DEZ001-MDZ008-012-015-019-020-NJZ001-007>010-012-015>019-PAZ054-055- 060>062-070-071-101>106-092215- New Castle-Cecil-Kent MD-Queen Annes-Talbot-Caroline-Sussex-Warren- Morris-Hunterdon-Somerset-Middlesex-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 603 PM EDT Wed Aug 8 2018 This Hazardous Weather Outlook is for northern Delaware, northeast Maryland, central New Jersey, northern New Jersey, northwest New Jersey, southern New Jersey, east central Pennsylvania, northeast Pennsylvania and southeast Pennsylvania. .DAY ONE...Tonight. Torrential downpours with any showers and thunderstorms through this evening could lead to localized flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ002>004-NJZ013-014-020>027-092215- Kent-Inland Sussex-Delaware Beaches-Western Monmouth- Eastern Monmouth-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 603 PM EDT Wed Aug 8 2018 This Hazardous Weather Outlook is for central Delaware, southern Delaware, central New Jersey and southern New Jersey. .DAY ONE...Tonight. Torrential downpours with any showers and thunderstorms through this evening could lead to localized flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Minor tidal flooding is possible around the times of the evening high tide through the weekend. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-431-450>455-092215- 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- 603 PM EDT Wed Aug 8 2018 This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
In the hours before
Special weather statement, Aug 8, 3:02 PM EDT, 5 hours 7 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
302 PM EDT WED AUG 8 2018
PAZ101-102-081945-
Western Chester-Eastern Chester-
302 PM EDT WED AUG 8 2018
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL CHESTER COUNTY...
At 302 PM EDT, a strong thunderstorm was located over New Holland,
moving east at 20 mph.
Winds up to 40 mph are possible with this storm.
Locations impacted include...
Coatesville, Downingtown, Kennett Square, Oxford, Parkesburg, West
Grove, Honey Brook, Elverson, Homeville, Cochranville, Glenmoore,
Mount Vernon, Atglen, South Coatesville, Avondale, Christiana,
Modena, Thorndale and Toughkenamon.
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 3981 7603 3983 7604 3983 7602 3985 7602
3987 7599 3992 7600 3994 7598 3995 7600
4004 7593 4011 7594 4020 7577 4021 7571
3984 7569 3977 7606
TIME...MOT...LOC 1902Z 267DEG 15KT 4007 7608
POSpecial weather statement, Aug 8, 3:40 PM EDT, 4 hours 29 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
340 PM EDT WED AUG 8 2018
PAZ101-102-082015-
Western Chester-Eastern Chester-
340 PM EDT WED AUG 8 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN CHESTER COUNTY...
At 340 PM EDT, a strong thunderstorm was located over Cochranville,
or 14 miles southeast of New Holland, moving east at 15 mph.
Locations impacted include...
Coatesville, Kennett Square, Oxford, Parkesburg, West Grove,
Homeville, Glen Roy, Cochranville, Mount Vernon, Marshallton,
Ladenberg, Kemblesville, Atglen, South Coatesville, Avondale,
Christiana, Modena, Toughkenamon and Thorndale.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 3976 7606 3981 7603 3983 7604 3983 7602
3985 7602 3987 7599 3992 7600 3994 7598
3995 7600 4001 7596 3998 7562 3972 7578
3973 7610 3974 7610
TIME...MOT...LOC 1940Z 292DEG 12KT 3990 7597
poSpecial weather statement, Aug 8, 4:23 PM EDT, 3 hours 46 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
423 PM EDT WED AUG 8 2018
DEZ001-MDZ008-PAZ102-082100-
New Castle-Cecil-Eastern Chester-
423 PM EDT WED AUG 8 2018
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN NEW CASTLE...
NORTHEASTERN CECIL AND SOUTH CENTRAL CHESTER COUNTIES...
At 423 PM EDT, a strong thunderstorm was located over West Grove, or
8 miles north of Newark, moving east at 15 mph.
Locations impacted include...
Newark, Elsmere, Kennett Square, West Grove, Newport, Greenville,
Stanton, North Star, Ladenberg, Pike Creek, Kemblesville, Glen
Westover, Hockessin, Ashland, Appleton, Bear, Avondale, Toughkenamon
and Brookside.
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 3985 7588 3985 7586 3989 7585 3986 7559
3984 7559 3985 7558 3984 7557 3962 7563
3972 7590
TIME...MOT...LOC 2023Z 279DEG 14KT 3979 7581
poSpecial weather statement, Aug 8, 6:40 PM EDT, 1 hour 29 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
640 PM EDT WED AUG 8 2018
NJZ012-082315-
Middlesex-
640 PM EDT WED AUG 8 2018
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN MIDDLESEX COUNTY...
At 639 PM EDT, a strong thunderstorm was located over Perth Amboy,
moving northeast at 20 mph.
Locations impacted include...
Perth Amboy, Carteret, Matawan, Colonia, Woodbridge, Metuchen,
Madison Park, Iselin, Sewaren, Port Reading, Fords, Avenel and
Laurence Harbor.
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 4056 7421 4055 7425 4050 7426 4050 7428
4046 7426 4045 7423 4044 7424 4041 7425
4040 7427 4059 7440 4060 7438 4061 7431
4059 7429 4060 7426 4059 7420
TIME...MOT...LOC 2239Z 243DEG 15KT 4055 7426
POThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 9:58 PM EDT | Special Weather Statement | PHI | Monmouth | 32 min |
| Aug 9, 2:06 AM EDT | Special Weather Statement | PHI | Morris | 24 min |
| Aug 9, 5:29 PM EDT | Coastal Flood Advisory | PHI | Burlington, Mercer | 10 hr |
| Aug 8, 10:42 PM EDT | Special Weather Statement | PHI | New Castle | 63 min |
| Aug 9, 12:03 AM EDT | Special Weather Statement | PHI | Kent | 57 min |
Nearby
Areal Flood Advisories in New Jersey, 2018Every areal flood advisory 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; radar from the NEXRAD Level II archive.