Alert archive / New Jersey / Areal Flood Advisories in 2018
Areal Flood Advisory 34, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Apr 16, 2018, 5:52 AM EDT for 4 counties in New Jersey; 4 counties in Pennsylvania. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 16, 2018, 5:52 AM EDT (09:52 UTC)
- Expired
- Apr 16, 2018, 12:45 PM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Bucks County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 09:52 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, 9.9 hours before the alert went out and 208 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
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 448 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 521 m²/s²
- 0-3 km storm-relative helicity
- 714 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Apr 16, 5:42 AM EDT, 10 minutes earlier.
Area forecast discussion, Apr 16, 5:42 AM EDT, 10 minutes before
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</html>Hazardous weather outlook, Apr 16, 5:40 AM EDT, 12 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 540 AM EDT Mon Apr 16 2018 NJZ007>010-PAZ061-062-101>105-170945- Warren-Morris-Hunterdon-Somerset-Lehigh-Northampton-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks- 540 AM EDT Mon Apr 16 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON... This Hazardous Weather Outlook is for northern New Jersey, northwest New Jersey, east central Pennsylvania and southeast Pennsylvania. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. MDZ008-012-015-019-020-170945- Cecil-Kent MD-Queen Annes-Talbot-Caroline- 540 AM EDT Mon Apr 16 2018 This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...Today and Tonight. A storm system will be affecting the region with showers, gusty winds and possibly a thunderstorms early this morning. Locally heavy rains may cause urban and small stream flooding at times. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. NJZ001-PAZ054-055-170945- Sussex-Carbon-Monroe- 540 AM EDT Mon Apr 16 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING... ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON... This Hazardous Weather Outlook is for northern New Jersey and northeast Pennsylvania. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. NJZ015-017>019-PAZ070-071-106-170945- Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Lower Bucks- 540 AM EDT Mon Apr 16 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 3 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for central New Jersey, southern New Jersey and southeast Pennsylvania. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. DEZ001-NJZ016-170945- New Castle-Salem- 540 AM EDT Mon Apr 16 2018 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for northern Delaware and southern New Jersey. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Advisory. A storm system will be affecting the region with showers, gusty winds and possibly a thunderstorms early this morning. Locally heavy rains may cause urban and small stream flooding at times. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. NJZ013-014-020-026-170945- Western Monmouth-Eastern Monmouth-Ocean-Coastal Ocean- 540 AM EDT Mon Apr 16 2018 ...COASTAL FLOOD WARNING IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for central New Jersey and southern New Jersey. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. NJZ012-170945- Middlesex- 540 AM EDT Mon Apr 16 2018 ...COASTAL FLOOD WARNING IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON... This Hazardous Weather Outlook is for northern New Jersey. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Warning. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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-NJZ021>025-027-170945- Kent-Inland Sussex-Delaware Beaches-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Southeastern Burlington- 540 AM EDT Mon Apr 16 2018 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for central Delaware, southern Delaware and southern New Jersey. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Advisory. A storm system will be affecting the region with showers, gusty winds and possibly a thunderstorms early this morning. Locally heavy rains may cause urban and small stream flooding at times. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. PAZ060-170945- Berks- 540 AM EDT Mon Apr 16 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON... This Hazardous Weather Outlook is for east central Pennsylvania. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. For rural areas of Berks county, low temperatures will range from the lower to middle 30s on Tuesday night. There is the potential for frost, which may impact sensitive plants. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-431-454-455-170945- 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 Cape May NJ to Cape Henlopen DE out 20 nm- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 540 AM EDT Mon Apr 16 2018 ...GALE WARNING IN EFFECT UNTIL 11 AM EDT THIS MORNING... This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. ANZ450>453-170945- 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- 540 AM EDT Mon Apr 16 2018 ...GALE WARNING IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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
Local storm report, Apr 16, 2:11 AM EDT, 3 hours 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
211 AM EDT MON APR 16 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 AM FREEZING RAIN POCONO MOUNTAINS AIRPOR 41.14N 75.38W
04/16/2018 M0.19 INCH MONROE PA ASOS
RADIAL AMOUNT
&&
EVENT NUMBER PHI1800602
SFJSpecial weather statement, Apr 16, 3:45 AM EDT, 2 hours 7 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
345 AM EDT MON APR 16 2018
MDZ008-012-015-019-020-PAZ101-160815-
Queen Anne's-Talbot-Cecil-Kent-Caroline-Western Chester-
345 AM EDT MON APR 16 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT TALBOT...QUEEN
ANNE'S...WEST CENTRAL CAROLINE...WESTERN KENT...WESTERN CECIL AND
SOUTHWESTERN CHESTER COUNTIES...
At 344 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Arbutus to 7 miles east of Breezy
Point. Movement was northeast at 55 mph.
Winds up to 40 mph and heavy rain are possible with these storms.
Locations impacted include...
Easton, Centerville, Talbot, Chestertown, Centreville, Romancoke,
Rising Sun, Rock Hall, Trappe, St. Michaels, Church Hill, Oxford,
Queen Anne, Glen Roy, Old Town, Grasonville, Starr, Copperville, West
Nottingham and Mount Vernon.
LAT...LON 3875 7635 3886 7626 3879 7620 3879 7619
3894 7621 3884 7637 3894 7636 3904 7631
3900 7617 3917 7628 3941 7601 3953 7599
3972 7623 3983 7602 3886 7592 3857 7604
TIME...MOT...LOC 0744Z 197DEG 64KT 3921 7668 3859 7637
SFJSpecial weather statement, Apr 16, 4:23 AM EDT, 1 hour 29 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
423 AM EDT MON APR 16 2018
MDZ008-012-015-019-020-160900-
Queen Anne's-Talbot-Cecil-Kent-Caroline-
423 AM EDT MON APR 16 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT TALBOT...QUEEN
ANNE'S...CAROLINE...KENT AND EASTERN CECIL COUNTIES...
At 423 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Langford to near Overton to near
Easton. Movement was northeast at 40 mph.
Winds up to 40 mph are possible with these storms.
Locations impacted include...
Easton, Centerville, Chestertown, Denton, Centreville, North East,
Romancoke, Greensboro, Oakland, Ridgely, Rock Hall, Charlestown,
Trappe, St. Michaels, Church Hill, Preston, Cecilton, Oxford,
Millington and Sudlersville.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 3895 7622 3897 7625 3891 7624 3890 7625
3894 7627 3885 7636 3902 7632 3900 7617
3917 7628 3967 7595 3937 7577 3870 7573
3866 7616 3876 7630
TIME...MOT...LOC 0823Z 218DEG 33KT 3922 7623 3905 7614 3879 7611
SFJSpecial weather statement, Apr 16, 4:55 AM EDT, 57 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
455 AM EDT MON APR 16 2018
DEZ001>003-MDZ008-012-015-019-020-NJZ016-PAZ070-102-160945-
Inland Sussex-Kent-New Castle-Queen
Anne's-Talbot-Cecil-Kent-Caroline-Salem-Delaware-Eastern Chester-
455 AM EDT MON APR 16 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WESTERN SUSSEX...NEW
CASTLE...KENT...EASTERN TALBOT...EASTERN QUEEN ANNE'S...CAROLINE...
NORTHEASTERN KENT...CECIL...WEST CENTRAL SALEM...SOUTH CENTRAL
CHESTER AND WESTERN DELAWARE COUNTIES...
At 455 AM EDT, radar indicated strong thunderstorms were located
along a line extending from Betterton to Preston Maryland. Movement
was northeast at 40 mph.
Winds up to 40 mph are possible with these storms.
Locations impacted include...
Wilmington, Dover, Newark, Middletown, West Chester, Elkton,
Pennsville, Smyrna, Milford, Seaford, Elsmere, Kennett Square, New
Castle, Denton, Laurel, North East, Harrington, Camden, Clayton and
Federalsburg.
Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 3846 7569 3869 7577 3870 7590 3863 7598
3864 7598 3938 7606 3943 7600 3954 7601
4000 7557 3959 7552 3959 7553 3965 7556
3963 7561 3960 7561 3949 7553 3955 7552
3954 7552 3845 7539
TIME...MOT...LOC 0855Z 218DEG 33KT 3943 7599 3871 7588
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 12:32 AM EDT | Winter Weather Advisory | PHI | Sussex | 8 hr |
| Apr 16, 5:20 AM EDT | Special Marine Warning | PHI | 55 min | |
| Apr 16, 5:34 AM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 4 hr |
| Apr 16, 6:07 AM EDT | Special Marine Warning | PHI | 53 min | |
| Apr 16, 6:30 AM EDT | Areal Flood Advisory | PHI | Hunterdon | 4 hr |
| Apr 16, 6:45 AM EDT | Special Weather Statement | PHI | Cape May, Cumberland | 45 min |
| Apr 16, 6:49 AM EDT | Special Marine Warning | PHI | 86 min | |
| Apr 16, 7:04 AM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 4 hr |
| Apr 16, 7:26 AM EDT | Special Weather Statement | PHI | Camden, Gloucester, Mercer | 34 min |
| Apr 16, 7:49 AM EDT | Special Marine Warning | PHI | 116 min | |
| Apr 16, 8:13 AM EDT | Special Marine Warning | PHI | 62 min | |
| Apr 16, 8:28 AM EDT | Special Weather Statement | PHI | Middlesex, Monmouth, Morris, Somerset, Sussex, Warren | 47 min |
| Apr 16, 9:08 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more | 4 hr |
| Apr 16, 9:26 AM EDT | Areal Flood Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 3 more | 4 hr |
| Apr 16, 1:18 PM EDT | Coastal Flood Advisory | PHI | Middlesex, Monmouth, Ocean | 13 hr |
| Apr 16, 1:31 PM EDT | Areal Flood Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 2 more | 4 hr |
| Apr 16, 2:45 PM EDT | Coastal Flood Warning | PHI | Burlington, Camden, Gloucester, Mercer | 3 hr |
| Apr 16, 3:52 PM EDT | Small Craft Advisory | PHI | 44 hr | |
| Apr 16, 4:46 PM EDT | River Flood Warning | PHI | Somerset | 28 hr |
| Apr 16, 5:27 PM EDT | Areal Flood Warning | PHI | Somerset | 8 hr |
| Apr 16, 7:45 AM EDT | River Flood Warning | PHI | Delaware | 4 hr |
| Apr 16, 8:44 AM EDT | Areal Flood Warning | PHI | Philadelphia | 2 hr |
| Apr 16, 10:45 AM EDT | Areal Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Apr 16, 11:41 AM EDT | River Flood Warning | PHI | Bucks | 12 hr |
| Apr 16, 12:04 PM EDT | Special Weather Statement | PHI | Chester | 26 min |
| Apr 16, 2:27 PM EDT | Areal Flood Warning | PHI | Montgomery, Philadelphia | 5 hr |
| Apr 16, 4:55 AM EDT | Special Weather Statement | PHI | Kent, New Castle | 50 min |
| Apr 16, 6:04 AM EDT | Special Weather Statement | PHI | Kent, Sussex | 26 min |
Nearby
Areal Flood Advisories in New Jersey, 2018Areal Flood Advisories in Pennsylvania, 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.