Alert archive / New Jersey / Areal Flood Advisories in 2018
Areal Flood Advisory 56, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at May 17, 2018, 6:29 AM EDT for 4 counties in New Jersey; 4 counties in Pennsylvania. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- May 17, 2018, 6:29 AM EDT (10:29 UTC)
- Expired
- May 17, 2018, 8:30 AM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Bucks County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 10:33 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, 10.5 hours before the alert went out and 222 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
- 73 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 601 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 36 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 May 17, 6:25 AM EDT, 4 minutes earlier.
Area forecast discussion, May 17, 6:25 AM EDT, 4 minutes before
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</html>Hazardous weather outlook, May 17, 4:11 AM EDT, 2 hours 18 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 411 AM EDT Thu May 17 2018 MDZ008-012-015-019-020-NJZ007-009-010-015-017>019-PAZ060>062-070-071- 101>106-180815- Cecil-Kent MD-Queen Annes-Talbot-Caroline-Warren-Hunterdon-Somerset- Mercer-Gloucester-Camden-Northwestern Burlington-Berks-Lehigh- Northampton-Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 411 AM EDT Thu May 17 2018 ...FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH LATE FRIDAY NIGHT... This Hazardous Weather Outlook is for northeast Maryland, central New Jersey, northern New Jersey, northwest New Jersey, southern 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. Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ001-008-PAZ054-055-180815- Sussex-Morris-Carbon-Monroe- 411 AM EDT Thu May 17 2018 This Hazardous Weather Outlook is for northern New Jersey and northeast Pennsylvania. .DAY ONE...Today and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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>004-NJZ012>014-016-020>027-180815- New Castle-Kent-Inland Sussex-Delaware Beaches-Middlesex- Western Monmouth-Eastern Monmouth-Salem-Ocean-Cumberland-Atlantic- Cape May-Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 411 AM EDT Thu May 17 2018 ...FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH LATE FRIDAY NIGHT... This Hazardous Weather Outlook is for central Delaware, northern Delaware, southern Delaware, central New Jersey, northern 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. Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. There is the potential for widespread minor coastal flooding with the Friday evening/night high tide cycle. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-431-450>455-180815- 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- 411 AM EDT Thu May 17 2018 This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...Today and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. CMS
In the hours before
Local storm report, May 17, 4:17 AM EDT, 2 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
417 AM EDT THU MAY 17 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0400 AM FLOOD BOB WHITE FARMS 40.08N 75.37W
05/17/2018 MONTGOMERY PA DEPT OF HIGHWAYS
FLOODING ON INTERSTATE 76 EASTBOUND BETWEEN EXIT 328
AND EXIT 330. LANE RESTRICTIONS IN PLACE.
&&
EVENT NUMBER PHI1800839
CMSLocal storm report, May 17, 4:20 AM EDT, 2 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
420 AM EDT THU MAY 17 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0333 AM FLOOD CHARLESTOWN 39.58N 75.98W
05/17/2018 CECIL MD DEPT OF HIGHWAYS
FLOODING ON STATE HIGHWAY 7 AT LOUISA LANE. LANE
RESTRICTIONS IN PLACE.
&&
EVENT NUMBER PHI1800840
CMSLocal storm report, May 17, 4:47 AM EDT, 1 hour 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
447 AM EDT THU MAY 17 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0437 AM FLOOD 1 W PORT RICHMOND 39.98N 75.12W
05/17/2018 PHILADELPHIA PA DEPT OF HIGHWAYS
FLOODING ON INTERSTATE 95 BETWEEN EXITS 23 AND 25 IN
PHILADELPHIA. LANE RESTRICTIONS IN PLACE.
&&
EVENT NUMBER PHI1800841
CMSLocal storm report, May 17, 6:08 AM EDT, 21 minutes before
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</html>Local storm report, May 17, 6:12 AM EDT, 17 minutes before
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</html>Local storm report, May 17, 6:15 AM EDT, 14 minutes before
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</html>The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 2:32 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Salem | 4 hr |
| May 17, 4:05 AM EDT | Small Craft Advisory | PHI | 4 days | |
| May 17, 4:26 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset | 4 hr |
| May 17, 7:54 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May | 2 hr |
| May 17, 5:16 AM EDT | Areal Flood Warning | PHI | Chester, Montgomery | 6 hr |
| May 17, 6:01 AM EDT | River Flood Warning | PHI | Chester | 7 hr |
| May 17, 9:50 AM EDT | River Flood Warning | PHI | Bucks | 3 hr |
| May 17, 10:04 AM EDT | River Flood Warning | PHI | Chester, Delaware | 8 hr |
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.