Alert archive / New Jersey / Flood Watches in 2018
Flood Watch 11, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flood watch at Dec 27, 2018, 3:13 PM EST for 4 states. It took effect at Dec 28, 2018, 5:00 AM EST. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Dec 27, 2018, 3:13 PM EST (20:13 UTC)
- In effect from
- Dec 28, 2018, 5:00 AM EST
- Expired
- Dec 28, 2018, 7:00 PM EST
- In force
- 14 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
All 21 counties
New Castle County, DE, Cecil County, MD, Kent County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 54 km from the middle of the area, began a volume at 20:14 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 12:00Z, 8.2 hours before the alert went out and 209 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 818 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
001 WGUS61 KPHI 272013 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Mount Holly NJ 313 PM EST Thu Dec 27 2018 DEZ001-MDZ008-012-NJZ008>010-012>022-025>027-PAZ070-071-101>106- 280900- /O.NEW.KPHI.FA.A.0011.181228T1000Z-181229T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ New Castle-Cecil-Kent MD-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Coastal Atlantic-Coastal Ocean-Southeastern Burlington-Delaware- Philadelphia-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Elkton, Chestertown, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Atlantic City, Long Beach Island, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 313 PM EST Thu Dec 27 2018 ...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY EVENING... The National Weather Service in Mount Holly has issued a * Flood Watch for portions of northern Delaware, northeast Maryland, New Jersey, and southeast Pennsylvania, including the following areas, in northern Delaware, New Castle. In northeast Maryland, Cecil and Kent MD. In New Jersey, Atlantic, Camden, Coastal Atlantic, Coastal Ocean, Cumberland, Eastern Monmouth, Gloucester, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Salem, Somerset, Southeastern Burlington, and Western Monmouth. In southeast Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, Philadelphia, Upper Bucks, Western Chester, and Western Montgomery. * From late tonight through Friday evening * Rainfall totals of 1 to 2 inches, with locally higher amounts possible. * Periods of moderate to heavy rain will occur from late tonight through Friday. In the areas of heaviest rainfall, urban and poor-drainage flooding is expected to occur. Given antecedent wet conditions across the watch area, sensitive streams and creeks will also be susceptible to flooding. Some river flooding is also possible should the heaviest rainfall occur in the associated basins, with the Passaic and Millstone Rivers most at risk. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ CMS
3 follow-up statements
720 WGUS61 KPHI 280828 FFAPHI Flood Watch National Weather Service Mount Holly NJ 328 AM EST Fri Dec 28 2018 DEZ001-MDZ008-012-NJZ008>010-012>022-025>027-PAZ070-071-101>106- 282100- /O.CON.KPHI.FA.A.0011.181228T1000Z-181229T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ New Castle-Cecil-Kent MD-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Coastal Atlantic-Coastal Ocean-Southeastern Burlington-Delaware- Philadelphia-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Elkton, Chestertown, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Atlantic City, Long Beach Island, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 328 AM EST Fri Dec 28 2018 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flood Watch continues for * Portions of northern Delaware, northeast Maryland, New Jersey, and southeast Pennsylvania, including the following areas, the Interstate 95 corridor, and much of eastern New Jersey. * Through this evening * Rainfall totals of 1 to 2 inches, with locally higher amounts possible. * Periods of moderate to heavy rain will occur through early this evening. In the areas of heaviest rainfall, some overland and urban flooding is expected to occur. Given antecedent wet conditions across the watch area, sensitive streams and creeks will also be susceptible to flooding. Some river flooding is also possible should the heaviest rainfall occur in the associated basins, with the Passaic and Millstone Rivers most at risk. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ SFJ
594 WGUS61 KPHI 282045 FFAPHI Flood Watch National Weather Service Mount Holly NJ 345 PM EST Fri Dec 28 2018 DEZ001-MDZ008-012-NJZ008>010-012>022-025>027-PAZ070-071-101>106- 290000- /O.CON.KPHI.FA.A.0011.000000T0000Z-181229T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ New Castle-Cecil-Kent MD-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Coastal Atlantic-Coastal Ocean-Southeastern Burlington-Delaware- Philadelphia-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Elkton, Chestertown, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Atlantic City, Long Beach Island, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 345 PM EST Fri Dec 28 2018 ...FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... The Flood Watch continues for * Portions of northern Delaware, northeast Maryland, New Jersey, and southeast Pennsylvania, including the following areas, in northern Delaware, New Castle. In northeast Maryland, Cecil and Kent MD. In New Jersey, Atlantic, Camden, Coastal Atlantic, Coastal Ocean, Cumberland, Eastern Monmouth, Gloucester, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Salem, Somerset, Southeastern Burlington, and Western Monmouth. In southeast Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, Philadelphia, Upper Bucks, Western Chester, and Western Montgomery. * Until 7 PM EST this evening. * Rainfall totals of 1 to 2 inches, with locally higher amounts. * Periods of rain, heavy at times, will end from west to east through early this evening. In the areas of heaviest rainfall, some overland and urban flooding is expected to occur. Given antecedent wet conditions across the watch area, sensitive streams and creeks will also be susceptible to flooding. Some river flooding is also possible should heavier rainfall occur in the associated basins, with the Passaic and Millstone Rivers most at risk. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$
168 WGUS61 KPHI 290002 FFAPHI Flood Watch National Weather Service Mount Holly NJ 702 PM EST Fri Dec 28 2018 DEZ001-MDZ008-012-NJZ008>010-012>022-025>027-PAZ070-071-101>106- 290115- /O.EXP.KPHI.FA.A.0011.000000T0000Z-181229T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ New Castle-Cecil-Kent MD-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Coastal Atlantic-Coastal Ocean-Southeastern Burlington-Delaware- Philadelphia-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Elkton, Chestertown, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Atlantic City, Long Beach Island, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 702 PM EST Fri Dec 28 2018 ...FLOOD WATCH HAS EXPIRED... The Flood Watch for portions of northern Delaware, northeast Maryland, New Jersey, and southeast Pennsylvania has been cancelled. The heavy rain has moved out of the region and the threat for flooding has come to an end. $$ TCD
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 27, 3:39 AM EST | Gale Watch | PHI | 12 hr | |
| Dec 27, 3:39 AM EST | Small Craft Advisory | PHI | 62 hr | |
| Dec 27, 3:19 PM EST | Gale Warning | PHI | 25 hr |
Nearby
Flood Watches in New Jersey, 2018Flood Watches in Pennsylvania, 2018Flood Watches in Maryland, 2018Every flood watch 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.