Alert archive / New Jersey / Flood Watches in 2018
Flood Watch 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flood watch at Feb 28, 2018, 3:45 PM EST for 10 counties in New Jersey; 5 counties in Pennsylvania. It took effect at Mar 2, 2018, 1:00 AM EST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Feb 28, 2018, 3:45 PM EST (20:45 UTC)
- In effect from
- Mar 2, 2018, 1:00 AM EST
- Expired
- Mar 2, 2018, 1:08 PM EST
- In force
- 12 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
Counties Burlington County, NJ, Camden County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 59 km from the middle of the area, began a volume at 20:42 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, 8.8 hours before the alert went out and 177 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
- 1775 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 220 m²/s²
- 0-3 km storm-relative helicity
- 250 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
332 WGUS61 KPHI 282045 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Mount Holly NJ 345 PM EST Wed Feb 28 2018 NJZ007>010-012>015-018>020-026-027-PAZ061-062-071-103>106-010445- /O.NEW.KPHI.FA.A.0003.180302T0600Z-180303T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Eastern Monmouth-Mercer-Camden-Northwestern Burlington-Ocean- Coastal Ocean-Southeastern Burlington-Lehigh-Northampton- Philadelphia-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Allentown, Bethlehem, Easton, Philadelphia, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 345 PM EST Wed Feb 28 2018 ...FLOOD WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH LATE FRIDAY NIGHT... The National Weather Service in Mount Holly has issued a * Flood Watch for portions of New Jersey and Pennsylvania, including the following areas, in New Jersey, Camden, Coastal Ocean, Eastern Monmouth, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Somerset, Southeastern Burlington, Warren, and Western Monmouth. In Pennsylvania, Eastern Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia, Upper Bucks, and Western Montgomery. * From late Thursday night through late Friday night * Rain is expected to develop Thursday afternoon and persists through all of Friday and maybe into Friday night. The heaviest rain is expected across the northern half of New Jersey and east-central Pennsylvania. This includes the Raritan and Passaic basins in New jersey and portions of the Delaware Basin. * As the rain falls later on Thursday and into Friday, low-lying and poor drainage flooding is likely where the heaviest rain occurs. In addition, as this rainfall runs off into larger streams and rivers, flooding will also be possible Friday night into Saturday. 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. && $$ Kruzdlo
6 follow-up statements
836 WGUS61 KPHI 010405 FFAPHI Flood Watch National Weather Service Mount Holly NJ 1105 PM EST Wed Feb 28 2018 NJZ007>010-012>015-018>020-026-027-PAZ061-062-071-103>106-011400- /O.CON.KPHI.FA.A.0003.180302T0600Z-180303T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Eastern Monmouth-Mercer-Camden-Northwestern Burlington-Ocean- Coastal Ocean-Southeastern Burlington-Lehigh-Northampton- Philadelphia-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Allentown, Bethlehem, Easton, Philadelphia, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 1105 PM EST Wed Feb 28 2018 ...FLOOD WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH LATE FRIDAY NIGHT... The Flood Watch continues for * Portions of New Jersey and Pennsylvania, including the following areas, in New Jersey, Camden, Coastal Ocean, Eastern Monmouth, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Somerset, Southeastern Burlington, Warren, and Western Monmouth. In Pennsylvania, Eastern Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia, Upper Bucks, and Western Montgomery. * From late Thursday night through late Friday night * Rain is expected to develop Thursday afternoon and persists through all of Friday and maybe into Friday night. The heaviest rain is expected across the northern half of New Jersey and east-central Pennsylvania. This includes the Raritan and Passaic basins in New jersey and portions of the Delaware Basin. * As the rain falls later on Thursday and into Friday, low-lying and poor drainage flooding is likely where the heaviest rain occurs. In addition, as this rainfall runs off into larger streams and rivers, flooding will also be possible Friday night into Saturday. 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. && $$
356 WGUS61 KPHI 010914 FFAPHI Flood Watch National Weather Service Mount Holly NJ 414 AM EST Thu Mar 1 2018 NJZ007>010-012>015-018>020-026-027-PAZ061-062-071-103>106-012200- /O.CON.KPHI.FA.A.0003.180302T0600Z-180303T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Eastern Monmouth-Mercer-Camden-Northwestern Burlington-Ocean- Coastal Ocean-Southeastern Burlington-Lehigh-Northampton- Philadelphia-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Allentown, Bethlehem, Easton, Philadelphia, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 414 AM EST Thu Mar 1 2018 ...FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH LATE FRIDAY NIGHT... The Flood Watch continues for * Portions of New Jersey and Pennsylvania, including the following areas, in New Jersey, Camden, Coastal Ocean, Eastern Monmouth, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Somerset, Southeastern Burlington, Warren, and Western Monmouth. In Pennsylvania, Eastern Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia, Upper Bucks, and Western Montgomery. * From late tonight through late Friday night * Rain is expected to develop this afternoon and persist through all of Friday and maybe into Friday night. The rain is forecast to change to snow on Friday in areas to the northwest of the Interstate 95 Corridor. The heaviest precipitation is expected across the northern half of New Jersey and east-central Pennsylvania. This includes the Raritan and Passaic River basins in New Jersey and portions of the Delaware River Basin. * As the rain falls from tonight into Friday, low-lying and poor drainage flooding is likely where the heaviest rain occurs. In addition, as this rainfall runs off into larger streams and rivers, flooding will also be possible Friday night into Saturday. 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. && $$
295 WGUS61 KPHI 011958 FFAPHI Flood Watch National Weather Service Mount Holly NJ 258 PM EST Thu Mar 1 2018 NJZ007>010-012>015-018>020-026-027-PAZ061-062-071-103>106-020900- /O.CON.KPHI.FA.A.0003.180302T0600Z-180303T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Eastern Monmouth-Mercer-Camden-Northwestern Burlington-Ocean- Coastal Ocean-Southeastern Burlington-Lehigh-Northampton- Philadelphia-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Allentown, Bethlehem, Easton, Philadelphia, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 258 PM EST Thu Mar 1 2018 ...FLOOD WATCH REMAINS IN EFFECT FROM 1 AM EST FRIDAY THROUGH LATE FRIDAY NIGHT... The Flood Watch continues for * Portions of New Jersey and Pennsylvania, including the following areas, in New Jersey, Camden, Coastal Ocean, Eastern Monmouth, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Somerset, Southeastern Burlington, Warren, and Western Monmouth. In Pennsylvania, Eastern Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia, Upper Bucks, and Western Montgomery. * From 1 AM EST Friday through late Friday night * Rain will spread across the region this evening and persist through at least Friday evening. The rain is forecast to change to or mix with snow on Friday in areas to the northwest of the Interstate 95 Corridor. The heaviest precipitation is expected across the northern half of New Jersey and east-central Pennsylvania. This includes the Raritan and Passaic River basins in New Jersey and portions of the Delaware River Basin. * As the rain falls from tonight into Friday, low-lying and poor drainage flooding is likely where the heaviest rain occurs. In addition, as this rainfall runs off into larger streams and rivers, flooding will also be possible Friday night into Saturday. 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. && $$ Kruzdlo
840 WGUS61 KPHI 020144 FFAPHI Flood Watch National Weather Service Mount Holly NJ 844 PM EST Thu Mar 1 2018 NJZ007>010-012>015-018>020-026-027-PAZ061-062-071-103>106-021200- /O.CON.KPHI.FA.A.0003.180302T0600Z-180303T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Eastern Monmouth-Mercer-Camden-Northwestern Burlington-Ocean- Coastal Ocean-Southeastern Burlington-Lehigh-Northampton- Philadelphia-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Allentown, Bethlehem, Easton, Philadelphia, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 844 PM EST Thu Mar 1 2018 ...FLOOD WATCH REMAINS IN EFFECT FROM 1 AM EST FRIDAY THROUGH LATE FRIDAY NIGHT... The Flood Watch continues for * Portions of New Jersey and Pennsylvania, including the following areas, in New Jersey, Camden, Coastal Ocean, Eastern Monmouth, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Somerset, Southeastern Burlington, Warren, and Western Monmouth. In Pennsylvania, Eastern Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia, Upper Bucks, and Western Montgomery. * From 1 AM EST Friday through late Friday night. * Rain will continue tonight and during the day Friday, then taper off Friday evening. The rain however is forecast to change to or mix with snow Friday afternoon and evening in areas mainly to the northwest of Interstate 95. Rainfall totals of 1 to 2 inches are expected, with locally higher amounts possible mainly north of Interstate 78. This includes the Raritan and Passaic River basins in New Jersey and portions of the Delaware River Basin. * Low-lying and poor drainage flooding is likely where the heaviest rain occurs. In addition, as the rainfall runs off into larger streams and rivers, flooding will also be possible Friday night into Saturday. 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. && $$ Kruzdlo/Gorse
572 WGUS61 KPHI 020840 FFAPHI Flood Watch National Weather Service Mount Holly NJ 340 AM EST Fri Mar 2 2018 NJZ007>010-012>015-018>020-026-027-PAZ061-062-071-103>106-022200- /O.CON.KPHI.FA.A.0003.000000T0000Z-180303T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Eastern Monmouth-Mercer-Camden-Northwestern Burlington-Ocean- Coastal Ocean-Southeastern Burlington-Lehigh-Northampton- Philadelphia-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Allentown, Bethlehem, Easton, Philadelphia, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 340 AM EST Fri Mar 2 2018 ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flood Watch continues for * Portions of New Jersey and Pennsylvania, including the following areas, in New Jersey, Camden, Coastal Ocean, Eastern Monmouth, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Somerset, Southeastern Burlington, Warren, and Western Monmouth. In Pennsylvania, Eastern Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia, Upper Bucks, and Western Montgomery. * Through late tonight * Rain will continue today. The rain is forecast to mix with or change to snow mainly this afternoon and tonight in areas to the northwest of the Interstate 95 Corridor. The precipitation is expected to come to an end tonight. Rainfall totals of 1.5 to 2.5 inches are forecast, with locally higher amounts possible. The area of concern includes the Raritan and Passaic River basins in New Jersey and portions of the Delaware River Basin. * Flooding is expected in low-lying and poor drainage areas and on small streams. As the rainfall makes its way into larger streams and rivers in the area, there is the potential for additional flooding into the weekend. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means that there is a potential for flooding based on the current forecast. Monitor the forecast and be alert for possible Flood Warnings. If you live in an area that is prone to flooding, be prepared to take action if flooding develops. && $$ Iovino
204 WGUS61 KPHI 021808 FFAPHI Flood Watch National Weather Service Mount Holly NJ 108 PM EST Fri Mar 2 2018 NJZ007>010-012>015-018>020-026-027-PAZ061-062-071-103>106-021915- /O.CAN.KPHI.FA.A.0003.000000T0000Z-180303T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Eastern Monmouth-Mercer-Camden-Northwestern Burlington-Ocean- Coastal Ocean-Southeastern Burlington-Lehigh-Northampton- Philadelphia-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Allentown, Bethlehem, Easton, Philadelphia, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 108 PM EST Fri Mar 2 2018 ...FLOOD WATCH IS CANCELLED... The Flood Watch for portions of New Jersey and Pennsylvania has been cancelled. The moderate to heavy rain has ended and has transitioned to mainly snow. While pockets of low-lying and poor drainage flooding could still exist through the afternoon hours, with the transition to snow, the threat of this type of flooding overall, has diminished. The one to two inches of rain that fell last night and this morning, before the transition to snow, still is expected to run off into area rivers. Rises are still expected tonight and into the weekend. But because we have seen a transition to snow, the threat of river flooding has also diminished. If you live in flood prone areas across the Passaic and Raritan basins, continue to monitor river forecasts on out AHPS site through the weekend. $$ Kruzdlo
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 3:12 PM EST | High Wind Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 9 more | 24 hr |
| Feb 28, 3:33 PM EST | Winter Storm Watch | PHI | Sussex | 24 hr |
| Feb 28, 3:36 PM EST | Gale Watch | PHI | 12 hr | |
| Feb 28, 3:36 PM EST | Storm Watch | PHI | 12 hr | |
| Feb 28, 3:43 PM EST | Coastal Flood Watch | PHI | Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more | 24 hr |
Nearby
Flood Watches in New Jersey, 2018Flood Watches in Pennsylvania, 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.