Alert archive / New Jersey / Flood Watches in 2018
Flood Watch 7, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flood watch at Nov 8, 2018, 3:20 PM EST for 8 counties in New Jersey. It took effect at Nov 9, 2018, 6:00 PM EST. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Nov 8, 2018, 3:20 PM EST (20:20 UTC)
- In effect from
- Nov 9, 2018, 6:00 PM EST
- Expired
- Nov 9, 2018, 8:21 PM EST
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 20:18 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, 8.3 hours before the alert went out and 151 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
- 1599 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- -176 m²/s²
- 0-3 km storm-relative helicity
- -56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
948 WGUS61 KPHI 082020 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Mount Holly NJ 320 PM EST Thu Nov 8 2018 NJZ001-007>010-012>015-091100- /O.NEW.KPHI.FA.A.0007.181109T2300Z-181110T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, and Trenton 320 PM EST Thu Nov 8 2018 ...FLOOD WATCH IN EFFECT FROM FRIDAY EVENING THROUGH LATE FRIDAY NIGHT... The National Weather Service in Mount Holly has issued a * Flood Watch for northern New Jersey. * Friday night. * Showers develop throughout the day Friday, and then moderate to heavy rain will impact the area late Friday and Friday night. Rainfall totals of 1 to 2 inches, with locally higher amounts, will fall during this time. * The heaviest rain will fall across portions of northern New Jersey. Flash flooding is also possible on roadways and especially in areas of poor drainage. The Raritan and Passaic mainstems will experience rises, in some cases to bankful or even exceeding bankful. Flooding along small streams and creeks is possible as well. River flooding may continue into Saturday morning, well after the heavy rain has ended. 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. && $$ MPS
3 follow-up statements
989 WGUS61 KPHI 090836 FFAPHI Flood Watch National Weather Service Mount Holly NJ 336 AM EST Fri Nov 9 2018 NJZ001-007>010-012>015-092100- /O.CON.KPHI.FA.A.0007.181109T2300Z-181110T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, and Trenton 336 AM EST Fri Nov 9 2018 ...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT... The Flood Watch continues for * Portions of central New Jersey, northern New Jersey, and northwest New Jersey, including the following areas, in central New Jersey, Eastern Monmouth, Mercer, and Western Monmouth. In northern New Jersey, Middlesex, Morris, Somerset, Sussex, and Warren. In northwest New Jersey, Hunterdon. * From this evening through late tonight * Showers develop throughout today, and then moderate to heavy rain will impact the area late this afternoon and tonight. Rainfall totals of 1 to 2 inches, with locally higher amounts, will fall during this time. * The heaviest rain will fall across portions of northern New Jersey. Flash flooding is also possible on roadways and especially in areas of poor drainage. The Raritan and Passaic mainstems will experience rises, in some cases to bankful or even exceeding bankful. Flooding along small streams and creeks is possible as well. River flooding may continue into Saturday morning, well after the heavy rain has ended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$
515 WGUS61 KPHI 092048 FFAPHI Flood Watch National Weather Service Mount Holly NJ 348 PM EST Fri Nov 9 2018 NJZ001-007>010-012>015-101100- /O.CON.KPHI.FA.A.0007.181109T2300Z-181110T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, and Trenton 348 PM EST Fri Nov 9 2018 ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flood Watch continues for * Portions of central New Jersey, northern New Jersey, and northwest New Jersey, including the following areas, in central New Jersey, Eastern Monmouth, Mercer, and Western Monmouth. In northern New Jersey, Middlesex, Morris, Somerset, Sussex, and Warren. In northwest New Jersey, Hunterdon. * Through late tonight. * Rain, heavy at times, will impact the area through this evening. Rainfall totals of 1 to 2 inches, with possibly locally higher amounts, are expected. * The heaviest rain will fall across portions of northern New Jersey. Flash flooding is also possible on roadways, and this will be enhanced if fallen leaves clog storm drains. The Raritan and Passaic mainstems will experience rises, in some cases to bankful or even exceeding bankful. Flooding along small streams and creeks is possible as well. River flooding may continue into Saturday morning, well after the heavy rain has ended. 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. && $$
113 WGUS61 KPHI 100121 FFAPHI Flood Watch National Weather Service Mount Holly NJ 821 PM EST Fri Nov 9 2018 NJZ001-007>010-012>015-100230- /O.CAN.KPHI.FA.A.0007.000000T0000Z-181110T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, and Trenton 821 PM EST Fri Nov 9 2018 ...FLOOD WATCH IS CANCELLED... The Flood Watch for portions of central New Jersey, northern New Jersey, and northwest New Jersey has been cancelled. The heavy rain has moved out and while there will continue to be rises on the rivers tonight into Saturday any flooding that occurs looks to be isolated and minor. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 8, 5:20 AM EST | Small Craft Advisory | PHI | 49 hr | |
| Nov 8, 3:33 PM EST | Gale Watch | PHI | 10 hr |
Nearby
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.