Alert archive / New Jersey / Flood Watches in 2019
Flood Watch 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flood watch at Dec 13, 2019, 3:40 PM EST for 8 counties in New Jersey; Bucks County, Pennsylvania. It took effect at Dec 13, 2019, 9:00 PM EST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 13, 2019, 3:40 PM EST (20:40 UTC)
- In effect from
- Dec 13, 2019, 9:00 PM EST
- Expired
- Dec 14, 2019, 9:00 AM EST
- In force
- 12 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
Counties Burlington County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 47 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, 8.7 hours before the alert went out and 157 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
- 780 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 244 m²/s²
- 0-3 km storm-relative helicity
- 406 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
241 WGUS61 KPHI 132040 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Mount Holly NJ 340 PM EST Fri Dec 13 2019 NJZ008>010-015-PAZ105-106-140445- /O.NEW.KPHI.FA.A.0004.191214T0200Z-191214T1700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morris-Hunterdon-Somerset-Mercer-Upper Bucks-Lower Bucks- Including the cities of Morristown, Flemington, Somerville, Trenton, Chalfont, Perkasie, Morrisville, and Doylestown 340 PM EST Fri Dec 13 2019 ...FLOOD WATCH IN EFFECT FROM 9 PM EST THIS EVENING THROUGH SATURDAY MORNING... The National Weather Service in Mount Holly has issued a * Flood Watch for portions of New Jersey and southeast Pennsylvania, including the following areas, in New Jersey, Hunterdon, Mercer, Morris, and Somerset. In southeast Pennsylvania, Lower Bucks and Upper Bucks. * From 9 PM EST this evening through Saturday morning * Periods of heavy rain can be expected overnight. Amounts up to two inches are possible. This could lead to small stream as well as main-stem flooding. Poor drainage and low-lying flooding is likely. * The risk of low-lying and small stream flooding will increase tonight into Saturday. The risk of main-stem flooding will increase late Saturday into Saturday night. Please refer to our Advanced Hydrologic Prediction Service (AHPS) website for both Passaic and Raritan Basin crest forecasts. 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. && $$ NJZ012>014-019-020-026-027-140445- /O.NEW.KPHI.FA.A.0004.191214T0200Z-191214T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Middlesex-Western Monmouth-Eastern Monmouth- Northwestern Burlington-Ocean-Coastal Ocean- Southeastern Burlington- Including the cities of New Brunswick, Freehold, Sandy Hook, Moorestown, Mount Holly, Jackson, Long Beach Island, and Wharton State Forest 340 PM EST Fri Dec 13 2019 ...FLOOD WATCH IN EFFECT FROM 9 PM EST THIS EVENING THROUGH LATE TONIGHT... The National Weather Service in Mount Holly has issued a * Flood Watch for portions of central New Jersey, northern New Jersey, and southern New Jersey, including the following areas, in central New Jersey, Eastern Monmouth and Western Monmouth. In northern New Jersey, Middlesex. In southern New Jersey, Coastal Ocean, Northwestern Burlington, Ocean, and Southeastern Burlington. * From 9 PM EST this evening through late tonight * Periods of heavy rain can be expected overnight. Amounts up to two inches are possible. * The risk of small stream flooding will increase tonight and persist into Saturday morning. With expected amounts, poor drainage and low-lying flooding is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ Kruzdlo
3 follow-up statements
809 WGUS61 KPHI 140253 FFAPHI Flood Watch National Weather Service Mount Holly NJ 953 PM EST Fri Dec 13 2019 NJZ008>010-015-PAZ105-106-141200- /O.CON.KPHI.FA.A.0004.000000T0000Z-191214T1700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morris-Hunterdon-Somerset-Mercer-Upper Bucks-Lower Bucks- Including the cities of Morristown, Flemington, Somerville, Trenton, Chalfont, Perkasie, Morrisville, and Doylestown 953 PM EST Fri Dec 13 2019 ...FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING... The Flood Watch continues for * Portions of New Jersey and southeast Pennsylvania, including the following areas, in New Jersey, Hunterdon, Mercer, Morris, and Somerset. In southeast Pennsylvania, Lower Bucks and Upper Bucks. * Through Saturday morning. * Periods of heavy rain will continue overnight into early Saturday morning. Amounts of up to two inches are possible. This could lead to small stream as well as main-stem flooding. Poor drainage and low-lying flooding is likely. * The risk of low-lying and small stream flooding will increase overnight into Saturday. The risk of main-stem flooding will increase late Saturday into Saturday night. Please refer to the Advanced Hydrologic Prediction Service (AHPS) website for both Passaic and Raritan Basin crest forecasts. 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. && $$ NJZ012>014-019-020-026-027-141100- /O.CON.KPHI.FA.A.0004.000000T0000Z-191214T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Middlesex-Western Monmouth-Eastern Monmouth- Northwestern Burlington-Ocean-Coastal Ocean- Southeastern Burlington- Including the cities of New Brunswick, Freehold, Sandy Hook, Moorestown, Mount Holly, Jackson, Long Beach Island, and Wharton State Forest 953 PM EST Fri Dec 13 2019 ...FLOOD WATCH REMAINS IN EFFECT UNTIL 6 AM EST SATURDAY... The Flood Watch continues for * Portions of central New Jersey, northern New Jersey, and southern New Jersey, including the following areas, in central New Jersey, Eastern Monmouth and Western Monmouth. In northern New Jersey, Middlesex. In southern New Jersey, Coastal Ocean, Northwestern Burlington, Ocean, and Southeastern Burlington. * Until 6 AM EST Saturday. * Periods of heavy rain will continue overnight into early Saturday morning. Amounts up to two inches are possible. * The risk of small stream flooding will increase overnight and persist into Saturday morning. With the rainfall amounts expected, poor drainage and low-lying flooding is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$
821 WGUS61 KPHI 141107 FFAPHI Flood Watch National Weather Service Mount Holly NJ 607 AM EST Sat Dec 14 2019 NJZ012>014-019-020-026-027-141215- /O.EXP.KPHI.FA.A.0004.000000T0000Z-191214T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Middlesex-Western Monmouth-Eastern Monmouth- Northwestern Burlington-Ocean-Coastal Ocean- Southeastern Burlington- Including the cities of New Brunswick, Freehold, Sandy Hook, Moorestown, Mount Holly, Jackson, Long Beach Island, and Wharton State Forest 607 AM EST Sat Dec 14 2019 ...FLOOD WATCH HAS EXPIRED... The Flood Watch for portions of central New Jersey, northern New Jersey, and southern New Jersey has expired. Around three quarters to one and one quarter inches of rain fell across the watch area overnight. While more rain is expected to fall through this morning, it is not expected to cause any additional problems on the area rivers. Poor drainage and low- lying flooding is likely to continue in the more prone areas. $$ NJZ008>010-015-PAZ105-106-141700- /O.CON.KPHI.FA.A.0004.000000T0000Z-191214T1700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morris-Hunterdon-Somerset-Mercer-Upper Bucks-Lower Bucks- Including the cities of Morristown, Flemington, Somerville, Trenton, Chalfont, Perkasie, Morrisville, and Doylestown 607 AM EST Sat Dec 14 2019 ...FLOOD WATCH REMAINS IN EFFECT UNTIL NOON EST TODAY... The Flood Watch continues for * Portions of New Jersey and southeast Pennsylvania, including the following areas, in New Jersey, Hunterdon, Mercer, Morris, and Somerset. In southeast Pennsylvania, Lower Bucks and Upper Bucks. * Until noon EST today * Periods of heavy rain will continue through this morning. Amounts of up to two inches are possible. This could lead to small stream as well as main-stem flooding. Poor drainage and low- lying flooding is likely. * The risk of low-lying and small stream flooding will increase overnight into Saturday. The risk of main-stem flooding will increase late Saturday into Saturday night. Please refer to the Advanced Hydrologic Prediction Service (AHPS) website for both Passaic and Raritan Basin crest forecasts. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$
932 WGUS61 KPHI 141400 FFAPHI Flood Watch National Weather Service Mount Holly NJ 900 AM EST Sat Dec 14 2019 NJZ008>010-015-PAZ105-106-141500- /O.CAN.KPHI.FA.A.0004.000000T0000Z-191214T1700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morris-Hunterdon-Somerset-Mercer-Upper Bucks-Lower Bucks- Including the cities of Morristown, Flemington, Somerville, Trenton, Chalfont, Perkasie, Morrisville, and Doylestown 900 AM EST Sat Dec 14 2019 ...FLOOD WATCH IS CANCELLED... The Flood Watch for portions of New Jersey and southeast Pennsylvania has been cancelled. The heavy rain from last night has ended. Another batch of rainfall is expected this afternoon, however, it is not expected to have much impact on local rivers, creeks, or streams. Many local rivers, creeks, and streams will continue to have rises trough today, tonight, and Sunday. Most places are not expected to exceed flood stage at this time. The only exception if Pine Brook on the Passaic which may approach flood stage on Sunday afternoon. $$ Robertson
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 4:28 AM EST | Gale Watch | PHI | 23 hr | |
| Dec 13, 4:28 AM EST | Small Craft Advisory | PHI | 35 hr | |
| Dec 13, 2:34 PM EST | Coastal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more | 22 hr |
| Dec 13, 3:16 PM EST | Small Craft Advisory | PHI | 24 hr |
Nearby
Flood Watches in New Jersey, 2019Flood Watches in Pennsylvania, 2019Every flood watch in 2019
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.