Alert archive / New Jersey / Flood Watches in 2021
Flood Watch 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flood watch at Oct 29, 2021, 4:13 PM EDT for Morris County, New Jersey. It took effect at Oct 29, 2021, 8:00 PM EDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Oct 29, 2021, 4:13 PM EDT (20:13 UTC)
- In effect from
- Oct 29, 2021, 8:00 PM EDT
- Expired
- Oct 30, 2021, 3:59 AM EDT
- In force
- 8 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
County Morris County, NJ
The radar
The Philadelphia radar (KDIX), 102 km from the middle of the area, began a volume at 20:13 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 141 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
- 946 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
756 WGUS61 KPHI 292013 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Mount Holly NJ 413 PM EDT Fri Oct 29 2021 NJZ008-300815- /O.NEW.KPHI.FA.A.0002.211030T0000Z-211031T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morris- Including the cities of Morristown 413 PM EDT Fri Oct 29 2021 ...FLOOD WATCH IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH LATE SATURDAY NIGHT... The National Weather Service in Mount Holly has issued a * Flood Watch for a portion of northern New Jersey...including the following area...Morris. * From 8 PM EDT this evening through late Saturday night. * Rain, moderate to heavy at times, is expected to move into the northern New Jersey this evening and persist, on and off, through Saturday. The rain will be heaviest tonight. The Passaic River remains high from the rain that fell earlier in the week. At Pine Brook, water levels are not expected to drop below flood stage before new rises begin. The crest at Pine Brook could exceed moderate flood stage. Additionally, the forecast points at Chatham, Singac, and Little Falls could exceed flood stage this weekend. As a result of these forecast points potentially exceeding flood stage, a flood watch has been issued. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$ Kruzdlo
2 follow-up statements
074 WGUS61 KPHI 300602 FFAPHI Flood Watch National Weather Service Mount Holly NJ 202 AM EDT Sat Oct 30 2021 NJZ008-301815- /O.CON.KPHI.FA.A.0002.000000T0000Z-211031T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morris- Including the cities of Morristown 202 AM EDT Sat Oct 30 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flood Watch continues for * A portion of northern New Jersey...including the following area... Morris. * Through late tonight. * The Passaic River remains high from rain that fell earlier in the week. At Pine Brook, water levels are not expected to drop below flood stage for at least the next few days. At Chatham, Singac, and Little Falls, another rise in river levels due to the recent rain Friday and Friday night could result in additional flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be alert of possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ SFJ
303 WGUS61 KPHI 300759 FFAPHI Flood Watch National Weather Service Mount Holly NJ 359 AM EDT Sat Oct 30 2021 NJZ008-300900- /O.CAN.KPHI.FA.A.0002.000000T0000Z-211031T1000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morris- Including the cities of Morristown 359 AM EDT Sat Oct 30 2021 ...FLOOD WATCH IS CANCELLED... The Flood Watch for a portion of northern New Jersey...including the following area...Morris has been cancelled. The Flood Watch is cancelled. No new flooding is expected along the Passaic. However, a flood warning remains in effect for the the Passaic River at Pine Brook. The river at this location is forecast to remain above flood stage until early Monday Morning. Please continue to heed remaining road closures. $$ SFJ
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 29, 6:10 PM EDT | Areal Flood Advisory | PHI | Cape May, Cumberland, Gloucester, Salem | 3 hr |
| Oct 29, 7:38 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Cumberland, Gloucester, Salem | 3 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.