Alert archive / New Jersey / Flood Watches in 2021

Flood Watch 2, NWS New York, NY

October 29, 2021Essex County, Passaic County, Union County, New Jersey

NWS New York, NY issued this flood watch at Oct 29, 2021, 4:12 PM EDT for Essex County, Passaic County, Union 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, 4:12 PM EDT (20:12 UTC)
In effect from
Oct 29, 2021, 8:00 PM EDT
Expired
Oct 30, 2021, 4:06 AM EDT
In force
8 hr
Issued by
NWS New York, NY
Flood severity
None

Counties Essex County, NJ, Passaic County, NJ, Union County, NJ

The radar

The Philadelphia radar (KDIX), 98 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 120 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2021-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted.

881 
WGUS61 KOKX 292012
FFAOKX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service New York NY
412 PM EDT Fri Oct 29 2021

NJZ002-004-105-107-301000-
/O.NEW.KOKX.FA.A.0002.211030T0000Z-211031T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Western Passaic-Eastern Passaic-Western Essex-Western Union-
412 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 Upton has issued a

* Flood Watch for a portion of northeast New Jersey, including the 
  following areas, Eastern Passaic, Western Essex, Western Passaic 
  and Western Union.

* From 8 PM EDT this evening through late Saturday night.

* Moderate to locally heavy rainfall is expected tonight through 
  Saturday. Rainfall amounts between 1 and 2 inches is expected to 
  result in some of the smaller streams and creeks to rise above 
  flood stage.

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.

&&

$$
2 follow-up statements
763 
WGUS61 KOKX 300614
FFAOKX

Flood Watch
National Weather Service New York NY
214 AM EDT Sat Oct 30 2021

NJZ002-004-105-107-301800-
/O.CON.KOKX.FA.A.0002.000000T0000Z-211031T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Western Passaic-Eastern Passaic-Western Essex-Western Union-
214 AM EDT Sat Oct 30 2021

...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

The Flood Watch continues for

* A portion of northeast New Jersey, including the following areas, 
  Eastern Passaic, Western Essex, Western Passaic and Western Union.

* Through late tonight.

* The Passaic River remains high from rain that fell earlier this 
  week. Another rise above flood stage is possible today due to 
  recent rain from Friday evening. Additional rises in some of the 
  smaller streams and creeks could also rise above flood stage.
 

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.

&&

$$

DS
805 
WGUS61 KOKX 300806
FFAOKX

Flood Watch
National Weather Service New York NY
406 AM EDT Sat Oct 30 2021

NJZ002-004-105-107-300915-
/O.CAN.KOKX.FA.A.0002.000000T0000Z-211031T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Western Passaic-Eastern Passaic-Western Essex-Western Union-
406 AM EDT Sat Oct 30 2021

...FLOOD WATCH IS CANCELLED...

The Flood Watch for a portion of northeast New Jersey, including the 
following areas, Eastern Passaic, Western Essex, Western Passaic and 
Western Union has been cancelled.

The Flood Watch is cancelled. No new flooding is expected along the 
Passaic and any smaller streams in the area. A flood warning remains 
in effect for 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.

$$

DS

Nearby

Flood Watches in New Jersey, 2021Every flood watch in 2021

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.