Alert archive / New Jersey / Flash Flood Watches in 2021
Flash Flood Watch 9, NWS New York, NY
NWS New York, NY issued this flash flood watch at Sep 7, 2021, 3:25 PM EDT for 5 counties in New Jersey; Orange County, Rockland County, New York. It took effect at Sep 8, 2021, 5:00 PM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Sep 7, 2021, 3:25 PM EDT (19:25 UTC)
- In effect from
- Sep 8, 2021, 5:00 PM EDT
- Expired
- Sep 9, 2021, 2:27 AM EDT
- In force
- 9 hr
- Issued by
- NWS New York, NY
- Flood severity
- None
Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Orange County, NY, Rockland County, NY
The radar
The Brookhaven radar (KOKX), 112 km from the middle of the area, began a volume at 19:23 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, 7.4 hours before the alert went out and 112 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
- 1434 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
191 WGUS61 KOKX 071925 FFAOKX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service New York NY 325 PM EDT Tue Sep 7 2021 NJZ002-004-006-103>108-NYZ067-069-080330- /O.NEW.KOKX.FF.A.0009.210908T2100Z-210909T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen- Western Essex-Eastern Essex-Western Union-Eastern Union-Orange- Rockland- 325 PM EDT Tue Sep 7 2021 ...FLASH FLOOD WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT... The National Weather Service in Upton has issued a * Flash Flood Watch for portions of northeast New Jersey and southeast New York, including the following areas, in northeast New Jersey, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Western Bergen, Western Essex, Western Passaic and Western Union. In southeast New York, Orange and Rockland. * From Wednesday afternoon through late Wednesday night. * A cold frontal passage will produce a round of showers and thunderstorms across the area late Wednesday into Wednesday night. Due to wet antecedent conditions, the area is susceptible to flooding. * Locally heavy rainfall may produce flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
5 follow-up statements
637 WGUS61 KOKX 072359 FFAOKX Flood Watch National Weather Service New York NY 759 PM EDT Tue Sep 7 2021 NJZ002-004-006-103>108-NYZ067-069-080800- /O.CON.KOKX.FF.A.0009.210908T2100Z-210909T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen- Western Essex-Eastern Essex-Western Union-Eastern Union-Orange- Rockland- 759 PM EDT Tue Sep 7 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT... The Flash Flood Watch continues for * Portions of northeast New Jersey and southeast New York, including the following areas, in northeast New Jersey, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Western Bergen, Western Essex, Western Passaic and Western Union. In southeast New York, Orange and Rockland. * From Wednesday afternoon through late Wednesday night. * A cold frontal passage will produce a round of showers and thunderstorms across the area late Wednesday into Wednesday night. Due to wet antecedent conditions, the area is susceptible to flooding. * Locally heavy rainfall may produce flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ DW
203 WGUS61 KOKX 080721 FFAOKX Flood Watch National Weather Service New York NY 321 AM EDT Wed Sep 8 2021 NJZ002-004-006-103>108-NYZ067-069-082100- /O.CON.KOKX.FF.A.0009.210908T2100Z-210909T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen- Western Essex-Eastern Essex-Western Union-Eastern Union-Orange- Rockland- 321 AM EDT Wed Sep 8 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH LATE TONIGHT... The Flash Flood Watch continues for * Portions of northeast New Jersey and southeast New York, including the following areas, in northeast New Jersey, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Western Bergen, Western Essex, Western Passaic and Western Union. In southeast New York, Orange and Rockland. * From this afternoon through late tonight. * A cold frontal passage will produce a round of showers and thunderstorms across the area late Wednesday into late Wednesday night. Due to wet antecedent conditions, the area is susceptible to flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ JT
539 WGUS61 KOKX 081620 FFAOKX Flood Watch National Weather Service New York NY 1220 PM EDT Wed Sep 8 2021 NJZ002-004-006-103>108-NYZ067-069-090030- /O.CON.KOKX.FF.A.0009.210908T2100Z-210909T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen- Western Essex-Eastern Essex-Western Union-Eastern Union-Orange- Rockland- 1220 PM EDT Wed Sep 8 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 5 PM EDT THIS AFTERNOON THROUGH LATE TONIGHT... The Flash Flood Watch continues for * Portions of northeast New Jersey and southeast New York, including the following areas, in northeast New Jersey, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Western Bergen, Western Essex, Western Passaic and Western Union. In southeast New York, Orange and Rockland. * From 5 PM EDT this afternoon through late tonight. * A cold frontal passage will produce a round of showers and thunderstorms late today into tonight. Due to wet antecedent conditions, the area is susceptible to flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Goodman
866 WGUS61 KOKX 090002 FFAOKX Flood Watch National Weather Service New York NY 802 PM EDT Wed Sep 8 2021 NJZ002-004-006-103>108-NYZ067-069-090800- /O.CON.KOKX.FF.A.0009.000000T0000Z-210909T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen- Western Essex-Eastern Essex-Western Union-Eastern Union-Orange- Rockland- 802 PM EDT Wed Sep 8 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM EDT THURSDAY... The Flash Flood Watch continues for * Portions of northeast New Jersey and southeast New York, including the following areas, in northeast New Jersey, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Western Bergen, Western Essex, Western Passaic and Western Union. In southeast New York, Orange and Rockland. * Until 4 AM EDT Thursday. * A cold frontal passage will produce a round of showers and thunderstorms tonight through the early morning hours. Due to wet antecedent conditions, the area is susceptible to flooding. * Locally heavy rainfall may produce flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ DW
572 WGUS61 KOKX 090627 FFAOKX Flood Watch National Weather Service New York NY 227 AM EDT Thu Sep 9 2021 NJZ002-004-006-103>108-NYZ067-069-090730- /O.CAN.KOKX.FF.A.0009.000000T0000Z-210909T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen- Western Essex-Eastern Essex-Western Union-Eastern Union-Orange- Rockland- 227 AM EDT Thu Sep 9 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of northeast New Jersey and southeast New York, including the following areas, in northeast New Jersey, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Western Bergen, Western Essex, Western Passaic and Western Union. In southeast New York, Orange and Rockland has been cancelled. Flooding is no longer expected to pose a threat. $$ JT
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 3:39 AM EDT | Small Craft Advisory | OKX | 6 days | |
| Sep 7, 3:31 PM EDT | Rip Current Statement | OKX | Kings, Nassau, Queens, Suffolk | 5 days |
Nearby
Flash Flood Watches in New Jersey, 2021Flash Flood Watches in New York, 2021Every flash 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.