Alert archive / New York / Flash Flood Watches in 2018
Flash Flood Watch 11, NWS New York, NY
NWS New York, NY issued this flash flood watch at Sep 27, 2018, 12:16 PM EDT for 8 counties in New York; 5 counties in New Jersey; 4 counties in Connecticut. It took effect at Sep 28, 2018, 4:00 AM EDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Sep 27, 2018, 12:16 PM EDT (16:16 UTC)
- In effect from
- Sep 28, 2018, 4:00 AM EDT
- Expired
- Sep 28, 2018, 8:35 AM EDT
- In force
- 5 hr
- Issued by
- NWS New York, NY
- Flood severity
- None
Counties Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 72 km from the middle of the area, began a volume at 16:14 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
Chatham, MA (KCHH), launched 12:00Z, 4.3 hours before the alert went out and 322 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
- 566 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 213 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New York, NY wrote its last area forecast discussion before this flash flood watch went out at Sep 27, 9:32 AM EDT, 2 hours 44 minutes earlier.
Area forecast discussion, Sep 27, 9:32 AM EDT, 2 hours 44 minutes before
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</html>Hazardous weather outlook, Sep 27, 4:35 AM EDT, 7 hours 41 minutes before
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Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 26, 8:07 PM EDT | Special Weather Statement | OKX | Putnam | 53 min |
| Sep 26, 8:17 PM EDT | Special Weather Statement | OKX | Rockland, Westchester | 43 min |
| Sep 26, 9:03 PM EDT | Special Weather Statement | OKX | Westchester | 57 min |
| Sep 26, 9:11 PM EDT | Areal Flood Advisory | OKX | Putnam, Westchester | 2 hr |
| Sep 26, 10:14 PM EDT | Special Weather Statement | OKX | Nassau | 46 min |
| Sep 26, 10:54 PM EDT | Special Weather Statement | OKX | Suffolk | 51 min |
| Sep 26, 10:19 PM EDT | Areal Flood Advisory | OKX | Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region | 116 min |
Nearby
Flash Flood Watches in New York, 2018Flash Flood Watches in New Jersey, 2018Flash Flood Watches in Connecticut, 2018Every flash flood watch in 2018
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.