Alert archive / New York / Flash Flood Watches in 2019

Flash Flood Watch 6, NWS New York, NY

July 17, 201911 counties in New York; 5 counties in New Jersey; 4 counties in Connecticut

NWS New York, NY issued this flash flood watch at Jul 17, 2019, 5:16 AM EDT for 11 counties in New York; 5 counties in New Jersey; 4 counties in Connecticut. It took effect at Jul 17, 2019, 2:00 PM EDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Jul 17, 2019, 5:16 AM EDT (09:16 UTC)
In effect from: Jul 17, 2019, 2:00 PM EDT
Expired: Jul 18, 2019, 12:41 AM EDT
In force: 11 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, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Suffolk County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 71 km from the middle of the area, began a volume at 09:17 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 00:00Z, 9.3 hours before the alert went out and 71 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 32 J/kg
Mixed-layer CIN: -202 J/kg
Mixed-layer LCL: 1407 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 132 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jul 17, 2:03 AM EDT, 3 hours 13 minutes earlier.

Area forecast discussion, Jul 17, 2:03 AM EDT, 3 hours 13 minutes before

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Hazardous weather outlook, Jul 16, 6:41 PM EDT, 10 hours 35 minutes before

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The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 10:55 AM EDT	Heat Advisory	OKX	Bronx, Kings, Nassau, New York, Queens, Richmond and 1 more	9 hr
Jul 17, 12:51 PM EDT	Special Weather Statement	OKX	Orange	39 min
Jul 17, 1:05 PM EDT	Special Weather Statement	OKX	Suffolk	40 min
Jul 17, 1:59 PM EDT	Special Weather Statement	OKX	Orange	46 min
Jul 17, 2:31 PM EDT	Special Weather Statement	OKX	Orange	44 min
Jul 17, 2:44 PM EDT	Special Weather Statement	OKX	Orange	46 min
Jul 17, 2:48 PM EDT	Special Marine Warning	OKX		27 min
Jul 17, 3:59 PM EDT	Excessive Heat Watch	OKX	Bronx, Kings, Nassau, New York, Orange, Putnam and 5 more	24 hr
Jul 17, 5:29 PM EDT	Special Marine Warning	OKX		46 min
Jul 17, 7:01 PM EDT	Areal Flood Advisory	OKX	Orange, Putnam, Rockland, Westchester	3 hr
Jul 17, 7:19 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Kings, Nassau, New York, Orange, Queens and 3 more	41 min
Jul 17, 7:22 PM EDT	Special Marine Warning	OKX		83 min
Jul 17, 7:53 PM EDT	Areal Flood Advisory	OKX	Bronx, Kings, Nassau, New York, Queens, Richmond and 2 more	3 hr
Jul 17, 6:50 PM EDT	Special Weather Statement	OKX	Passaic	40 min
Jul 17, 3:00 PM EDT	Special Weather Statement	OKX		45 min
Jul 17, 3:20 PM EDT	Special Weather Statement	OKX		40 min
Jul 17, 3:45 PM EDT	Severe Thunderstorm Warning	OKX	Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	45 min
Jul 17, 4:27 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	48 min
Jul 17, 4:49 PM EDT	Areal Flood Advisory	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	89 min
Jul 17, 5:17 PM EDT	Special Weather Statement	OKX		58 min

Nearby

Flash Flood Watches in New York, 2019 Flash Flood Watches in New Jersey, 2019 Flash Flood Watches in Connecticut, 2019 Every flash 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.