Alert archive / New York / Coastal Flood Statements in 2020

Coastal Flood Statement 47, NWS New York, NY

September 20, 20204 counties in New York; Essex County, Hudson County, Union County, New Jersey; Naugatuck Valley Planning Region, Connecticut

NWS New York, NY issued this coastal flood statement at Sep 20, 2020, 4:47 PM EDT for 4 counties in New York; Essex County, Hudson County, Union County, New Jersey; Naugatuck Valley Planning Region, Connecticut. It took effect at Sep 21, 2020, 10:00 AM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Sep 20, 2020, 4:47 PM EDT (20:47 UTC)
In effect from
Sep 21, 2020, 10:00 AM EDT
Expired
Sep 21, 2020, 5:00 PM EDT
In force
7 hr
Issued by
NWS New York, NY

Counties Naugatuck Valley Planning Region, CT, Essex County, NJ, Hudson County, NJ, Union County, NJ, Kings County, NY, Nassau County, NY, Richmond County, NY, Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 76 km from the middle of the area, began a volume at 20:49 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, 8.8 hours before the alert went out and 331 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, Chatham, MA at 12:00Z on 2020-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2020-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -60 square meters per square second.1939587897Sfc1 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
16 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
1347 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
-60 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 4:12 AM EDTCoastal Flood StatementOKXNassau, Queens21 hr
Sep 20, 3:38 PM EDTFrost AdvisoryOKXOrange, Putnam16 hr
Sep 20, 4:47 PM EDTCoastal Flood AdvisoryOKXNassau, Queens, Westchester24 hr

Nearby

Coastal Flood Statements in New York, 2020Coastal Flood Statements in New Jersey, 2020Coastal Flood Statements in Connecticut, 2020Every coastal flood statement in 2020

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.