Alert archive / New York / Coastal Flood Statements in 2021

Coastal Flood Statement 7, NWS New York, NY

February 3, 2021Nassau County, Suffolk County, New York

NWS New York, NY issued this coastal flood statement at Feb 3, 2021, 6:06 AM EST for Nassau County, Suffolk County, New York. It took effect at Feb 3, 2021, 11:00 AM EST. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Feb 3, 2021, 6:06 AM EST (11:06 UTC)
In effect from
Feb 3, 2021, 11:00 AM EST
Expired
Feb 3, 2021, 4:00 PM EST
In force
5 hr
Issued by
NWS New York, NY

Counties Nassau County, NY, Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 23 km from the middle of the area, began a volume at 11:03 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, 11.1 hours before the alert went out and 23 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 00:00Z on 2021-02-03Temperature 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 00:00Z on 2021-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.1939Sfc1 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
493 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

007 
WHUS41 KOKX 031106
CFWOKX

Coastal Hazard Message
National Weather Service Upton NY
606 AM EST Wed Feb 3 2021

NYZ179-031800-
/O.NEW.KOKX.CF.S.0007.210203T1600Z-210203T1800Z/
Southern Nassau-
606 AM EST Wed Feb 3 2021

* WHAT...Up to one half foot of inundation above ground level 
  expected in vulnerable areas near the waterfront and shoreline.

* WHERE...Southern Nassau County.

* WHEN...From 11 AM this morning to 1 PM EST this afternoon.

* IMPACTS...Brief minor flooding of the more vulnerable 
  locations near the waterfront and shoreline. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

NYZ080-032100-
/O.NEW.KOKX.CF.S.0007.210203T1800Z-210203T2100Z/
Southwestern Suffolk-
606 AM EST Wed Feb 3 2021

* WHAT...Up to one half foot of inundation above ground level 
  expected in vulnerable areas near the waterfront and shoreline.

* WHERE...Southwestern Suffolk County.

* WHEN...From 1 PM to 4 PM EST this afternoon.

* IMPACTS...Brief minor flooding of the more vulnerable 
  locations near the waterfront and shoreline.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 3, 3:30 AM ESTSmall Craft AdvisoryOKX30 hr

Nearby

Coastal Flood Statements in New York, 2021Every coastal flood statement 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.