Alert archive / Connecticut / Coastal Flood Statements in 2021

Coastal Flood Statement 12, NWS New York, NY

April 11, 2021Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this coastal flood statement at Apr 11, 2021, 3:19 PM EDT for Greater Bridgeport Planning Region, Connecticut. It took effect at Apr 11, 2021, 11:00 PM EDT. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Apr 11, 2021, 3:19 PM EDT (19:19 UTC)
In effect from
Apr 11, 2021, 11:00 PM EDT
Expired
Apr 12, 2021, 1:00 AM EDT
In force
2 hr
Issued by
NWS New York, NY

County Greater Bridgeport Planning Region, CT

The radar

The Brookhaven radar (KOKX), 52 km from the middle of the area, began a volume at 19:21 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, 7.3 hours before the alert went out and 52 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 12:00Z on 2021-04-11Temperature 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 12:00Z on 2021-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 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
814 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

646 
WHUS41 KOKX 111919
CFWOKX

Coastal Hazard Message
National Weather Service Upton NY
319 PM EDT Sun Apr 11 2021

NYZ074-075-178-179-120200-
/O.NEW.KOKX.CF.S.0011.210412T0000Z-210412T0200Z/
Richmond (Staten Island)-Kings (Brooklyn)-Southern Queens-
Southern Nassau-
319 PM EDT Sun Apr 11 2021

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

* WHERE...Southern Nassau, Southern Queens, Richmond (Staten 
  Island) and Kings (Brooklyn) Counties.

* WHEN...From 8 PM to 10 PM EDT this evening.

* IMPACTS...Brief minor flooding of the more vulnerable 
  locations near the waterfront. Some water on low lying
  roads and property.

* ADDITIONAL DETAILS...A coastal flood statement may be needed for
  the Monday morning high tide cycle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

CTZ009-120500-
/O.NEW.KOKX.CF.S.0012.210412T0300Z-210412T0500Z/
Southern Fairfield-
319 PM EDT Sun Apr 11 2021

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

* WHERE...Southern Fairfield County.

* WHEN...From 11 PM this evening to 1 AM EDT Monday.

* IMPACTS...Brief minor flooding of the more vulnerable 
  locations near the waterfront. Some water on low lying
  roads and property.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc
1 follow-up statement
199 
WHUS41 KOKX 120501
CFWOKX

Coastal Hazard Message
National Weather Service Upton NY
101 AM EDT Mon Apr 12 2021

CTZ009-120615-
/O.EXP.KOKX.CF.S.0012.000000T0000Z-210412T0500Z/
Southern Fairfield-
101 AM EDT Mon Apr 12 2021

Coastal flooding is no longer expected tonight so the statement has
been allowed to expire.

$$

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
Apr 11, 2:40 AM EDTDense Fog AdvisoryOKXGreater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region7 hr

Nearby

Coastal Flood Statements in Connecticut, 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.