Alert archive / Connecticut / Flash Flood Warnings in 2020
Flash Flood Warning 2, NWS New York, NY
NWS New York, NY issued this flash flood warning at Jun 11, 2020, 3:23 PM EDT for Greater Bridgeport Planning Region, Naugatuck Valley Planning Region, Connecticut; Westchester County, New York. It was in force for 61 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 11, 2020, 3:23 PM EDT (19:23 UTC)
- Expired
- Jun 11, 2020, 4:24 PM EDT
- In force
- 61 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Greater Bridgeport Planning Region, CT, Naugatuck Valley Planning Region, CT, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 75 km from the middle of the area, began a volume at 19:24 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 3:31 PM EDT | FLASH FLOOD | 1 Nne Danbury, CT | CLAPBOARD RIDGE ROAD BETWEEN FARM STREET AND VENTURA DRIVE IS CLOSED DUE TO FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.4 hours before the alert went out and 75 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
- 529 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 224 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
074
WGUS51 KOKX 111923
FFWOKX
CTC001-009-NYC119-112100-
/O.NEW.KOKX.FF.W.0002.200611T1923Z-200611T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
323 PM EDT Thu Jun 11 2020
The National Weather Service in Upton NY has issued a
* Flash Flood Warning for...
Fairfield County in southern Connecticut...
West central New Haven County in southern Connecticut...
Northern Westchester County in southeastern New York...
* Until 500 PM EDT.
* At 323 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to one inch of rain has
already fallen and an additional inch of rain is expected. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flooding include...
Stamford, Norwalk, Danbury, Shelton, Southbury, New Canaan, Mount
Kisco, Newtown, Fairfield, Greenwich, Trumbull, Westport,
Ridgefield, Monroe and Bethel.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
Please report flooding to your local law enforcement agency when you
can do so safely.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4151 7315 4130 7308 4104 7367 4107 7382
4117 7386 4136 7361 4137 7354 4142 7354
4149 7346 4150 7338 4149 7337 4147 7331
4149 7333 4151 7331
FLASH FLOOD...RADAR INDICATED
$$
DS2 follow-up statements
843
WGUS71 KOKX 111948
FFSOKX
Flash Flood Statement
National Weather Service New York NY
348 PM EDT Thu Jun 11 2020
NYC119-111957-
/O.CAN.KOKX.FF.W.0002.000000T0000Z-200611T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Westchester NY-
348 PM EDT Thu Jun 11 2020
...THE FLASH FLOOD WARNING FOR NORTHERN WESTCHESTER COUNTY IS
CANCELLED...
Flooding is no longer expected to pose a threat.
LAT...LON 4151 7315 4130 7308 4114 7346 4120 7350
4121 7348 4130 7355 4137 7354 4142 7354
4149 7346 4150 7338 4149 7337 4147 7331
4149 7333 4151 7331
$$
CTC001-009-112100-
/O.CON.KOKX.FF.W.0002.000000T0000Z-200611T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fairfield CT-New Haven CT-
348 PM EDT Thu Jun 11 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR
CENTRAL FAIRFIELD AND WEST CENTRAL NEW HAVEN COUNTIES...
At 347 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. One to one half inch of rain has
already fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Norwalk, Danbury, Shelton, Southbury, New Canaan, Newtown, Fairfield,
Trumbull, Westport, Ridgefield, Monroe, Bethel, Wilton, Seymour and
Brookfield.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
Excessive runoff from heavy rainfall will cause flooding of urban
areas, highways, streets and underpasses as well as other drainage
areas and low lying spots.
Please report flooding to your local law enforcement agency when you
can do so safely.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4151 7315 4130 7308 4114 7346 4120 7350
4121 7348 4130 7355 4137 7354 4142 7354
4149 7346 4150 7338 4149 7337 4147 7331
4149 7333 4151 7331
FLASH FLOOD...RADAR INDICATED
$$
DS458
WGUS71 KOKX 112024
FFSOKX
Flash Flood Statement
National Weather Service New York NY
424 PM EDT Thu Jun 11 2020
CTC001-009-112033-
/O.CAN.KOKX.FF.W.0002.000000T0000Z-200611T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fairfield CT-New Haven CT-
424 PM EDT Thu Jun 11 2020
...THE FLASH FLOOD WARNING FOR CENTRAL FAIRFIELD AND WEST CENTRAL NEW
HAVEN COUNTIES IS CANCELLED...
The heavy rain has ended and flooding is no longer expected to pose
a threat. Please continue to heed any remaining road closures.
LAT...LON 4151 7315 4130 7308 4114 7346 4120 7350
4121 7348 4130 7355 4137 7354 4142 7354
4149 7346 4150 7338 4149 7337 4147 7331
4149 7333 4151 7331
$$
DWThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 2:36 PM EDT | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 84 min |
| Jun 11, 3:11 PM EDT | Areal Flood Advisory | OKX | Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region | 94 min |
| Jun 11, 1:39 PM EDT | Areal Flood Advisory | OKX | Kings, Nassau, Queens | 66 min |
| Jun 11, 2:44 PM EDT | Flash Flood Warning | OKX | Kings, Nassau, Queens | 91 min |
| Jun 11, 3:05 PM EDT | Areal Flood Advisory | OKX | Suffolk | 85 min |
Nearby
Flash Flood Warnings in Connecticut, 2020Flash Flood Warnings in New York, 2020Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.