Alert archive / Connecticut / Flash Flood Warnings in 2011
Flash Flood Warning 38, NWS New York, NY
NWS New York, NY issued this flash flood warning at Sep 23, 2011, 3:45 PM EDT for Greater Bridgeport Planning Region, Naugatuck Valley Planning Region, Connecticut. It was in force for 2 hr. 2 reports 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
- Sep 23, 2011, 3:45 PM EDT (19:45 UTC)
- Expired
- Sep 23, 2011, 5:45 PM EDT
- In force
- 2 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Greater Bridgeport Planning Region, CT, Naugatuck Valley Planning Region, CT
The radar
The Brookhaven radar (KOKX), 71 km from the middle of the area, began a volume at 19:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 23, 4:00 PM EDT | FLASH FLOOD | Danbury, CT | STANDING WATER ON MAIN STREET NEAR INTERSECTION WITH WOOSTER STREET... ROAD CLOSED FOR VERY SHORT PERIOD OF TIME |
| Sep 23, 5:00 PM EDT | FLASH FLOOD | Norwalk, CT | MEADOW STREET AT WILSON AND WATER STREET BARRICADED 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, 7.8 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.
- Mixed-layer CAPE
- 454 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 434 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
344
WGUS51 KOKX 231945
FFWOKX
CTC001-009-232145-
/O.NEW.KOKX.FF.W.0038.110923T1945Z-110923T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
345 PM EDT FRI SEP 23 2011
THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN NEW HAVEN COUNTY IN SOUTHERN CONNECTICUT...
FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT...
* UNTIL 545 PM EDT...
* AT 340 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
MODERATE TO HEAVY RAINFALL MOVING ACROSS THE WARNING AREA. RAINFALL
RATES OF ONE TO ONE AN A HALF INCHES PER HOUR ARE POSSIBLE WITH
LOCALLY HIGHER AMOUNTS. 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.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN UPTON
NY.
&&
LAT...LON 4166 7352 4162 7348 4151 7344 4152 7339
4148 7334 4151 7333 4152 7317 4156 7316
4157 7310 4161 7305 4164 7294 4145 7293
4115 7311 4117 7317 4112 7324 4110 7335
4107 7340 4103 7352 4138 7333 4136 7355
$$1 follow-up statement
032
WGUS71 KOKX 232139
FFSOKX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
539 PM EDT FRI SEP 23 2011
CTC001-009-232148-
/O.EXP.KOKX.FF.W.0038.000000T0000Z-110923T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAIRFIELD CT-NEW HAVEN CT-
539 PM EDT FRI SEP 23 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 545 PM EDT FOR WESTERN NEW
HAVEN AND FAIRFIELD COUNTIES...
HEAVY RAIN HAS LIFTED NORTH OF THE AREA ENDING THE IMMINENT THREAT
FOR FLASH FLOODING...THEREFORE THE FLASH FLOOD WARNING WILL BE
ALLOWED TO EXPIRE.
LAT...LON 4166 7352 4162 7348 4151 7344 4152 7339
4148 7334 4151 7333 4152 7317 4156 7316
4157 7310 4161 7305 4164 7294 4145 7293
4115 7311 4117 7317 4112 7324 4110 7335
4107 7340 4103 7352 4138 7333 4136 7355
$$The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 2:37 AM EDT | Dense Fog Advisory | OKX | Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region | 6 hr |
| Sep 23, 3:13 PM EDT | Flash Flood Warning | OKX | Greater Bridgeport Planning Region | 103 min |
Nearby
Flash Flood Warnings in Connecticut, 2011Every flash flood warning in 2011
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.