Alert archive / Connecticut / Flash Flood Warnings in 2012

Flash Flood Warning 7, NWS New York, NY

July 15, 2012Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this flash flood warning at Jul 15, 2012, 5:28 PM EDT for Greater Bridgeport Planning Region, Connecticut. It was in force for 92 min. 10 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
Jul 15, 2012, 5:28 PM EDT (21:28 UTC)
Expired
Jul 15, 2012, 7:00 PM EDT
In force
92 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Flood severity
None

County Greater Bridgeport Planning Region, CT

The radar

The Brookhaven radar (KOKX), 49 km from the middle of the area, began a volume at 21:28 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

TimeReportWhereRemark
Jul 15, 5:32 PM EDTFLASH FLOOD1 Nnw Norwalk, CTCAR STUCK DUE TO FLASH FLOODING
Jul 15, 5:40 PM EDTFLASH FLOOD1 Ese Winnipauk Village, CTCARS STUCK IN 4 FT OF WATER ON MERRILL RD
Jul 15, 5:47 PM EDTFLASH FLOOD1 Wnw East Norwalk, CTCAR STUCK WITH WATER UP TO DOORS AT EAST AVE AND RAYMOND TERRACE
Jul 15, 5:49 PM EDTFLASH FLOODNorwalk, CTI-95 SOUTHBOUND CLOSED WITH CARS STUCK
Jul 15, 5:53 PM EDTFLASH FLOOD1 Wsw Winnipauk Village, CTHOUSE BASEMENT FLOODED ON HUNTERS LN
Jul 15, 5:53 PM EDTFLASH FLOODWinnipauk Village, CTFLASH FLOODING INTO HOME ON GLENNDENNING ST
Jul 15, 6:09 PM EDTFLASH FLOODNorthfield, CT4 FT OF WATER IN GARAGE ON HOYT ST
Jul 15, 6:11 PM EDTFLASH FLOOD1 Sse Glenbrook, CTFLOODING IN BASEMENT ON LINCOLN ST
Jul 15, 6:28 PM EDTFLASH FLOODBelltown, CTPERSON STUCK IN HOME ON RESEARCH DR DUE TO FLOODING
Jul 15, 6:34 PM EDTFLASH FLOODBelltown, CTWATER IN BASEMENT OF HOME ON LEDGE LN

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, 9.5 hours before the alert went out and 49 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 2012-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 joules per kilogram.LCLLFCEL10008507005003002001001 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 2012-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
88 J/kg
Mixed-layer CIN
-110 J/kg
Mixed-layer LCL
912 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

881 
WGUS51 KOKX 152128
FFWOKX
CTC001-152300-
/O.NEW.KOKX.FF.W.0007.120715T2128Z-120715T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
528 PM EDT SUN JUL 15 2012

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT...

* UNTIL 700 PM EDT...

* AT 523 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORMS OVER THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 4127 7310 4119 7312 4114 7311 4116 7320
      4111 7326 4112 7330 4110 7334 4107 7335
      4105 7340 4105 7344 4102 7351 4100 7365
      4111 7372 4119 7353

$$

DSW
2 follow-up statements
540 
WGUS71 KOKX 152217
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
617 PM EDT SUN JUL 15 2012

CTC001-152300-
/O.CON.KOKX.FF.W.0007.000000T0000Z-120715T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAIRFIELD CT-
617 PM EDT SUN JUL 15 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
FAIRFIELD COUNTY...

AT 614 PM...WHILE THE HEAVY RAIN HAS MOVED OFFSHORE INTO WESTERN 
LONG ISLAND SOUND...THERE REMAIN NUMEROUS REPORTS OF FLOODING
ACROSS THE WARNING AREA. URBAN FLOODING REMAINS A THREAT.  

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.

&&

LAT...LON 4127 7310 4119 7312 4114 7311 4116 7320
      4111 7326 4112 7330 4110 7334 4107 7335
      4105 7340 4105 7344 4102 7351 4100 7365
      4111 7372 4119 7353

$$

DSW
151 
WGUS71 KOKX 152304
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
704 PM EDT SUN JUL 15 2012

CTC001-152314-
/O.EXP.KOKX.FF.W.0007.000000T0000Z-120715T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAIRFIELD CT-
704 PM EDT SUN JUL 15 2012

...THE FLASH FLOOD WARNING HAS EXPIRED FOR FAIRFIELD COUNTY...

LAT...LON 4127 7310 4119 7312 4114 7311 4116 7320
      4111 7326 4112 7330 4110 7334 4107 7335
      4105 7340 4105 7344 4102 7351 4100 7365
      4111 7372 4119 7353

$$

DSW

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 3:43 PM EDTSevere Thunderstorm WarningOKXGreater Bridgeport Planning Region47 min
Jul 15, 3:50 PM EDTHeat AdvisoryOKXGreater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region3 days
Jul 15, 4:31 PM EDTSpecial Weather StatementOKX59 min
Jul 15, 4:39 PM EDTSevere Thunderstorm WarningOKXGreater Bridgeport Planning Region51 min
Jul 15, 4:57 PM EDTAreal Flood AdvisoryOKXGreater Bridgeport Planning Region63 min
Jul 15, 5:35 PM EDTSpecial Weather StatementOKX25 min
Jul 15, 7:40 PM EDTSpecial Weather StatementOKX65 min

Nearby

Flash Flood Warnings in Connecticut, 2012Every flash flood warning in 2012

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.