Alert archive / Connecticut / Flash Flood Warnings in 2005

Flash Flood Warning 4, NWS New York, NY

June 29, 2005Greater Bridgeport Planning Region, Connecticut; Westchester County, New York

NWS New York, NY issued this flash flood warning at Jun 29, 2005, 3:38 PM EDT for Greater Bridgeport Planning Region, Connecticut; Westchester County, New York. It was in force for 3 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
Jun 29, 2005, 3:38 PM EDT (19:38 UTC)
Expired
Jun 29, 2005, 6:45 PM EDT
In force
3 hr
Issued by
NWS New York, NY
Area
Counties, with a storm outline in the text

Counties Greater Bridgeport Planning Region, CT, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 61 km from the middle of the area, began a volume at 19:40 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
Jun 29, 3:45 PM EDTFLASH FLOOD5 Nne New Canaan, CTWIDESPREAD FLOODING
Jun 29, 4:30 PM EDTFLASH FLOODArmonk, NYROAD FLOODING - ROUTE 22 IMPASSABLE

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, 7.6 hours before the alert went out and 61 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 2005-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 753 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 2005-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
753 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
901 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
96 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.

000 
WGUS51 KOKX 291942
FFWOKX
CTC001-NYC119-292245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE UPTON NY
338 PM EDT WED JUN 29 2005

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT.
  WESTCHESTER COUNTY IN SOUTHEAST NEW YORK.

* UNTIL 645 PM EDT.

* AT 332 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
  DOPPLER RADAR ESTIMATED UP TO 2 INCHES OF RAIN HAD FALLEN IN 
  FAIRFIELD COUNTY NEAR NEAR NEW CANAAN IN FAIRFIELD COUNTY...WITH 
  MORE HEAVY RAIN ON THE WAY.

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN 
  THE WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE 
  FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE 
  FLOODING INCLUDE...DOBBS FERRY...NEW CANAAN...NORTH TARRYTOWN... 
  SHELTON...TARRYTOWN...BEDFORD...GEORGETOWN...HAWTHORNE... 
  NORTH GREENWICH... TRUMBULL...WHITE PLAINS AIRPORT AND ARDSLEY. 

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

A FLASH FLOODING 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 4137 7313 4127 7306 4098 7389 4111 7390

$$

GOODMAN
2 follow-up statements
000 
WGUS71 KOKX 292115
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE UPTON NY
515 PM EDT WED JUN 29 2005

CTC001-NYC119-292245-
FAIRFIELD CT-WESTCHESTER NY-
515 PM EDT WED JUN 29 2005

...FLASH FLOOD WARNING CONTINUES FOR FAIRFIELD AND WESTCHESTER
COUNTIES UNTIL 645 PM EDT...

AT 510 PM EDT...WEATHER SPOTTERS REPORTED AN AREA OF VERY HEAVY 
RAINFALL ACROSS SOUTHERN WESTCHESTER COUNTY IN NEW YORK. ROUTE 22 IN 
ARMONK HAVE BEEN REPORTED AS IMPASSABLE. THE WARNED AREA HAS 
RECEIVED 3 TO 5 INCHES OF RAIN SINCE ABOUT 330 PM.

HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA. RUNOFF FROM THIS
EXCESSIVE RAINFALL WILL CAUSE FLOODING TO OCCUR. SOME LOCATIONS THAT
WILL EXPERIENCE FLOODING INCLUDE...DOBBS FERRY...NEW CANAAN...NORTH
TARRYTOWN...SHELTON...TARRYTOWN...BEDFORD...GEORGETOWN...HAWTHORNE...
NORTH GREENWICH...TRUMBULL...WHITE PLAINS AIRPORT AND ARDSLEY.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. 
MOVE TO HIGHER GROUND.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

LAT...LON 4137 7313 4127 7306 4098 7389 4103 7388
      4111 7390

$$

MET
000 
WGUS71 KOKX 292246
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE UPTON NY
645 PM EDT WED JUN 29 2005

CTC001-NYC119-292345-
FAIRFIELD CT-WESTCHESTER NY-
645 PM EDT WED JUN 29 2005

...FLASH FLOOD WARNING FOR FAIRFIELD AND WESTCHESTER COUNTIES HAS 
EXPIRED...

THE HEAVY RAINS HAVE MOVED OUT OF THE WARNED AREA DURING THE PAST 
HOUR OR SO AND FLOOD WATERS ARE RECEDING...SO THE FLASH FLOOD 
WARNING HAS BEEN ALLOWED TO EXPIRE.

HOWEVER...THERE WILL BE ADDITIONAL LIGHT TO OCCASIONALLY MODERATE 
RAIN THROUGH THE EARLY EVENING.

LAT...LON 4137 7313 4127 7306 4098 7389 4103 7388
      4111 7390

$$

MET

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 2:46 PM EDTSevere Thunderstorm WarningOKXGreater Bridgeport Planning Region44 min
Jun 29, 4:05 PM EDTFlash Flood WarningOKXNaugatuck Valley Planning Region3 hr
Jun 29, 4:04 PM EDTFlash Flood WarningOKXRockland3 hr

Nearby

Flash Flood Warnings in Connecticut, 2005Flash Flood Warnings in New York, 2005Every flash flood warning in 2005

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.