Alert archive / New York / Flash Flood Warnings in 2004

Flash Flood Warning 35, NWS New York, NY

September 8, 2004Greater Bridgeport Planning Region, Connecticut; 4 counties in New York

NWS New York, NY issued this flash flood warning at Sep 8, 2004, 11:49 AM EDT for Greater Bridgeport Planning Region, Connecticut; 4 counties in New York. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 8, 2004, 11:49 AM EDT (15:49 UTC)
Expired
Sep 8, 2004, 2:45 PM EDT
In force
3 hr
Issued by
NWS New York, NY
Area
Whole counties

Counties Greater Bridgeport Planning Region, CT, Orange County, NY, Putnam County, NY, Rockland County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 92 km from the middle of the area, began a volume at 15:50 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, 3.8 hours before the alert went out and 92 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 2004-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 327 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 2004-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
327 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
602 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KOKX 081551
FFWOKX
CTC001-NYC071-079-087-119-081845-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE UPTON NY
1149 AM EDT WED SEP 8 2004

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

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

* UNTIL 245 PM EDT

* AT 1145 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED VERY HEAVY RAIN OVER THE AREA WHICH WAS                  
  NEARLY STATIONARY.

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP 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. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

$$

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
UPTON NY.

LAT...LON 4136 7468 4150 7475 4161 7435 4159 7398
      4148 7396 4157 7343 4137 7315 4117 7312
      4098 7365 4090 7379 4092 7391 4101 7389
2 follow-up statements
000 
WGUS71 KOKX 081818
FFSOKX
CTC001-NYC071-079-087-119-081845-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE UPTON NY
215 PM EDT WED SEP 8 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 245 PM EDT FOR 
ORANGE...PUTNAM....ROCKLAND...WESTCHESTER COUNTIES IN SOUTHEAST NEW 
YORK AND FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT.

NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUES TO INDICATED 
MODERATE SHOWERS OVER THE REGION MOVING NORTH AT 20 MPH. THESE 
SHOWERS ARE PRODUCING ONE QUARTER TO ONE HALF AND INCH PER HOUR 
RAINFALL RATES. 

RAINFALL TOTALS SO FAR TODAY ARE IN THE 1 TO 2 INCH RANGE...WITH 
LOCALIZED AMOUNTS OF 3 TO 4 INCHES...MAINLY IN ROCKLAND AND 
WESTCHESTER COUNTIES. 

WHILE MODERATE RAINFALL IS EXPECTED TO CONTINUE THIS 
AFTERNOON....FLOOD WATERS ARE EXPECTED TO SLOWLY RECEDE. ADDITIONAL 
RAINFALL AMOUNTS ARE EXPECTED TO AVERAGE ONE HALF UP TO ONE INCH 
THROUGH THIS EVENING.    

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO
HIGHER GROUND.

$$
000 
WGUS71 KOKX 081832 CCA
FFSOKX
CTC001-NYC071-079-087-119-081845-

FLASH FLOOD STATEMENT...CORRECTION 
NATIONAL WEATHER SERVICE UPTON NY
215 PM EDT WED SEP 8 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 245 PM EDT FOR 
ORANGE...PUTNAM....ROCKLAND...WESTCHESTER COUNTIES IN SOUTHEAST NEW 
YORK AND FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT.

NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUES TO INDICATE 
MODERATE SHOWERS OVER THE REGION MOVING NORTH AT 20 MPH. THESE 
SHOWERS ARE PRODUCING ONE QUARTER TO ONE HALF AN INCH PER HOUR 
RAINFALL RATES. 

RAINFALL TOTALS SO FAR TODAY ARE IN THE 1 TO 2 INCH RANGE...WITH 
LOCALIZED AMOUNTS OF 3 TO 4 INCHES...MAINLY IN ROCKLAND AND 
WESTCHESTER COUNTIES. 

WHILE MODERATE RAINFALL IS EXPECTED TO CONTINUE THIS 
AFTERNOON....FLOOD WATERS ARE EXPECTED TO SLOWLY RECEDE. ADDITIONAL 
RAINFALL AMOUNTS ARE EXPECTED TO AVERAGE ONE HALF UP TO ONE INCH 
THROUGH THIS EVENING.    

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO
HIGHER GROUND.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 7:51 AM EDTFlash Flood WarningOKXGreater Bridgeport Planning Region2 hr
Sep 8, 5:01 AM EDTFlash Flood WarningOKXNassau, Suffolk89 min
Sep 8, 6:32 AM EDTFlash Flood WarningOKXNassau, Suffolk88 min
Sep 8, 7:19 AM EDTFlash Flood WarningOKXBronx, Kings, New York, Queens116 min
Sep 8, 9:08 AM EDTFlash Flood WarningOKXBronx97 min

Nearby

Flash Flood Warnings in New York, 2004Flash Flood Warnings in Connecticut, 2004Every flash flood warning in 2004

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.