Alert archive / Connecticut / Flash Flood Warnings in 1997

Flash Flood Warning 3, NWS New York, NY

July 9, 1997Naugatuck Valley Planning Region, Connecticut

NWS New York, NY issued this flash flood warning at Jul 9, 1997, 5:11 PM EDT for Naugatuck Valley Planning Region, Connecticut. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 9, 1997, 5:11 PM EDT (21:11 UTC)
Expired: Jul 9, 1997, 6:15 PM EDT
In force: 64 min
Issued by: NWS New York, NY
Area: Whole counties

County Naugatuck Valley Planning Region, CT

The radar

The Brookhaven radar (KOKX), 75 km from the middle of the area, began a volume at 21:14 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, 9.2 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 64 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 1127 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNYC 092114
FFWNYC
CTC009-092215-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
511 PM EDT WED JUL 9 1997
 
THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  615 PM EDT
FOR THE PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL CONNECTICUT
 
   ...NORTHERN NEW HAVEN COUNTY
 
AT 510 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
SEVERE THUNDERSTORM ABOUT TO ENTER NORTHWEST NEW HAVEN COUNTY. THESE
THUNDERSTORMS HAVE A HISTORY OF PRODUCING WIND DAMAGE AS WELL AS
FLOODING OF STREETS AND LOW LYING AREAS.
 
MOVEMENT WAS EAST AT 35 MILES AN HOUR.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT.
 
HAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 3:30 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region	60 min
Jul 9, 3:58 PM EDT	Severe Thunderstorm Warning	OKX	Naugatuck Valley Planning Region	62 min
Jul 9, 4:28 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region	62 min
Jul 9, 5:11 PM EDT	Severe Thunderstorm Warning	OKX	Naugatuck Valley Planning Region	64 min
Jul 9, 6:03 PM EDT	Flash Flood Warning	OKX	Greater Bridgeport Planning Region	117 min
Jul 9, 6:12 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region	63 min
Jul 9, 6:14 PM EDT	Severe Thunderstorm Warning	OKX	Naugatuck Valley Planning Region	61 min

Nearby

Flash Flood Warnings in Connecticut, 1997 Every flash flood warning in 1997

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.