Alert archive / New York / Flash Flood Warnings in 1996

Flash Flood Warning 39, NWS New York, NY

September 8, 1996Richmond County, New York

NWS New York, NY issued this flash flood warning at Sep 8, 1996, 3:28 PM EDT for Richmond County, New York. It was in force for 62 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
Sep 8, 1996, 3:28 PM EDT (19:28 UTC)
Expired
Sep 8, 1996, 4:30 PM EDT
In force
62 min
Issued by
NWS New York, NY
Area
Whole counties

County Richmond County, NY

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 19:28 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.5 hours before the alert went out and 113 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 1996-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 153 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 1996-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 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
153 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
566 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
196 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 
TTAA00 KNYC 081929
FFWNYC
NYC047-061-085-082030-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
328 PM EDT SUN SEP 8 1996
 
THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  430 PM EDT
FOR THE PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST NEW YORK
 
   ...KINGS COUNTY...NEW YORK COUNTY...RICHMOND COUNTY
 
DOPPLER RADAR INDICICAT
ED A THUNDERSTORM WITH VERY HEAVY RAIN WAS
APPROACHING STATEN ISLAND. THIS STORM HAS A PAST HISTORY OF PRODUCING
EXTREMELY HEAVY RAIN...GUSTY WINDS AND POSSIBLE HAIL.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 3:28 PM EDTFlash Flood WarningOKXNew York62 min
Sep 8, 3:28 PM EDTFlash Flood WarningOKXKings62 min
Sep 8, 3:28 PM EDTSevere Thunderstorm WarningOKXKings62 min
Sep 8, 3:28 PM EDTSevere Thunderstorm WarningOKXRichmond62 min
Sep 8, 3:28 PM EDTSevere Thunderstorm WarningOKXNew York62 min
Sep 8, 3:43 PM EDTFlash Flood WarningOKXBronx47 min
Sep 8, 3:43 PM EDTFlash Flood WarningOKXQueens47 min
Sep 8, 4:02 PM EDTFlash Flood WarningOKXNassau58 min
Sep 8, 4:21 PM EDTFlash Flood WarningOKXOrange69 min
Sep 8, 4:21 PM EDTSevere Thunderstorm WarningOKXOrange69 min

Nearby

Flash Flood Warnings in New York, 1996Every flash flood warning in 1996

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.