Alert archive / New York / Flash Flood Warnings in 1993

Flash Flood Warning 14, NWS New York, NY

April 1, 1993Nassau County, New York

NWS New York, NY issued this flash flood warning at Apr 1, 1993, 11:38 PM EST for Nassau County, New York. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Apr 1, 1993, 11:38 PM EST (04:38 UTC)
Expired
Apr 2, 1993, 1:45 AM EST
In force
2 hr
Issued by
NWS New York, NY
Area
Whole counties

County Nassau County, NY

The nearest sounding before it

Albany, NY (KALB), launched 00:00Z, 4.6 hours before the alert went out and 219 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, Albany, NY at 00:00Z on 1993-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Albany, NY at 00:00Z on 1993-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 205 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
205 m²/s²
0-3 km storm-relative helicity
256 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 1, 11:11 PM ESTFlash Flood WarningOKXGreater Bridgeport Planning Region, Naugatuck Valley Planning Region4 hr
Apr 1, 11:11 PM ESTFlash Flood WarningOKXGreater Bridgeport Planning Region2 hr

Nearby

Flash Flood Warnings in New York, 1993Every flash flood warning in 1993

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.