Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 14, NWS New York, NY

May 20, 1998New York County, New York

NWS New York, NY issued this severe thunderstorm warning at May 20, 1998, 6:33 PM EDT for New York County, New York. It was in force for 47 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
May 20, 1998, 6:33 PM EDT (22:33 UTC)
Expired
May 20, 1998, 7:20 PM EDT
In force
47 min
Issued by
NWS New York, NY
Area
Whole counties

County New York County, NY

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.6 hours before the alert went out and 94 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 1998-05-20Temperature 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, Brookhaven, NY at 12:00Z on 1998-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 151 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1584 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
234 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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
May 20, 4:59 PM EDTSevere Thunderstorm WarningOKXOrange, Rockland61 min
May 20, 5:17 PM EDTSevere Thunderstorm WarningOKXPutnam48 min
May 20, 5:42 PM EDTSevere Thunderstorm WarningOKXWestchester63 min
May 20, 6:33 PM EDTSevere Thunderstorm WarningOKXKings47 min
May 20, 6:42 PM EDTSevere Thunderstorm WarningOKXQueens48 min
May 20, 7:00 PM EDTSevere Thunderstorm WarningOKXNassau40 min
May 20, 7:44 PM EDTSevere Thunderstorm WarningOKXSuffolk46 min
May 20, 6:21 PM EDTSevere Thunderstorm WarningOKXGreater Bridgeport Planning Region59 min
May 20, 6:13 PM EDTSevere Thunderstorm WarningOKXBergen, Hudson47 min

Nearby

Severe Thunderstorm Warnings in New York, 1998Every severe thunderstorm warning in 1998

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.