Alert archive / New York / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 91, NWS New York, NY

August 13, 1994Nassau County, New York

NWS New York, NY issued this severe thunderstorm warning at Aug 13, 1994, 7:08 PM EDT for Nassau County, New York. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Aug 13, 1994, 7:08 PM EDT (23:08 UTC)
Expired
Aug 13, 1994, 8:00 PM EDT
In force
52 min
Issued by
NWS New York, NY
Area
Whole counties

County Nassau County, NY

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 11.1 hours before the alert went out and 162 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, Atlantic City In, NJ at 12:00Z on 1994-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1816 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, Atlantic City In, NJ at 12:00Z on 1994-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 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
1816 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
906 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
121 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
Aug 13, 1:51 PM EDTSevere Thunderstorm WarningOKXPassaic, Sussex34 min
Aug 13, 5:18 PM EDTSevere Thunderstorm WarningOKXKings42 min
Aug 13, 5:18 PM EDTSevere Thunderstorm WarningOKXRichmond42 min
Aug 13, 5:32 PM EDTSevere Thunderstorm WarningOKXNassau, Queens43 min

Nearby

Severe Thunderstorm Warnings in New York, 1994Every severe thunderstorm warning in 1994

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.