Alert archive / New York / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 7, NWS Buffalo, NY

May 30, 1987Allegany County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 30, 1987, 6:30 PM EDT for Allegany County, New York. It was in force for 75 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 30, 1987, 6:30 PM EDT (22:30 UTC)
Expired
May 30, 1987, 7:45 PM EDT
In force
75 min
Issued by
NWS Buffalo, NY
Area
Whole counties

County Allegany County, NY

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
May 30, 6:35 PM EDTHail 1Allegany, NY

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.5 hours before the alert went out and 269 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, Pittsburgh, PA at 12:00Z on 1987-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1755 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, Pittsburgh, PA at 12:00Z on 1987-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
1755 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
1131 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
-18 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 Buffalo, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 2:35 PM EDTSevere Thunderstorm WarningBUFNiagara85 min
May 30, 4:30 PM EDTSevere Thunderstorm WarningBUFNiagara, Orleans60 min
May 30, 4:40 PM EDTSevere Thunderstorm WarningBUFAllegany80 min
May 30, 5:20 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus60 min

Nearby

Severe Thunderstorm Warnings in New York, 1987Every severe thunderstorm warning in 1987

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.