Alert archive / New York / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 7, NWS New York, NY

May 30, 1991Rockland County, New York

NWS New York, NY issued this severe thunderstorm warning at May 30, 1991, 5:27 PM EDT for Rockland County, New York. It was in force for 63 min.

The area

The counties it named.

The facts

Issued: May 30, 1991, 5:27 PM EDT (21:27 UTC)
Expired: May 30, 1991, 6:30 PM EDT
In force: 63 min
Issued by: NWS New York, NY
Area: Whole counties

County Rockland County, NY

The nearest sounding before it

Albany, NY (KALB), launched 12:00Z, 9.5 hours before the alert went out and 172 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 755 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 12 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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 30, 1:36 PM EDT, 3 hours 51 minutes before

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Special weather statement, May 30, 1:46 PM EDT, 3 hours 41 minutes before

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Special weather statement, May 30, 2:37 PM EDT, 2 hours 50 minutes before

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Special weather statement, May 30, 3:46 PM EDT, 1 hour 41 minutes before

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Special weather statement, May 30, 4:35 PM EDT, 52 minutes before

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Special weather statement, May 30, 5:14 PM EDT, 13 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 5:48 PM EDT	Severe Thunderstorm Warning	OKX	Westchester	57 min
May 30, 6:32 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Queens	58 min
May 30, 7:14 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	61 min
May 30, 6:10 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region	65 min

Nearby

Severe Thunderstorm Warnings in New York, 1991 Every severe thunderstorm warning in 1991

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.