Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 171, NWS Binghamton, NY

August 20, 2009Steuben County, New York

NWS Binghamton, NY issued this severe thunderstorm warning at Aug 20, 2009, 10:31 PM EDT for Steuben County, New York. It was in force for 59 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: Aug 20, 2009, 10:31 PM EDT (02:31 UTC)
Expired: Aug 20, 2009, 11:30 PM EDT
In force: 59 min
Issued by: NWS Binghamton, NY
Area: Storm-based polygon

County Steuben County, NY

The radar

The Binghamton radar (KBGM), 115 km from the middle of the area, began a volume at 02:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.5 hours before the alert went out and 130 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: 828 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1273 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 232 m²/s²
0-3 km storm-relative helicity: 306 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.5

Open this sounding in Storm Lab

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.

NWS Binghamton, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 7:24 PM EDT, 3 hours 7 minutes earlier.

Area forecast discussion, Aug 20, 7:24 PM EDT, 3 hours 7 minutes before

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Hazardous weather outlook, Aug 20, 3:19 PM EDT, 7 hours 12 minutes before

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In the hours before

Special weather statement, Aug 20, 10:26 PM EDT, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 11:39 AM EDT	Severe Thunderstorm Warning	BGM	Sullivan	53 min
Aug 21, 12:18 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	42 min
Aug 21, 12:28 PM EDT	Tornado Warning	BGM	Sullivan	62 min
Aug 21, 12:49 PM EDT	Tornado Warning	BGM	Sullivan	41 min
Aug 21, 1:17 PM EDT	Areal Flood Advisory	BGM	Sullivan	3 hr
Aug 21, 1:26 PM EDT	Tornado Warning	BGM	Sullivan	34 min
Aug 21, 1:48 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	57 min
Aug 21, 2:01 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	44 min
Aug 21, 10:32 AM EDT	Tornado Warning	BGM	Lackawanna, Pike, Wayne	28 min

Nearby

Severe Thunderstorm Warnings in New York, 2009 Every severe thunderstorm warning in 2009

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; radar from the NEXRAD Level II archive.