Alert archive / New York / Mesoscale Discussions in 2019

Mesoscale Discussion 2003

September 23, 201934 counties in New York; 5 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Sep 23, 2019, 3:23 PM EDT for 34 counties in New York; 5 counties in Pennsylvania. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Sep 23, 2019, 3:23 PM EDT (19:23 UTC)
Expired: Sep 23, 2019, 5:00 PM EDT
In force: 97 min
Issued by: the Storm Prediction Center
Chance of a watch: 5%

All 39 counties

Allegany County, NY, Broome County, NY, Cattaraugus County, NY, Cayuga County, NY, Chemung County, NY, Chenango County, NY, Clinton County, NY, Cortland County, NY, Delaware County, NY, Essex County, NY, Franklin County, NY, Fulton County, NY, Hamilton County, NY, Herkimer County, NY, Jefferson County, NY, Lewis County, NY, Livingston County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Oswego County, NY, Otsego County, NY, Saratoga County, NY, Schoharie County, NY, Schuyler County, NY, Seneca County, NY, St. Lawrence County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Warren County, NY, Yates County, NY, Bradford County, PA, McKean County, PA, Potter County, PA, Susquehanna County, PA, Tioga County, PA

The radar

The Binghamton radar (KBGM), 103 km from the middle of the area, began a volume at 19:25 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 12:00Z, 7.4 hours before the alert went out and 165 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: 1060 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 199 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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Nearby

Mesoscale Discussions in New York, 2019 Mesoscale Discussions in Pennsylvania, 2019 Every mesoscale discussion in 2019

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.