Alert archive / New York / Mesoscale Discussions in 2019

Mesoscale Discussion 2137

October 31, 201922 counties in New York; 8 counties in Pennsylvania; Bennington County, Rutland County, Vermont

The Storm Prediction Center issued this mesoscale discussion at Oct 31, 2019, 8:21 PM EDT for 22 counties in New York; 8 counties in Pennsylvania; Bennington County, Rutland County, Vermont. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
Oct 31, 2019, 8:21 PM EDT (00:21 UTC)
Expired
Oct 31, 2019, 9:15 PM EDT
In force
54 min
Issued by
the Storm Prediction Center
All 32 counties

Albany County, NY, Broome County, NY, Chenango County, NY, Columbia County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Madison County, NY, Montgomery County, NY, Orange County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Tioga County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Bradford County, PA, Lackawanna County, PA, Lycoming County, PA, Pike County, PA, Sullivan County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA, Bennington County, VT, Rutland County, VT

The radar

The Albany radar (KENX), 63 km from the middle of the area, began a volume at 00:24 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

Albany, NY (KALY), launched 00:00Z, 0.4 hours before the alert went out and 83 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, Albany, NY at 00:00Z on 2019-11-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 00:00Z on 2019-11-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 447 square meters per square second.1939587897Sfc1 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
5 J/kg
Mixed-layer CIN
-217 J/kg
Mixed-layer LCL
692 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
447 m²/s²
0-3 km storm-relative helicity
592 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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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 31, 9:58 PM EDTMesoscale DiscussionSPCOrange, Putnam, Richmond, Rockland, Westchester2 hr
Oct 31, 11:16 PM EDTMesoscale DiscussionSPCAlbany, Columbia, Dutchess, Fulton, Greene, Montgomery and 10 more119 min
Nov 1, 12:50 AM EDTMesoscale DiscussionSPCBronx, Columbia, Dutchess, Kings, Nassau, New York and 6 more85 min

Nearby

Mesoscale Discussions in New York, 2019Mesoscale Discussions in Pennsylvania, 2019Mesoscale Discussions in Vermont, 2019Every 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.