Alert archive / New York / Mesoscale Discussions in 2019

Mesoscale Discussion 63

January 31, 2019Jefferson County, Lewis County, New York

The Storm Prediction Center issued this mesoscale discussion at Jan 31, 2019, 10:53 AM EST for Jefferson County, Lewis County, New York. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jan 31, 2019, 10:53 AM EST (15:53 UTC)
Expired
Jan 31, 2019, 5:00 PM EST
In force
6 hr
Issued by
the Storm Prediction Center

Counties Jefferson County, NY, Lewis County, NY

The radar

The Ft Drum radar (KTYX), 29 km from the middle of the area, began a volume at 15:55 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 12:00Z, 3.9 hours before the alert went out and 218 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 12:00Z on 2019-01-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Albany, NY at 12:00Z on 2019-01-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1540 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
86 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
Jan 31, 3:51 AM ESTMesoscale DiscussionSPCOswego6 hr
Jan 31, 6:39 PM ESTMesoscale DiscussionSPCJefferson, Lewis, Oswego5 hr

Nearby

Mesoscale Discussions in New York, 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.