Alert archive / New York / Mesoscale Discussions in 2016

Mesoscale Discussion 1543

August 16, 201614 counties in New York

The Storm Prediction Center issued this mesoscale discussion at Aug 16, 2016, 3:57 PM EDT for 14 counties in New York. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: Aug 16, 2016, 3:57 PM EDT (19:57 UTC)
Expired: Aug 16, 2016, 5:30 PM EDT
In force: 93 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Cayuga County, NY, Fulton County, NY, Herkimer County, NY, Livingston County, NY, Madison County, NY, Monroe County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Oswego County, NY, Otsego County, NY, Seneca County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 78 km from the middle of the area, began a volume at 20:00 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 448Aug 16, 5:15 PM EDT

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.0 hours before the alert went out and 197 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: 1098 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 174 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.

Issued	Product	Office	Counties	Lasted
Aug 16, 5:15 PM EDT	Severe Thunderstorm Watch	SPC	Albany, Cayuga, Fulton, Hamilton, Herkimer, Jefferson and 14 more	5 hr
Aug 16, 5:54 PM EDT	Mesoscale Discussion	SPC	Albany, Cayuga, Fulton, Hamilton, Herkimer, Jefferson and 13 more	2 hr

Nearby

Mesoscale Discussions in New York, 2016 Every mesoscale discussion in 2016

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.