Alert archive / New York / Mesoscale Discussions in 2003

Mesoscale Discussion 2162

August 16, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Aug 16, 2003, 12:51 PM EDT for 4 states. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Aug 16, 2003, 12:51 PM EDT (16:51 UTC)
Expired
Aug 16, 2003, 2:45 PM EDT
In force
114 min
Issued by
the Storm Prediction Center
All 58 counties

Berkshire County, MA, Albany County, NY, Allegany County, NY, Broome County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Livingston County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Yates County, NY, Bradford County, PA, Cameron County, PA, Clarion County, PA, Clinton County, PA, Elk County, PA, Forest County, PA, Jefferson County, PA, Lycoming County, PA, McKean County, PA, Potter County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Wayne County, PA, Wyoming County, PA, Addison County, VT, Bennington County, VT, Rutland County, VT, Windham County, VT, Windsor County, VT

The radar

The Binghamton radar (KBGM), 51 km from the middle of the area, began a volume at 16:51 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.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 4.9 hours before the alert went out and 196 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 2003-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1111 joules per kilogram.LCLLFCEL10008507005003002001001 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 2003-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.193958Sfc1 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
1111 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 16, 1:25 PM EDTSevere Thunderstorm WatchSPCBerkshire, Hampshire6 hr
Aug 16, 6:26 PM EDTMesoscale DiscussionSPCBerkshire, Franklin, Hampden, Hampshire64 min
Aug 16, 2:00 PM EDTSevere Thunderstorm WatchSPCAllegheny, Beaver, Crawford, Greene, Lawrence, Mercer and 1 more6 hr
Aug 16, 6:53 PM EDTMesoscale DiscussionSPCGreene, Washington97 min

Nearby

Mesoscale Discussions in New York, 2003Mesoscale Discussions in Pennsylvania, 2003Mesoscale Discussions in Vermont, 2003Every mesoscale discussion in 2003

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.