Alert archive / New York / Mesoscale Discussions in 2004
Mesoscale Discussion 368
The Storm Prediction Center issued this mesoscale discussion at Apr 18, 2004, 2:17 PM EDT for 27 counties in New York; Susquehanna County, Wayne County, Pennsylvania. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2004, 2:17 PM EDT (18:17 UTC)
- Expired
- Apr 18, 2004, 4:15 PM EDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 29 counties
Albany County, NY, Broome County, NY, Cayuga County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Dutchess County, NY, Greene County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Orange County, NY, Oswego County, NY, Otsego County, NY, Putnam County, NY, Rockland County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Seneca County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Westchester County, NY, Susquehanna County, PA, Wayne County, PA
The radar
The Albany radar (KENX), 74 km from the middle of the area, began a volume at 18:17 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, 6.3 hours before the alert went out and 96 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 539 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 3:25 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr | |
| Apr 18, 4:55 PM EDT | Mesoscale Discussion | SPC | 65 min | |
| Apr 18, 10:29 AM EDT | Mesoscale Discussion | SPC | Cayuga, Cortland, Erie, Genesee, Livingston, Madison and 10 more | 3 hr |
| Apr 18, 11:45 AM EDT | Severe Thunderstorm Watch | SPC | Cayuga, Chenango, Cortland, Delaware, Livingston, Madison and 11 more | 5 hr |
Nearby
Mesoscale Discussions in New York, 2004Mesoscale Discussions in Connecticut, 2004Mesoscale Discussions in Pennsylvania, 2004Every mesoscale discussion in 2004
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.