Alert archive / New York / Mesoscale Discussions in 2018
Mesoscale Discussion 1244
The Storm Prediction Center issued this mesoscale discussion at Aug 6, 2018, 3:12 PM EDT for 18 counties in New York; 6 counties in Ohio; Crawford County, Erie County, Pennsylvania. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 6, 2018, 3:12 PM EDT (19:12 UTC)
- Expired
- Aug 6, 2018, 5:45 PM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 5%
All 26 counties
Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Jefferson County, NY, Lewis County, NY, Livingston County, NY, Monroe County, NY, Onondaga County, NY, Ontario County, NY, Orleans County, NY, Oswego County, NY, Seneca County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Ashtabula County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Lake County, OH, Lorain County, OH, Crawford County, PA, Erie County, PA
The radar
The Buffalo radar (KBUF), 108 km from the middle of the area, began a volume at 19:11 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.2 hours before the alert went out and 108 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
- 570 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 1257 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 1:26 PM EDT | Mesoscale Discussion | SPC | Defiance, Fulton, Henry, Lucas, Ottawa, Paulding and 2 more | 3 hr |
| Aug 6, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | Fulton, Williams | 5 hr |
| Aug 6, 4:44 PM EDT | Mesoscale Discussion | SPC | Allen, Crawford, Defiance, Erie, Fulton, Hancock and 13 more | 61 min |
Nearby
Mesoscale Discussions in New York, 2018Mesoscale Discussions in Ohio, 2018Mesoscale Discussions in Pennsylvania, 2018Every mesoscale discussion in 2018
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.