Alert archive / New Jersey / Mesoscale Discussions in 2011
Mesoscale Discussion 1922
The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2011, 7:07 PM EDT for 5 states. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2011, 7:07 PM EDT (23:07 UTC)
- Expired
- Aug 9, 2011, 8:30 PM EDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 42 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Dorchester County, MD, Wicomico County, MD, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Morris County, NJ, Passaic County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Albany County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Montgomery County, NY, Orange County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Ulster County, NY, Warren County, NY, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lackawanna County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA, Pike County, PA, Wayne County, PA
The radar
The Philadelphia radar (KDIX), 137 km from the middle of the area, began a volume at 23:09 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
Brookhaven, NY (KOKX), launched 12:00Z, 11.1 hours before the alert went out and 187 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
- 171 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 860 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 |
|---|---|---|---|---|
| Aug 9, 12:48 PM EDT | Mesoscale Discussion | SPC | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more | 57 min |
| Aug 9, 3:05 PM EDT | Mesoscale Discussion | SPC | Bergen, Burlington, Camden, Essex, Gloucester, Hudson and 10 more | 55 min |
| Aug 9, 4:16 PM EDT | Severe Thunderstorm Watch | SPC | Bergen, Burlington, Camden, Essex, Gloucester, Hudson and 8 more | 5 hr |
| Aug 9, 6:56 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie, Lawrence, Mercer | 5 hr |
Nearby
Mesoscale Discussions in New Jersey, 2011Mesoscale Discussions in New York, 2011Mesoscale Discussions in Pennsylvania, 2011Every mesoscale discussion in 2011
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.