Alert archive / New Jersey / Mesoscale Discussions in 2011
Mesoscale Discussion 2069
The Storm Prediction Center issued this mesoscale discussion at Aug 27, 2011, 7:31 PM EDT for 5 states. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Aug 27, 2011, 7:31 PM EDT (23:31 UTC)
- Expired
- Aug 27, 2011, 9:00 PM EDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 35 counties
New Castle County, DE, Atlantic County, NJ, Bergen County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Essex County, NJ, Gloucester County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Passaic County, NJ, Salem County, NJ, Somerset County, NJ, Union County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Suffolk County, NY, Westchester County, NY, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA, Washington County, RI
The radar
The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 23:35 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
Brookhaven, NY (KOKX), launched 12:00Z, 11.5 hours before the alert went out and 101 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
- 1126 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 471 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
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 27, 7:56 PM EDT | Tornado Watch | SPC | Greater Bridgeport Planning Region | 9 hr |
| Aug 27, 7:52 AM EDT | Mesoscale Discussion | SPC | Sussex | 113 min |
| Aug 27, 10:31 AM EDT | Mesoscale Discussion | SPC | Sussex | 29 min |
| Aug 27, 10:41 AM EDT | Tornado Watch | SPC | Kent, New Castle, Sussex | 9 hr |
| Aug 27, 1:01 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 119 min |
| Aug 27, 4:44 PM EDT | Mesoscale Discussion | SPC | Sussex | 2 hr |
Nearby
Mesoscale Discussions in New Jersey, 2011Mesoscale Discussions in New York, 2011Mesoscale Discussions in Connecticut, 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.