Alert archive / New Jersey / Mesoscale Discussions in 2015
Mesoscale Discussion 1092
The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2015, 8:37 PM EDT for 5 states. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2015, 8:37 PM EDT (00:37 UTC)
- Expired
- Jun 20, 2015, 9:30 PM EDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 29 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Dorchester County, MD, Somerset County, MD, Wicomico County, MD, Worcester County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA, Accomack County, VA, Northumberland County, VA
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 00:40 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.6 hours before the alert went out and 161 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
- 261 J/kg
- Mixed-layer CIN
- -134 J/kg
- Mixed-layer LCL
- 1179 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 |
|---|---|---|---|---|
| Jun 20, 8:56 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 4 hr |
| Jun 20, 10:14 PM EDT | Mesoscale Discussion | SPC | Kent, Sussex | 61 min |
| Jun 21, 2:52 PM EDT | Mesoscale Discussion | SPC | Buchanan, Dickenson, Lee, Russell, Tazewell, Wise and 1 more | 113 min |
| Jun 21, 3:23 PM EDT | Severe Thunderstorm Watch | SPC | Alleghany, Bath, Bedford, Bland, Botetourt, Buchanan and 36 more | 5 hr |
Nearby
Mesoscale Discussions in New Jersey, 2015Mesoscale Discussions in Maryland, 2015Mesoscale Discussions in Pennsylvania, 2015Every mesoscale discussion in 2015
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.