Alert archive / New Jersey / Mesoscale Discussions in 2018
Mesoscale Discussion 729
The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2018, 10:46 PM EDT for 13 counties in New Jersey; 4 counties in New York; 4 counties in Pennsylvania. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Jun 13, 2018, 10:46 PM EDT (02:46 UTC)
- Expired
- Jun 13, 2018, 11:45 PM EDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 5%
All 21 counties
Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Kings County, NY, New York County, NY, Queens County, NY, Richmond County, NY, Bucks County, PA, Carbon County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 86 km from the middle of the area, began a volume at 02:48 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 00:00Z, 2.8 hours before the alert went out and 163 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
- 11 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 604 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Jun 13, 8:43 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 32 more | 62 min |
Nearby
Mesoscale Discussions in New Jersey, 2018Mesoscale Discussions in New York, 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.