Alert archive / New Jersey / Mesoscale Discussions in 2013
Mesoscale Discussion 2003
The Storm Prediction Center issued this mesoscale discussion at Nov 1, 2013, 8:34 AM EDT for 9 counties in New Jersey; 6 counties in Pennsylvania. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Nov 1, 2013, 8:34 AM EDT (12:34 UTC)
- Expired
- Nov 1, 2013, 10:00 AM EDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
Counties Essex County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Union County, NJ, Warren County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 12:35 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 nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 0.6 hours before the alert went out and 159 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
- 2 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 731 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 442 m²/s²
- 0-3 km storm-relative helicity
- 505 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Nov 1, 5:41 AM EDT | Mesoscale Discussion | SPC | Hunterdon, Morris, Somerset, Sussex, Warren | 94 min |
| Nov 1, 6:25 AM EDT | Severe Thunderstorm Watch | SPC | Atlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 9 more | 5 hr |
| Nov 1, 10:39 AM EDT | Mesoscale Discussion | SPC | Atlantic, Ocean | 96 min |
| Oct 31, 10:09 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 6 hr |
| Nov 1, 12:39 AM EDT | Mesoscale Discussion | SPC | Crawford | 96 min |
| Nov 1, 12:46 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 9 more | 5 hr |
| Nov 1, 3:37 AM EDT | Mesoscale Discussion | SPC | Adams, Armstrong, Bedford, Blair, Cambria, Cameron and 30 more | 83 min |
| Nov 1, 4:17 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cambria, Cameron, Centre and 26 more | 4 hr |
Nearby
Mesoscale Discussions in New Jersey, 2013Mesoscale Discussions in Pennsylvania, 2013Every mesoscale discussion in 2013
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.