Alert archive / North Carolina / Mesoscale Discussions in 2018
Mesoscale Discussion 1455
The Storm Prediction Center issued this mesoscale discussion at Sep 15, 2018, 2:59 AM EDT for 18 counties in North Carolina. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Sep 15, 2018, 2:59 AM EDT (06:59 UTC)
- Expired
- Sep 15, 2018, 4:30 AM EDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
Counties Bladen County, NC, Brunswick County, NC, Carteret County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Greene County, NC, Harnett County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, New Hanover County, NC, Onslow County, NC, Pamlico County, NC, Pender County, NC, Sampson County, NC, Wayne County, NC
The radar
The Morehead City radar (KMHX), 92 km from the middle of the area, began a volume at 07:03 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
Newport, NC (KMHX), launched 00:00Z, 7.0 hours before the alert went out and 92 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
- 522 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 546 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Sep 14, 8:01 PM EDT | Mesoscale Discussion | SPC | Beaufort, Carteret, Craven, Cumberland, Dare, Duplin and 18 more | 119 min |
| Sep 14, 10:25 PM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Carteret, Columbus, Craven, Cumberland and 11 more | 95 min |
| Sep 14, 11:03 PM EDT | Tornado Watch | SPC | Bladen, Brunswick, Carteret, Columbus, Craven, Cumberland and 12 more | 8 hr |
| Sep 15, 6:15 AM EDT | Mesoscale Discussion | SPC | Beaufort, Bladen, Brunswick, Carteret, Columbus, Craven and 16 more | 90 min |
| Sep 15, 6:59 AM EDT | Tornado Watch | SPC | Bladen, Brunswick, Columbus, Cumberland, Duplin, Greene and 14 more | 10 hr |
| Sep 15, 12:01 PM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 9 more | 119 min |
| Sep 15, 3:26 PM EDT | Mesoscale Discussion | SPC | Pender | 64 min |
| Sep 15, 4:38 PM EDT | Tornado Watch | SPC | Bladen, Brunswick, Columbus, Cumberland, Hoke, New Hanover and 4 more | 6 hr |
Nearby
Mesoscale Discussions in North Carolina, 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.