Alert archive / North Carolina / Mesoscale Discussions in 2018
Mesoscale Discussion 1464
The Storm Prediction Center issued this mesoscale discussion at Sep 16, 2018, 11:22 AM EDT for 7 counties in North Carolina; 5 counties in South Carolina. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- Sep 16, 2018, 11:22 AM EDT (15:22 UTC)
- Expired
- Sep 16, 2018, 1:15 PM EDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
Counties Bladen County, NC, Brunswick County, NC, Columbus County, NC, Hoke County, NC, Richmond County, NC, Robeson County, NC, Scotland County, NC, Dillon County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC
The radar
The Wilmington radar (KLTX), 77 km from the middle of the area, began a volume at 15:25 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
Charleston AFB, SC (KCHS), launched 12:00Z, 3.4 hours before the alert went out and 171 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
- 61 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 162 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 15, 9:14 PM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, Cumberland, Hoke, New Hanover and 4 more | 2 hr |
| Sep 15, 11:01 PM EDT | Tornado Watch | SPC | Bladen, Brunswick, Columbus, Cumberland, Hoke, New Hanover and 4 more | 8 hr |
| Sep 15, 11:59 PM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, New Hanover, Pender, Robeson | 3 hr |
| Sep 16, 3:23 AM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, Cumberland, Duplin, Hoke and 6 more | 2 hr |
| Sep 16, 6:32 AM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, Cumberland, Duplin, Hoke and 6 more | 88 min |
| Sep 16, 6:55 AM EDT | Tornado Watch | SPC | Anson, Bladen, Brunswick, Columbus, Cumberland, Hoke and 6 more | 16 hr |
| Sep 16, 3:42 PM EDT | Mesoscale Discussion | SPC | Anson, Hoke, Richmond, Robeson, Scotland | 93 min |
| Sep 16, 4:14 PM EDT | Tornado Watch | SPC | Anson, Cumberland, Harnett, Hoke, Lee, Montgomery and 4 more | 7 hr |
Nearby
Mesoscale Discussions in North Carolina, 2018Mesoscale Discussions in South 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.