Alert archive / North Carolina / Mesoscale Discussions in 2019
Mesoscale Discussion 402
The Storm Prediction Center issued this mesoscale discussion at Apr 19, 2019, 12:29 PM EDT for 33 counties in North Carolina; 4 counties in South Carolina; 25 counties in Virginia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2019, 12:29 PM EDT (16:29 UTC)
- Expired
- Apr 19, 2019, 2:30 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 62 counties
Bertie County, NC, Bladen County, NC, Brunswick County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Pender County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC, Dillon County, SC, Florence County, SC, Horry County, SC, Marion County, SC, Brunswick County, VA, Caroline County, VA, Charles City County, VA, Chesterfield County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Hopewell, VA, City of Petersburg, VA, City of Richmond, VA, City of Suffolk, VA, City of Williamsburg, VA, Dinwiddie County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King William County, VA, New Kent County, VA, Prince George County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA
The radar
The Raleigh/Durham radar (KRAX), 56 km from the middle of the area, began a volume at 16:30 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
Newport, NC (KMHX), launched 12:00Z, 4.5 hours before the alert went out and 138 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
- 50 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 704 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 264 m²/s²
- 0-3 km storm-relative helicity
- 258 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 |
|---|---|---|---|---|
| Apr 19, 10:06 AM EDT | Mesoscale Discussion | SPC | Alexander, Burke, Cabarrus, Caldwell, Caswell, Catawba and 19 more | 84 min |
| Apr 19, 10:31 AM EDT | Tornado Watch | SPC | Alamance, Alexander, Alleghany, Anson, Ashe, Avery and 40 more | 9 hr |
| Apr 19, 10:54 AM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, Cumberland, Duplin, Greene and 9 more | 96 min |
| Apr 19, 1:17 PM EDT | Tornado Watch | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 35 more | 11 hr |
| Apr 19, 1:40 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Anson, Burke, Cabarrus and 23 more | 2 hr |
| Apr 19, 3:18 PM EDT | Mesoscale Discussion | SPC | Bertie, Bladen, Brunswick, Chatham, Columbus, Cumberland and 33 more | 87 min |
| Apr 19, 4:35 PM EDT | Mesoscale Discussion | SPC | Alamance, Caswell, Chatham, Cumberland, Durham, Edgecombe and 17 more | 55 min |
| Apr 19, 6:21 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Chowan, Craven, Gates, Halifax and 7 more | 84 min |
| Apr 19, 10:44 AM EDT | Tornado Watch | SPC | Aiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 20 more | 5 hr |
| Apr 19, 1:19 PM EDT | Mesoscale Discussion | SPC | Abbeville, Aiken, Allendale, Bamberg, Barnwell, Beaufort and 20 more | 86 min |
| Apr 19, 12:08 PM EDT | Mesoscale Discussion | SPC | Albemarle, Amelia, Arlington, Augusta, Buckingham, Clarke and 33 more | 2 hr |
| Apr 19, 12:48 PM EDT | Tornado Watch | SPC | Albemarle, Arlington, Augusta, Clarke, Culpeper, Fairfax and 28 more | 9 hr |
| Apr 19, 4:32 PM EDT | Mesoscale Discussion | SPC | Albemarle, Arlington, Augusta, Caroline, Clarke, Culpeper and 35 more | 58 min |
Nearby
Mesoscale Discussions in North Carolina, 2019Mesoscale Discussions in Virginia, 2019Mesoscale Discussions in South Carolina, 2019Every mesoscale discussion in 2019
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.