Alert archive / Virginia / Mesoscale Discussions in 2013
Mesoscale Discussion 110
The Storm Prediction Center issued this mesoscale discussion at Jan 31, 2013, 12:52 AM EST for Saint Mary's County, Somerset County, Worcester County, Maryland; 35 counties in North Carolina; 39 counties in Virginia. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Jan 31, 2013, 12:52 AM EST (05:52 UTC)
- Expired
- Jan 31, 2013, 2:15 AM EST
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 77 counties
Saint Mary's County, MD, Somerset County, MD, Worcester County, MD, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Edgecombe County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Hertford County, NC, Hyde 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, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Sampson County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Accomack County, VA, Charles City County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Hopewell, VA, City of Newport News, VA, City of Norfolk, VA, City of Petersburg, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Richmond, VA, City of Suffolk, VA, City of Virginia Beach, VA, City of Williamsburg, VA, Dinwiddie County, VA, Essex County, VA, Gloucester County, VA, Greensville County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Mathews County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA, York County, VA
The radar
The Norfolk radar (KAKQ), 104 km from the middle of the area, began a volume at 05:51 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, 5.9 hours before the alert went out and 146 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
- 20 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 649 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 364 m²/s²
- 0-3 km storm-relative helicity
- 383 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 |
|---|---|---|---|---|
| Jan 30, 9:06 PM EST | Mesoscale Discussion | SPC | Caroline, Cecil, Dorchester, Queen Anne's, Somerset, Wicomico and 1 more | 54 min |
| Jan 30, 9:38 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 7 more | 67 min |
| Jan 30, 11:59 PM EST | Tornado Watch | SPC | Dorchester, Somerset, Wicomico, Worcester | 5 hr |
| Jan 31, 1:48 AM EST | Mesoscale Discussion | SPC | Caroline, Kent, Queen Anne's | 57 min |
| Jan 30, 7:09 PM EST | Mesoscale Discussion | SPC | Alleghany, Caswell, Forsyth, Guilford, Rockingham, Stokes and 3 more | 66 min |
| Jan 30, 7:56 PM EST | Mesoscale Discussion | SPC | Alamance, Anson, Cabarrus, Chatham, Cumberland, Davidson and 28 more | 94 min |
| Jan 30, 8:21 PM EST | Tornado Watch | SPC | Alamance, Anson, Bladen, Brunswick, Caswell, Chatham and 35 more | 6 hr |
| Jan 30, 10:42 PM EST | Mesoscale Discussion | SPC | Bertie, Bladen, Chatham, Chowan, Columbus, Cumberland and 29 more | 93 min |
| Jan 31, 3:40 AM EST | Mesoscale Discussion | SPC | Dare, Hyde | 65 min |
Nearby
Mesoscale Discussions in Virginia, 2013Mesoscale Discussions in North Carolina, 2013Mesoscale Discussions in Maryland, 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.