Alert archive / North Carolina / Mesoscale Discussions in 2006

Mesoscale Discussion 879

May 15, 200635 counties in North Carolina; 8 counties in Virginia

The Storm Prediction Center issued this mesoscale discussion at May 15, 2006, 1:44 PM EDT for 35 counties in North Carolina; 8 counties in Virginia. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: May 15, 2006, 1:44 PM EDT (17:44 UTC)
Expired: May 15, 2006, 3:15 PM EDT
In force: 91 min
Issued by: the Storm Prediction Center

All 43 counties

Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chowan 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, City of Chesapeake, VA, City of Emporia, VA, City of Franklin, VA, City of Portsmouth, VA, City of Suffolk, VA, Greensville County, VA, Isle of Wight County, VA, Southampton County, VA

The radar

The Morehead City radar (KMHX), 75 km from the middle of the area, began a volume at 17:45 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.

Severe Thunderstorm Watch 359May 15, 2:35 PM EDT

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 5.7 hours before the alert went out and 74 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 121 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 888 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 14, 8:07 PM EDT	Mesoscale Discussion	SPC	Bertie, Chatham, Edgecombe, Greene, Harnett, Johnston and 7 more	83 min
May 14, 9:34 PM EDT	Mesoscale Discussion	SPC	Beaufort, Bladen, Brunswick, Columbus, Craven, Duplin and 15 more	56 min
May 15, 2:36 PM EDT	Severe Thunderstorm Watch	SPC	Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 25 more	6 hr
May 15, 7:18 PM EDT	Mesoscale Discussion	SPC	Beaufort, Bladen, Brunswick, Carteret, Columbus, Craven and 16 more	87 min

Nearby

Mesoscale Discussions in North Carolina, 2006 Mesoscale Discussions in Virginia, 2006 Every mesoscale discussion in 2006

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.