Alert archive / North Carolina / Mesoscale Discussions in 2022

Mesoscale Discussion 29

January 3, 20227 counties in North Carolina

The Storm Prediction Center issued this mesoscale discussion at Jan 3, 2022, 7:47 AM EST for 7 counties in North Carolina. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued: Jan 3, 2022, 7:47 AM EST (12:47 UTC)
Expired: Jan 3, 2022, 9:45 AM EST
In force: 118 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 12

Counties Carteret County, NC, Craven County, NC, Dare County, NC, Hyde County, NC, Jones County, NC, Onslow County, NC, Pamlico County, NC

The radar

The Morehead City radar (KMHX), 42 km from the middle of the area, began a volume at 12:47 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 12:00Z, 0.8 hours before the alert went out and 41 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: 1539 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 603 m above ground
0-6 km bulk shear: 93 kt
0-1 km storm-relative helicity: 547 m²/s²
0-3 km storm-relative helicity: 673 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 17.5

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 2, 7:19 PM EST	Mesoscale Discussion	SPC	Cherokee, Graham, Haywood, Madison, Swain	5 hr
Jan 3, 4:25 AM EST	Mesoscale Discussion	SPC	Bladen, Brunswick, Carteret, Columbus, Craven, Duplin and 9 more	3 hr
Jan 3, 5:13 AM EST	Mesoscale Discussion	SPC	Alleghany, Ashe, Surry, Watauga	4 hr
Jan 3, 5:41 AM EST	Tornado Watch	SPC	Beaufort, Bladen, Brunswick, Carteret, Columbus, Craven and 9 more	5 hr

Nearby

Mesoscale Discussions in North Carolina, 2022 Every mesoscale discussion in 2022

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.