Alert archive / North Carolina / Mesoscale Discussions in 2022

Mesoscale Discussion 1850

September 30, 202213 counties in North Carolina

The Storm Prediction Center issued this mesoscale discussion at Sep 30, 2022, 3:13 PM EDT for 13 counties in North Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Sep 30, 2022, 3:13 PM EDT (19:13 UTC)
Expired: Sep 30, 2022, 5:15 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Tornado watch 548

Counties Beaufort County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Craven County, NC, Currituck County, NC, Dare County, NC, Hyde County, NC, Pamlico County, NC, Pasquotank County, NC, Perquimans County, NC, Tyrrell County, NC, Washington County, NC

The radar

The Morehead City radar (KMHX), 103 km from the middle of the area, began a volume at 19:13 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, 7.2 hours before the alert went out and 103 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 516 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 601 m²/s²
0-3 km storm-relative helicity: 915 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Sep 30, 9:47 AM EDT	Mesoscale Discussion	SPC	Beaufort, Brunswick, Carteret, Chowan, Columbus, Craven and 15 more	118 min
Sep 30, 12:27 PM EDT	Mesoscale Discussion	SPC	Beaufort, Bertie, Brunswick, Camden, Carteret, Chowan and 16 more	63 min
Sep 30, 12:39 PM EDT	Tornado Watch	SPC	Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 32 more	9 hr
Sep 30, 6:15 PM EDT	Mesoscale Discussion	SPC	Beaufort, Bertie, Camden, Chowan, Craven, Currituck and 19 more	60 min

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.