Alert archive / North Carolina / Mesoscale Discussions in 2022

Mesoscale Discussion 377

March 31, 202218 counties in North Carolina; Chesterfield County, Marlboro County, South Carolina

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2022, 2:11 PM EDT for 18 counties in North Carolina; Chesterfield County, Marlboro County, South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Mar 31, 2022, 2:11 PM EDT (18:11 UTC)
Expired
Mar 31, 2022, 4:15 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Tornado watch 86

Counties Anson County, NC, Chatham County, NC, Cumberland County, NC, Durham County, NC, Franklin County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Richmond County, NC, Scotland County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Chesterfield County, SC, Marlboro County, SC

The radar

The Raleigh/Durham radar (KRAX), 80 km from the middle of the area, began a volume at 18:09 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.2 hours before the alert went out and 99 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2022-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2022-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 278 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
278 m²/s²
0-3 km storm-relative helicity
342 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.

IssuedProductOfficeCountiesLasted
Mar 31, 2:29 AM EDTMesoscale DiscussionSPCCherokee2 hr
Mar 31, 11:43 AM EDTMesoscale DiscussionSPCAlamance, Anson, Cabarrus, Chatham, Davidson, Gaston and 11 more92 min
Mar 31, 12:50 PM EDTTornado WatchSPCAnson, Bladen, Columbus, Cumberland, Harnett, Hoke and 9 more5 hr
Mar 31, 2:25 PM EDTTornado WatchSPCAlamance, Beaufort, Bertie, Carteret, Chatham, Craven and 29 more8 hr
Mar 31, 6:19 PM EDTMesoscale DiscussionSPCBertie, Chowan, Duplin, Edgecombe, Franklin, Gates and 15 more116 min
Mar 31, 7:58 PM EDTMesoscale DiscussionSPCBeaufort, Carteret, Craven, Dare, Hyde, Pamlico2 hr

Nearby

Mesoscale Discussions in North Carolina, 2022Mesoscale Discussions in South Carolina, 2022Every 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.