Alert archive / North Carolina / Mesoscale Discussions in 2022

Mesoscale Discussion 677

May 6, 20227 states

The Storm Prediction Center issued this mesoscale discussion at May 6, 2022, 4:03 PM EDT for 7 states. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued
May 6, 2022, 4:03 PM EDT (20:03 UTC)
Expired
May 6, 2022, 5:00 PM EDT
In force
57 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 186
All 110 counties

Fannin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Towns County, GA, Union County, GA, White County, GA, Bell County, KY, Breathitt County, KY, Clay County, KY, Floyd County, KY, Harlan County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Leslie County, KY, Letcher County, KY, McCreary County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Wayne County, KY, Whitley County, KY, Alexander County, NC, Alleghany County, NC, Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Cherokee County, NC, Clay County, NC, Cleveland County, NC, Gaston County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC, Anderson County, SC, Cherokee County, SC, Greenville County, SC, Laurens County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Union County, SC, York County, SC, Anderson County, TN, Blount County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Cocke County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Pickett County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Washington County, TN, Buchanan County, VA, City of Bristol, VA, City of Galax, VA, City of Norton, VA, Dickenson County, VA, Grayson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Wythe County, VA, McDowell County, WV

The radar

The Knoxville radar (KMRX), 46 km from the middle of the area, began a volume at 20:06 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.1 hours before the alert went out and 278 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 2022-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2022-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
213 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
May 6, 6:42 AM EDTMesoscale DiscussionSPCClay, Early, Seminole93 min
May 6, 11:39 AM EDTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Baker, Baldwin, Barrow and 101 more2 hr
May 6, 12:57 PM EDTTornado WatchSPCAppling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 67 more7 hr
May 6, 1:04 PM EDTMesoscale DiscussionSPCDawson, Fannin, Gilmer, Habersham, Lumpkin, Murray and 4 more86 min
May 6, 1:41 PM EDTTornado WatchSPCBanks, Catoosa, Dawson, Elbert, Fannin, Franklin and 13 more6 hr
May 6, 3:22 PM EDTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 66 more113 min
May 6, 3:47 PM EDTSevere Thunderstorm WatchSPCBrantley, Bryan, Bulloch, Burke, Camden, Candler and 18 more6 hr
May 6, 6:15 PM EDTMesoscale DiscussionSPCCharlton, Clinch, Echols60 min
May 6, 2:06 PM EDTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Boone, Boyle and 43 more69 min
May 6, 1:53 PM EDTMesoscale DiscussionSPCAlamance, Bertie, Caswell, Chatham, Chowan, Davidson and 30 more2 hr
May 6, 2:32 PM EDTTornado WatchSPCAlamance, Anson, Beaufort, Bertie, Camden, Caswell and 48 more9 hr
May 6, 5:50 PM EDTMesoscale DiscussionSPCBladen, Brunswick, Columbus, New Hanover, Onslow, Pender and 1 more55 min
May 6, 5:51 PM EDTMesoscale DiscussionSPCAlamance, Beaufort, Bertie, Camden, Caswell, Chatham and 33 more84 min
May 6, 6:29 PM EDTMesoscale DiscussionSPCAlexander, Alleghany, Ashe, Avery, Buncombe, Burke and 21 more91 min
May 6, 6:41 PM EDTSevere Thunderstorm WatchSPCBladen, Columbus, Robeson2 hr

Nearby

Mesoscale Discussions in North Carolina, 2022Mesoscale Discussions in Tennessee, 2022Mesoscale Discussions in Kentucky, 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.