Alert archive / North Carolina / Mesoscale Discussions in 2014

Mesoscale Discussion 1396

July 15, 201426 counties in North Carolina; 7 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jul 15, 2014, 6:07 PM EDT for 26 counties in North Carolina; 7 counties in South Carolina. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Jul 15, 2014, 6:07 PM EDT (22:07 UTC)
Expired
Jul 15, 2014, 7:30 PM EDT
In force
83 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 33 counties

Anson County, NC, Chatham County, NC, Cumberland County, NC, Duplin County, NC, Edgecombe County, NC, Franklin County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Lenoir County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Pitt County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Wayne County, NC, Wilson County, NC, Chester County, SC, Chesterfield County, SC, Darlington County, SC, Dillon County, SC, Kershaw County, SC, Lancaster County, SC, Marlboro County, SC

The radar

The Raleigh/Durham radar (KRAX), 82 km from the middle of the area, began a volume at 22:07 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, 10.1 hours before the alert went out and 111 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 2014-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 946 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 2014-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
946 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
887 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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.

IssuedProductOfficeCountiesLasted
Jul 15, 1:23 PM EDTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Chowan, Edgecombe, Franklin and 19 more97 min
Jul 15, 1:43 PM EDTSevere Thunderstorm WatchSPCBertie, Camden, Caswell, Chowan, Currituck, Gates and 5 more7 hr
Jul 15, 4:41 PM EDTMesoscale DiscussionSPCBertie, Camden, Caswell, Chowan, Currituck, Gates and 5 more94 min
Jul 15, 12:30 PM EDTMesoscale DiscussionSPCAbbeville, Aiken, Allendale, Bamberg, Barnwell, Beaufort and 21 more90 min

Nearby

Mesoscale Discussions in North Carolina, 2014Mesoscale Discussions in South Carolina, 2014Every mesoscale discussion in 2014

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.