Alert archive / North Carolina / Mesoscale Discussions in 2007

Mesoscale Discussion 251

March 1, 200746 counties in North Carolina; 5 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Mar 1, 2007, 11:44 PM EST for 46 counties in North Carolina; 5 counties in South Carolina. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Mar 1, 2007, 11:44 PM EST (04:44 UTC)
Expired
Mar 2, 2007, 1:15 AM EST
In force
91 min
Issued by
the Storm Prediction Center
All 51 counties

Alamance County, NC, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Caswell County, NC, Chatham County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Davidson County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Granville County, NC, Greene County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Orange County, NC, Pender County, NC, Person County, NC, Pitt County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC, Dillon County, SC, Florence County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC

The radar

The Raleigh/Durham radar (KRAX), 53 km from the middle of the area, began a volume at 04:44 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 00:00Z, 4.7 hours before the alert went out and 147 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 00:00Z on 2007-03-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 46 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 00:00Z on 2007-03-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 462 square meters per square second.1939587897117Sfc1 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
46 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
462 m²/s²
0-3 km storm-relative helicity
675 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Mar 1, 7:59 PM ESTMesoscale DiscussionSPCUnion91 min
Mar 1, 8:27 PM ESTTornado WatchSPCAlexander, Burke, Cabarrus, Caldwell, Catawba, Cleveland and 10 more9 hr
Mar 2, 12:28 AM ESTTornado WatchSPCAlamance, Anson, Bladen, Brunswick, Chatham, Columbus and 31 more8 hr
Mar 2, 1:45 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 19 more90 min
Mar 2, 2:45 AM ESTTornado WatchSPCBeaufort, Carteret, Craven, Dare, Duplin, Greene and 10 more7 hr
Mar 2, 3:37 AM ESTMesoscale DiscussionSPCBertie, Camden, Caswell, Chowan, Currituck, Durham and 16 more83 min
Mar 2, 4:13 AM ESTMesoscale DiscussionSPCAnson, Bladen, Brunswick, Cabarrus, Chatham, Columbus and 26 more62 min
Mar 2, 5:10 AM ESTTornado WatchSPCBertie, Camden, Chowan, Currituck, Gates, Hertford and 3 more6 hr
Mar 2, 8:25 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 23 more95 min
Mar 1, 8:40 PM ESTTornado WatchSPCMcCormick8 hr
Mar 1, 10:11 PM ESTMesoscale DiscussionSPCAllendale, Bamberg, Barnwell, Beaufort, Berkeley, Charleston and 5 more94 min
Mar 2, 12:54 AM ESTTornado WatchSPCAllendale, Beaufort, Berkeley, Charleston, Colleton, Dorchester and 2 more7 hr
Mar 2, 3:00 AM ESTMesoscale DiscussionSPCAiken, Calhoun, Clarendon, Fairfield, Kershaw, Lancaster and 5 more90 min
Mar 2, 6:21 AM ESTMesoscale DiscussionSPCBeaufort, Berkeley, Charleston84 min

Nearby

Mesoscale Discussions in North Carolina, 2007Mesoscale Discussions in South Carolina, 2007Every mesoscale discussion in 2007

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.