Alert archive / North Carolina / Mesoscale Discussions in 2007

Mesoscale Discussion 256

March 2, 20074 states

The Storm Prediction Center issued this mesoscale discussion at Mar 2, 2007, 4:13 AM EST for 4 states. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued
Mar 2, 2007, 4:13 AM EST (09:13 UTC)
Expired
Mar 2, 2007, 5:15 AM EST
In force
62 min
Issued by
the Storm Prediction Center
All 101 counties

Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Lafayette County, FL, Nassau County, FL, Putnam County, FL, Saint Johns County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Bacon County, GA, Brantley County, GA, Bryan County, GA, Bulloch County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Effingham County, GA, Evans County, GA, Glynn County, GA, Jenkins County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Pierce County, GA, Screven County, GA, Tattnall County, GA, Toombs County, GA, Ware County, GA, Wayne County, GA, Anson County, NC, Bladen County, NC, Brunswick County, NC, Cabarrus County, NC, Chatham County, NC, Columbus County, NC, Cumberland County, NC, Davidson County, NC, Duplin County, NC, Durham County, NC, Franklin County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, New Hanover County, NC, Orange County, NC, Pender County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rowan County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Wayne County, NC, Wilson County, NC, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC, Williamsburg County, SC

The radar

The Charleston,SC radar (KCLX), 21 km from the middle of the area, began a volume at 09:13 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 9.2 hours before the alert went out and 96 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, Charleston AFB, SC at 00:00Z on 2007-03-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2007-03-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 square meters per square second.19395878Sfc1 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
16 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
488 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
402 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, 8:39 PM ESTTornado WatchSPCBay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 12 more8 hr
Mar 1, 10:11 PM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Brevard, Citrus, Clay and 18 more94 min
Mar 2, 12:54 AM ESTTornado WatchSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 10 more7 hr
Mar 2, 2:33 AM ESTMesoscale DiscussionSPCFranklin, Jefferson, Leon, Madison, Taylor, Wakulla87 min
Mar 2, 6:21 AM ESTMesoscale DiscussionSPCAlachua, Bradford, Citrus, Clay, Duval, Flagler and 13 more84 min
Mar 2, 10:54 AM ESTMesoscale DiscussionSPCFlagler, Hernando, Hillsborough, Lake, Orange, Pasco and 3 more2 hr
Mar 1, 8:27 PM ESTTornado WatchSPCBurke, Columbia, Elbert, Franklin, Habersham, Hart and 5 more9 hr
Mar 2, 3:00 AM ESTMesoscale DiscussionSPCRichmond90 min
Mar 1, 7:59 PM ESTMesoscale DiscussionSPCUnion91 min
Mar 1, 11:44 PM ESTMesoscale DiscussionSPCAlamance, Beaufort, Bertie, Bladen, Brunswick, Caswell and 40 more91 min
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, 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

Nearby

Mesoscale Discussions in North Carolina, 2007Mesoscale Discussions in South Carolina, 2007Mesoscale Discussions in Georgia, 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.