Alert archive / North Carolina / Mesoscale Discussions in 2005

Mesoscale Discussion 1687

July 7, 200513 counties in Georgia; 16 counties in North Carolina; 15 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2005, 5:44 AM EDT for 13 counties in Georgia; 16 counties in North Carolina; 15 counties in South Carolina. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Jul 7, 2005, 5:44 AM EDT (09:44 UTC)
Expired
Jul 7, 2005, 7:15 AM EDT
In force
91 min
Issued by
the Storm Prediction Center
All 44 counties

Banks County, GA, Clarke County, GA, Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Jackson County, GA, Madison County, GA, Morgan County, GA, Oconee County, GA, Oglethorpe County, GA, Rabun County, GA, Stephens County, GA, Alexander County, NC, Burke County, NC, Cabarrus County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Henderson County, NC, Iredell County, NC, Lincoln County, NC, Mecklenburg County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Transylvania County, NC, Union County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Lancaster County, SC, Laurens County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 36 km from the middle of the area, began a volume at 09:44 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, 9.7 hours before the alert went out and 277 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 2005-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 204 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 2005-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
204 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
1642 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 6, 10:53 PM EDTMesoscale DiscussionSPCButts, Carroll, Chattahoochee, Cherokee, Clayton, Cobb and 30 more2 hr
Jul 7, 1:47 AM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bartow, Bibb, Butts and 65 more28 min
Jul 7, 3:10 AM EDTTornado WatchSPCBanks, Clarke, Elbert, Franklin, Habersham, Hart and 7 more6 hr
Jul 7, 8:43 AM EDTMesoscale DiscussionSPCColumbia, Elbert, Glascock, Lincoln, McDuffie, Richmond and 3 more32 min
Jul 7, 9:00 AM EDTTornado WatchSPCAlamance, Alexander, Burke, Cabarrus, Caldwell, Caswell and 27 more7 hr
Jul 7, 12:33 PM EDTMesoscale DiscussionSPCAlexander, Burke, Caldwell, Caswell, Catawba, Cleveland and 15 more117 min
Jul 7, 1:17 PM EDTMesoscale DiscussionSPCBertie, Chowan, Dare, Edgecombe, Halifax, Hertford and 8 more88 min
Jul 7, 2:05 PM EDTTornado WatchSPCBertie, Camden, Chowan, Currituck, Dare, Edgecombe and 14 more8 hr
Jul 7, 3:45 PM EDTTornado WatchSPCAlamance, Cabarrus, Caswell, Chatham, Davidson, Davie and 17 more6 hr
Jul 7, 4:47 PM EDTMesoscale DiscussionSPCHalifax, Northampton118 min
Jul 7, 6:01 PM EDTMesoscale DiscussionSPCBertie, Camden, Chatham, Chowan, Currituck, Dare and 20 more59 min

Nearby

Mesoscale Discussions in North Carolina, 2005Mesoscale Discussions in South Carolina, 2005Mesoscale Discussions in Georgia, 2005Every mesoscale discussion in 2005

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.