Alert archive / North Carolina / Mesoscale Discussions in 2003
Mesoscale Discussion 1807
The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2003, 12:50 PM EDT for 22 counties in Georgia; 24 counties in North Carolina; 20 counties in South Carolina. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2003, 12:50 PM EDT (16:50 UTC)
- Expired
- Jul 13, 2003, 2:45 PM EDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
All 66 counties
Baldwin County, GA, Bibb County, GA, Burke County, GA, Columbia County, GA, Crawford County, GA, Glascock County, GA, Hancock County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, McDuffie County, GA, Monroe County, GA, Putnam County, GA, Richmond County, GA, Screven County, GA, Twiggs County, GA, Upson County, GA, Warren County, GA, Washington County, GA, Wilkinson County, GA, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Columbus County, NC, Cumberland County, NC, Duplin County, NC, Edgecombe County, NC, Greene County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, Pender County, NC, Pitt County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Florence County, SC, Horry County, SC, Kershaw 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 Columbia radar (KCAE), 56 km from the middle of the area, began a volume at 16:49 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
Charleston AFB, SC (KCHS), launched 12:00Z, 4.8 hours before the alert went out and 161 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.
- Mixed-layer CAPE
- 1391 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 885 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 4:05 PM EDT | Severe Thunderstorm Watch | SPC | Catoosa, Chattooga, Dade, Murray, Walker, Whitfield | 5 hr |
| Jul 13, 6:26 PM EDT | Mesoscale Discussion | SPC | Catoosa, Chattooga, Dade, Gordon, Murray, Walker and 1 more | 94 min |
| Jul 13, 1:16 PM EDT | Mesoscale Discussion | SPC | Alleghany, Ashe, Avery, Buncombe, Cherokee, Clay and 12 more | 119 min |
| Jul 13, 6:09 PM EDT | Mesoscale Discussion | SPC | Bladen, Craven, Cumberland, Duplin, Jones, Lenoir and 4 more | 66 min |
Nearby
Mesoscale Discussions in North Carolina, 2003Mesoscale Discussions in Georgia, 2003Mesoscale Discussions in South Carolina, 2003Every mesoscale discussion in 2003
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.