Alert archive / North Carolina / Mesoscale Discussions in 2006
Mesoscale Discussion 1663
The Storm Prediction Center issued this mesoscale discussion at Jul 29, 2006, 1:52 PM EDT for 28 counties in Georgia; 33 counties in North Carolina; 32 counties in South Carolina. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- Jul 29, 2006, 1:52 PM EDT (17:52 UTC)
- Expired
- Jul 29, 2006, 3:45 PM EDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
All 93 counties
Baldwin County, GA, Barrow County, GA, Burke County, GA, Candler County, GA, Clarke County, GA, Columbia County, GA, Emanuel County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lincoln County, GA, McDuffie County, GA, Morgan County, GA, Oconee County, GA, Oglethorpe County, GA, Putnam County, GA, Richmond County, GA, Screven County, GA, Taliaferro County, GA, Treutlen County, GA, Warren County, GA, Washington County, GA, Wilkes County, GA, Wilkinson County, GA, Alamance County, NC, Anson County, NC, Bladen County, NC, Cabarrus County, NC, Chatham County, NC, Columbus County, NC, Cumberland County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Greene 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, Orange County, NC, Pender County, NC, Pitt County, NC, Randolph 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, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Berkeley County, SC, Calhoun County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Greenwood County, SC, Hampton County, SC, Horry County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Williamsburg County, SC
The radar
The Columbia radar (KCAE), 54 km from the middle of the area, began a volume at 17:51 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, 5.9 hours before the alert went out and 170 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
- 2219 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 291752 SWOMCD SPC MCD 291752 NCZ000-SCZ000-GAZ000-291945- MESOSCALE DISCUSSION 1663 NWS STORM PREDICTION CENTER NORMAN OK 1252 PM CDT SAT JUL 29 2006 AREAS AFFECTED...EASTERN GA AND PIEDMONT/COASTAL PLAIN AREAS OF NC AND SC CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 291752Z - 291945Z POTENTIAL FOR ISOLATED DAMAGING WINDS/SOME LARGE HAIL IS EXPECTED TO INCREASE OVER THE NEXT SEVERAL HOURS ACROSS EASTERN GA INTO THE PIEDMONT/COASTAL PLAIN AREAS OF BOTH NC AND SC. ALTHOUGH NOT CURRENTLY ANTICIPATED...WILL MONITOR FOR A POSSIBLE SEVERE THUNDERSTORM WATCH. WATER VAPOR/VISIBLE SATELLITE IMAGERY FEATURES WELL DEFINED MID LEVEL CIRCULATION MOVING EASTWARD ACROSS THE NC/SC APPALACHIANS EARLY THIS AFTERNOON. ON THE PERIPHERY OF THIS FEATURE...AMPLE INSOLATION/TEMPERATURES WARMING INTO THE LOWER 90S AMIDST A RELATIVELY MOIST AIRMASS IS LEADING TO A EROSION OF SURFACE BASED CINH ACROSS EASTERN GA AND PIEDMONT/COASTAL PLAIN AREAS OF NC/SC EARLY THIS AFTERNOON. SCATTERED TO NUMEROUS THUNDERSTORMS APPEAR LIKELY TO DEVELOP OVER THE NEXT SEVERAL HOURS...ATTRIBUTABLE TO DIFFERENTIAL HEATING/MID LEVEL IMPULSE ASSOCIATED ASCENT...IN ADDITION TO THE COASTAL SEA BREEZE. WSR-88D VWP FROM GREENVILLE-SPARTANBURG CAPTURES ENHANCED LOW TO MID TROPOSPHERIC FLOW VIA THE MID LEVEL CIRCULATION...WITH 25-35 KT WESTERLY WINDS EVIDENT BETWEEN 1-6 KM. THIS MODESTLY ENHANCED VERTICAL SHEAR WILL LIKELY PROVIDE SOME ADDITIONAL FOCUS/ORGANIZATION FOR STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON AS THE MID LEVEL CIRCULATION SPREADS EASTWARD. THE STRONGEST STORMS WILL BE CAPABLE OF DAMAGING DOWNBURSTS/SOME LARGE HAIL/LOCALLY HEAVY RAINFALL. ..GUYER.. 07/29/2006 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MHX...RAH...ILM...CHS...CAE...GSP...FFC... 34098373 34088251 34988110 36087964 36177815 35777701 34547773 33937891 32898023 32288243 32748352
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 2:55 PM EDT | Mesoscale Discussion | SPC | Butts, Carroll, Clayton, Cobb, Coweta, Crawford and 20 more | 2 hr |
Nearby
Mesoscale Discussions in North Carolina, 2006Mesoscale Discussions in South Carolina, 2006Mesoscale Discussions in Georgia, 2006Every mesoscale discussion in 2006
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.