Alert archive / Georgia / Mesoscale Discussions in 2008
Mesoscale Discussion 1521
The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2008, 1:59 PM EDT for 30 counties in Georgia; 10 counties in North Carolina; 25 counties in South Carolina. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Jun 22, 2008, 1:59 PM EDT (17:59 UTC)
- Expired
- Jun 22, 2008, 3:30 PM EDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 65 counties
Appling County, GA, Bacon County, GA, Brantley County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Chatham County, GA, Coffee County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Laurens County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Montgomery County, GA, Pierce County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Wayne County, GA, Wheeler County, GA, Bladen County, NC, Brunswick County, NC, Columbus County, NC, Craven County, NC, Duplin County, NC, Jones County, NC, Onslow County, NC, Pender County, NC, Robeson County, NC, Sampson County, NC, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Hampton County, SC, Horry County, SC, Jasper 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), 92 km from the middle of the area, began a volume at 17:59 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.0 hours before the alert went out and 302 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
- 866 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 808 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 221800 SWOMCD SPC MCD 221759 NCZ000-SCZ000-GAZ000-221930- MESOSCALE DISCUSSION 1521 NWS STORM PREDICTION CENTER NORMAN OK 1259 PM CDT SUN JUN 22 2008 AREAS AFFECTED...COASTAL PLAINS OF NC/SC/GA CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY VALID 221759Z - 221930Z A MARGINAL SEVERE WIND/HAIL THREAT IS EXPECTED THROUGH THE BULK OF AFTERNOON AS TSTM COVERAGE CONTINUES TO INCREASE ACROSS THE COASTAL AREAS OF GA TO NC. A WW IS NOT ANTICIPATED BUT CONVECTIVE TRENDS WILL BE MONITORED. 17Z SURFACE ANALYSIS PLACED A WEAK SURFACE TROUGH/CONFLUENCE ZONE FROM AROUND 30 S MCN NEWD TO NEAR ILM. RECENT RADAR/SATELLITE IMAGERY DEPICTS TSTMS/CBS INCREASING ALONG THIS AXIS AND COASTAL SEA BREEZE...WITH ASCENT LIKELY AIDED BY MID-LEVEL IMPULSE CROSSING THE SRN APPALACHIANS. DESPITE SURFACE TEMPERATURES APPROACHING 90 DEG F AND DEW POINTS INTO THE LOWER 70S S OF THE SURFACE TROUGH...MID-LEVEL LAPSE RATES AND DEEP-LAYER SHEAR SHOULD REMAIN SOMEWHAT WEAKER THAN AREAS FARTHER N. NEVERTHELESS...EFFECTIVE SHEAR AROUND 25-30 KT WILL SUPPORT MULTICELLULAR CLUSTERS WITH ATTENDANT THREATS OF SEVERE HAIL/DAMAGING WINDS. ..GRAMS.. 06/22/2008 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MHX...RAH...ILM...CHS...CAE...JAX...FFC...TAE... 33938139 34727976 35087845 35337685 35077659 33987825 33707882 32598025 31498135 31088210 31408299 31998325 32838274 33808158
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Alexander, Alleghany, Ashe, Avery, Burke and 21 more | 11 hr |
| Jun 22, 4:28 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Ashe, Avery, Burke and 30 more | 92 min |
Nearby
Mesoscale Discussions in Georgia, 2008Mesoscale Discussions in South Carolina, 2008Mesoscale Discussions in North Carolina, 2008Every mesoscale discussion in 2008
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.