Alert archive / North Carolina / Mesoscale Discussions in 2013
Mesoscale Discussion 1069
The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2013, 3:22 PM CDT for 8 states. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- Jun 13, 2013, 3:22 PM CDT (20:22 UTC)
- Expired
- Jun 13, 2013, 4:15 PM CDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
All 188 counties
Colbert County, AL, DeKalb County, AL, Franklin County, AL, Jackson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Sussex County, DE, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Franklin County, GA, Gilmer County, GA, Gordon County, GA, Habersham County, GA, Lumpkin County, GA, Murray County, GA, Pickens County, GA, Rabun County, GA, Stephens County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA, Anne Arundel County, MD, Calvert County, MD, Caroline County, MD, Charles County, MD, City of Baltimore, MD, Dorchester County, MD, Kent County, MD, Prince George's County, MD, Queen Anne's County, MD, Saint Mary's County, MD, Somerset County, MD, Talbot County, MD, Wicomico County, MD, Alamance County, NC, Alexander County, NC, Anson County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Caswell County, NC, Catawba County, NC, Chatham County, NC, Cherokee County, NC, Clay County, NC, Cleveland County, NC, Cumberland County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Gaston County, NC, Gates County, NC, Graham County, NC, Granville County, NC, Greene County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Haywood County, NC, Henderson County, NC, Hertford County, NC, Hoke County, NC, Iredell County, NC, Jackson County, NC, Johnston County, NC, Lee County, NC, Lincoln County, NC, Macon County, NC, McDowell County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Person County, NC, Polk County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Rowan County, NC, Rutherford County, NC, Scotland County, NC, Stanly County, NC, Stokes County, NC, Swain County, NC, Transylvania County, NC, Union County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC, Yadkin County, NC, Yancey County, NC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Fairfield County, SC, Greenville County, SC, Lancaster County, SC, Laurens County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Union County, SC, York County, SC, Bradley County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Lincoln County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Polk County, TN, Sequatchie County, TN, Accomack County, VA, Amelia County, VA, Brunswick County, VA, Caroline County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Alexandria, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Danville, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Hopewell, VA, City of Newport News, VA, City of Norfolk, VA, City of Petersburg, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Richmond, VA, City of Suffolk, VA, City of Williamsburg, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Gloucester County, VA, Goochland County, VA, Greensville County, VA, Halifax County, VA, Hanover County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, King George County, VA, King William County, VA, Lancaster County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA, York County, VA
The radar
The Roanoke radar (KFCX), 72 km from the middle of the area, began a volume at 20:25 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 12:00Z, 8.4 hours before the alert went out and 58 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
- 437 J/kg
- Mixed-layer CIN
- -333 J/kg
- Mixed-layer LCL
- 1862 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
516
ACUS11 KWNS 132023
SWOMCD
SPC MCD 132022
DEZ000-MDZ000-VAZ000-NCZ000-DCZ000-SCZ000-GAZ000-TNZ000-ALZ000-132115-
MESOSCALE DISCUSSION 1069
NWS STORM PREDICTION CENTER NORMAN OK
0322 PM CDT THU JUN 13 2013
AREAS AFFECTED...DELMARVA...WRN/CNTRL NC...SERN TN...NRN AL/GA/SC
CONCERNING...SEVERE THUNDERSTORM WATCH 306...307...308...
VALID 132022Z - 132115Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
306...307...308...CONTINUES.
SUMMARY...SEVERE WEATHER THREAT CONTINUES FOR WW/S 306...307...AND
308.
DISCUSSION...LINE OF STRONG TO SEVERE THUNDERSTORMS OCCURRING ALONG
AND AHEAD OF A COLD FRONT EXTENDS FROM THE DELMARVA REGION SWWD INTO
WRN NC...SERN TN...AND NRN AL/GA. ANOTHER STORM NE OF THE DC METRO
AREA HAS SHOWN SUPERCELLULAR AND BOWING TENDENCIES DURING THE LAST
HOUR. ACTIVITY OVER THE DELMARVA INTO WRN NC IS MORE PERPENDICULAR
TO UPPER-LEVEL FLOW...AND THUS HAS FASTER FORWARD MOTION COMPARED TO
ACTIVITY TRAILING TO THE SW...WHICH IS MORE PARALLEL TO UPPER FLOW.
STRONG HEATING AND A MOIST AIRMASS EXISTS AHEAD OF ONGOING
STORMS...WITH MLCAPE VALUES RANGING FROM 1500-3000 J/KG. IN
ADDITION...SHEAR PROFILES ARE STRONG...WHICH FAVORS CONTINUED STORM
ORGANIZATION. GIVEN THIS ENVIRONMENT...SEVERE WEATHER THREAT
CONTINUES FOR REMAIN PORTIONS OF WW/S 306 AND 307...AND MUCH OF WW
308.
..GARNER.. 06/13/2013
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PHI...AKQ...MHX...LWX...RAH...ILM...RNK...CAE...
GSP...MRX...FFC...OHX...BMX...HUN...
LAT...LON 34388028 34328802 35118773 36038145 36787930 38147759
39347676 39287583 38837527 36847602 35447772 34388028SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 12:19 PM CDT | Mesoscale Discussion | SPC | Colbert, DeKalb, Jackson, Lauderdale, Limestone, Madison | 26 min |
| Jun 13, 12:40 PM CDT | Severe Thunderstorm Watch | SPC | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 7 hr |
| Jun 13, 3:15 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Calhoun, Chambers, Cherokee, Clay and 15 more | 90 min |
| Jun 13, 6:19 PM CDT | Mesoscale Discussion | SPC | Bibb, Calhoun, Chilton, Clay, Cleburne, Coosa and 7 more | 86 min |
| Jun 13, 1:40 AM CDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Jun 13, 4:27 AM CDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Jun 13, 6:30 AM CDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 4 hr |
| Jun 13, 7:10 AM CDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 95 min |
| Jun 13, 10:38 AM CDT | Mesoscale Discussion | SPC | Sussex | 67 min |
| Jun 13, 11:19 AM CDT | Severe Thunderstorm Watch | SPC | Kent, Sussex | 7 hr |
| Jun 13, 3:07 PM CDT | Mesoscale Discussion | SPC | Burke, Columbia, Glascock, Jefferson, Jenkins, Lincoln and 4 more | 113 min |
| Jun 13, 5:28 PM CDT | Severe Thunderstorm Watch | SPC | Baldwin, Barrow, Bibb, Burke, Butts, Carroll and 51 more | 7 hr |
| Jun 12, 10:22 PM CDT | Mesoscale Discussion | SPC | Allegany, Garrett | 53 min |
| Jun 12, 10:53 PM CDT | Severe Thunderstorm Watch | SPC | Garrett | 7 hr |
| Jun 13, 2:58 AM CDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 7 more | 7 hr |
| Jun 13, 10:59 AM CDT | Mesoscale Discussion | SPC | Garrett | 61 min |
| Jun 13, 1:08 PM CDT | Severe Thunderstorm Watch | SPC | Dorchester, Somerset, Wicomico, Worcester | 8 hr |
| Jun 13, 1:20 PM CDT | Mesoscale Discussion | SPC | Anne Arundel, Howard, Kent, Montgomery, Prince George's, City of Baltimore | 55 min |
| Jun 13, 12:53 PM CDT | Mesoscale Discussion | SPC | Alamance, Bertie, Camden, Chatham, Chowan, Cumberland and 25 more | 97 min |
| Jun 13, 7:32 AM CDT | Mesoscale Discussion | SPC | Claiborne, Hancock, Hawkins, Sullivan | 58 min |
Nearby
Mesoscale Discussions in North Carolina, 2013Mesoscale Discussions in Virginia, 2013Mesoscale Discussions in Georgia, 2013Every mesoscale discussion in 2013
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.