Alert archive / North Carolina / Mesoscale Discussions in 2012
Mesoscale Discussion 1011
The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2012, 4:31 PM EDT for 50 counties in North Carolina; 22 counties in South Carolina. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Jun 1, 2012, 4:31 PM EDT (20:31 UTC)
- Expired
- Jun 1, 2012, 5:30 PM EDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 72 counties
Alamance County, NC, Anson County, NC, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Carteret County, NC, Chatham County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Dare County, NC, Davidson County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Greene County, NC, Guilford County, NC, Harnett County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, New Hanover County, NC, Onslow County, NC, Orange County, NC, Pamlico County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Tyrrell County, NC, Wake County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Allendale County, SC, Bamberg County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chesterfield 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, Kershaw County, SC, Lee County, SC, Marion County, SC, Marlboro County, SC, Orangeburg County, SC, Sumter County, SC, Williamsburg County, SC
The nearest sounding before it
Newport, NC (KMHX), launched 12:00Z, 8.5 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
- 1203 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 581 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
679
ACUS11 KWNS 012031
SWOMCD
SPC MCD 012031
NCZ000-SCZ000-GAZ000-012130-
MESOSCALE DISCUSSION 1011
NWS STORM PREDICTION CENTER NORMAN OK
0331 PM CDT FRI JUN 01 2012
AREAS AFFECTED...NC...SC
CONCERNING...SEVERE THUNDERSTORM WATCH 334...
VALID 012031Z - 012130Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 334
CONTINUES.
SUMMARY...POTENTIAL FOR SEVERE STORMS WILL CONTINUE FOR SEVERAL MORE
HOURS ACROSS PORTIONS OF ERN NC AND SC.
DISCUSSION...PRE-FRONTAL/THERMAL TROUGH AXIS ACROSS THE PIEDMONT MAY
CONTINUE TO PROVIDE A FOCUS FOR STORMS INTO THE EVENING AS COLD
FRONT APPROACHES LATER TONIGHT. AIRMASS ACROSS THE ERN CAROLINAS
REMAINS MOIST AND MODERATELY UNSTABLE AND DEEP LAYER SHEAR ACROSS
THE REGION HAS INCREASED SINCE EARLIER TODAY. THUS...A FEW STORMS
ARE LIKELY TO EXHIBIT SUPERCELL STRUCTURE WITH ATTENDANT THREATS OF
HAIL AND LOCALLY STRONG OUTFLOW WINDS. ACTIVITY ACROSS SRN PORTION
OF THE WATCH HAS STRUGGLED TO INCREASE IN INTENSITY...PERHAPS DUE TO
LACK OF STRONGER LARGE SCALE FORCING ACROSS THIS PORTION OF THE
WATCH. WITH TIME...STRONG ASCENT WITH THE LARGER SCALE UPPER TROUGH
MAY BEGIN TO INFLUENCE THIS AREA WITH A SUBSEQUENT INCREASE IN
SCATTERED SEVERE STORMS.
..CARBIN.. 06/01/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...AKQ...MHX...RAH...ILM...RNK...CHS...CAE...GSP...
LAT...LON 36278016 36207545 35577518 35237536 34987575 34537637
34307738 33787786 33637846 32977897 32647940 32327994
32538164 33228128 34528066 35478026 36098053 36278016SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 1:03 PM EDT | Mesoscale Discussion | SPC | Bertie, Camden, Chowan, Currituck, Edgecombe, Franklin and 13 more | 87 min |
| Jun 1, 1:28 PM EDT | Tornado Watch | SPC | Alleghany, Ashe, Caswell, Rockingham, Stokes, Surry and 3 more | 8 hr |
| Jun 1, 1:50 PM EDT | Tornado Watch | SPC | Bertie, Camden, Chowan, Currituck, Gates, Granville and 8 more | 7 hr |
| Jun 1, 1:54 PM EDT | Mesoscale Discussion | SPC | Anson, Bladen, Brunswick, Chatham, Columbus, Craven and 23 more | 66 min |
| Jun 1, 2:13 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Beaufort, Bladen, Brunswick, Carteret and 41 more | 8 hr |
| Jun 1, 3:35 PM EDT | Mesoscale Discussion | SPC | Alleghany, Ashe, Forsyth, Rockingham, Stokes, Surry and 2 more | 55 min |
| Jun 1, 3:49 PM EDT | Mesoscale Discussion | SPC | Granville, Halifax, Northampton, Person, Vance, Warren | 56 min |
| Jun 1, 6:54 PM EDT | Mesoscale Discussion | SPC | Bertie, Camden, Chowan, Currituck, Gates, Granville and 8 more | 2 hr |
| Jun 1, 7:42 PM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Beaufort, Bertie, Bladen, Brunswick and 40 more | 2 hr |
Nearby
Mesoscale Discussions in North Carolina, 2012Mesoscale Discussions in South Carolina, 2012Every mesoscale discussion in 2012
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.