Alert archive / North Carolina / Mesoscale Discussions in 2012
Mesoscale Discussion 14
The Storm Prediction Center issued this mesoscale discussion at Jan 11, 2012, 5:55 PM EST for 32 counties in North Carolina; York County, South Carolina. It was in force for 35 min.
The area
The outline as issued.
The facts
- Issued
- Jan 11, 2012, 5:55 PM EST (22:55 UTC)
- Expired
- Jan 11, 2012, 6:30 PM EST
- In force
- 35 min
- Issued by
- the Storm Prediction Center
All 33 counties
Alamance County, NC, Alexander County, NC, Anson County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Cumberland County, NC, Davidson County, NC, Davie County, NC, Forsyth County, NC, Gaston County, NC, Guilford County, NC, Harnett County, NC, Hoke County, NC, Iredell County, NC, Lee County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Randolph County, NC, Richmond County, NC, Rowan County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Yadkin County, NC, York County, SC
The radar
The Raleigh/Durham radar (KRAX), 157 km from the middle of the area, began a volume at 22:57 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, 10.9 hours before the alert went out and 83 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
163
ACUS11 KWNS 112255
SWOMCD
SPC MCD 112255
NCZ000-SCZ000-112330-
MESOSCALE DISCUSSION 0014
NWS STORM PREDICTION CENTER NORMAN OK
0455 PM CST WED JAN 11 2012
AREAS AFFECTED...FAR NRN SC INTO PARTS OF NC
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 112255Z - 112330Z
A POTENTIAL FOR STRONG TO ISOLATED SEVERE STORMS EXISTS ACROSS
MAINLY WRN/CENTRAL NC AND FAR NRN SC INTO THIS EVENING. WW ISSUANCE
IS POSSIBLE. HOWEVER...THE OVERALL LIMITING FACTOR FOR ISSUANCE AT
THIS MOMENT IS THE AVAILABILITY OF WEAK INSTABILITY AND TIME OF DAY
WITH LOSS OF DAYTIME HEATING. THIS REGION WILL REMAIN MONITORED FOR
A POTENTIAL WATCH ISSUANCE.
A SMALL WARM SECTOR...CURRENTLY MOVING INTO WRN/CENTRAL NC IN
VICINITY AND N OF CLT...WILL CONTINUE TO SPREAD NEWD THIS EVENING.
DESPITE THE TIME OF DAY /WITH THE LOSS OF DAYTIME HEATING/...
DESTABILIZATION IN THE WARM SECTOR COMBINED WITH STRONG DPVA
ATTENDANT TO A COMPACT/VIGOROUS SHORTWAVE TROUGH NOW MOVING ENEWD
INTO THE WRN CAROLINAS WILL PROVE SUFFICIENT FOR ADDITIONAL STRONGER
UPDRAFTS. LOW LEVEL CONVERGENCE/ENHANCED HODOGRAPH CURVATURE INVOF
A TRIPLE POINT NOW INVOF THE NC COUNTIES OF RUTHERFORD/
CLEVELAND/BURKE WILL FURTHER PROVIDE FAVORABLE SUPPORT FOR STORM
DEVELOPMENT AND ROTATION AS THE TRIPLE POINT TRACKS NEWD.
..PETERS.. 01/11/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...RAH...ILM...RNK...CAE...GSP...
LAT...LON 34768087 35138176 35788189 36288103 36237977 35987871
35377849 34727893 34667956 34768087SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 6:28 PM EST | Mesoscale Discussion | SPC | Carteret, Currituck, Dare, Hyde, Pamlico, Tyrrell | 92 min |
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; radar from the NEXRAD Level II archive.