Alert archive / North Carolina / Mesoscale Discussions in 2007
Mesoscale Discussion 1321
The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2007, 7:38 PM EDT for 67 counties in North Carolina; 17 counties in Virginia. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Jun 29, 2007, 7:38 PM EDT (23:38 UTC)
- Expired
- Jun 29, 2007, 8:45 PM EDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 84 counties
Alamance County, NC, Anson County, NC, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Cabarrus County, NC, Camden County, NC, Carteret County, NC, Caswell County, NC, Chatham County, NC, Chowan County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Dare County, NC, Davidson County, NC, Davie County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Greene County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Hyde County, NC, Iredell County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Onslow County, NC, Orange County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Person County, NC, Pitt County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rockingham County, NC, Rowan County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Tyrrell County, NC, Union County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Yadkin County, NC, Brunswick County, VA, City of Chesapeake, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Newport News, VA, City of Norfolk, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Virginia Beach, VA, Greensville County, VA, Isle of Wight County, VA, Mecklenburg County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA
The radar
The Raleigh/Durham radar (KRAX), 68 km from the middle of the area, began a volume at 23:40 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
Newport, NC (KMHX), launched 12:00Z, 11.6 hours before the alert went out and 134 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
- 719 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 854 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 48 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 292338 SWOMCD SPC MCD 292338 NCZ000-VAZ000-SCZ000-300045- MESOSCALE DISCUSSION 1321 NWS STORM PREDICTION CENTER NORMAN OK 0638 PM CDT FRI JUN 29 2007 AREAS AFFECTED...CENTRAL/ERN NC AND FAR SERN VA CONCERNING...SEVERE THUNDERSTORM WATCH 463... VALID 292338Z - 300045Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 463 CONTINUES. ISOLATED STRONG WIND GUSTS REMAIN POSSIBLE...MAINLY ACROSS SWRN PART OF WW 463...AND ALONG CONVECTIVE OUTFLOW BOUNDARY EXTENDING FROM ROBESON TO PENDER COUNTIES /ADJACENT TO THE WATCH/ WHERE THE AIR MASS REMAINED MODERATELY UNSTABLE. ALTHOUGH TSTMS SHOULD CONTINUE TO DEVELOP INTO THE EARLY EVENING ALONG THE PRIMARY SYNOPTIC BOUNDARY FROM VA INTO THE SRN APPALACHIANS AND TRACK SEWD TOWARD THE NRN PART OF WW 463...MUCH OF THE AIR MASS OVER NC HAS BEEN CONVECTIVELY OVERTURNED. THUS... EXCEPT FOR THE SWRN AND FAR SRN PART OF WW 463...OVERALL SEVERE WEATHER THREAT SHOULD CONTINUE TO DIMINISH GIVEN STABILIZING AIR MASS AND STRONGER DEEP LAYER SHEAR FORECAST TO REMAIN N OF NC. ..PETERS.. 06/29/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...AKQ...MHX...RAH...ILM...RNK...CAE...GSP... 37087564 36087525 35617503 35107520 34937597 34747655 34387754 34487827 34597944 34748082 35058110 35938111 36188096 36597914 36857777 37007748 37197660
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 12:07 PM EDT | Mesoscale Discussion | SPC | Alexander, Buncombe, Burke, Caldwell, Catawba, Clay and 17 more | 53 min |
| Jun 29, 1:39 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Beaufort, Bertie, Cabarrus, Camden and 54 more | 8 hr |
| Jun 29, 4:00 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bladen, Craven, Cumberland, Duplin, Greene and 17 more | 90 min |
Nearby
Mesoscale Discussions in North Carolina, 2007Mesoscale Discussions in Virginia, 2007Every mesoscale discussion in 2007
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.