Alert archive / North Carolina / Mesoscale Discussions in 2004
Mesoscale Discussion 2000
The Storm Prediction Center issued this mesoscale discussion at Aug 14, 2004, 8:37 AM EDT for 46 counties in North Carolina; 11 counties in South Carolina; 33 counties in Virginia. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- Aug 14, 2004, 8:37 AM EDT (12:37 UTC)
- Expired
- Aug 14, 2004, 10:30 AM EDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
All 90 counties
Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Berkeley County, SC, Charleston County, SC, Clarendon County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC, Brunswick County, VA, Charles City County, VA, Chesterfield County, VA, City of Chesapeake, VA, City of Colonial Heights, 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 Suffolk, VA, City of Virginia Beach, VA, City of Williamsburg, VA, Dinwiddie County, VA, Gloucester County, VA, Greensville County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, Mathews County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Prince George County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, York County, VA
The radar
The Morehead City radar (KMHX), 72 km from the middle of the area, began a volume at 12:38 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
Newport, NC (KMHX), launched 12:00Z, 0.6 hours before the alert went out and 72 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
- 1472 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 627 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.0
The text
As transmitted, in the capitals the NWS used until 2016.
814 ACUS11 KWNS 141238 SWOMCD SPC MCD 141237 VAZ000-NCZ000-SCZ000-141430- MESOSCALE DISCUSSION 2000 NWS STORM PREDICTION CENTER NORMAN OK 0737 AM CDT SAT AUG 14 2004 AREAS AFFECTED...ERN SC...ERN NC...SE VA CONCERNING...TORNADO WATCH 752... VALID 141237Z - 141430Z THE TORNADO THREAT WILL CONTINUE AS HURRICANE CHARLEY APPROACHES THE NORTHEAST COAST OF SOUTH CAROLINA OVER THE NEXT FEW HOURS. THE CENTER OF HURRICANE CHARLEY IS CURRENTLY JUST EAST OF CHARLESTON WITH A NNEWD MOVEMENT AT ABOUT 35 MPH. RAINBANDS AHEAD OF THE CENTER ARE SPREADING INLAND ACROSS ERN SC AND ERN NC. THE MHX 12Z SOUNDING SHOWS 1700 J/KG OF MLCAPE WITH 30 TO 35 KT OF DEEP LAYER SHEAR. THIS WILL BE FAVORABLE FOR MINI-SUPERCELLS. STRONG LOW-LEVEL SHEAR...LCL HEIGHTS AROUND 500 METERS AND THE FAST FORWARD SPEED OF THE HURRICANE...WILL BE FAVORABLE FOR TORNADOES WITH SUPERCELLS EMBEDDED IN THE HEAVY RAIN. THE TORNADO THREAT SHOULD CONTINUE THROUGH THE MORNING HOURS AS HURRICANE CHARLEY APPROACHES AND EVENTUALLY MAKES LANDFALL BETWEEN MYRTLE BEACH SC AND WILMINGTON NC. AS FURTHER HEATING OCCURS AND STRONG LOW-LEVEL SHEAR SPREADS NWD... ADDITIONAL WW MAY BE REQUIRED IN THE NEXT HOUR OR TWO NW INTO REMAINDER OF NERN NC...SERN VA AND PSBLY SERN MD. ..BROYLES/EVANS.. 08/14/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...AKQ...MHX...RAH...ILM...CHS...CAE... 36317518 34897598 32657783 32127912 32738040 33498046 35367933 37397758 37787678 37467564 36867507
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 2:05 AM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 10 more | 115 min |
| Aug 14, 3:30 AM EDT | Tornado Watch | SPC | Beaufort, Bladen, Brunswick, Carteret, Columbus, Craven and 25 more | 10 hr |
| Aug 14, 11:30 AM EDT | Tornado Watch | SPC | Beaufort, Bertie, Brunswick, Camden, Carteret, Chowan and 21 more | 10 hr |
| Aug 14, 2:34 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 14 more | 116 min |
| Aug 14, 6:28 PM EDT | Mesoscale Discussion | SPC | Camden, Currituck, Dare, Pasquotank | 92 min |
Nearby
Mesoscale Discussions in North Carolina, 2004Mesoscale Discussions in Virginia, 2004Mesoscale Discussions in South Carolina, 2004Every mesoscale discussion in 2004
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.