Alert archive / North Carolina / Mesoscale Discussions in 2004
Mesoscale Discussion 2001
The Storm Prediction Center issued this mesoscale discussion at Aug 14, 2004, 2:34 PM EDT for 20 counties in North Carolina; City of Virginia Beach, Virginia. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Aug 14, 2004, 2:34 PM EDT (18:34 UTC)
- Expired
- Aug 14, 2004, 4:30 PM EDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 21 counties
Beaufort County, NC, Bertie County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Craven County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Hyde County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Perquimans County, NC, Pitt County, NC, Tyrrell County, NC, Washington County, NC, City of Virginia Beach, VA
The radar
The Morehead City radar (KMHX), 56 km from the middle of the area, began a volume at 18:34 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, 6.6 hours before the alert went out and 56 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.
296 ACUS11 KWNS 141835 SWOMCD SPC MCD 141834 NCZ000-VAZ000-142030- MESOSCALE DISCUSSION 2001 NWS STORM PREDICTION CENTER NORMAN OK 0134 PM CDT SAT AUG 14 2004 AREAS AFFECTED...ERN NC / SERN VA CONCERNING...TORNADO WATCH 753... VALID 141834Z - 142030Z THREAT FOR ISOLATED TORNADOES WILL CONTINUE ACROSS ERN NC INTO SERN VA...ALONG AND E OF THE TRACK OF CHARLEY. LATEST RADAR IMAGERY INDICATES THE CENTER OF CHARLEY INVOF OAJ /JACKSONVILLE NC/...MOVING NNEWD AT AROUND 3O TO 35 KT. WIDESPREAD RAINFALL CONTINUES UPSTREAM OF CHARLEY ACROSS NERN NC AND INTO THE CHESAPEAKE BAY AREA...WHICH HAS RESULTED IN A GENERALLY STABLE AIRMASS ACROSS MUCH OF THE REGION. GREATEST TORNADO THREAT OVER THE NEXT COUPLE OF HOURS SHOULD PERSIST ACROSS THE PAMLICO / ALBEMARLE SOUND REGION...WHERE UP TO 500 J/KG MEAN-LAYER CAPE COMBINED WITH MOST FAVORABLE LOW-LEVEL SHEAR MAY SUPPORT SMALL SUPERCELLS. ..GOSS.. 08/14/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...AKQ...MHX...RAH...ILM... 34667822 35967724 36817603 35707550 35257556 34647650 34567716
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, 8:37 AM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 40 more | 113 min |
| Aug 14, 11:30 AM EDT | Tornado Watch | SPC | Beaufort, Bertie, Brunswick, Camden, Carteret, Chowan and 21 more | 10 hr |
| 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, 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.