Alert archive / North Carolina / Mesoscale Discussions in 2003
Mesoscale Discussion 1002
The Storm Prediction Center issued this mesoscale discussion at May 15, 2003, 6:06 PM EDT for 4 states. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- May 15, 2003, 6:06 PM EDT (22:06 UTC)
- Expired
- May 15, 2003, 7:30 PM EDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 65 counties
Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Madison County, GA, Oglethorpe County, GA, Rabun County, GA, Stephens County, GA, Alexander County, NC, Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Stanly County, NC, Swain County, NC, Transylvania County, NC, Union County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Saluda County, SC, Spartanburg County, SC, Union County, SC, York County, SC, Carter County, TN, Cocke County, TN, Greene County, TN, Hamblen County, TN, Jefferson County, TN, Sevier County, TN, Unicoi County, TN, Washington County, TN
The radar
The Greer radar (KGSP), 27 km from the middle of the area, began a volume at 22:05 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, 10.1 hours before the alert went out and 222 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
- 900 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
719 ACUS11 KWNS 152206 SWOMCD SPC MCD 152206 SCZ000-NCZ000-TNZ000-GAZ000-152330- MESOSCALE DISCUSSION 1002 NWS STORM PREDICTION CENTER NORMAN OK 0506 PM CDT THU MAY 15 2003 AREAS AFFECTED...FAR ERN TN...WRN/CENTRAL NC/SC AND FAR NERN GA CONCERNING...SEVERE THUNDERSTORM WATCH 381... VALID 152206Z - 152330Z CLUSTER OF SEVERE THUNDERSTORMS INCLUDING A FEW SUPERCELLS CONTINUES TO TRACK ESEWD ACROSS WW 381. THE SUPERCELL THAT HAS HAD REPORTS OF A TORNADO OVER WRN PORTIONS OF 381 /IN THE KNOXVILLE AREA/ HAS RECENTLY WEAKENED...AND WILL LIKELY NOT POSE A THREAT FOR TORNADOES AS IT ENCOUNTERS INCREASINGLY HOSTILE LOW LEVEL SHEAR ENVIRONMENT OVER THE SRN APPALACHIAN MTNS. ADDITIONAL SEVERE THUNDERSTORMS TO THE SOUTH OF KNOXVILLE WILL MOVE SEWD FROM FAR SERN TN INTO SWRN NC...AND FROM SWRN NC INTO FAR NRN SC /OUT OF WW 381/ IN THE NEXT 1-2 HOURS. VISIBLE SAT IMAGERY SHOWS CONTINUED CLEARING OVER NRN/CENTRAL SC. THUS A FAVORABLE ENVIRONMENT FOR A CONTINUED SEVERE THREAT SHOULD EXIST FOR SEVERAL HOURS SOUTH OF WW 381...WITH THE NEED FOR A NEW WW POSSIBLE IN THIS AREA IF CONVECTION CONTINUES TO MAINTAIN IT/S PRESENT INTENSITY. ..CROSBIE.. 05/15/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...RAH...RNK...CAE...GSP...MRX...FFC... 34938373 33818311 34098064 34758010 35258019 36538074 36188386
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 7:39 PM EDT | Mesoscale Discussion | SPC | Habersham, Rabun, Stephens | 2 hr |
| May 15, 12:08 PM EDT | Mesoscale Discussion | SPC | Alexander, Alleghany, Ashe, Avery, Caldwell, Caswell and 9 more | 2 hr |
| May 15, 4:10 PM EDT | Severe Thunderstorm Watch | SPC | Alexander, Alleghany, Ashe, Avery, Buncombe, Burke and 24 more | 6 hr |
| May 14, 11:10 PM EDT | Mesoscale Discussion | SPC | Dyer, Lake, Obion | 2 hr |
| May 15, 7:52 AM EDT | Mesoscale Discussion | SPC | Campbell, Clay, Fentress, Henry, Macon, Montgomery and 6 more | 2 hr |
| May 15, 1:22 PM EDT | Mesoscale Discussion | SPC | Anderson, Campbell, Claiborne, Clay, Fentress, Grainger and 15 more | 53 min |
| May 15, 1:50 PM EDT | Severe Thunderstorm Watch | SPC | Anderson, Campbell, Claiborne, Clay, Cumberland, Fentress and 13 more | 5 hr |
| May 15, 3:20 PM EDT | Mesoscale Discussion | SPC | Anderson, Campbell, Claiborne, Clay, Cumberland, DeKalb and 23 more | 85 min |
| May 15, 5:42 PM EDT | Mesoscale Discussion | SPC | Anderson, Bedford, Benton, Bledsoe, Bradley, Cannon and 41 more | 63 min |
| May 15, 6:10 PM EDT | Severe Thunderstorm Watch | SPC | Anderson, Bledsoe, Blount, Campbell, Cannon, Cheatham and 36 more | 6 hr |
Nearby
Mesoscale Discussions in North Carolina, 2003Mesoscale Discussions in South Carolina, 2003Mesoscale Discussions in Georgia, 2003Every mesoscale discussion in 2003
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.