Alert archive / North Carolina / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 341, NWS Greenville-Spartanburg, SC

August 8, 2003Transylvania County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 8, 2003, 2:21 PM EDT for Transylvania County, North Carolina. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 8, 2003, 2:21 PM EDT (18:21 UTC)
Expired
Aug 8, 2003, 3:15 PM EDT
In force
54 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Counties, with a storm outline in the text

County Transylvania County, NC

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.4 hours before the alert went out and 266 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.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2003-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 145 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2003-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
145 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS52 KGSP 081821
SVRGSP
NCC175-081915-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
221 PM EDT FRI AUG 8 2003

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TRANSYLVANIA COUNTY IN WESTERN NORTH CAROLINA

* UNTIL 315 PM EDT

* AT 221 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM OVER BREVARD...MOVING EAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LITTLE RIVER AT 245 PM EDT.

PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR
LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY
RAIN CAN OCCUR WITH ANY THUNDERSTORM.

LAT...LON 3534 8274 3534 8265 3526 8260 3514 8258
          3513 8281 3522 8282 3532 8286

$$
RB

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 10:49 AM EDT, 3 hours 32 minutes earlier.

Area forecast discussion, Aug 8, 10:49 AM EDT, 3 hours 32 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1049 AM EDT FRI AUG 8 2003

LATE MORNING UPDATE IS ONLY FOR THE PURPOSE OF CLEANING OUT
THE MORNING WORDING INCLUDING MENTION OF FOG. ALSO FOUND MINOR
HIGH TEMP ERROR IN GREENVILLE MOUNTAIN GROUP. NO OTHER CHANGES
TO PREVIOUS FORECAST.

----------------------------
PREVIOUS DISCUSSION...

MINIMAL CHANGE TO THE LARGE SCALE PATTERN THRU TONIGHT WITH L/WV
AXIS REMAINING WEST OF THE CWFA. EMBEDDED WITHIN MEAN FLOW...
S/WV BEGINNING TO WORK UP FRONT SIDE OF TROUGH ATTM AS PER WV
IMAGERY & 00Z ETA SEEMED TO HAVE A GOOD HANDLE ON THIS
FEATURE...CONTINUING TO TRANSLATE IT & BEST PCPN ENE OF CWFA BY 12Z.
SO...PLAN ON JUST CHC POPS FOR THE MORNING...INCREASING TO LIKELY AS
TSTM CVRG SHOULD INCREASE FROM WEST TO EAST DURING THE AFTERNOON
WITHIN MOISTURE RICH ENVIRONMENT.

HAVE DECIDED TO EXTEND GOING FFA THRU TONIGHT BASED ON THIS AREA
RECEIVING HIGHEST RNFL AMTS OVER PAST FEW DAYS AND IS CLOSER TO
HIGHER MEAN RH LEVELS...NOT TO MENTION ETA RESPONSE IN DEVELOPING
WIDESPREAD DEEP CONVECTION IN THIS AREA AGAIN LATE TODAY AND THIS
EVENING.

THEN PRETTY MUCH A PERSISTENCE FCST THRU THE WEEKEND AS L/WV
TROUGH AXIS IS STILL LOCATED JUST UPSTREAM OF THE CWFA AT 96 HOURS.
CONSENSUS FCST IS FOR A SLIGHT DRYING OF MEAN RH LEVELS AS WELL...
SO LIKELY POPS FOR TONIGHT EVENTUALLY MIGRATE TO JUST DAILY CHC.

.GSP...
GA...NONE.
NC...FLOOD WATCH THRU TONIGHT NCZ033>037-048>050-053>057-065>072-082.
SC...FLOOD WATCH THRU TONIGHT SCZ003-006>009-012>014.

OUTLAW/BURRUS/BRUCE
Hazardous weather outlook, Aug 8, 6:12 AM EDT, 8 hours 9 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-081215-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
612 AM EDT FRI AUG 8 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA...
UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA.

.DAY ONE...

AREAS OF MORNING FOG WILL GIVE WAY TO MIXED SUN AND CLOUDS LATER
THIS MORNING WITH INCREASING CHANCES FOR THUNDERSTORMS AS THE
AFTERNOON WEARS ON. LOCALIZED EXCESSIVE RAINFALL AND ISOLATED
SEVERE WEATHER IS POSSIBLE THROUGH TONIGHT. FOR FURTHER
INFORMATION...PLEASE REFER TO THE LATEST FLOOD WATCH...FFAGSP...
AND SEVERE WEATHER OUTLOOK...SPSGSP...ISSUED BY THIS OFFICE.

.DAYS TWO THROUGH SEVEN...

A DAILY CHANCE OF THUNDERSTORMS WILL CONTINUE THROUGH THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

Nearby

Severe Thunderstorm Warnings in North Carolina, 2003Every severe thunderstorm warning 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.