Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 147, NWS Greenville-Spartanburg, SC

June 29, 2002Anderson County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 29, 2002, 6:20 PM EDT for Anderson County, South Carolina. It was in force for 40 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 29, 2002, 6:20 PM EDT (22:20 UTC)
Expired: Jun 29, 2002, 7:00 PM EDT
In force: 40 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Anderson County, SC

The radar

The Greer radar (KGSP), 56 km from the middle of the area, began a volume at 22:19 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.

What was reported inside it

Time	Report	Where	Remark
Jun 29, 6:29 PM EDT	Thunderstorm Wind 50 E	Belton, SC	Some powerlines were blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.3 hours before the alert went out and 214 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 391 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 933 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -41 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 292220
SVRGSP
SCC007-292300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
620 PM EDT SAT JUN 29 2002

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ANDERSON COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 700 PM EDT

* AT 618 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 16 MILES EAST OF
  ANDERSON...OR ABOUT 5 MILES NORTH OF HONEA PATH...MOVING SOUTHWEST
  AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HONEA PATH AT 635 PM EDT.
  BELTON AT 650 PM EDT.

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH ARE LIKELY WITH 
THIS STORM. 

PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR 
LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND TORRENTIAL 
RAIN CAN ALSO BE EXPECTED WITH THIS THUNDERSTORM.

$$

LANE

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 Jun 29, 3:23 PM EDT, 2 hours 57 minutes earlier.

Area forecast discussion, Jun 29, 3:23 PM EDT, 2 hours 57 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
323 PM EDT SAT JUN 29 2002

RUNNING LATE AFTER BRIEF IFPS HICCUP...SO WILL KEEP THIS SHORT.
FOCUS OF CONVECTION NEXT FEW DAYS WILL REMAIN THE TROF THAT
IS NEARLY STATIONARY CLOSE TO OUR SOUTHERN BORDER COUNTIES...WITH
VERY LITTLE IN THE WAY OF UPPER TRIGGERS. WILL RELY MOSTLY ON
DAYTIME HEATING AND UPSLOPE...WHICH ALL MODELS DEVELOP BY LATE
SUNDAY...TO GET CONVECTION GOING IN THE AFTERNOON. ALL THREE SHORT
RANGE MODELS...INCLUDING THE NGM...HAVE A MOIST LAYER BELOW 800
MB...BUT ARE RELATIVELY DRY ALOFT. ALSO WEAK CAP ON FORECAST
SOUNDINGS...BUT HEATING MAY STILL ALLOW FOR CONVECTION IN AFTERNOON.
WILL GIVE POPS SUNDAY AND MONDAY TO ALL BUT OUR NORTHEAST CORNER
COUNTIES. TEMPERATURES GENERALLY 60 TO 65 MOUNTAINS...AND 65 TO 70
FOOTHILLS/PIEDMONT AT NITE AND 80 TO 85 NC MOUNTAINS...TO UPPER
80S/LOWER 90S ELSEWHERE.

NOT MUCH CHANGE TO UPPER PATTERN THROUGH LATE WEEK...WHEN NEXT COLD
FRONT ATTEMPTS TO DROP INTO THE REGION. WILL INCLUDE CHANCE OF
SHOWERS/THUNDERSTORMS THURSDAY AND FRIDAY...DRY SATURDAY.
TEMPEARTURES AT OR SLIGHTLY ABOVE NORMAL THROUGH PERIOD.

FCSTID = 44
GSP   70  90  69  89 /  20  30  20  30
AND   70  91  69  90 /  20  30  20  30
CLT   69  90  68  89 /  20  20  20  30
HKY   68  88  66  87 /  10  20  20  20
AVL   63  85  63  84 /  20  30  20  30

.GSP...
GA...NONE.
NC...NONE.
SC...NONE.

BURRUS

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 5:44 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	31 min
Jun 29, 5:59 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	46 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.