Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 31, NWS Greenville-Spartanburg, SC

April 28, 2002Abbeville County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 28, 2002, 10:04 PM EDT for Abbeville County, South Carolina. It was in force for 41 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: Apr 28, 2002, 10:04 PM EDT (02:04 UTC)
Expired: Apr 28, 2002, 10:45 PM EDT
In force: 41 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Abbeville County, SC

What was reported inside it

Time	Report	Where	Remark
Apr 28, 10:15 PM EDT	Hail 0.75	Antreville, SC

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 9:00 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.1 hours before the alert went out and 211 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: 1915 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1206 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 7.2

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KGSP 290204
SVRGSP
SCC001-290245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1004 PM EDT SUN APR 28 2002

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ABBEVILLE COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 1045 PM EDT

* AT 1004 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 12 MILES EAST OF
  HARTWELL...OR ABOUT 11 MILES WEST OF ANTREVILLE...MOVING SOUTHEAST
  AT 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ANTREVILLE AT 1010 PM EDT.
  ABBEVILLE AT 1025 PM EDT.

IF THIS SEVERE THUNDERSTORM CONTINUES TO STRENGTHEN...THE WARNING MAY
BE UPGRADED TO A TORNADO WARNING FOR COUNTIES IN THE PATH OF THE
STORM.

$$
MCAVOY/JONES

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 Apr 28, 3:23 PM EDT, 6 hours 41 minutes earlier.

Area forecast discussion, Apr 28, 3:23 PM EDT, 6 hours 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
323 PM EDT SUN APR 28 2002

SUPERCELLULAR DEEP CONVECTION ACRS ERN TENN MOVING TOWARD NC MTNS
ATTM IS THE PRIMARY CONCERN THRU EARLY EARLY EVENING...BUT THIS
IS WELL COVERED WITH WW170 THRU 23Z. POTENTIAL FOR ADDITIONAL
DEEP CONVECTION IS A LITTLE LESS CERTAIN...BUT SYNOPTIC SCALE
FEATURES MENTIONED IN PRELIM DISC STILL LOOK FAVORABLE. WILL KEEP
12 HR 7P-7A POP IN SCATTERED/CHC RANGE FROM 50% W TO 30% E.

WINDS STILL QUITE GUSTY ESP...ACRS THE MTNS/FTHLS...SO WILL HAVE
LWA FOR THE EVENING HOURS.

PRELIM DISC:

AXIS OF HIGH THETA-E AIR & LLVL CONVERGENCE AXIS WILL BE SAGGING SE
INTO THE CWFA THRU THIS EVENING. EVEN THOUGH THE GSP CWFA IS WELL
SOUTH OF THE STRONG UPPER FORCING...THESE AFOREMENTIONED
PARAMETERS...COMBINED WITH A STRONG & DEEP LAYERED VERTICAL WIND
PROFILE & BULLSEYE OF UPPER LVL DIVERGENCE IN LEFT EXIT REGION OF
25H JET...ORGANIZED SVR TSTMS STILL A POSSIBILITY...WHETHER THEY ARE
ASSOCIATED WITH ACTIVITY OUT AHEAD OF APPROACHING COLD FRONT OR
ACTIVATED BY LEE TROUGH. AT THE MOMENT...PLAN ON MENTIONING SVR CHCS
THIS EVENING IN ZFP FOR NC MTNS & MAY EXPAND THIS AREA EASTWARD AS
THE AFTERNOON WEARS ON AS WE GET A BETTER HANDLE ON THINGS...OR
WATCHES DICTATE THIS FOR US.

POST FRONTAL AIRMASS & MIXING WORKS IN FROM WEST TO EAST OVERNIGHT
& IT LOOKS LIKE BL FLOW WILL BE STRONG ENUF FOR FCST OF ONGOING
GRADIENT WINDY CONDITIONS ACRS THE MTNS. THE SAME HOLDS TRUE FOR
MONDAY & WILL CONFINE WINDY WORDING TO MTN ZONES. PRES GRADIENT
LOOSENS IN THE AFTERNOON AS HIGH BLDS EAST THEN SETTLES OVER THE
CWFA MONDAY NIGHT PROMOTING CLEAR AND CALM CONDITIONS. RETURN
FLOW DEVELOPS QUICKLY DURING TUESDAY...BUT AT THIS POINT...WILL
LEAN TOWARD LESS AGGRESSIVE ETA SOLUTION...KEEPING MEASURABLE
PCPN WEST/SW OF CWFA UNTIL TUE NITE.

HEIGHTS ACROSS THE ERN US WILL RISE ON DAY 3 IN RESPONSE TO S/WV
ENERGY HEADING INTO THE NATIONS MID SECTION. AT THE SFC...WARM
FRONT WILL LIFT NORTHWARD ACRS THE CWFA WITH WARM SECTOR WX FOR
THURSDAY...ESPECIALLY WHEN FAVORING FURTHER N ECMWF POSITION OF
SURFACE FRONT ON DAY 4. CONVERSELY...AS S/WV TRANSLATES ACRS THE
EASTERN U.S. ON DAY 5...DRAGGING A COLD FRONT ACRS THE CWFA...TIMING
OF THIS LOOKS TO BE LATER THAN GFS ENSEMBLES...BUT WILL NOT EXTEND
POPS PAST FRIDAY. WITH UPPER RIDGING BUILDING OFF TO OUR WEST THIS
WEEKEND...A PREDOMINATELY DRY NW FLOW WILL RESULT ACRS THE EASTERN
US. MODELS INDICATING SOME ATLANTIC RH RETURNING ON EASTERLY LLVL
FLOW...BUT WILL CONTINUE TO KEEP DAY 6-7 DRY.

FCSTID = 55
GSP   58  79  51  80 /  20   0   0  10
AND   59  80  52  81 /  20   0   0  10
CLT   59  78  50  80 /  20   0   0  10
HKY   56  76  48  78 /  20   0   0  10
AVL   52  73  45  76 /  40   0   0  10

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

In the hours before

Local storm report, Apr 28, 6:36 PM EDT, 3 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
636 PM EDT SUN APR 28 2002

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

628 PM     9 NE MOCKSVILLE           NC   .75 INCH HAIL
04/28/02   DAVIE                          DIME SIZED HAIL NEAR
                                          HILLSDALE COMMUNITY.

633 PM     BULADEAN                  NC   .50 INCH HAIL
04/28/02   MITCHELL                       HALF INCH HAIL REPORTED
                                          BY FIRE DEPARTMENT

MOORE

Local storm report, Apr 28, 6:50 PM EDT, 3 hours 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
650 PM EDT SUN APR 28 2002

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

647 PM     NEWLAND                   NC   .75 INCH HAIL
04/28/02   AVERY                          911 CENTER REPORTED DIME
                                          SIZED HAIL FALLING IN
                                          DOWNTOWN NEWLAND.

BURRUS

Local storm report, Apr 28, 7:04 PM EDT, 3 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
704 PM EDT SUN APR 28 2002

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

655 PM     4 NE NEWLAND              NC   1.00 INCH HAIL
04/28/02   AVERY                          2 SEPERATE REPORTS OF
                                          HAIL AS LARGE AS QUARTERS
                                          FROM THE SAME
                                          AREA...BETWEEN LINVILLE
                                          AND GRANDFATHER MOUNTAIN.
                                          REPORTS FROM TRAINED NWS
                                          SPOTTERS.

BURRUS

Local storm report, Apr 28, 7:20 PM EDT, 2 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
720 PM EDT SUN APR 28 2002

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

700 PM     7 E NEWLAND               NC   1.00 INCH HAIL
04/28/02   AVERY                          REPORTED BY SPOTTER

HANDEL

Local storm report, Apr 28, 9:08 PM EDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
908 PM EDT SUN APR 28 2002

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

906 PM     5 N TOCCOA                GA   1.75 INCH HAIL
04/28/02   STEPHENS                       SKYWARN SPOTTER REPORTED
                                          GOLFBALL-SIZED HAIL ALONG
                                          HIGHWAY 17 ALTERNATE.

BURRUS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 9:01 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	44 min
Apr 28, 9:29 PM EDT	Tornado Warning	GSP	Oconee	31 min
Apr 28, 9:36 PM EDT	Tornado Warning	GSP	Anderson	39 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.