Alert archive / South Carolina / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 28, NWS Greenville-Spartanburg, SC

May 28, 2001Greenville County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 28, 2001, 4:14 AM EDT for Greenville County, South Carolina. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 28, 2001, 4:14 AM EDT (08:14 UTC)
Expired
May 28, 2001, 4:45 AM EDT
In force
31 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County Greenville County, SC

The radar

The Greer radar (KGSP), 14 km from the middle of the area, began a volume at 08:17 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 8.2 hours before the alert went out and 259 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 00:00Z on 2001-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 579 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2001-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.19395878Sfc1 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
579 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1577 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KGSP 280816 CCA
SVRGSP
SCC007-045-280845-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
414 AM EDT MON MAY 28 2001

CORRECTED TO REMOVE ANDERSON COUNTY

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN GREENVILLE COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 445 AM EDT

* AT 414 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM 14 MILES EAST OF ANDERSON...OR ABOUT 6 MILES EAST OF
  BELTON...MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SIMPSONVILLE AT 425 AM EDT
  FOUNTAIN INN AT 430 AM 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.

$$

DELGADO

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 May 28, 3:20 AM EDT, 54 minutes earlier.

Area forecast discussion, May 28, 3:20 AM EDT, 54 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
320 AM EDT MON MAY 28 2001

GOING ZFP GENERALLY ON TRACK AS COMBINATION OF LLVL THETA-E ADVECTION
...DIVERGENCE IN RIGHT ENTRANCE REGION OF UPPER JET & DEEP LAYER
OMEGA UPLIFT RESULT IN CONTINUED EASTWARD EXPANSION OF PCPN ACRS
THE CWFA TODAY. GOING LIKELY POPS STILL LOOK GOOD...MAY EVEN GO
HIGHER ACRS SOUTHWESTERN SECTIONS IF RADAR TRENDS CONTINUE.

WEAK SFC FRONT STILL PROGGED TO DROP SOUTHWARD THROUGH THE CWFA
TONIGHT...& MAINLY EVENING CHC POPS WARRANTED BASED ON BETTER
LOOKING ETA/NGM QPF FIELDS.

DRIER CONTINENTAL AIRMASS TO WORK INTO THE SOUTHEAST U.S. ON
NORTHWEST FLOW TUESDAY. 00Z AVN SUPPORTS GOING EXTENDED FCST
IN DEVELOPING PCPN IN RETURN FLOW THURSDAY AFTERNOON AND INTO
FRIDAY.

FCSTID = 55
GSP   80  60  83  58 /  60  50  10  10
AND   80  60  83  58 /  60  50  10  10
CLT   80  60  83  59 /  60  50  10  10
HKY   80Z  57  80  57 /  60  40  10  10
AVL   76  52  76  53 /  60  50  10  10

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

Nearby

Severe Thunderstorm Warnings in South Carolina, 2001Every severe thunderstorm warning in 2001

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.