Alert archive / South Carolina / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 154, NWS Greenville-Spartanburg, SC

July 24, 1997Greenville County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 24, 1997, 4:39 PM EDT for Greenville County, South Carolina. It was in force for 51 min. 3 reports 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: Jul 24, 1997, 4:39 PM EDT (20:39 UTC)
Expired: Jul 24, 1997, 5:30 PM EDT
In force: 51 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 20:39 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
Jul 24, 4:45 PM EDT	Thunderstorm Wind 50	Taylors, SC
Jul 24, 5:00 PM EDT	Thunderstorm Wind 50	Greenville, SC
Jul 24, 5:10 PM EDT	Thunderstorm Wind 50	Greenville, 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 nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.7 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-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: 1642 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 719 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 54 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 
TTAA00 KGSP 242041 RRA
SVRGSP
SCC045-242130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
439 PM EDT THU JUL 24 1997
 
THE NATIONAL WEATHER SERVICE IN GREENVILLE SPARTANBURG HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  SOUTH CAROLINA
 
   ...GREENVILLE COUNTY
 
AT 440 PM NATIONAL WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM
OVER THE CITY OF GREENVILLE MOVING SOUTHEAST AT ABOUT 10 MPH. THIS
HAS DOWNED TREES IN TAYLORS.
 
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND
DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR
WITH ANY THRUNDERSTORM.
 
RBN
 
&

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 Jul 24, 2:16 PM EDT, 2 hours 23 minutes earlier.

Area forecast discussion, Jul 24, 2:16 PM EDT, 2 hours 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
215 PM EDT THU JUL 24 1997

ALL: GOING TRENDS LOOKS GOOD...SMALL DIRUNAL POPS OK FOR SATURDAY.
RAH: MOSTLY SUNNY BETTER FOR FRIDAY...OTHERWISE LOOKS GOOD.

S/WV & ASSOCIATED WEAK SFC BNDRY MAY STILL BE THE FOCUS FOR TSTMS
TONIGHT ALTHOUGH WILL BE TEMPERED BY SOME SUBSIDENCE & WARM TEMPS
ALOFT.  FOR THE REST OF THE PERIOD...WE'LL SEE A TRANISITION BACK
TO SUBTROPICAL RIDGING INTO THE WEEKEND WITH VERY WARM TEMPS
THROUGHOUT THE COLUMN.  WILL CONTINUE TO HANG ONTO RH IN THE
LOWER LEVELS THOUGH OBVIOUSLY OF A CONSERIDERABLE SHALLOWER DEPTH
WITH TROPICAL SYSTEM OUT OF THE PICTURE.  DIURNAL TSTM COVERAGE
FRI & SAT LATE DAY/EVE WILL RANGE FROM ISLOATED TO WIDELY SCATTERED
...SO WSFOS CAN CARRY TOKEN SMALL POPS EACH DAY IF DESIRED.

GSP  70/92/70/93  2020
AVL  66/86/65/88  2222
CLT  73/91/72/93  2020

CSH

In the hours before

Local storm report, Jul 24, 3:54 PM EDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
354 PM EDT THU JUL 24 1997

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

340 PM     3 NW INMAN                SC   WIND DAMAGE
07/24/97   SPARTANBURG                    INMAN POLICE REPORT TREES
                                          AND POWER LINES DOWN IN
                                          INMAN.

DEO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 3:28 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	47 min
Jul 24, 4:55 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg, Union	50 min
Jul 24, 5:34 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	56 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 1997 Every severe thunderstorm warning in 1997

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.