Alert archive / North Carolina / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 228, NWS Greenville-Spartanburg, SC

July 10, 2002Henderson County, Polk County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 10, 2002, 7:43 PM EDT for Henderson County, Polk County, North Carolina. It was in force for 47 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: Jul 10, 2002, 7:43 PM EDT (23:43 UTC)
Expired: Jul 10, 2002, 8:30 PM EDT
In force: 47 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

Counties Henderson County, NC, Polk County, NC

The radar

The Greer radar (KGSP), 48 km from the middle of the area, began a volume at 23:46 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.7 hours before the alert went out and 235 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: 191 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 1417 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 49 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.

824 
WUUS52 KGSP 102343
SVRGSP
NCC089-149-110030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
742 PM EDT WED JUL 10 2002

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HENDERSON COUNTY IN WESTERN NORTH CAROLINA
  SOUTHWESTERN POLK COUNTY IN WESTERN NORTH CAROLINA

* UNTIL 830 PM EDT

* AT 742 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM WITH DAMAGING WINDS OVER HENDERSONVILLE...OR ABOUT 3
  MILES NORTH OF EAST FLAT ROCK...MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  TUXEDO AT 745 PM EDT.
  SALUDA AT 755 PM EDT.
  TRYON AT 810 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.

$$

BPM/NED

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 10, 3:26 PM EDT, 4 hours 17 minutes earlier.

Area forecast discussion, Jul 10, 3:26 PM EDT, 4 hours 17 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
326 PM EDT WED JUL 10 2002

AT 19Z...SYNOPTIC SCALE SFC BNDRY LOOKS TO BE ACRS SRN KY WITH SVRL
SMALLER SCALE BNDRYS LOCATED SE OF THIS FEATURE. TSTMS WILL CONTINUE
TO FORM ALONG THESE AFOREMENTIONED FEATURES THRU THE EVENING. LOOKS
LIKE AN ISOLATED PULSE SVR THREAT WILL CONTINUE THRU EARLY EVENING
AS WE WAIT FOR SYNOPTIC SCALE BNDRY OVER SRN KY ATTM...TO SINK SWD.

SOME DIFFERENCES STILL EXIST WRT TIMING OF THE SOUTHWARD MOVEMENT OF
COLD FRONT ACRS THE CWFA...WITH AVN STILL ABT 6 OR SO HRS LATER WITH
WIND SHIFT & HAVE GENERALLY FOLLOWED THIS SOLUTION. BASED OF CVRG OF
DIURNALLY FIRED DEEP CONVECTION ALONG WITH ADDITIONAL DEVELOPMENT
ALONG LLVL BNDRYS ...PROBABLY CAN GET AWAY WITH LIKELYS EVERYWHERE
FOR THE 12 HR POP FOR TONIGHT...BUT WILL FINE TUNE THIS CLOSER TO
ZFP RELEASE TIME. ALL MDLS STILL IN REASONABLE AGREEMENT WRT TO
LOCATION OF HEAVIEST PCPN...ALONG & EAST OF VORT EMBEDDED IN NW
FLOW...MAINLY EAST OF THE CWFA.

ON THURSDAY...STILL UNCERTAIN ON HOW FAR SW LLVL DRY AIR ADVECTS
IN WAKE OF FRONT...BUT CONSENSUS FCST IS ADVERTISING MOST IF NOT
ALL OF CWFA REMAINING UNDER A CONSIDERABLE AMNT OF LLVL RH THRU
THE DAY...WITH EVEN AVN GENERATING PCPN AS FAR NORTH AS MY NORTHERN
NC TIER. SO PLAN ON KEEPING CHC POPS GOING...WHICH IS IN GOOD
AGREEMENT WITH MRX/RNK ZONES. A SIMILAR DILEMMA ARISES FOR FRIDAY
AS A STRGR NORTHERN STREAM S/WV DIVES SE TOWARD THE CWFA...
DEVELOPING/ENHANCING WAVE ALONG OLD FRONTAL BNDRY.

THE COMBINATION OF LARGE SCALE LIFT OUT AHEAD OF THE UPPER WAVE &
INCREASED LLVL UPGLIDE/UPSLOPE FLOW SHOULD NOTABLY INCREASE PCPN
CVRG ACRS THE REGION. BUT AGAIN...THE DEGREE OF LLVL DRY AIR WEDGED
INTO THE CWFA REMAINS UNCERTAIN...WITH AVN ONCE AGAIN MORE
AGGRESSIVE IN SPREADING PCPN BACK NWD ACRS THE CWFA. WILL CONTINUE
TO FOLLOW THIS TREND WHICH SUPPORTS THE GOING FCST & IS IN GOOD
AGREEMENT WITH ADJACENT ZONES.

LTL CHANGE IN THE SYNOPTIC PATTERN FOR SATURDAY WITH A COMBO
OF UVVS FROM NORTHERN STREAM WAVE & SE LLVL FLOW KEEPING CHC
FOR PCPN GOING CWFA WIDE. UPPER PATTERN ACRS THE SE US WILL
GRADUALLY TRANSITION BACK TO TYPICAL SUMMERTIME REGIME THRU DAYS
4-7 WITH SW FLOW ALOFT GIVING WAY TO BERMUDA HIGH PRESSURE.

FCSTID = 55
GSP   71  83  67  81 /  50  30  30  40
AND   71  85  68  82 /  50  30  30  40
CLT   70  82  66  80 /  50  30  30  30
HKY   68  80  64  79 /  50  20  20  30
AVL   66  78  63  78 /  50  30  30  40

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

In the hours before

Local storm report, Jul 10, 2:10 PM EDT, 5 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
210 PM EDT WED JUL 10 2002

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

205 PM     HARTWELL                  GA   .88 INCH HAIL
07/10/02   HART                           NICKEL SIZED HAIL
                                          REPORTED BY COUNTY 911 ON
                                          SOUTHEAST SIDE OF TOWN.

HANDEL

Local storm report, Jul 10, 5:46 PM EDT, 1 hour 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
546 PM EDT WED JUL 10 2002

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

525 PM     GREENVILLE                SC   WIND DAMAGE
07/10/02   GREENVILLE                     SHERIFFS OFFICE REPORTS
                                          TREES DOWN.

525 PM     GREENVILLE                SC   WIND DAMAGE
07/10/02   GREENVILLE                     SHERIFFS OFFICE REPORTED
                                          POWER LINES DOWN.

535 PM     5 N SIMPSONVILLE          SC   WIND DAMAGE
07/10/02   GREENVILLE                     SPOTTER REPORTED LARGE
                                          TREE LIMBS DOWN.

JAT

Local storm report, Jul 10, 5:53 PM EDT, 1 hour 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
553 PM EDT WED JUL 10 2002

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

512 PM     EASLEY                    SC   WIND DAMAGE
07/10/02   PICKENS                        EOC REPORTED TREES AND
                                          POWERS LINES DOWN.

JAT

Nearby

Severe Thunderstorm Warnings in North 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.