Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 33, NWS Columbia, SC

May 3, 2002Orangeburg County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 3, 2002, 7:57 PM EDT for Orangeburg County, South Carolina. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 3, 2002, 7:57 PM EDT (23:57 UTC)
Expired: May 3, 2002, 8:45 PM EDT
In force: 48 min
Issued by: NWS Columbia, SC
Area: Counties, with a storm outline in the text

County Orangeburg County, SC

The radar

The Columbia radar (KCAE), 79 km from the middle of the area, began a volume at 23:57 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
May 3, 8:30 PM EDT	Hail 1	Branchville, SC	Post Office reported quarter size hail.

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
May 3, 6:00 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 12.0 hours before the alert went out and 80 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: 1445 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 808 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 159 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KCAE 032357
SVRCAE
SCC075-040045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
756 PM EDT FRI MAY 3 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
    EASTERN ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 845 PM EDT.

* AT 755 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES WEST OF BRANCHVILLE..MOVING EAST AT 35
  MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
    BOWMAN.
    HOLLY HILL.

LAT...LON 3338 8098 3320 8095 3325 8022 3348 8025

RCC

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 3, 3:05 AM EDT	Severe Thunderstorm Warning	CAE	Lancaster	25 min
May 3, 6:03 PM EDT	Severe Thunderstorm Warning	CAE	Aiken	42 min
May 3, 6:47 PM EDT	Severe Thunderstorm Warning	CAE	Aiken	43 min
May 3, 7:06 PM EDT	Severe Thunderstorm Warning	CAE	Barnwell	39 min
May 3, 7:32 PM EDT	Tornado Warning	CAE	Barnwell	28 min
May 3, 7:36 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg	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; radar from the NEXRAD Level II archive.