Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 81, NWS Columbia, SC

May 10, 1998Bamberg County, Orangeburg County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 10, 1998, 5:32 PM EDT for Bamberg County, Orangeburg County, South Carolina. It was in force for 43 min. 2 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: May 10, 1998, 5:32 PM EDT (21:32 UTC)
Expired: May 10, 1998, 6:15 PM EDT
In force: 43 min
Issued by: NWS Columbia, SC
Area: Whole counties

Counties Bamberg County, SC, Orangeburg County, SC

What was reported inside it

Time	Report	Where	Remark
May 10, 5:45 PM EDT	Thunderstorm Wind 60	Bamberg, SC	Highway Maintenance Dept reported trees down along SC highway 20 from Bamberg to the Orangeburg county line.
May 10, 5:50 PM EDT	Thunderstorm Wind 60	Cordova, SC	Highway Maintenance Dept reported trees down along SC highway 70 from the Bamberg/Orangeburg county line to Cordova.

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 10, 2:00 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.5 hours before the alert went out and 99 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: 315 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1032 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 138 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 
TTAA00 KCAE 102132 RRA
SVRCAE
SCC009-075-102215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
532 PM EDT SUN MAY 10 1998

THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BAMBERG COUNTY IN SOUTH CAROLINA
  SOUTHERN ORANGEBURG COUNTY IN SOUTH CAROLINA

* UNTIL 615 PM EDT 

* AT 530 PM NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
  A SEVERE THUNDERSTORM IN NORTHERN BAMBERG COUNTY JUST NORTH 
  OF DENMARK. THIS STORM WAS MOVING EAST-SOUTHEAST 30 MPH. THIS 
  STORM WILL PRODUCE LARGE HAIL.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BAMBERG AT 545 PM
  ROWESVILLE AT 600 PM

SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES 
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO 
RAPIDLY CHANGING WEATHER CONDITIONS.

THIS IS A DANGEROUS STORM...TAKE COVER IMMEDIATELY IF YOU ARE IN 
ITS PATH. INTENSE SEVERE THUNDERSTORMS CAN CvAUSE AS MUCH DAMAGE 
AS SOME TORNADOES.

AWP

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.

In the hours before

Local storm report, May 10, 3:56 PM EDT, 1 hour 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
356 PM EDT SUN MAY 10 1998

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

355 PM     NEESES                    SC   1.00 INCH HAIL
05/10/98   ORANGEBURG                     ORANGEBURG COUNTY EOC
                                          REPORTS 1 INCH HAIL NEAR
                                          NEESES.

MOORE

Local storm report, May 10, 4:24 PM EDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
424 PM EDT SUN MAY 10 1998

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

405 PM     5 W ORANGEBURG            SC   WIND DAMAGE
05/10/98   ORANGEBURG                     COUNTY SHERIFF...POWER
                                          LINES DOWN IN BOLENTOWN
                                          AREA

410 PM     2 SW ORANGEBURG           SC   WIND DAMAGE
05/10/98   ORANGEBURG                     COUNTY SHERIFF...TREES
                                          DOWN ON CANNONBRIDGE ROAD

410 PM     15 E ORANGEBURG           SC   1.75 INCH HAIL
05/10/98   ORANGEBURG                     COUNTY SHERIFF...GOLFBALL
                                          SIZE HAIL NEAR SANTEE

420 PM     5 E ORANGEBURG            SC   1.75 INCH HAIL
05/10/98   ORANGEBURG                     COUNTY SHERIFF...GOLFBALL
                                          SIZE HAIL AT JUNCTION OF
                                          HWY 301 AND I-26

MOORE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 3:42 PM EDT	Severe Thunderstorm Warning	CAE	Orangeburg	48 min
May 10, 4:04 PM EDT	Tornado Warning	CAE	Orangeburg	26 min
May 10, 5:13 PM EDT	Severe Thunderstorm Warning	CAE	Sumter	32 min
May 10, 5:23 PM EDT	Tornado Warning	CAE	Sumter	37 min
May 10, 5:36 PM EDT	Tornado Warning	CAE	Clarendon	39 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 1998 Every severe thunderstorm warning in 1998

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.