Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 80, NWS Columbia, SC

May 10, 1998Sumter County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 10, 1998, 5:13 PM EDT for Sumter County, South Carolina. It was in force for 32 min. 1 report 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, 5:13 PM EDT (21:13 UTC)
Expired: May 10, 1998, 5:45 PM EDT
In force: 32 min
Issued by: NWS Columbia, SC
Area: Whole counties

County Sumter County, SC

What was reported inside it

Time	Report	Where	Remark
May 10, 5:28 PM EDT	Tornado F0	Pinewood, SC	An F0 briefly touched down and took some tress down around Panola and Avin roads.

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

Charleston AFB, SC (KCHS), launched 12:00Z, 9.2 hours before the alert went out and 118 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 102113 RRA
SVRCAE
SCC085-102145-

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

THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN SUMTER COUNTY IN SOUTH CAROLINA

* UNTIL 545 PM EDT 

* AT 510 PM NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE 
  THUNDERSTORM MOVING INTO SOUTHERN SUMTER COUNTY. THE STORM 
  WAS MOVING EAST-SOUTHEAST AT 25 MPH. THIS STORM IS LIKELY 
  PRODUCING DAMAGING WINDS AND LARGE HAIL.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PINEWOOD AT 530 PM

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

YOU SHOULD TRY TO PUT AS MANY WALLS BETWEEN YOURSELF AND THE OUTDOORS 
AS POSSIBLE IF YOU ARE IN THE PATH OF THIS STORM.  A SMALL INTERIOR 
ROOM ON THE LOWEST FLOOR USUALLY OFFERS THE BBEST PROTECTION.

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 17 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, 49 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, 5:23 PM EDT	Tornado Warning	CAE	Sumter	37 min
May 10, 5:32 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Orangeburg	43 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.