Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 74, NWS Charleston, SC

May 4, 1998Charleston County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at May 4, 1998, 4:12 PM EDT for Charleston County, South Carolina. It was in force for 63 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 4, 1998, 4:12 PM EDT (20:12 UTC)
Expired: May 4, 1998, 5:15 PM EDT
In force: 63 min
Issued by: NWS Charleston, SC
Area: Whole counties

County Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 103 km from the middle of the area, began a volume at 20:16 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 4, 4:14 PM EDT	Hail 1.75	North Charleston, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 4, 12:45 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.2 hours before the alert went out and 18 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1443 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 11 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 KCHS 042012 RRA
SVRCHS
SCC019-042115-

BULLETIN...IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
412 PM EDT MON MAY 4 1998

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHARLESTON COUNTY IN SOUTH CAROLINA

* UNTIL 515 PM EDT

* AT 410 PM EDT...SPOTTERS INDICATED A SEVERE THUNDERSTORM IN NORTH
  CHARLESTON... MOVING EAST AT 20 MPH. THIS STORM HAS PRODUCED HAIL
  IN EX|CESS OF 1 INCH IN DIAMETER

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NORTH CHARLESTON THROUGH 430 PM EDT

THIS IS A DANGEROUS STORM! STAY INDOORS AWAY FROM WINDOWS.

TJR


&

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 Charleston, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 4, 1:45 PM EDT, 2 hours 27 minutes earlier.

Area forecast discussion, May 4, 1:45 PM EDT, 2 hours 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
145 PM EDT MON MAY 4 1998

WITH SEVERE WX ACTIVITY AGAIN THIS AFTN WL LEAVE FINE DETAILS OF FCST
TO NWSFOS. GENERALLY WL SEE DRY TRANQUIL WX RETURN THRU NEXT 2 DAYS.
SEVERE THREAT WL BE PRIMARILY NEXT FEW HRS 2-6 PM.

LAVIS

In the hours before

Local storm report, May 4, 2:48 PM EDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
248 PM EDT MON MAY 04 1998

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

0210 PM    SUMMERVILLE               SC   .75 INCH HAIL
05/04/98   DORCHESTER                     DIME HAIL NR OLD
                                          ORANGEBURG RD. DISPATCH
                                          REPORT

Local storm report, May 4, 2:57 PM EDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
257 PM EDT MON MAY 04 1998

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

0225 PM    ELLABELL                  GA   1 INCH HAIL
05/04/98   BRYAN                          QUARTER SIZE HAIL DISPATCH
                                          REPORT

Local storm report, May 4, 3:09 PM EDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
309 PM EDT MON MAY 04 1998

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

0305 PM    JAMESTOWN                 SC   1.75 INCH HAIL
05/04/98   BERKELEY                       GOLF BALL HAIL. PUBLIC
                                          REPORT

Local storm report, May 4, 3:13 PM EDT, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
313 PM EDT MON MAY 04 1998

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

0155 PM    8 N DONALD                GA   .75 INCH HAIL
05/04/98   LONG                           NEAR RYE PATCH AND HWY
                                          301. DISPATCH REPORT

Local storm report, May 4, 3:18 PM EDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
318 PM EDT MON MAY 04 1998

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

0314 PM    LADSON                    SC   1 INCH HAIL
05/04/98   DORCHESTER                     QUARTER HAIL. DISPATCH
                                          REPORT

Local storm report, May 4, 3:47 PM EDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
347 PM EDT MON MAY 04 1998

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

0345 PM    NORTH CHARLESTON          SC   .75 INCH HAIL
05/04/98   CHARLESTON                     DIME HAIL SPOTTER REPORT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 11:36 PM EDT	Severe Thunderstorm Warning	CHS	Jasper	59 min
May 3, 11:36 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort	59 min
May 4, 12:34 AM EDT	Severe Thunderstorm Warning	CHS	Charleston, Colleton	61 min
May 4, 1:23 PM EDT	Severe Thunderstorm Warning	CHS	Allendale	32 min
May 4, 1:48 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	47 min
May 4, 2:03 PM EDT	Severe Thunderstorm Warning	CHS	Dorchester	47 min
May 4, 2:51 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	49 min
May 4, 3:02 PM EDT	Severe Thunderstorm Warning	CHS	Colleton	33 min
May 4, 3:05 PM EDT	Severe Thunderstorm Warning	CHS	Dorchester	50 min
May 4, 3:29 PM EDT	Severe Thunderstorm Warning	CHS	Charleston	46 min
May 4, 3:41 PM EDT	Tornado Warning	CHS	Charleston	34 min
May 4, 3:53 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	62 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; radar from the NEXRAD Level II archive.