Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 62, NWS Wilmington, NC

May 17, 1998Horry County, Marion County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at May 17, 1998, 7:17 PM EDT for Horry County, Marion County, South Carolina. It was in force for 63 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 17, 1998, 7:17 PM EDT (23:17 UTC)
Expired: May 17, 1998, 8:20 PM EDT
In force: 63 min
Issued by: NWS Wilmington, NC
Area: Whole counties

Counties Horry County, SC, Marion County, SC

The radar

The Wilmington radar (KLTX), 68 km from the middle of the area, began a volume at 23:19 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 17, 7:30 PM EDT	Hail 0.75	Mullins, SC
May 17, 8:11 PM EDT	Hail 0.75	Galivants Ferry, 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 17, 6:00 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 11.3 hours before the alert went out and 144 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: 583 J/kg
Mixed-layer CIN: -175 J/kg
Mixed-layer LCL: 1278 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Wilmington, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 17, 1:57 PM EDT, 5 hours 20 minutes earlier.

Area forecast discussion, May 17, 1:57 PM EDT, 5 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
157 PM EDT SUN MAY 17 1998

ZFP: NOT MUCH TIME TO LOOK AT DATA AS TSRA HAVE KEPT ME BUSY. HARD DAY
TO FIGURE WITH 70+ VILS NOT PRODUCING LARGE HAIL BUT OTHER CELLS WITH
VILS IN 50-60 PRODUCING DIME OR LARGER...COULD JUST BE LACK OF REPORTS.
BATCH OF CNVCTN ALONG CST HAS WEAKENED A BIT HOWEVER STILL BELIEVE
AREAS TO W AND S WILL LIGHT UP NEXT SVRL HOURS AS HIGH INSTAB...LOW LVL
CNVRGNCE AND APPROACHING SRT WV INTERACT. FRNT SHLD SLOWLY MOVE OFFHSR
OVERNIGHT AS SRT WV GOES BY BUT MAY BE LATE OR TOWRD MORNING DOWN S.
DRIER AIR WL WORK IN FROM N TO S BEHIND FRNT HOWEVER APPEARS IMD CST AND
SRN SCTNS MAY BE SLOW TO CLEAR AS FRNT LIKELY WONT PUSH VERY FAR OFFSHR.
CAN PROB WORD MSTLY SUNNY N TO PC OR BECOMING MSTLY SUNNY S. QUIET WX
MON NIGHT INTO TUE AS HIGH BUILDS IN...WL HAVE TO WATCH FRNT LOW OFFSHR
AS MAY INFLUENCE CSTL LOCATIONS IF STALLS TOO CLOSE.

CWF: LIGHT MA^INLY S/SW WINDS WL SHFT TO N BEHIND FRNT FROM N TO S OVRNGHT.
STILL COULD BE DECENT SURGE ESPCLY N AS GRDNT TIGHTENS ABIT AND COOLER
DRIER AIR WORKS IN. WNDS SHLD DROP OFF QUICK AS HI GETS CLSR. WL FOLLOW
CRNT TRNDS.

.MHX...NONE.

FREDERICK

In the hours before

Local storm report, May 17, 5:39 PM EDT, 1 hour 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
539 PM EDT SUN MAY 17 1998

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

1200 PM    BAYVIEW                   NC   .75 INCH HAIL
05/17/98   BEAUFORT                       REPORTED AT THE FERRY
                                          DOCKS

1205 PM    BEAUFORT                  NC   1 INCH HAIL
05/17/98   CARTERET                       HAIL REPORTED BETWEEN
                                          BEAUFORT AND OTWAY

0430 PM    CHINQUAPIN                NC   1.25 INCH HAIL
05/17/98   DUPLIN

0440 PM    CHINQUAPIN                NC   WIND DAMAGE
05/17/98r   DUPLIN                         TWO LARGE PINE TREES BLOWN
                                          DOWN

RF

Local storm report, May 17, 5:45 PM EDT, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
545 PM EDT SUN MAY 17 1998

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

0535 PM    ROCKY POINT               NC   .75 INCH HAIL
05/17/98   PENDER                         7 MILES SOUTH OF BURGAW

DRH

Local storm report, May 17, 5:45 PM EDT, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
545 PM EDT SUN MAY 17 1998

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

0535 PM    ROCKY POINT               NC   .75 INCH HAIL
05/17/98   PENDER                         7 MILES SOUTH OF BURGAW

DRH

Local storm report, May 17, 7:09 PM EDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
709 PM EDT SUN MAY 17 1998

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

0700 PM    LAKE WACCAMAW             NC   .75 INCH HAIL
05/17/98   COLUMBUS                       LAKE WACCAMAW AND BOLTON
                                          AREA

Local storm report, May 17, 7:12 PM EDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
712 PM EDT SUN MAY 17 1998

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

0710 PM    LAKE WACCAMAW             NC   .75 INCH HAIL
05/17/98   COLUMBUS

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 17, 3:24 AM EDT	Severe Thunderstorm Warning	ILM	New Hanover	31 min
May 17, 3:58 AM EDT	Severe Thunderstorm Warning	ILM	New Hanover	32 min
May 17, 5:27 PM EDT	Severe Thunderstorm Warning	ILM	New Hanover, Pender	63 min
May 17, 5:48 PM EDT	Severe Thunderstorm Warning	ILM	Bladen	62 min
May 17, 6:03 PM EDT	Severe Thunderstorm Warning	ILM	Brunswick	47 min
May 17, 6:16 PM EDT	Severe Thunderstorm Warning	ILM	Columbus	49 min
May 17, 7:05 PM EDT	Severe Thunderstorm Warning	ILM	Columbus	60 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.