Alert archive / South Carolina / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 174

April 17, 200017 counties in North Carolina; 18 counties in South Carolina

The Storm Prediction Center issued this severe thunderstorm watch at Apr 17, 2000, 7:30 PM EDT for 17 counties in North Carolina; 18 counties in South Carolina. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 17, 2000, 7:30 PM EDT (23:30 UTC)
Expired
Apr 18, 2000, 12:00 AM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 35 counties

Anson County, NC, Bladen County, NC, Columbus County, NC, Cumberland County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wayne County, NC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC, Williamsburg County, SC

The radar

The Columbia radar (KCAE), 99 km from the middle of the area, began a volume at 23:29 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.

Warnings issued inside it

25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 17, 7:59 PM EDTSevere Thunderstorm WarningCAELancaster31 min
Apr 17, 8:18 PM EDTSevere Thunderstorm WarningCAELancaster27 min
Apr 17, 8:34 PM EDTSevere Thunderstorm WarningCAERichland26 min
Apr 17, 8:41 PM EDTSevere Thunderstorm WarningRAHAnson34 min
Apr 17, 8:58 PM EDTSevere Thunderstorm WarningGSPUnion47 min
Apr 17, 9:01 PM EDTSevere Thunderstorm WarningILMDarlington, Florence44 min
Apr 17, 9:03 PM EDTSevere Thunderstorm WarningCAEKershaw42 min
Apr 17, 9:15 PM EDTSevere Thunderstorm WarningRAHRichmond30 min
Apr 17, 9:49 PM EDTSevere Thunderstorm WarningRAHMoore31 min
Apr 17, 9:58 PM EDTSevere Thunderstorm WarningCAELee32 min
Apr 17, 10:08 PM EDTSevere Thunderstorm WarningILMDarlington, Marlboro37 min
Apr 17, 10:19 PM EDTSevere Thunderstorm WarningCAEClarendon26 min
Apr 17, 10:31 PM EDTSevere Thunderstorm WarningILMDillon, Florence59 min
Apr 17, 10:32 PM EDTSevere Thunderstorm WarningRAHLee18 min
Apr 17, 10:43 PM EDTSevere Thunderstorm WarningILMDarlington, Marlboro32 min
Apr 17, 10:44 PM EDTSevere Thunderstorm WarningRAHHarnett, Wake46 min
Apr 17, 10:49 PM EDTSevere Thunderstorm WarningCAEClarendon41 min
Apr 17, 11:07 PM EDTSevere Thunderstorm WarningRAHCumberland23 min
Apr 17, 11:16 PM EDTSevere Thunderstorm WarningILMRobeson44 min
Apr 17, 11:16 PM EDTSevere Thunderstorm WarningILMWilliamsburg59 min
Apr 17, 11:27 PM EDTSevere Thunderstorm WarningILMDillon, Florence, Marion48 min
Apr 17, 11:30 PM EDTSevere Thunderstorm WarningILMGeorgetown30 min
Apr 17, 11:35 PM EDTSevere Thunderstorm WarningRAHJohnston30 min
Apr 17, 11:50 PM EDTSevere Thunderstorm WarningILMBladen, Columbus70 min
Apr 17, 11:50 PM EDTSevere Thunderstorm WarningILMGeorgetown70 min

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 11.5 hours before the alert went out and 146 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-pSkew-T log-p diagram, Charleston AFB, SC at 12:00Z on 2000-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 647 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2000-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
647 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
909 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 17, 1:30 PM EDTSevere Thunderstorm WatchSPCAlamance, Alexander, Anson, Burke, Cabarrus, Caldwell and 43 more7 hr

Nearby

Severe Thunderstorm Watches in South Carolina, 2000Severe Thunderstorm Watches in North Carolina, 2000Every severe thunderstorm watch in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.