Alert archive / South Carolina / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 67
The Storm Prediction Center issued this severe thunderstorm watch at Mar 4, 2000, 11:45 AM EST for Brunswick County, Columbus County, Pender County, North Carolina; 17 counties in South Carolina. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 4, 2000, 11:45 AM EST (16:45 UTC)
- Expired
- Mar 4, 2000, 5:00 PM EST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Brunswick County, NC, Columbus County, NC, Pender County, NC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Kershaw County, SC, Lee County, SC, Marion County, SC, Orangeburg County, SC, Sumter County, SC, Williamsburg County, SC
The radar
The Columbia radar (KCAE), 139 km from the middle of the area, began a volume at 16:44 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.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 4.8 hours before the alert went out and 56 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.
- Mixed-layer CAPE
- 606 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 508 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.4
The text
As transmitted, in the capitals the NWS used until 2016.
709 WWUS9 KMKC 041621 SEL7 SEL7 MKC WW 041621 NCZ000-SCZ000-CWZ000-042200- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 67 STORM PREDICTION CENTER NORMAN OK 1121 AM EST SAT MAR 4 2000 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHEAST NORTH CAROLINA EASTERN SOUTH CAROLINA COASTAL WATERS EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1145 AM UNTIL 500 PM EST. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTHEAST OF CHARLESTON SOUTH CAROLINA TO 35 MILES NORTHEAST OF FLORENCE SOUTH CAROLINA. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DISCUSSION...STRONG UPPER LOW MOVING INTO SC WITH SURFACE LOW NOW CAE MOVING TO COAST BY 21Z. FAVORABLE AIRMASS AND WIND PROFILES IN ADVANCE OF SURFACE LOW FOR SEVERE THUNDERSTORMS. INTENSIFYING STORMS VICINITY CAE EXPECTED TO DEVELOP E AND SEWD WITH LARGE HAIL PRIMARY THREAT WITH LOW WET BULB ZERO LEVELS. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 24030. ...HALES 343,0775 323,0781 323,0810 343,0804
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.