Alert archive / South Carolina / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 48

March 4, 20019 counties in South Carolina

The Storm Prediction Center issued this severe thunderstorm watch at Mar 4, 2001, 12:30 AM EST for 9 counties in South Carolina. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Mar 4, 2001, 12:30 AM EST (05:30 UTC)
Expired
Mar 4, 2001, 3:00 AM EST
In force
3 hr
Issued by
the Storm Prediction Center

Counties Allendale County, SC, Bamberg County, SC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 44 km from the middle of the area, began a volume at 05:30 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

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

IssuedProductOfficeCountiesLasted
Mar 4, 1:11 AM ESTSevere Thunderstorm WarningCHSColleton64 min
Mar 4, 1:15 AM ESTSevere Thunderstorm WarningCHSJasper45 min
Mar 4, 1:15 AM ESTSevere Thunderstorm WarningCHSAllendale, Hampton45 min
Mar 4, 1:19 AM ESTSevere Thunderstorm WarningCAEBamberg26 min
Mar 4, 1:51 AM ESTSevere Thunderstorm WarningCHSBerkeley, Dorchester54 min

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 5.5 hours before the alert went out and 63 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 00:00Z on 2001-03-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2001-03-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
911 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
176 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.

Nearby

Severe Thunderstorm Watches in South Carolina, 2001Every severe thunderstorm watch in 2001

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.