Alert archive / North Carolina / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 699

August 18, 20006 counties in North Carolina

The Storm Prediction Center issued this severe thunderstorm watch at Aug 18, 2000, 6:15 PM EDT for 6 counties in North Carolina. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Aug 18, 2000, 6:15 PM EDT (22:15 UTC)
Expired
Aug 18, 2000, 11:00 PM EDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Bladen County, NC, Brunswick County, NC, Columbus County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Aug 18, 6:28 PM EDTSevere Thunderstorm WarningILMBladen62 min
Aug 18, 6:51 PM EDTSevere Thunderstorm WarningILMColumbus54 min
Aug 18, 7:14 PM EDTSevere Thunderstorm WarningILMPender61 min
Aug 18, 7:55 PM EDTSevere Thunderstorm WarningMHXOnslow35 min

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 10.3 hours before the alert went out and 134 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, Newport, NC at 12:00Z on 2000-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 230 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, Newport, NC at 12:00Z on 2000-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.1939Sfc1 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
230 J/kg
Mixed-layer CIN
-120 J/kg
Mixed-layer LCL
1055 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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
Aug 18, 2:00 PM EDTSevere Thunderstorm WatchSPCAnson, Cabarrus, Cleveland, Davidson, Gaston, Lincoln and 8 more6 hr
Aug 18, 3:45 PM EDTSevere Thunderstorm WatchSPCAlamance, Bladen, Chatham, Cumberland, Duplin, Durham and 17 more6 hr
Aug 18, 6:00 PM EDTSevere Thunderstorm WatchSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 14 more5 hr

Nearby

Severe 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.