Alert archive / North Carolina / Tornado Watches in 1999

Tornado Watch 161

April 15, 199929 counties in North Carolina; Dillon County, Horry County, Marion County, South Carolina

The Storm Prediction Center issued this tornado watch at Apr 15, 1999, 10:00 PM EDT for 29 counties in North Carolina; Dillon County, Horry County, Marion County, South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Apr 15, 1999, 10:00 PM EDT (02:00 UTC)
Expired
Apr 16, 1999, 12:00 AM EDT
In force
2 hr
Issued by
the Storm Prediction Center
All 32 counties

Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Greene County, NC, Hyde County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, New Hanover County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Dillon County, SC, Horry County, SC, Marion County, SC

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 15, 10:16 PM EDTSevere Thunderstorm WarningMHXOnslow44 min
Apr 15, 10:28 PM EDTTornado WarningMHXCraven32 min
Apr 15, 10:39 PM EDTTornado WarningMHXCarteret51 min
Apr 15, 10:59 PM EDTSevere Thunderstorm WarningMHXPamlico46 min
Apr 15, 11:20 PM EDTSevere Thunderstorm WarningMHXBeaufort45 min

The nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 2.0 hours before the alert went out and 94 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 00:00Z on 1999-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 464 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 00:00Z on 1999-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 260 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
464 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
610 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
260 m²/s²
0-3 km storm-relative helicity
492 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.7

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

Tornado Watches in North Carolina, 1999Tornado Watches in South Carolina, 1999Every tornado watch in 1999

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.