Alert archive / North Carolina / Tornado Watches in 1999

Tornado Watch 147

April 11, 199946 counties in North Carolina

The Storm Prediction Center issued this tornado watch at Apr 11, 1999, 3:30 PM EDT for 46 counties in North Carolina. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 11, 1999, 3:30 PM EDT (19:30 UTC)
Expired
Apr 11, 1999, 9:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 46 counties

Beaufort County, NC, Bertie County, NC, Camden County, NC, Carteret County, NC, Chatham County, NC, Chowan County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pamlico County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Pitt County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 11, 3:59 PM EDTTornado WarningMHXPitt31 min
Apr 11, 4:01 PM EDTTornado WarningMHXLenoir29 min
Apr 11, 4:34 PM EDTTornado WarningMHXCraven41 min
Apr 11, 5:10 PM EDTSevere Thunderstorm WarningRAHSampson45 min
Apr 11, 5:14 PM EDTTornado WarningMHXCraven31 min
Apr 11, 5:27 PM EDTTornado WarningMHXPamlico33 min
Apr 11, 5:36 PM EDTSevere Thunderstorm WarningMHXDuplin39 min
Apr 11, 8:05 PM EDTSevere Thunderstorm WarningRAHSampson35 min
Apr 11, 8:20 PM EDTSevere Thunderstorm WarningRAHWayne35 min
Apr 11, 8:28 PM EDTSevere Thunderstorm WarningMHXMartin27 min
Apr 11, 8:28 PM EDTSevere Thunderstorm WarningMHXDuplin27 min

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 7.5 hours before the alert went out and 139 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 1999-04-11Temperature 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, Newport, NC at 12:00Z on 1999-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 341 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
884 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
341 m²/s²
0-3 km storm-relative helicity
387 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

Tornado Watches in North 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.