Alert archive / North Carolina / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 442

June 11, 200426 counties in North Carolina

The Storm Prediction Center issued this severe thunderstorm watch at Jun 11, 2004, 8:25 PM EDT for 26 counties in North Carolina. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jun 11, 2004, 8:25 PM EDT (00:25 UTC)
Expired
Jun 11, 2004, 11:00 PM EDT
In force
3 hr
Issued by
the Storm Prediction Center
All 26 counties

Alamance County, NC, Bertie County, NC, Camden County, NC, Chatham County, NC, Chowan County, NC, Currituck County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Halifax County, NC, Hertford County, NC, Martin County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Tyrrell County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wilson County, NC

The radar

The Raleigh/Durham radar (KRAX), 53 km from the middle of the area, began a volume at 00:25 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

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

IssuedProductOfficeCountiesLasted
Jun 11, 8:36 PM EDTSevere Thunderstorm WarningRAHGranville34 min
Jun 11, 8:48 PM EDTSevere Thunderstorm WarningRAHWarren42 min
Jun 11, 8:53 PM EDTSevere Thunderstorm WarningRAHDurham, Wake37 min
Jun 11, 9:02 PM EDTSevere Thunderstorm WarningAKQHertford28 min
Jun 11, 9:06 PM EDTSevere Thunderstorm WarningAKQNorthampton24 min
Jun 11, 9:09 PM EDTSevere Thunderstorm WarningRAHChatham26 min
Jun 11, 9:09 PM EDTSevere Thunderstorm WarningRAHHalifax31 min
Jun 11, 9:24 PM EDTTornado WarningAKQHertford21 min
Jun 11, 9:26 PM EDTSevere Thunderstorm WarningRAHWake14 min
Jun 11, 9:30 PM EDTSevere Thunderstorm WarningAKQNorthampton30 min
Jun 11, 9:43 PM EDTTornado WarningAKQBertie, Chowan32 min
Jun 11, 10:01 PM EDTSevere Thunderstorm WarningAKQHertford29 min
Jun 11, 10:14 PM EDTSevere Thunderstorm WarningAKQChowan31 min
Jun 11, 10:29 PM EDTSevere Thunderstorm WarningRAHEdgecombe21 min
Jun 11, 10:42 PM EDTTornado WarningMHXTyrrell63 min
Jun 11, 10:47 PM EDTSevere Thunderstorm WarningMHXMartin43 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.4 hours before the alert went out and 163 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, Greensboro/Hi Pt, NC at 00:00Z on 2004-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 682 joules per kilogram.LCLEL10008507005003002001001 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, Greensboro/Hi Pt, NC at 00:00Z on 2004-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.193958Sfc1 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
682 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1787 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 9:56 PM EDTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Chatham, Chowan, Craven and 26 more94 min
Jun 12, 2:18 PM EDTMesoscale DiscussionSPCHenderson, Jackson, Macon, Polk, Transylvania117 min
Jun 12, 2:35 PM EDTSevere Thunderstorm WatchSPCCherokee, Clay, Graham5 hr
Jun 12, 4:14 PM EDTMesoscale DiscussionSPCCherokee, Clay, Graham2 hr

Nearby

Severe Thunderstorm Watches in North Carolina, 2004Every severe thunderstorm watch in 2004

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.