Alert archive / North Carolina / Severe Thunderstorm Watches in 2006

Severe Thunderstorm Watch 237

April 22, 200649 counties in North Carolina; 8 counties in South Carolina; 18 counties in Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Apr 22, 2006, 10:29 AM EDT for 49 counties in North Carolina; 8 counties in South Carolina; 18 counties in Virginia. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Apr 22, 2006, 10:29 AM EDT (14:29 UTC)
Expired
Apr 22, 2006, 6:00 PM EDT
In force
8 hr
Issued by
the Storm Prediction Center
All 75 counties

Anson County, NC, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chatham County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Duplin County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Tyrrell County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC, City of Chesapeake, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Newport News, VA, City of Norfolk, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Virginia Beach, VA, City of Williamsburg, VA, Greensville County, VA, Isle of Wight County, VA, James City County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, York County, VA

The radar

The Raleigh/Durham radar (KRAX), 39 km from the middle of the area, began a volume at 14:28 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

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

IssuedProductOfficeCountiesLasted
Apr 22, 10:37 AM EDTSevere Thunderstorm WarningILMColumbus38 min
Apr 22, 11:11 AM EDTSevere Thunderstorm WarningILMColumbus49 min
Apr 22, 12:10 PM EDTSevere Thunderstorm WarningRAHHarnett, Johnston35 min
Apr 22, 12:28 PM EDTSevere Thunderstorm WarningMHXDuplin62 min
Apr 22, 12:35 PM EDTSevere Thunderstorm WarningRAHWake25 min
Apr 22, 12:49 PM EDTSevere Thunderstorm WarningRAHFranklin41 min
Apr 22, 12:58 PM EDTSevere Thunderstorm WarningRAHWake32 min
Apr 22, 1:02 PM EDTSevere Thunderstorm WarningAKQGloucester, James City, York, City of Williamsburg28 min
Apr 22, 1:05 PM EDTSevere Thunderstorm WarningILMColumbus25 min
Apr 22, 1:27 PM EDTSevere Thunderstorm WarningRAHVance, Warren33 min
Apr 22, 1:55 PM EDTSevere Thunderstorm WarningAKQNorthampton35 min
Apr 22, 2:29 PM EDTSevere Thunderstorm WarningAKQPrince George, Sussex31 min
Apr 22, 2:53 PM EDTSevere Thunderstorm WarningMHXCarteret37 min
Apr 22, 5:28 PM EDTSevere Thunderstorm WarningRAHStanly47 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 12:00Z, 2.5 hours before the alert went out and 164 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 12:00Z on 2006-04-22Temperature 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, Greensboro/Hi Pt, NC at 12:00Z on 2006-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -87 square meters per square second.19395878Sfc1 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
625 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-87 m²/s²
0-3 km storm-relative helicity
-132 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 22, 6:35 AM EDTMesoscale DiscussionSPCAlamance, Anson, Caswell, Chatham, Durham, Franklin and 17 more115 min
Apr 22, 8:28 AM EDTMesoscale DiscussionSPCAnson, Bladen, Chatham, Columbus, Cumberland, Harnett and 9 more92 min
Apr 22, 1:07 PM EDTMesoscale DiscussionSPCAlamance, Anson, Beaufort, Bertie, Bladen, Brunswick and 52 more83 min
Apr 22, 5:58 PM EDTMesoscale DiscussionSPCBladen, Brunswick, Chatham, Columbus, Craven, Cumberland and 24 more2 hr

Nearby

Severe Thunderstorm Watches in North Carolina, 2006Severe Thunderstorm Watches in Virginia, 2006Severe Thunderstorm Watches in South Carolina, 2006Every severe thunderstorm watch in 2006

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.