Alert archive / North Carolina / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 174

April 26, 200341 counties in North Carolina; 6 counties in South Carolina; 8 counties in Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Apr 26, 2003, 11:30 AM EDT for 41 counties in North Carolina; 6 counties in South Carolina; 8 counties in Virginia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 26, 2003, 11:30 AM EDT (15:30 UTC)
Expired
Apr 26, 2003, 5:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 55 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, Cumberland County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Edgecombe County, NC, Gates 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, Lenoir County, NC, Martin 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, Robeson County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, City of Chesapeake, VA, City of Franklin, VA, City of Newport News, VA, City of Norfolk, VA, City of Portsmouth, VA, City of Suffolk, VA, Isle of Wight County, VA, Southampton County, VA

The radar

The Raleigh/Durham radar (KRAX), 81 km from the middle of the area, began a volume at 15:32 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

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

IssuedProductOfficeCountiesLasted
Apr 26, 11:51 AM EDTSevere Thunderstorm WarningILMBrunswick39 min
Apr 26, 2:20 PM EDTSevere Thunderstorm WarningMHXOnslow25 min
Apr 26, 2:22 PM EDTSevere Thunderstorm WarningMHXOnslow23 min
Apr 26, 3:02 PM EDTSevere Thunderstorm WarningILMMarlboro58 min
Apr 26, 3:12 PM EDTSevere Thunderstorm WarningMHXCraven48 min
Apr 26, 3:32 PM EDTSevere Thunderstorm WarningILMRobeson58 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

Newport, NC (KMHX), launched 12:00Z, 3.5 hours before the alert went out and 120 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 2003-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 54 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 2003-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
54 J/kg
Mixed-layer CIN
-207 J/kg
Mixed-layer LCL
947 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
74 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 26, 10:03 AM EDTMesoscale DiscussionSPCAlamance, Anson, Beaufort, Bertie, Bladen, Brunswick and 54 more117 min
Apr 26, 1:45 PM EDTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Chowan and 34 more2 hr
Apr 26, 2:04 PM EDTMesoscale DiscussionSPCAlexander, Anson, Avery, Burke, Cabarrus, Caldwell and 20 more116 min
Apr 26, 4:11 PM EDTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Chowan and 34 more64 min

Nearby

Severe Thunderstorm Watches in North Carolina, 2003Severe Thunderstorm Watches in Virginia, 2003Severe Thunderstorm Watches in South Carolina, 2003Every severe thunderstorm watch in 2003

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.