Alert archive / North Carolina / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 496

July 5, 200238 counties in North Carolina; 36 counties in Virginia; Mercer County, West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Jul 5, 2002, 2:15 PM EDT for 38 counties in North Carolina; 36 counties in Virginia; Mercer County, West Virginia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 5, 2002, 2:15 PM EDT (18:15 UTC)
Expired
Jul 5, 2002, 8:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 75 counties

Alamance County, NC, Alleghany County, NC, Beaufort County, NC, Bertie County, NC, Camden County, NC, Caswell County, NC, Chowan County, NC, Currituck County, NC, Davie County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Hertford County, NC, Hyde County, NC, Martin County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Pitt County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Tyrrell County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wilkes County, NC, Wilson County, NC, Yadkin County, NC, Bedford County, VA, Bland County, VA, Brunswick County, VA, Campbell County, VA, Carroll County, VA, Charlotte County, VA, City of Chesapeake, VA, City of Danville, VA, City of Emporia, VA, City of Franklin, VA, City of Galax, VA, City of Martinsville, VA, City of Portsmouth, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, City of Suffolk, VA, City of Virginia Beach, VA, Floyd County, VA, Franklin County, VA, Giles County, VA, Grayson County, VA, Greensville County, VA, Halifax County, VA, Henry County, VA, Isle of Wight County, VA, Lunenburg County, VA, Mecklenburg County, VA, Montgomery County, VA, Patrick County, VA, Pittsylvania County, VA, Pulaski County, VA, Roanoke County, VA, Southampton County, VA, Sussex County, VA, Wythe County, VA, Mercer County, WV

The radar

The Roanoke radar (KFCX), 102 km from the middle of the area, began a volume at 18:15 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

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

IssuedProductOfficeCountiesLasted
Jul 5, 3:12 PM EDTSevere Thunderstorm WarningRNKFranklin48 min
Jul 5, 3:31 PM EDTSevere Thunderstorm WarningRNKRoanoke, City of Roanoke29 min
Jul 5, 3:57 PM EDTSevere Thunderstorm WarningRNKBedford, Franklin48 min
Jul 5, 4:41 PM EDTSevere Thunderstorm WarningRNKCampbell, City of Lynchburg34 min
Jul 5, 5:05 PM EDTSevere Thunderstorm WarningRNKAlleghany25 min
Jul 5, 5:10 PM EDTSevere Thunderstorm WarningRNKHalifax50 min
Jul 5, 5:43 PM EDTSevere Thunderstorm WarningMHXMartin32 min
Jul 5, 6:04 PM EDTSevere Thunderstorm WarningRAHFranklin41 min
Jul 5, 6:19 PM EDTSevere Thunderstorm WarningRAHWilson26 min
Jul 5, 6:31 PM EDTSevere Thunderstorm WarningRAHHalifax29 min
Jul 5, 7:02 PM EDTSevere Thunderstorm WarningRAHHalifax, Nash28 min
Jul 5, 7:03 PM EDTSevere Thunderstorm WarningRAHWilson42 min
Jul 5, 7:26 PM EDTSevere Thunderstorm WarningRAHEdgecombe, Halifax49 min
Jul 5, 7:49 PM EDTSevere Thunderstorm WarningRAHHarnett, Johnston, Wake41 min
Jul 5, 7:54 PM EDTFlash Flood WarningRAHWilson66 min

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 6.3 hours before the alert went out and 65 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, Roanoke, VA at 12:00Z on 2002-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1258 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, Roanoke, VA at 12:00Z on 2002-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939Sfc1 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
1258 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1019 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in North Carolina, 2002Severe Thunderstorm Watches in Virginia, 2002Severe Thunderstorm Watches in West Virginia, 2002Every severe thunderstorm watch in 2002

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.