Alert archive / North Carolina / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 395, NWS Raleigh, NC

August 2, 20084 counties in North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Aug 2, 2008, 3:11 PM EDT for 4 counties in North Carolina. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 2, 2008, 3:11 PM EDT (19:11 UTC)
Expired
Aug 2, 2008, 4:15 PM EDT
In force
64 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon

Counties Davidson County, NC, Forsyth County, NC, Guilford County, NC, Randolph County, NC

The radar

The Roanoke radar (KFCX), 124 km from the middle of the area, began a volume at 19:10 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 2, 12:02 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.2 hours before the alert went out and 20 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 2008-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 617 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, Greensboro/Hi Pt, NC at 12:00Z on 2008-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
617 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1463 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Raleigh, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 2, 3:02 PM EDT, 9 minutes earlier.

Area forecast discussion, Aug 2, 3:02 PM EDT, 9 minutes before
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Hazardous weather outlook, Aug 2, 12:10 PM EDT, 3 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
1210 PM EDT SAT AUG 2 2008

NCZ007>011-021>028-038>043-073>078-083>086-088-089-031200-
PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE-
ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE-DAVIDSON-RANDOLPH-CHATHAM-WAKE-
JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT-WAYNE-ANSON-
RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON-
1210 PM EDT SAT AUG 2 2008

...SEVERE THUNDERSTORM WATCH 792 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

NUMEROUS THUNDERSTORMS WILL MOVE INTO CENTRAL NORTH CAROLINA THIS
AFTERNOON...WITH A FEW THUNDERSTORMS BECOMING SEVERE. THE GREATEST
THREAT WILL BE GUSTY WINDS IN EXCESS OF 58 MPH...ALONG WITH HAIL
AROUND THE SIZE OF PENNIES. IN ADDITION...THE STRONGER STORMS WILL
PRODUCE TORRENTIAL DOWNPOURS AND CONTINUOUS TO EXCESSIVE LIGHTNING
STRIKES. THE HEAVY RAIN MAY LEAD TO SOME MINOR FLOODING IN URBAN
AREAS WHILE THE LIGHTNING MAY CAUSE A FEW HOUSE FIRES AND SOME
POWER OUTAGES.

FINALLY...HEAT INDEX VALUES ALONG AND EAST OF HIGHWAY 1 WILL PEAK
AT 100 TO 104 DEGREES THIS AFTERNOON. ANYONE SPENDING TIME
OUTDOORS TODAY SHOULD DRINK PLENTY OF WATER...STAY IN A SHADED
AND WELL-VENTILATED AREA AS MUCH AS POSSIBLE...AND TAKE FREQUENT
BREAKS IN AIR CONDITIONING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

A STRONG UPPER LEVEL RIDGE WILL BUILD EAST TOWARD THE SOUTHERN
APPALACHIANS BETWEEN MONDAY AND THURSDAY OF NEXT WEEK. TEMPERATURES
DURING THIS PERIOD ARE EXPECTED TO BE AS MUCH AS 10 DEGREES ABOVE
NORMAL...WITH HIGHS REACHING INTO THE MID TO UPPER 90S ON
MONDAY...TUESDAY AND WEDNESDAY. HEAT INDEX VALUES COULD APPROACH
105 DEGREES.

.SPOTTER INFORMATION STATEMENT...

FORMAL SKYWARN SPOTTER ACTIVATION HAS TAKEN PLACE. SPOTTERS SHOULD
REPORT ANY SEVERE WEATHER AS SOON AS IT IS SAFE TO DO SO. PLEASE
STAY TUNED FOR THE LATEST WEATHER INFORMATION.

DJF

In the hours before

Local storm report, Aug 2, 2:33 PM EDT, 38 minutes before
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Local storm report, Aug 2, 2:34 PM EDT, 37 minutes before
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Local storm report, Aug 2, 2:39 PM EDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
239 PM EDT SAT AUG 02 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0225 PM     HAIL             5 N ROCKINGHAM          35.01N 79.76W
08/02/2008  E1.00 INCH       RICHMOND           NC   LAW ENFORCEMENT

&&

BDUNSTAN
Local storm report, Aug 2, 2:49 PM EDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
249 PM EDT SAT AUG 02 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0235 PM     HAIL             ROCKINGHAM              34.94N 79.76W
08/02/2008  E1.75 INCH       RICHMOND           NC   TRAINED SPOTTER

&&

BDUNSTAN
Special weather statement, Aug 2, 2:53 PM EDT, 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
253 PM EDT SAT AUG 2 2008

NCZ085-021930-
SCOTLAND-
253 PM EDT SAT AUG 2 2008

...A STRONG THUNDERSTORM WILL MOVE ACROSS SCOTLAND COUNTY THROUGH 330
PM EDT...

AT 253 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 10
MILES SOUTHWEST OF CAMP MACKALL...OR ABOUT 8 MILES EAST OF
ROCKINGHAM...MOVING EAST AT 13 MPH.

THIS STORM WILL AFFECT MAINLY RURAL LOCATIONS OF NORTH CENTRAL
SCOTLAND COUNTY.

GUSTY WINDS OF 40 TO 50 MPH...PEA SIZE HAIL...VERY HEAVY RAIN AND
DANGEROUS CLOUD-TO-GROUND LIGHTNING CAN BE EXPECTED WITH THESE
STORMS. THESE WINDS ARE CAPABLE OF BRINGING DOWN LARGE TREE LIMBS.
LIGHT OBJECTS SUCH AS TRASH CANS...POTTED PLANTS...LAWN FURNITURE
AND AWNINGS COULD BE TOSSED AROUND.

JFB
Local storm report, Aug 2, 3:11 PM EDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
311 PM EDT SAT AUG 02 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 PM     TSTM WND DMG     LEWISVILLE              36.09N 80.40W
08/02/2008                   FORSYTH            NC   LAW ENFORCEMENT

            TREE DOWN ON CONRAD ROAD

&&

BDUNSTAN

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 2, 1:44 PM EDTSevere Thunderstorm WarningRAHAlamance, Orange, Person46 min
Aug 2, 2:08 PM EDTSevere Thunderstorm WarningRAHRichmond67 min
Aug 2, 2:14 PM EDTSevere Thunderstorm WarningRAHForsyth61 min
Aug 2, 2:44 PM EDTAreal Flood AdvisoryRAHForsyth2 hr
Aug 2, 3:10 PM EDTAreal Flood AdvisoryRAHRichmond103 min
Aug 2, 3:49 PM EDTSevere Thunderstorm WarningRAHAnson, Richmond33 min
Aug 2, 3:54 PM EDTSevere Thunderstorm WarningRAHGuilford, Randolph51 min
Aug 2, 4:21 PM EDTSevere Thunderstorm WarningRAHJohnston, Wayne39 min
Aug 2, 5:02 PM EDTSevere Thunderstorm WarningRAHAnson, Richmond43 min
Aug 2, 5:40 PM EDTSevere Thunderstorm WarningRAHMontgomery, Moore, Richmond50 min
Aug 2, 5:44 PM EDTSevere Thunderstorm WarningRAHAnson, Richmond61 min
Aug 2, 6:08 PM EDTFlash Flood WarningRAHAnson2 hr
Aug 2, 6:44 PM EDTSevere Thunderstorm WarningRAHAnson61 min
Aug 2, 7:03 PM EDTSevere Thunderstorm WarningRAHRichmond, Scotland57 min
Aug 2, 7:29 PM EDTFlash Flood WarningRAHScotland93 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2008Every severe thunderstorm warning in 2008

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.