Alert archive / North Carolina / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 126, NWS Raleigh, NC

October 21, 2005Wake County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Oct 21, 2005, 8:02 PM EDT for Wake County, North Carolina. It was in force for 28 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: Oct 21, 2005, 8:02 PM EDT (00:02 UTC)
Expired: Oct 21, 2005, 8:30 PM EDT
In force: 28 min
Issued by: NWS Raleigh, NC
Area: Counties, with a storm outline in the text

County Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 20 km from the middle of the area, began a volume at 00:03 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 nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.0 hours before the alert went out and 117 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 39 J/kg
Mixed-layer CIN: -218 J/kg
Mixed-layer LCL: 601 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 262 m²/s²
0-3 km storm-relative helicity: 395 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

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 Oct 21, 6:31 PM EDT, 1 hour 31 minutes earlier.

Area forecast discussion, Oct 21, 6:31 PM EDT, 1 hour 31 minutes before

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Hazardous weather outlook, Oct 21, 5:34 AM EDT, 14 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
534 AM EDT FRI OCT 21 2005

NCZ007>011-021>028-038>043-073>078-083>086-088-089-220945-
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-
534 AM EDT FRI OCT 21 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL NORTH
CAROLINA.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A STRONG COLD FRONTAL PASSAGE AND STRONG WINDS IN THE UPPER ATMOSPHERE
WILL COMBINE TO PRODUCE THUNDERSTORMS ON SATURDAY. SOME OF THE
STORMS COULD BECOME SEVERE...ESPECIALLY ACROSS NORTH PORTIONS OF
THE PIEDMONT AND COASTAL PLAIN. STAY TUNED TO ALL HAZARDS WEATHER RADIO
OR OTHER LOCAL MEDIA FOR THE LATEST UPDATES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT NEEDED AT THIS TIME.

In the hours before

Special weather statement, Oct 21, 7:45 PM EDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
745 PM EDT FRI OCT 21 2005

NCZ041-042-220045-
JOHNSTON-WAKE-
745 PM EDT FRI OCT 21 2005

...A STRONG THUNDERSTORM WILL MOVE ACROSS EASTERN WAKE AND WESTERN
JOHNSTON COUNTIES THROUGH 845 PM EDT...

AT 745 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 7
MILES NORTH OF LILLINGTON...OR ABOUT OVER ANGIER...MOVING NORTHEAST
AT 25 MPH.

SOME LOCATIONS AFFECTED BY THESE STORMS INCLUDE...EASTERN FUQUAY
VARINA...CLEVELAND...COATS CROSSROADS...AUBURN...AND CLAYTON.

GUSTY WINDS OF 35 TO 45 MPH... HAIL TO THE SIZE OF MARBLES... AND
DANGEROUS CLOUD-TO-GROUND LIGHTNING CAN BE EXPECTED WITH THESE
STORMS. LIGHT OBJECTS SUCH AS TRASH CANS...LAWN FURNITURE AND
AWNINGS COULD BE TOSSED AROUND.

MWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 21, 9:10 PM EDT	Severe Thunderstorm Warning	RAH	Anson	35 min
Oct 21, 11:27 PM EDT	Severe Thunderstorm Warning	RAH	Davidson	33 min
Oct 22, 12:08 AM EDT	Severe Thunderstorm Warning	RAH	Guilford	34 min
Oct 22, 1:24 AM EDT	Severe Thunderstorm Warning	RAH	Johnston	21 min
Oct 22, 1:41 AM EDT	Severe Thunderstorm Warning	RAH	Hoke	34 min
Oct 22, 2:07 AM EDT	Severe Thunderstorm Warning	RAH	Cumberland	23 min
Oct 22, 2:32 AM EDT	Severe Thunderstorm Warning	RAH	Cumberland	28 min
Oct 22, 3:25 AM EDT	Severe Thunderstorm Warning	RAH	Sampson	35 min
Oct 22, 4:02 AM EDT	Severe Thunderstorm Warning	RAH	Sampson	28 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2005 Every severe thunderstorm warning in 2005

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.