Alert archive / North Carolina / Snow Advisories in 2007

Snow Advisory 4, NWS Greenville-Spartanburg, SC

February 17, 20077 counties in North Carolina; Rabun County, Georgia

NWS Greenville-Spartanburg, SC issued this snow advisory at Feb 17, 2007, 2:38 AM EST for 7 counties in North Carolina; Rabun County, Georgia. It took effect at Feb 17, 2007, 4:00 PM EST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
Feb 17, 2007, 2:38 AM EST (07:38 UTC)
In effect from
Feb 17, 2007, 4:00 PM EST
Expired
Feb 18, 2007, 10:03 AM EST
In force
18 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Rabun County, GA, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Jackson County, NC, Macon County, NC, McDowell County, NC, Transylvania County, NC

The radar

The Greer radar (KGSP), 70 km from the middle of the area, began a volume at 07:35 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, 7.6 hours before the alert went out and 252 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 00:00Z on 2007-02-17Temperature 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 00:00Z on 2007-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939587897Sfc1 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
2682 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this snow advisory went out at Feb 17, 2:10 AM EST, 28 minutes earlier.

Area forecast discussion, Feb 17, 2:10 AM EST, 28 minutes before
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Hazardous weather outlook, Feb 16, 3:34 PM EST, 11 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
334 PM EST FRI FEB 16 2007

GAZ010-NCZ033-048>053-058-059-062>065-501-503-505-507-509-172045-
RABUN-AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
CALDWELL MOUNTAINS-BURKE MOUNTAINS-MCDOWELL MOUNTAINS-
RUTHERFORD MOUNTAINS-POLK MOUNTAINS-
334 PM EST FRI FEB 16 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
GEORGIA AND WESTERN NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SNOW SHOWER CHANCES WILL BE ON THE INCREASE SATURDAY AFTERNOON AND
EVENING. COLD NORTHWEST FLOW SATURDAY NIGHT AND SUNDAY WILL RESULT
IN SNOW SHOWER CHANCES CONTINUING FOR THE TENNESSEE BORDER
COUNTIES. LOCALLY HEAVY SNOWFALL WILL BE POSSIBLE ACROSS HIGHER
ELEVATIONS...ESPECIALLY NEAR THE TENNESSEE LINE. A WINTER STORM
WATCH IS IN EFFECT FOR A PORTION OF THE AREA. FOR FURTHER DETAILS...
PLEASE REFER TO THE LATEST WINTER WEATHER MESSAGE...WSWGSP...ISSUED
BY THIS OFFICE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

GAZ017-018-026-028-029-NCZ035>037-056-057-068>072-082-502-504-506-
508-510-SCZ001>014-019-172045-
HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL-DAVIE-
CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-
UNION NC-GREATER CALDWELL-GREATER BURKE-EASTERN MCDOWELL-
GREATER RUTHERFORD-EASTERN POLK-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
334 PM EST FRI FEB 16 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND
UPSTATE SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 17, 2:38 AM ESTWinter Storm WarningGSPAvery, Graham, Haywood, Madison, Mitchell, Swain and 1 more36 hr
Feb 17, 2:38 AM ESTWinter Weather AdvisoryGSPAvery, Burke, Caldwell, Graham, Haywood, McDowell and 4 more33 hr
Feb 17, 3:18 PM ESTRed Flag WarningGSPElbert, Franklin, Habersham, Hart, Rabun, Stephens28 hr

Nearby

Snow Advisories in North Carolina, 2007Snow Advisories in Georgia, 2007Every snow advisory in 2007

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.