Local Research and
Reviews Of Past Events
Northwest Flow Snowfall Discussion Group Page
Collaboration for Improved Meteorology in the Mid-Atlantic and Southeast
In the Event Review Section:
Links to reviews of severe weather in high shear - low CAPE environments
Research papers by current and past members of the
staff of GSP
A Collaborative Approach to Study Northwest Flow Snow in the Southern Appalachians. Steve Keighton, Laurence Lee, Blair Holloway, David Hotz, Steven Zubrick, Jeffrey Hovis, Gary Votaw, L. Baker Perry, Gary Lackmann, Sandra E. Yuter, Charles Konrad, Douglas Miller, and Brian Etherton, Bull. Amer. Meteor. Soc., 90, 979-991.
Geologic, geomorphic, and meteorological aspects of debris flows triggered by Hurricanes Frances and Ivan during September 2004 in the Southern Appalachian Mountains of Macon County, North Carolina (southeastern USA). - R. M. Wooten, K. A. Gillon, A. C. Witt, R. S. Latham, T. J. Douglas, J. B. Bauer, S. J. Fuemmeler, and Laurence G. Lee - Landslides. Springer - Verlag, Vol. 5, February 2008.
Rainfall characteristics associated with the remnants of Tropical
Storm Helene in upstate South Carolina -Carlton W. Ulbrich and
Laurence G. Lee -Weather and Forecasting. American
Meteorological Society, Vol. 17, December 2002.
Model representation of freezing and melting precipitation:
Implications for winter weather forecasting -Gary M. Lackmann,
Kermit Keeter, Laurence G. Lee, and Michael B. Ek -Weather
and Forecasting. American Meteorological Society, Vol. 17,
Rainfall measurement error by WSR-88D radars due to variations
in Z-R law parameters and the radar constant -Carlton W. Ulbrich and
Laurence G. Lee -Journal of Atmospheric and Oceanic Technology
American Meteorological Society, Vol. 16, August 1999.
NWS Eastern Region Technical Attachments -
A study of three-quarter inch hail reports in Upstate South Carolina - 1988 to 1994
-Eastern Region General Interest Paper - Wayne Jones
Isentropic Analysis Applications in Forecasting Low-Level Clouds
-Eastern Region General Interest Paper - Kenneth James
Conference Papers and Presentations
Overview of the 2009-2010 Snow Season in the Southern Appalachian Mountains. - L. Baker Perry, David Hotz, Stephen Keighton, Laurence G. Lee, J. Dobson, D. Hall, and Charles E. Konrad - 2010. 67th Eastern Snow Conference, Hancock, MA.
Snowfall Accumulation forecasting challenges for the southern Applachians. - Douglas K. Miller, L. Baker Perry, Sandra E. Yuter, Laurence G. Lee and Stephen Keighton - 2008. 33rd Annual Meeting, Louisville, KY, National Weather Association.
Synoptic Classification of Snowfall Events in the Great Smoky Mountains, USA. - L. Baker Perry, Charles E. Konrad, David Hotz, and Laurence G. Lee - 2007. 64th Eastern Snow Conference, St. Johns, NL.
Short-term forecasting of tornadic environments in the complex
terrain of western North Carolina - Harry Gerapetritis
- Preprints, 20th Conference on Severe Local Storms, Orlando, FL, American Meteorological
Characteristics of WSR-88D velocity and reflectivity patterns
associated with a cold season non-supercell tornado in upstate
South Carolina - Laurence G. Lee and Wayne A. Jones
- 1998, Preprints, 19th Conference on Severe Local Storms,
Minneapolis, MN, American Meteorological Society, 151-154.
An analysis of the 4 September 1996 Hickory Nut Gorge flash
flood in western North Carolina - Thomas P. Johnstone and
Stephen A. Burrus - 1998, Preprints, 16th Conference on Weather Analysis
and Forecasting, Phoenix, AZ, American Meteorological Society, 275-277.
Comparison of reflectivity factors determined from disdrometer
and WSR-88D measurements in upstate South Carolina - Carlton W. Ulbrich,
Joseph M. Pelissier, and Laurence G. Lee - 1997, Preprints,
28th Conference on Radar Meteorology, Austin, TX, American
Meteorological Society, 382-383.
Effects of variations in Z-R law parameters and the radar constant
on rainfall rates measured by WSR-88D radars - Carlton W. Ulbrich,
Joseph M. Pelissier, and Laurence G. Lee - 1996, Preprints,
15th Conference on Weather Analysis and Forecasting, Norfolk, VA,
American Meteorological Society 316-319.
Past Weather Events
Brief reviews of significant weather events in our county warning
A Twenty Year Recollection of the Superstorm of March 1993 in the Western Carolinas and Extreme Northeast Georgia
An Early Season Snow Event 28-31 October 2012
A Widespread Severe Weather Outbreak on 1 July 2012
A Relationship Between Snowfall and Storm Tracks in the Greenville-Spartanburg County Warning Area
Single and Dual-Polarization Radar Observations of the Laurens County Thunderstorm Cluster on May 17th, 2012
Tornado Strikes Eastern Mecklenburg County and Western Cabarrus County on 3 March 2012.
The Northwest Flow Snow Event of 11 February 2012.
Rare Wintertime Tornadoes across the North Carolina Foothills on 11 January 2012.
The New Year 2012 Northwest Flow Snow Event.
Tornado hits near Rock Hill on 16 November 2011.
The Quallah Boundary Flash Flood of 14 and 15 July 2011.
An Epic Outbreak of tornadoes affects northeast Georgia and western North Carolina on 27-28 April 2011.
Tornadoes over the western Piedmont of North Carolina from the Carolinas/Virginia Tornado Outbreak of 16 April 2011.
The Heavy Snow and Freezing Rain of 10-11 January 2011.
Christmas Day 2010 Snowfall.
Heavy Snow Over Western North Carolina from a Pre-Frontal Precipitation Band on 12 December 2010.
Tornado hits near the Buck Stand community in Abbeville County, South Carolina, on 3 May 2010.
Tornadoes touch down near Fair Play and Pendleton, South Carolina, on 8 April 2010.
The Palm Sunday, March 28, 2010, Severe Weather Outbreak, including the tornadoes that struck Belmont and Spencer, North Carolina.
Snow Accumulation Map for 2-3 March 2010 Winter Storm
Snow Accumulation Map for 12-13 February 2010 Winter Storm
The 4-6 February 2010 Winter Storm, including heavy snow and ice across the mountains and foothills of North Carolina, flooding rain in the French Broad River, Broad River, and Catawba River basins, and the Rich Cove debris flow.
The Heavy Snow of 29-30 January 2010
A Review of the Record-Breaking Snow and Persistent Cold of February and March 1960
The 18-20 December 2009 Winter Storm
The 17-22 September, 2009 Heavy Rain Event
The Good Friday Severe Weather Outbreak of 10 April 2009.
The Winter Storm of 1-2 March 2009.
Tornadoes and Flooding Associated With the Remnants of Tropical Storm Fay, 25-27 August 2008.
Tornadoes hit Advance, North Carolina, on 8 May and McAdenville, North Carolina, on 9 May
The Kings Mountain tornado of 28 April 2008
Tornadoes strike near Fallston and Lincolnton on 19 April 2008
The Ides Of March Supercell outbreak across northeast Georgia and Upstate South Carolina
A squall line produces severe weather across the western Carolinas on 4 March 2008
A Comparison of Two Northwest Flow Snowfall Events from the 2007 - 2008 Winter Season (1-2 January and 27-28 February, 2008).
Snow Accumulation Map for 16-17 January Winter Storm
Remnants of Humberto spawn a tornado near Hickory Tavern, South Carolina, on September 14, 2007
Record breaking heat across the western Carolinas, August 2007
The April 15-16, 2007 High Wind Event
An early April Northwest Flow snowfall event and cold air outbreak
The 17-18 February 2007 Northwest Flow snow event
The 9 January 2007 Northwest Flow snow event
Tornadoes strike Liberty and Moore, South Carolina, and near Gastonia, North Carolina, on 5 January 2007
A record number of severe thunderstorms across
the western Carolinas and northeast Georgia during 2006.
Tornadoes strike the western Piedmont of North Carolina on 15 November 2006
Severe thunderstorms sweep across the Lakelands and Lower Piedmont of South Carolina
on 28 September 2006
Flash flooding along Twelvemile Creek and the Hickory Nut Gorge on 26 June 2006, including a debris flow at Jones Gap State Park
Severe thunderstorms across the western Carolinas on 10-12 June 2006
Tornado strikes northern Gaston
County east of Cherryville on 26 May 2006
The Mothers Day 2006 severe
weather outbreak across the Piedmont of the Carolinas including the Rimer, North Carolina (Cabarrus County), tornado
The Belton hail storm of 21 April 2006
A Case Study: The mountain snow event
of 11-13 February 2006
An overview of the
Bessemer City tornado of 13 January 2006
An unseasonably warm January
for the western Carolinas and extreme northeast Georgia.
A case study of
the ice storm of 15 December 2005 in the western Carolinas and extreme northeast Georgia.
October 7 and 8, 2005: A list of rainfall
reports from the western Carolinas and northeast Georgia after
the passage of the remnants of T.S. Tammy.
July 6 and 7, 2005: A
list of rainfall reports from the western Carolinas and
northeast Georgia after the passage of the remnants of T.S. Cindy.
29-30th, 2005: Winter storm produced widespread accumulations
of snow, sleet, and freezing rain.
January 13-14th, 2005:
Information on the tornadoes that affected Laurens County, SC
and Rowan County, NC.
19 December 2004:
Significant snow storm affects the mountains of North Carolina.
25 November 2004:
A brief tornado touched down near Santuck in Union County, South Carolina.
The deadly debris flow along Peeks Creek in Macon County NC during Hurricane Ivan, 16-17 September 2004
The remnants of Frances
(6-8 September 2004), Ivan
(16-17 September 2004), and Jeanne
(26-28 September 2004) resulted in heavy rain over the western
Carolinas and northeast Georgia. Click on the storm names above
for individual rainfall, for an easy rainfall comparison
29 July 2004: Flash flooding pushed the Reedy River at Greenville
to near record levels.
26-27 February 2004: A major winter storm hit the western Carolinas
and northeast Georgia. The storm produced a large area of greater
4 inches of snow accumulation. Some spots saw snow pile over a foot and a
27 January 2004 Winter Storm: List of snow and ice accumulation reports
2003 Ranked within the top 10 wettest
years for Asheville, Charlotte, and Greenville-Spartanburg.
December 18-19th, 2003:
Event map and list of reports.
December 13-14th, 2003: List
of Ice, Sleet, and Snow Reports received.
December 4th, 2003: An event
map and report listing for a northwest snow event.
November 28-29th, 2003:
An event map and report listing for a northwest snow event.
July 1-2, 2003: The
remnants of Tropical Storm Bill drenched northeast Georgia and
the western Carolinas.
30 March 2003 Snowfall Map
January 23, 2003: An analysis
of a heavy snow event in the lee of the Appalachians.
January 16-17, 2003:
A case study of a snow event in the mountains and foothills of the western
Carolinas and extreme northern Georgia.
4-5 December 2002:
An overview of a major winter storm.
10-11 November 2002:
A case study of an significant outbreak of severe thunderstorms
(31 warnings issued, 29 for severe thunderstorms, and 2 for tornadoes).
2002: An in situ wedge with a temperature contrast of
over 30 degrees Fahrenheit a short distance across the front.
2002 Winter Storm: More of a bust analysis as much of
the warning area for this snow and ice event did not verify.
2002 Winter Storm: A well forecast event that was all snow.
17 October 2001
Warm Anomaly: Case study briefly examining an area of warm
temperatures and strong winds that develops over the French Broad
River Valley and Upstate South Carolina behind cold fronts.
8 July 2001 Mesoscale
Convective System: A large bow echo crossed the North Carolina Mountains
during the late afternoon and early evening hours.
9 June 2001 Union County, South Carolina, Landspout: A weak, non-supercell
tornado occurred this day in southern Union County
17 April 2001 northwest
snow event: A late season snow event. Snow showers even fell
east of the mountains with temperatures near 50 degrees.
1 April 2001
severe thunderstorms: An unusual event that produced damaging
winds and large hail with dewpoints in the mid 40s.
20-21 March 2001 Winter Storm: A high-elevation late season heavy snow event. Map only.
2001 wind and snow: Strong northwest flow event. Damaging
winds affected most of the higher elevations of the County Warning Area.
2001 snow and sleet: A mix of snow and sleet, with the
highest accumulations in the western foothills. Map only.
25 January 2001 snow:
A minor northwest flow snow event.
20 January 2001 snow:
A northwest flow snow event.
19 January 2001 tornado and microburst near the town of Vanna in Hart County, Georgia.
19 December 2000 snow:
A minor bust as rain never turned to snow in the eastern upstate
and most of the North Carolina piedmont.
3 December 2000 snow:
This event is better known for where it did not snow, mainly in
the North Carolina piedmont.
19 November 2000 snow:
The first snow of the 2000-2001 winter season is one of the earliest
and heaviest November snow events on record.
20 November 2000 snow:
A northwest flow snow event that didn't quite work out. What went wrong?
October, 2000 drought:
The driest October on record in the Greenville-Spartanburg metro area.
trails down the trunks of trees: The result of a severe thunderstorm
at GSP 28 July 2000.
3 April 2000 tornado
in Pickens County east of Clemson.
The 24-25 January
2000 heavy snow event over the Piedmont of the Carolinas.
Two Winter Storms on 17-18 January and 22-23 January.
heavy rains in the North Carolina Mountains -- 26 November 1999.
First snow of
the 1999-2000 winter season -- 3 November 1999.
supercell thunderstorm hits Spartanburg -- 20 August 1999.
All time record
high tied at GSP airport -- 31 July 1999.
6 May 1999 Asheville tornado.