Alert archive / North Carolina / Winter Storm Watches in 2013

Winter Storm Watch 2, NWS Greenville-Spartanburg, SC

January 16, 201312 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this winter storm watch at Jan 16, 2013, 4:06 PM EST for 12 counties in North Carolina. It took effect at Jan 17, 2013, 4:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 16, 2013, 4:06 PM EST (21:06 UTC)
In effect from: Jan 17, 2013, 4:00 PM EST
Expired: Jan 17, 2013, 4:18 AM EST
In force
Issued by: NWS Greenville-Spartanburg, SC

Counties Alexander County, NC, Cabarrus County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Iredell County, NC, Lincoln County, NC, Mecklenburg County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC

The radar

The Greer radar (KGSP), 121 km from the middle of the area, began a volume at 21:08 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

Roanoke, VA (KRNK), launched 12:00Z, 9.1 hours before the alert went out and 237 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 383 m above ground
0-6 km bulk shear: 84 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 74 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 winter storm watch 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 winter storm watch went out at Jan 16, 3:18 PM EST, 48 minutes earlier.

Area forecast discussion, Jan 16, 3:18 PM EST, 48 minutes before

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Hazardous weather outlook, Jan 16, 4:45 AM EST, 11 hours 21 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 15, 7:06 PM EST	Areal Flood Warning	GSP	Haywood, Jackson	5 hr
Jan 15, 10:17 PM EST	River Flood Warning	GSP	Swain	27 hr
Jan 15, 11:15 PM EST	Areal Flood Warning	GSP	Swain	6 hr
Jan 15, 11:52 PM EST	River Flood Advisory	GSP	Henderson, Transylvania	36 hr
Jan 16, 4:06 AM EST	Winter Storm Watch	GSP	Avery, Buncombe, Graham, Haywood, Jackson, Macon and 4 more	12 hr
Jan 16, 5:09 AM EST	Areal Flood Advisory	GSP	Swain	3 hr
Jan 16, 7:58 AM EST	Areal Flood Advisory	GSP	Swain	2 hr
Jan 16, 10:45 AM EST	Areal Flood Advisory	GSP	Macon, Swain	5 hr
Jan 16, 3:29 PM EST	River Flood Warning	GSP	Henderson, Transylvania	3 days
Jan 16, 4:06 PM EST	Winter Storm Warning	GSP	Alexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 21 more	34 hr
Jan 16, 4:06 PM EST	Winter Weather Advisory	GSP	Graham, Jackson, Macon, Swain, Union	31 hr

Nearby

Winter Storm Watches in North Carolina, 2013 Every winter storm watch in 2013

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.