Alert archive / North Carolina / Wind Chill Advisories in 2019

Wind Chill Advisory 1, NWS Greenville-Spartanburg, SC

January 20, 201913 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this wind chill advisory at Jan 20, 2019, 3:48 AM EST for 13 counties in North Carolina. It took effect at Jan 20, 2019, 4:00 PM EST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Jan 20, 2019, 3:48 AM EST (08:48 UTC)
In effect from: Jan 20, 2019, 4:00 PM EST
Expired: Jan 21, 2019, 10:00 AM EST
In force: 18 hr
Issued by: NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Graham County, NC, Haywood County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Swain County, NC, Yancey County, NC

The radar

The Knoxville radar (KMRX), 91 km from the middle of the area, began a volume at 08:51 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, 8.8 hours before the alert went out and 248 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: 464 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 592 m²/s²
0-3 km storm-relative helicity: 643 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 wind chill 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 wind chill advisory went out at Jan 20, 3:24 AM EST, 24 minutes earlier.

Area forecast discussion, Jan 20, 3:24 AM EST, 24 minutes before

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Hazardous weather outlook, Jan 20, 3:34 AM EST, 14 minutes before

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In the hours before

Special weather statement, Jan 19, 10:17 PM EST, 5 hours 31 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 19, 10:09 PM EST	Wind Advisory	GSP	Alexander, Burke, Caldwell, Catawba, Cleveland, Davie and 13 more	21 hr
Jan 20, 2:40 AM EST	River Flood Advisory	GSP	Henderson, Transylvania	30 hr
Jan 19, 11:48 PM EST	Areal Flood Advisory	GSP	Greenville, Spartanburg	10 hr

Nearby

Wind Chill Advisories in North Carolina, 2019 Every wind chill advisory in 2019

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.