Alert archive / North Carolina / Winter Storm Warnings in 2022

Winter Storm Warning 5, NWS Greenville-Spartanburg, SC

March 11, 20227 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this winter storm warning at Mar 11, 2022, 4:50 AM EST for 7 counties in North Carolina. It took effect at Mar 12, 2022, 1:00 AM EST. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 11, 2022, 4:50 AM EST (09:50 UTC)
In effect from: Mar 12, 2022, 1:00 AM EST
Expired: Mar 12, 2022, 7:00 PM EST
In force: 18 hr
Issued by: NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Graham County, NC, Haywood County, NC, Madison County, NC, Mitchell County, NC, Swain County, NC, Yancey County, NC

The radar

The Knoxville radar (KMRX), 73 km from the middle of the area, began a volume at 09:51 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

Roanoke, VA (KRNK), launched 00:00Z, 9.8 hours before the alert went out and 334 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: 1086 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 205 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 warning 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 warning went out at Mar 11, 4:09 AM EST, 41 minutes earlier.

Area forecast discussion, Mar 11, 4:09 AM EST, 41 minutes before

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Hazardous weather outlook, Mar 10, 5:22 PM EST, 11 hours 28 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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
Mar 11, 4:50 AM EST	Winter Weather Advisory	GSP	Avery, Buncombe, Graham, Haywood, Henderson, Jackson and 6 more	38 hr
Mar 11, 6:39 AM EST	Dense Fog Advisory	GSP	Alexander, Cabarrus, Catawba, Davie, Gaston, Iredell and 4 more	2 hr
Mar 11, 8:56 AM EST	Dense Fog Advisory	GSP	Cabarrus, Davie, Gaston, Iredell, Lincoln, Mecklenburg and 2 more	2 hr
Mar 11, 3:07 PM EST	Wind Chill Advisory	GSP	Avery, Graham, Haywood, Jackson, Macon, Madison and 3 more	40 hr
Mar 11, 4:37 PM EST	Wind Advisory	GSP	Alexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 22 more	32 hr

Nearby

Winter Storm Warnings in North Carolina, 2022 Every winter storm warning in 2022

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.