Alert archive / North Carolina / Freeze Warnings in 2016

Freeze Warning 6, NWS Greenville-Spartanburg, SC

April 7, 20169 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this freeze warning at Apr 7, 2016, 3:59 PM EDT for 9 counties in North Carolina. It took effect at Apr 8, 2016, 2:00 AM EDT. It was in force for 8 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: Apr 7, 2016, 3:59 PM EDT (19:59 UTC)
In effect from: Apr 8, 2016, 2:00 AM EDT
Expired: Apr 8, 2016, 10:00 AM EDT
In force: 8 hr
Issued by: NWS Greenville-Spartanburg, SC

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

The radar

The Knoxville radar (KMRX), 77 km from the middle of the area, began a volume at 20:02 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 12:00Z, 8.0 hours before the alert went out and 264 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: 588 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 171 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 freeze 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 freeze warning went out at Apr 7, 3:35 PM EDT, 24 minutes earlier.

Area forecast discussion, Apr 7, 3:35 PM EDT, 24 minutes before

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Hazardous weather outlook, Apr 7, 11:45 AM EDT, 4 hours 14 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
Apr 7, 1:51 AM EDT	Special Weather Statement	GSP	Cleveland	39 min
Apr 7, 2:39 AM EDT	Special Weather Statement	GSP	Cleveland, Gaston, Lincoln	51 min
Apr 7, 3:27 AM EDT	Special Weather Statement	GSP	Cabarrus, Gaston, Mecklenburg	63 min
Apr 7, 4:26 AM EDT	Special Weather Statement	GSP	Cabarrus, Rowan, Union	34 min
Apr 7, 10:30 AM EDT	Wind Advisory	GSP	Avery, Haywood, Jackson, Madison, Mitchell, Swain and 1 more	9 hr
Apr 7, 3:59 PM EDT	Freeze Watch	GSP	Avery, Buncombe, Burke, Caldwell, Graham, Haywood and 11 more	12 hr
Apr 7, 12:39 AM EDT	Special Weather Statement	GSP	Oconee, Pickens	36 min
Apr 7, 1:13 AM EDT	Special Weather Statement	GSP	Anderson, Greenville, Pickens	47 min

Nearby

Freeze Warnings in North Carolina, 2016 Every freeze warning in 2016

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.