Alert archive / North Carolina / Freeze Watches in 2021
Freeze Watch 3, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this freeze watch at Apr 21, 2021, 8:58 PM EDT for 17 counties in North Carolina. It took effect at Apr 23, 2021, 2:00 AM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Apr 21, 2021, 8:58 PM EDT (00:58 UTC)
- In effect from
- Apr 23, 2021, 2:00 AM EDT
- Expired
- Apr 22, 2021, 3:35 AM EDT
- In force
- 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, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Yancey County, NC
The radar
The Greer radar (KGSP), 83 km from the middle of the area, began a volume at 00:59 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
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.0 hours before the alert went out and 305 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2126 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freeze 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 freeze watch went out at Apr 21, 7:12 PM EDT, 1 hour 46 minutes earlier.
Area forecast discussion, Apr 21, 7:12 PM EDT, 1 hour 46 minutes before
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</html>The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 3:35 AM EDT | Frost Advisory | GSP | Cabarrus, Cleveland, Gaston, Mecklenburg, Polk, Rutherford and 1 more | 29 hr |
| Apr 22, 3:35 AM EDT | Freeze Warning | GSP | Alexander, Avery, Buncombe, Burke, Caldwell, Catawba and 15 more | 29 hr |
Nearby
Freeze Watches in North Carolina, 2021Every freeze watch in 2021
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.