Alert archive / South Carolina / Frost Advisories in 2020
Frost Advisory 15, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this frost advisory at Nov 2, 2020, 11:45 AM EST for Cabarrus County, Mecklenburg County, Union County, North Carolina; 8 counties in South Carolina; 4 counties in Georgia. It took effect at Nov 3, 2020, 1:00 AM EST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Nov 2, 2020, 11:45 AM EST (16:45 UTC)
- In effect from
- Nov 3, 2020, 1:00 AM EST
- Expired
- Nov 3, 2020, 9:00 AM EST
- In force
- 8 hr
- Issued by
- NWS Greenville-Spartanburg, SC
Counties Elbert County, GA, Franklin County, GA, Hart County, GA, Stephens County, GA, Cabarrus County, NC, Mecklenburg County, NC, Union County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Greenwood County, SC, Laurens County, SC, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 36 km from the middle of the area, began a volume at 16:47 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
Charleston AFB, SC (KCHS), launched 12:00Z, 4.8 hours before the alert went out and 265 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
- 2264 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- -245 m²/s²
- 0-3 km storm-relative helicity
- -226 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this frost 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 frost advisory went out at Nov 1, 6:31 PM EST, 17 hours 14 minutes earlier.
Area forecast discussion, Nov 1, 6:31 PM EST, 17 hours 14 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 |
|---|---|---|---|---|
| Nov 2, 11:45 AM EST | Freeze Warning | GSP | Alexander, Burke, Cabarrus, Caldwell, Catawba, Cleveland and 10 more | 21 hr |
Nearby
Frost Advisories in South Carolina, 2020Frost Advisories in Georgia, 2020Frost Advisories in North Carolina, 2020Every frost advisory in 2020
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.