Alert archive / North Carolina / Frost Advisories in 2018
Frost Advisory 1, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this frost advisory at Apr 10, 2018, 2:51 PM EDT for 9 counties in North Carolina; Rabun County, Georgia. It took effect at Apr 11, 2018, 12:00 AM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Apr 10, 2018, 2:51 PM EDT (18:51 UTC)
- In effect from
- Apr 11, 2018, 12:00 AM EDT
- Expired
- Apr 11, 2018, 9:00 AM EDT
- In force
- 9 hr
- Issued by
- NWS Greenville-Spartanburg, SC
Counties Rabun County, GA, Buncombe County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, Swain County, NC, Transylvania County, NC
The radar
The Knoxville radar (KMRX), 93 km from the middle of the area, began a volume at 18:57 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
Nashville Metro, TN (KBNA), launched 12:00Z, 6.9 hours before the alert went out and 329 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
- 1199 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Frost Advisories in North Carolina, 2018Frost Advisories in Georgia, 2018Every frost advisory in 2018
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.