Alert archive / South Carolina / Frost Advisories in 2017
Frost Advisory 6, NWS Wilmington, NC
NWS Wilmington, NC issued this frost advisory at Nov 19, 2017, 3:12 PM EST for 6 counties in South Carolina; Columbus County, North Carolina. It took effect at Nov 20, 2017, 4:00 AM EST. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Nov 19, 2017, 3:12 PM EST (20:12 UTC)
- In effect from
- Nov 20, 2017, 4:00 AM EST
- Expired
- Nov 20, 2017, 9:00 AM EST
- In force
- 5 hr
- Issued by
- NWS Wilmington, NC
Counties Columbus County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC
The radar
The Wilmington radar (KLTX), 101 km from the middle of the area, began a volume at 20:16 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, 8.2 hours before the alert went out and 151 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
- 985 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 114 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 Wilmington, NC wrote its last area forecast discussion before this frost advisory went out at Nov 18, 6:32 PM EST, 20 hours 40 minutes earlier.
Area forecast discussion, Nov 18, 6:32 PM EST, 20 hours 40 minutes before
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</html>Hazardous weather outlook, Nov 18, 4:28 PM EST, 22 hours 44 minutes before
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</html>Nearby
Frost Advisories in South Carolina, 2017Frost Advisories in North Carolina, 2017Every frost advisory in 2017
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.