Alert archive / South Carolina / Dense Smoke Advisories in 2026

Dense Smoke Advisory 2, NWS Charleston, SC

July 20, 2026Berkeley County, South Carolina

NWS Charleston, SC issued this dense smoke advisory at Jul 20, 2026, 3:00 PM EDT for Berkeley County, South Carolina. It took effect at Jul 20, 2026, 8:00 PM EDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Jul 20, 2026, 3:00 PM EDT (19:00 UTC)
In effect from: Jul 20, 2026, 8:00 PM EDT
Expired: Jul 21, 2026, 10:00 AM EDT
In force: 14 hr
Issued by: NWS Charleston, SC

County Berkeley County, SC

The radar

The Charleston,SC radar (KCLX), 118 km from the middle of the area, began a volume at 19:04 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

Newport, NC (KMHX), launched 12:00Z, 7.0 hours before the alert went out and 333 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: 1678 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.1

Open this sounding in Storm Lab

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 2:22 PM EDT	Small Craft Advisory	CHS		63 hr
Jul 20, 3:03 PM EDT	Special Weather Statement	CHS	Dorchester	27 min
Jul 20, 3:27 PM EDT	Special Weather Statement	CHS	Dorchester	33 min
Jul 20, 5:58 PM EDT	Special Weather Statement	CHS	Tattnall	32 min
Jul 20, 6:25 PM EDT	Special Weather Statement	CHS	Tattnall	35 min
Jul 20, 6:39 PM EDT	Severe Thunderstorm Warning	CHS	Evans, Tattnall	34 min
Jul 20, 7:22 PM EDT	Special Weather Statement	CHS	Bulloch, Candler	23 min

Nearby

Dense Smoke Advisories in South Carolina, 2026 Every dense smoke advisory in 2026

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.