Alert archive / North Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Raleigh, NC

August 19, 2020Wake County, North Carolina

NWS Raleigh, NC issued this special weather statement at Aug 19, 2020, 8:42 PM EDT for Wake County, North Carolina. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 19, 2020, 8:42 PM EDT (00:42 UTC)
Expired: Aug 19, 2020, 9:45 PM EDT
In force: 63 min
Issued by: NWS Raleigh, NC

County Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 30 km from the middle of the area, began a volume at 00:43 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.7 hours before the alert went out and 127 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: 629 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1126 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 19, 8:10 PM EDT	Special Weather Statement	RAH	Anson, Hoke, Richmond, Scotland	65 min
Aug 20, 5:59 PM EDT	Areal Flood Advisory	RAH	Halifax	2 hr

Nearby

Special Weather Statements in North Carolina, 2020 Every special weather statement 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.