Alert archive / North Carolina / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 13, NWS Blacksburg, VA

April 12, 2019Caswell County, Rockingham County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 12, 2019, 3:41 PM EDT for Caswell County, Rockingham County, North Carolina. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 12, 2019, 3:41 PM EDT (19:41 UTC)
Expired: Apr 12, 2019, 4:45 PM EDT
In force: 64 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Caswell County, NC, Rockingham County, NC

The radar

The Roanoke radar (KFCX), 95 km from the middle of the area, began a volume at 19:44 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, 7.7 hours before the alert went out and 301 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 951 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 12, 3:07 PM EDT	Special Weather Statement	RNK	Henry, City of Danville, City of Martinsville	53 min
Apr 12, 4:28 PM EDT	Special Weather Statement	RNK	Pittsylvania	62 min
Apr 12, 7:16 PM EDT	Areal Flood Advisory	RNK	Grayson, Smyth	3 hr
Apr 12, 7:24 PM EDT	Special Weather Statement	RNK	Bland, Giles	51 min
Apr 12, 2:08 PM EDT	Special Weather Statement	RNK	Stokes	37 min
Apr 12, 6:27 PM EDT	Special Weather Statement	RNK	Greenbrier, Summers	33 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2019 Every severe thunderstorm warning in 2019

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.