Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 148, NWS Wakefield, VA

August 19, 2020Southampton County, Virginia; Hertford County, Northampton County, North Carolina

NWS Wakefield, VA issued this severe thunderstorm warning at Aug 19, 2020, 5:37 PM EDT for Southampton County, Virginia; Hertford County, Northampton County, North Carolina. It was in force for 38 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: Aug 19, 2020, 5:37 PM EDT (21:37 UTC)
Expired: Aug 19, 2020, 6:15 PM EDT
In force: 38 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Hertford County, NC, Northampton County, NC, Southampton County, VA

The radar

The Norfolk radar (KAKQ), 56 km from the middle of the area, began a volume at 21:41 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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.6 hours before the alert went out and 223 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: 429 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wakefield, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 19, 3:55 PM EDT, 1 hour 42 minutes earlier.

Area forecast discussion, Aug 19, 3:55 PM EDT, 1 hour 42 minutes before

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Hazardous weather outlook, Aug 19, 3:46 PM EDT, 1 hour 51 minutes before

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In the hours before

Special weather statement, Aug 19, 4:29 PM EDT, 1 hour 8 minutes before

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Local storm report, Aug 19, 4:41 PM EDT, 56 minutes before

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Special weather statement, Aug 19, 4:45 PM EDT, 52 minutes before

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Special weather statement, Aug 19, 5:22 PM EDT, 15 minutes before

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Special weather statement, Aug 19, 5:32 PM EDT, 5 minutes before

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Special weather statement, Aug 19, 5:33 PM EDT, 4 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 10:06 PM EDT	Areal Flood Warning	AKQ	Charles City, New Kent	24 hr
Aug 19, 10:14 AM EDT	Special Weather Statement	AKQ	Accomack	46 min
Aug 19, 1:39 PM EDT	Special Weather Statement	AKQ	City of Virginia Beach	51 min
Aug 19, 3:16 PM EDT	Special Weather Statement	AKQ	Dinwiddie	59 min
Aug 19, 3:49 PM EDT	Special Weather Statement	AKQ	Sussex, City of Emporia	56 min
Aug 19, 3:55 PM EDT	Areal Flood Advisory	AKQ	Dinwiddie, Prince George, Surry, Sussex	3 hr
Aug 19, 4:29 PM EDT	Special Weather Statement	AKQ	Brunswick, Greensville, City of Emporia	61 min
Aug 19, 4:45 PM EDT	Special Weather Statement	AKQ	Accomack	45 min
Aug 19, 4:58 PM EDT	Areal Flood Advisory	AKQ	Greensville, City of Emporia	3 hr
Aug 19, 5:05 PM EDT	Areal Flood Advisory	AKQ	James City, Surry	3 hr
Aug 19, 5:32 PM EDT	Special Weather Statement	AKQ	Southampton	43 min
Aug 19, 5:33 PM EDT	Special Weather Statement	AKQ	Isle of Wight	42 min
Aug 19, 5:49 PM EDT	Areal Flood Advisory	AKQ	Brunswick	116 min
Aug 19, 6:14 PM EDT	Special Weather Statement	AKQ	City of Franklin, City of Suffolk	46 min
Aug 19, 6:04 PM EDT	Special Weather Statement	AKQ	Northampton	41 min
Aug 19, 6:45 PM EDT	Special Weather Statement	AKQ	Hertford	60 min
Aug 19, 8:34 AM EDT	Special Weather Statement	AKQ	Worcester	41 min
Aug 19, 9:45 AM EDT	Special Weather Statement	AKQ	Dorchester	45 min
Aug 19, 10:15 AM EDT	Special Weather Statement	AKQ	Dorchester, Wicomico	45 min
Aug 19, 10:20 AM EDT	Severe Thunderstorm Warning	AKQ	Dorchester, Wicomico	40 min
Aug 19, 10:59 AM EDT	Special Weather Statement	AKQ	Worcester	46 min
Aug 19, 11:18 AM EDT	Special Weather Statement	AKQ	Worcester	42 min
Aug 19, 5:22 PM EDT	Special Weather Statement	AKQ	Worcester	38 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2020 Severe Thunderstorm Warnings in Virginia, 2020 Every severe thunderstorm warning 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.