Alert archive / North Carolina / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 29, NWS Wakefield, VA

May 11, 2013City of Chesapeake, Virginia; Camden County, Currituck County, North Carolina

NWS Wakefield, VA issued this severe thunderstorm warning at May 11, 2013, 7:30 PM EDT for City of Chesapeake, Virginia; Camden County, Currituck County, North Carolina. It was in force for 45 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: May 11, 2013, 7:30 PM EDT (23:30 UTC)
Expired: May 11, 2013, 8:15 PM EDT
In force: 45 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Camden County, NC, Currituck County, NC, City of Chesapeake, VA

The radar

The Norfolk radar (KAKQ), 97 km from the middle of the area, began a volume at 23:32 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, 11.5 hours before the alert went out and 175 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: 166 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 1251 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 90 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 May 11, 5:00 PM EDT, 2 hours 30 minutes earlier.

Area forecast discussion, May 11, 5:00 PM EDT, 2 hours 30 minutes before

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Hazardous weather outlook, May 11, 3:57 PM EDT, 3 hours 33 minutes before

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In the hours before

Special weather statement, May 11, 5:43 PM EDT, 1 hour 47 minutes before

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Local storm report, May 11, 5:49 PM EDT, 1 hour 41 minutes before

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Local storm report, May 11, 6:00 PM EDT, 1 hour 30 minutes before

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Special weather statement, May 11, 6:06 PM EDT, 1 hour 24 minutes before

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Special weather statement, May 11, 6:43 PM EDT, 47 minutes before

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Special weather statement, May 11, 6:56 PM EDT, 34 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
May 10, 9:10 PM EDT	Special Weather Statement	AKQ	Fluvanna, Goochland, Louisa	50 min
May 11, 4:31 PM EDT	Special Weather Statement	AKQ	Prince Edward	59 min
May 11, 5:03 PM EDT	Severe Thunderstorm Warning	AKQ	Lunenburg, Nottoway, Prince Edward	42 min
May 11, 5:21 PM EDT	Severe Thunderstorm Warning	AKQ	Nottoway	39 min
May 11, 5:43 PM EDT	Special Weather Statement	AKQ	Dinwiddie	62 min
May 11, 5:52 PM EDT	Severe Thunderstorm Warning	AKQ	Dinwiddie, Nottoway	38 min
May 11, 6:06 PM EDT	Special Weather Statement	AKQ	City of Chesapeake, City of Virginia Beach	39 min
May 11, 6:26 PM EDT	Severe Thunderstorm Warning	AKQ	Dinwiddie, Prince George, City of Petersburg	49 min
May 11, 6:56 PM EDT	Special Weather Statement	AKQ	City of Chesapeake	64 min
May 11, 7:50 PM EDT	Special Weather Statement	AKQ	City of Virginia Beach	40 min
May 11, 3:56 PM EDT	Special Weather Statement	AKQ	Worcester	34 min
May 11, 2:38 PM EDT	Special Weather Statement	AKQ	Camden, Currituck, Pasquotank, Perquimans	67 min
May 11, 6:43 PM EDT	Special Weather Statement	AKQ	Hertford	47 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2013 Severe Thunderstorm Warnings in Virginia, 2013 Every severe thunderstorm warning in 2013

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.