Alert archive / Virginia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 18, NWS Wakefield, VA

April 16, 201811 counties in Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Apr 16, 2018, 2:37 AM EDT for 11 counties in Virginia. 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: Apr 16, 2018, 2:37 AM EDT (06:37 UTC)
Expired: Apr 16, 2018, 3:15 AM EDT
In force: 38 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties City of Franklin, VA, City of Newport News, VA, City of Suffolk, VA, City of Williamsburg, VA, Gloucester County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, Southampton County, VA, Surry County, VA, York County, VA

The radar

The Norfolk radar (KAKQ), 27 km from the middle of the area, began a volume at 06:37 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 00:00Z, 6.6 hours before the alert went out and 150 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: 243 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 236 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Apr 16, 1:50 AM EDT, 47 minutes earlier.

Area forecast discussion, Apr 16, 1:50 AM EDT, 47 minutes before

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Hazardous weather outlook, Apr 16, 1:57 AM EDT, 40 minutes before

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In the hours before

Special weather statement, Apr 16, 12:29 AM EDT, 2 hours 8 minutes before

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Local storm report, Apr 16, 1:07 AM EDT, 1 hour 30 minutes before

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Special weather statement, Apr 16, 1:14 AM EDT, 1 hour 23 minutes before

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Special weather statement, Apr 16, 2:01 AM EDT, 36 minutes before

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Special weather statement, Apr 16, 2:19 AM EDT, 18 minutes before

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Special weather statement, Apr 16, 2:29 AM EDT, 8 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
Apr 15, 8:12 PM EDT	Severe Thunderstorm Warning	AKQ	Louisa	48 min
Apr 15, 8:24 PM EDT	Severe Thunderstorm Warning	AKQ	Amelia, Cumberland, Lunenburg, Nottoway, Prince Edward	36 min
Apr 15, 8:30 PM EDT	Severe Thunderstorm Warning	AKQ	Cumberland, Fluvanna, Goochland	30 min
Apr 15, 8:34 PM EDT	Special Weather Statement	AKQ	Lunenburg, Mecklenburg	41 min
Apr 15, 8:38 PM EDT	Severe Thunderstorm Warning	AKQ	Lunenburg, Mecklenburg	37 min
Apr 15, 8:59 PM EDT	Severe Thunderstorm Warning	AKQ	Amelia, Cumberland, Goochland, Louisa, Powhatan	61 min
Apr 15, 9:26 PM EDT	Special Weather Statement	AKQ	Lunenburg	49 min
Apr 15, 9:46 PM EDT	Tornado Warning	AKQ	Lunenburg, Nottoway	29 min
Apr 15, 10:14 PM EDT	Tornado Warning	AKQ	Amelia, Chesterfield, Nottoway	31 min
Apr 15, 10:21 PM EDT	Special Weather Statement	AKQ	Lunenburg, Mecklenburg	39 min
Apr 15, 10:39 PM EDT	Tornado Warning	AKQ	Amelia, Chesterfield, Goochland, Powhatan	21 min
Apr 15, 10:51 PM EDT	Special Weather Statement	AKQ	Cumberland, Goochland, Nottoway	39 min
Apr 15, 11:04 PM EDT	Tornado Warning	AKQ	Brunswick, Lunenburg, Nottoway	17 min
Apr 15, 11:22 PM EDT	Severe Thunderstorm Warning	AKQ	Goochland, Hanover, Louisa, Powhatan	23 min
Apr 15, 11:28 PM EDT	Special Weather Statement	AKQ	Amelia, Lunenburg, Mecklenburg, Nottoway	47 min
Apr 15, 11:52 PM EDT	Special Weather Statement	AKQ	Brunswick, Dinwiddie, Greensville, City of Emporia	38 min
Apr 16, 12:29 AM EDT	Special Weather Statement	AKQ	Dinwiddie, Greensville, Henrico, Prince George, Sussex, City of Colonial Heights and 3 more	46 min
Apr 16, 1:14 AM EDT	Special Weather Statement	AKQ	Charles City, Henrico, King and Queen, King William, New Kent, Prince George and 7 more	46 min
Apr 16, 2:01 AM EDT	Special Weather Statement	AKQ	Charles City, James City, New Kent, Prince George, Surry	44 min
Apr 16, 2:19 AM EDT	Special Weather Statement	AKQ	Westmoreland	11 min
Apr 16, 2:22 AM EDT	Severe Thunderstorm Warning	AKQ	Charles City, Essex, James City, King and Queen, King William, Middlesex and 1 more	38 min
Apr 16, 2:29 AM EDT	Special Marine Warning	AKQ		2 hr
Apr 16, 2:29 AM EDT	Special Weather Statement	AKQ	Isle of Wight, Surry, City of Franklin	46 min
Apr 16, 2:57 AM EDT	Special Weather Statement	AKQ	King and Queen, Richmond	48 min
Apr 16, 3:15 AM EDT	Special Weather Statement	AKQ	Gloucester, Isle of Wight, Lancaster, Mathews, Middlesex, Northumberland and 8 more	45 min
Apr 16, 3:20 AM EDT	Special Weather Statement	AKQ	Gloucester, Isle of Wight, Lancaster, Mathews, Middlesex, York and 7 more	40 min
Apr 16, 3:52 AM EDT	Special Marine Warning	AKQ		113 min
Apr 16, 4:01 AM EDT	Special Weather Statement	AKQ	City of Chesapeake, City of Norfolk, City of Portsmouth, City of Virginia Beach	44 min
Apr 16, 4:27 AM EDT	Special Marine Warning	AKQ		63 min
Apr 16, 4:45 AM EDT	Coastal Flood Advisory	AKQ	Lancaster, Northumberland, Westmoreland	25 hr
Apr 16, 4:52 AM EDT	Special Weather Statement	AKQ	Accomack	38 min
Apr 16, 5:02 AM EDT	Special Marine Warning	AKQ		88 min
Apr 16, 10:18 AM EDT	River Flood Warning	AKQ	Buckingham, Fluvanna	51 hr
Apr 16, 10:18 AM EDT	River Flood Warning	AKQ	Brunswick	37 hr
Apr 16, 5:57 PM EDT	Small Craft Advisory	AKQ		25 hr
Apr 16, 3:54 AM EDT	Special Weather Statement	AKQ	Dorchester, Wicomico	51 min
Apr 16, 4:44 AM EDT	Special Weather Statement	AKQ	Dorchester, Wicomico, Worcester	46 min
Apr 16, 5:39 AM EDT	Special Weather Statement	AKQ	Wicomico, Worcester	51 min
Apr 16, 6:35 AM EDT	Special Weather Statement	AKQ	Worcester	40 min
Apr 16, 2:44 AM EDT	Special Weather Statement	AKQ	Chowan, Gates	31 min
Apr 16, 3:43 AM EDT	Special Weather Statement	AKQ	Camden, Pasquotank, Perquimans	32 min
Apr 16, 4:59 AM EDT	Special Weather Statement	AKQ	Currituck	31 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2018 Every severe thunderstorm warning in 2018

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.