Alert archive / Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Wakefield, VA

September 9, 2018City of Norfolk, Virginia

NWS Wakefield, VA issued this special weather statement at Sep 9, 2018, 12:21 AM EDT for City of Norfolk, Virginia. It was in force for 39 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: Sep 9, 2018, 12:21 AM EDT (04:21 UTC)
Expired: Sep 9, 2018, 1:00 AM EDT
In force: 39 min
Issued by: NWS Wakefield, VA

County City of Norfolk, VA

The radar

The Norfolk radar (KAKQ), 74 km from the middle of the area, began a volume at 04:21 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, 4.4 hours before the alert went out and 129 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: 602 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 533 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Sep 8, 9:15 PM EDT, 3 hours 6 minutes earlier.

Area forecast discussion, Sep 8, 9:15 PM EDT, 3 hours 6 minutes before

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Hazardous weather outlook, Sep 8, 8:17 PM EDT, 4 hours 4 minutes before

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In the hours before

Special weather statement, Sep 8, 8:04 PM EDT, 4 hours 17 minutes before

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Special weather statement, Sep 8, 8:36 PM EDT, 3 hours 45 minutes before

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Special weather statement, Sep 8, 9:55 PM EDT, 2 hours 26 minutes before

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Special weather statement, Sep 8, 11:40 PM EDT, 41 minutes before

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Special weather statement, Sep 9, 12:15 AM EDT, 6 minutes before

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Special weather statement, Sep 9, 12:21 AM EDT, 0 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
Sep 8, 8:04 PM EDT	Special Weather Statement	AKQ	Greensville, City of Emporia	26 min
Sep 8, 8:36 PM EDT	Special Weather Statement	AKQ	Isle of Wight, York, City of Hampton, City of Newport News, City of Poquoson	39 min
Sep 8, 8:44 PM EDT	Areal Flood Advisory	AKQ	Isle of Wight, James City, York, City of Hampton, City of Newport News, City of Poquoson	2 hr
Sep 8, 9:55 PM EDT	Special Weather Statement	AKQ	City of Norfolk, City of Portsmouth	35 min
Sep 8, 11:40 PM EDT	Special Weather Statement	AKQ	City of Franklin	50 min
Sep 9, 12:15 AM EDT	Special Weather Statement	AKQ	City of Newport News	45 min
Sep 9, 12:39 AM EDT	Areal Flood Advisory	AKQ	City of Norfolk	3 hr
Sep 9, 1:23 AM EDT	Special Weather Statement	AKQ	City of Virginia Beach	52 min
Sep 9, 1:26 AM EDT	Special Weather Statement	AKQ	City of Newport News	49 min
Sep 9, 1:29 AM EDT	Areal Flood Advisory	AKQ	Isle of Wight	3 hr
Sep 9, 1:42 AM EDT	Areal Flood Advisory	AKQ	City of Virginia Beach	3 hr
Sep 9, 5:10 AM EDT	Areal Flood Advisory	AKQ	York, City of Hampton, City of Newport News, City of Poquoson	3 hr
Sep 9, 5:35 AM EDT	Coastal Flood Statement	AKQ	Accomack, Gloucester, Lancaster, Mathews, Middlesex, Northampton and 5 more	7 hr
Sep 9, 5:35 AM EDT	Coastal Flood Statement	AKQ	Northumberland, Westmoreland	7 hr
Sep 9, 8:12 AM EDT	Areal Flood Warning	AKQ	City of Hampton, City of Poquoson	3 hr
Sep 9, 8:58 AM EDT	Special Marine Warning	AKQ		62 min
Sep 9, 9:09 AM EDT	Areal Flood Advisory	AKQ	Gloucester	3 hr
Sep 9, 9:39 AM EDT	Special Weather Statement	AKQ	York	51 min
Sep 9, 9:41 AM EDT	Special Weather Statement	AKQ	Lancaster, Northumberland	49 min
Sep 9, 9:48 AM EDT	Special Marine Warning	AKQ		57 min
Sep 9, 10:09 AM EDT	Small Craft Advisory	AKQ		6 hr
Sep 9, 10:12 AM EDT	Special Marine Warning	AKQ		63 min
Sep 9, 10:16 AM EDT	Special Marine Warning	AKQ		59 min
Sep 9, 10:25 AM EDT	Areal Flood Advisory	AKQ	Lancaster, Middlesex, Northumberland	110 min
Sep 9, 10:50 AM EDT	Special Marine Warning	AKQ		85 min
Sep 9, 11:02 AM EDT	Tornado Warning	AKQ	York	28 min
Sep 9, 11:13 AM EDT	Tornado Warning	AKQ	City of Norfolk, City of Virginia Beach	32 min
Sep 9, 11:44 AM EDT	Areal Flood Advisory	AKQ	Lancaster, Northumberland	2 hr
Sep 9, 12:18 PM EDT	Special Marine Warning	AKQ		57 min
Sep 9, 12:19 PM EDT	Coastal Flood Warning	AKQ	Accomack, Gloucester, Lancaster, Mathews, Middlesex, Northampton and 4 more	56 hr
Sep 9, 12:19 PM EDT	Coastal Flood Advisory	AKQ	James City, Surry, York, City of Chesapeake, City of Hampton, City of Newport News and 3 more	16 hr
Sep 9, 12:21 PM EDT	Special Marine Warning	AKQ		54 min
Sep 9, 12:40 PM EDT	Flash Flood Warning	AKQ	Lancaster	3 hr
Sep 9, 1:14 PM EDT	Areal Flood Advisory	AKQ	City of Virginia Beach	2 hr
Sep 9, 1:14 PM EDT	Special Marine Warning	AKQ		91 min
Sep 9, 1:17 PM EDT	Special Marine Warning	AKQ		58 min
Sep 9, 1:37 PM EDT	Special Weather Statement	AKQ	Northampton	38 min
Sep 9, 3:40 PM EDT	Special Marine Warning	AKQ		65 min
Sep 9, 5:19 PM EDT	Special Weather Statement	AKQ	Northampton	26 min
Sep 9, 5:35 PM EDT	Special Weather Statement	AKQ	Northampton	40 min
Sep 9, 6:39 PM EDT	Special Weather Statement	AKQ	Northampton	51 min
Sep 9, 7:01 PM EDT	Special Weather Statement	AKQ	City of Virginia Beach	29 min

Nearby

Special Weather Statements in Virginia, 2018 Every special weather statement 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.