Alert archive / Virginia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 183, NWS Wakefield, VA

September 6, 20175 counties in Virginia; Northampton County, North Carolina

NWS Wakefield, VA issued this severe thunderstorm warning at Sep 6, 2017, 3:55 PM EDT for 5 counties in Virginia; Northampton County, North Carolina. It was in force for 50 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
Sep 6, 2017, 3:55 PM EDT (19:55 UTC)
Expired
Sep 6, 2017, 4:45 PM EDT
In force
50 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Northampton County, NC, Brunswick County, VA, City of Emporia, VA, Greensville County, VA, Southampton County, VA, Sussex County, VA

The radar

The Norfolk radar (KAKQ), 51 km from the middle of the area, began a volume at 19:56 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, 7.9 hours before the alert went out and 219 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-pSkew-T log-p diagram, Newport, NC at 12:00Z on 2017-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 239 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 12:00Z on 2017-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
239 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
1111 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 5, 8:48 PM EDTSpecial Weather StatementAKQCharles City, Middlesex42 min
Sep 5, 9:25 PM EDTSpecial Weather StatementAKQGloucester, James City, Middlesex, City of Williamsburg50 min
Sep 5, 10:14 PM EDTSpecial Weather StatementAKQCharles City, Gloucester, James City, Lancaster, Middlesex, Northumberland and 1 more46 min
Sep 5, 11:01 PM EDTSpecial Weather StatementAKQCharles City, Gloucester, Mathews, Middlesex, New Kent44 min
Sep 6, 8:01 AM EDTSpecial Weather StatementAKQCharles City, New Kent44 min
Sep 6, 3:02 PM EDTSpecial Weather StatementAKQCity of Chesapeake58 min
Sep 6, 3:37 PM EDTSpecial Weather StatementAKQGreensville, City of Emporia38 min
Sep 6, 3:45 PM EDTSpecial Marine WarningAKQ60 min
Sep 6, 3:56 PM EDTSmall Craft AdvisoryAKQ6 hr
Sep 6, 4:11 PM EDTSpecial Weather StatementAKQIsle of Wight, York, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson and 2 more49 min
Sep 6, 4:27 PM EDTSpecial Weather StatementAKQSouthampton48 min
Sep 6, 4:31 PM EDTSpecial Marine WarningAKQ59 min
Sep 6, 4:37 PM EDTSpecial Weather StatementAKQCity of Suffolk38 min
Sep 6, 4:56 PM EDTSpecial Weather StatementAKQAccomack49 min
Sep 6, 4:57 PM EDTAreal Flood AdvisoryAKQIsle of Wight, York, City of Hampton, City of Newport News, City of Poquoson, City of Suffolk3 hr
Sep 6, 4:58 PM EDTSpecial Marine WarningAKQ62 min
Sep 6, 5:18 PM EDTSpecial Weather StatementAKQCity of Suffolk42 min
Sep 6, 5:19 PM EDTSpecial Weather StatementAKQNorthampton41 min
Sep 6, 5:26 PM EDTSpecial Marine WarningAKQ64 min
Sep 6, 5:34 PM EDTSpecial Weather StatementAKQAccomack26 min
Sep 6, 5:56 PM EDTAreal Flood AdvisoryAKQAccomack, Northampton2 hr
Sep 6, 6:14 PM EDTSpecial Marine WarningAKQ61 min
Sep 6, 7:04 PM EDTSpecial Marine WarningAKQ56 min
Sep 6, 7:15 PM EDTSpecial Marine WarningAKQ75 min
Sep 6, 7:59 PM EDTSpecial Marine WarningAKQ91 min
Sep 6, 2:20 PM EDTSpecial Weather StatementAKQBertie, Chowan40 min
Sep 6, 3:04 PM EDTSpecial Weather StatementAKQPerquimans26 min
Sep 6, 3:08 PM EDTSpecial Weather StatementAKQBertie37 min
Sep 6, 3:31 PM EDTAreal Flood AdvisoryAKQChowan, Gates, Pasquotank, Perquimans119 min
Sep 6, 4:04 PM EDTSpecial Weather StatementAKQChowan, Pasquotank, Perquimans41 min
Sep 6, 5:06 PM EDTSpecial Weather StatementAKQCamden39 min
Sep 6, 6:22 PM EDTSpecial Weather StatementAKQCamden, Chowan, Pasquotank, Perquimans38 min
Sep 6, 7:01 PM EDTSpecial Weather StatementAKQCamden, Currituck29 min
Sep 6, 7:28 PM EDTSpecial Weather StatementAKQCurrituck47 min
Sep 5, 10:44 PM EDTSpecial Weather StatementAKQSomerset, Wicomico46 min
Sep 5, 11:41 PM EDTSpecial Weather StatementAKQWicomico, Worcester49 min
Sep 6, 5:15 PM EDTSpecial Weather StatementAKQWorcester45 min
Sep 6, 5:43 PM EDTAreal Flood AdvisoryAKQSomerset, Wicomico, Worcester3 hr
Sep 6, 5:50 PM EDTSpecial Weather StatementAKQWorcester25 min
Sep 6, 6:03 PM EDTSpecial Weather StatementAKQWorcester42 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2017Severe Thunderstorm Warnings in North Carolina, 2017Every severe thunderstorm warning in 2017

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.