Alert archive / North Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 93, NWS Wakefield, VA

May 22, 20174 counties in North Carolina

NWS Wakefield, VA issued this severe thunderstorm warning at May 22, 2017, 4:05 PM EDT for 4 counties in North Carolina. It was in force for 40 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 22, 2017, 4:05 PM EDT (20:05 UTC)
Expired: May 22, 2017, 4:45 PM EDT
In force: 40 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Camden County, NC, Currituck County, NC, Pasquotank County, NC, Perquimans County, NC

The radar

The Norfolk radar (KAKQ), 106 km from the middle of the area, began a volume at 20:08 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, 8.1 hours before the alert went out and 179 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: 224 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 699 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

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 22, 4:05 PM EDT, 0 minutes earlier.

Area forecast discussion, May 22, 4:05 PM EDT, 0 minutes before

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Hazardous weather outlook, May 22, 4:00 PM EDT, 5 minutes before

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In the hours before

Special weather statement, May 22, 1:27 PM EDT, 2 hours 38 minutes before

Special Weather Statement
National Weather Service Wakefield VA
127 PM EDT MON MAY 22 2017

NCZ012>014-030-031-VAZ092-093-096-221815-
Hertford-Northampton-Bertie-Gates-Chowan-Isle of
Wight-Southampton-Suffolk-
127 PM EDT MON MAY 22 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN BERTIE...
NORTHEASTERN NORTHAMPTON...HERTFORD...GATES...WESTERN CHOWAN...
SOUTHWESTERN ISLE OF WIGHT...AND SOUTHEASTERN SOUTHAMPTON COUNTIES...
THE CITY OF FRANKLIN AND THE WESTERN CITY OF SUFFOLK...

At 125 PM EDT, radar indicated that strong thunderstorms were
located along a line extending from near Courtland to 7 miles
southeast of Lewiston Woodville. Movement was northeast at 30 mph.

Very heavy rain is expected with these storms. Wind gusts in excess
of 40 mph and are possible with these storms.

These storms will be near...
  Franklin...Courtland and Hunterdale around 130 PM EDT.
  Sedley around 135 PM EDT.
  Windsor...Powellsville and Zuni around 200 PM EDT.
  Isle Of Wight around 210 PM EDT.
  Smithfield...Colerain...Harrellsville and Rockyhock around 215 PM
  EDT.

Other locations impacted by these storms include Goose Pond...
Vicksville...Whites Crossroads...Tunis...Earleys...Longview...
Menola...Newsome Store...Arrowhead Beach and Chowan Beach.

If you see lightning or hear thunder...you are at risk. Take shelter
indoors immediately. If you cannot find shelter in a building a
vehicle provides safety from lightning.

Strong wind gusts are possible with these storms. These wind gusts
are capable of knocking down tree limbs...small or weakened trees...
and blowing around trash cans...potted plants...lawn furniture and
other light outdoor objects.

LAT...LON 3676 7722 3699 7659 3605 7668 3596 7718
TIME...MOT...LOC 1725Z 232DEG 23KT 3675 7704 3603 7710

ZIMMERMAN

Special weather statement, May 22, 2:19 PM EDT, 1 hour 46 minutes before

Special Weather Statement
National Weather Service Wakefield VA
219 PM EDT MON MAY 22 2017

NCZ013>016-030>032-VAZ089-093-095>097-524-525-221915-
Hertford-Pasquotank-Bertie-Gates-Chowan-Camden-Perquimans-Surry-
Norfolk/Portsmouth-Newport News-Hampton/Poquoson-Isle of
Wight-Suffolk-Chesapeake-
219 PM EDT MON MAY 22 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN BERTIE...
GATES...NORTHWESTERN CHOWAN...NORTHWESTERN CAMDEN...WESTERN
PASQUOTANK...NORTHWESTERN PERQUIMANS...SOUTHEASTERN HERTFORD...ISLE
OF WIGHT AND SOUTHEASTERN SURRY COUNTIES...THE WEST CENTRAL CITY OF
NORFOLK...THE WESTERN CITY OF CHESAPEAKE...THE CITY OF HAMPTON...THE
SOUTHERN CITY OF NEWPORT NEWS...THE CITY OF PORTSMOUTH AND THE CITY
OF SUFFOLK...

At 219 PM EDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles northwest of Isle Of Wight to
near Ryland. Movement was northeast at 30 mph.

Wind gusts in excess of 40 mph are possible with these storms.

Locations impacted include...
Newport News, Hampton, Elizabeth City, Smithfield, Windsor, Hertford,
Winfall, Gatesville, Langley AFB, Ryland, South Mills, Deep Creek,
Churchland, Sunbury, Hampton University, Christopher Newport
University, Downtown Suffolk, Holland, Old Dominion University and
Norfolk.

Strong wind gusts are possible with these storms. These wind gusts
are capable of knocking down tree limbs...small or weakened trees...
and blowing around trash cans...potted plants...lawn furniture and
other light outdoor objects.

Motorists should use extra caution in the vicinity of these storms.
Be prepared for rapid changes in weather and road conditions. Heavy
rain could cause ponding of water on roads...and possible minor
flooding of ditches and poor drainage areas.

LAT...LON 3621 7675 3624 7672 3625 7681 3706 7683
      3710 7645 3709 7641 3711 7633 3655 7629
      3655 7631 3653 7628 3620 7626 3621 7628
      3620 7628 3615 7675
TIME...MOT...LOC 1819Z 246DEG 26KT 3698 7677 3629 7668

LSA

Special weather statement, May 22, 3:36 PM EDT, 29 minutes before

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Special weather statement, May 22, 3:51 PM EDT, 14 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 22, 1:27 PM EDT	Special Weather Statement	AKQ	Isle of Wight, Southampton, City of Franklin, City of Suffolk	48 min
May 22, 2:19 PM EDT	Special Weather Statement	AKQ	Isle of Wight, City of Chesapeake, City of Newport News, City of Portsmouth, City of Suffolk	56 min
May 22, 2:19 PM EDT	Severe Thunderstorm Warning	AKQ	Isle of Wight, City of Chesapeake, City of Suffolk	41 min
May 22, 2:32 PM EDT	Special Marine Warning	AKQ		58 min
May 22, 2:46 PM EDT	Severe Thunderstorm Warning	AKQ	Isle of Wight, City of Chesapeake, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson and 3 more	44 min
May 22, 3:08 PM EDT	Special Marine Warning	AKQ		97 min
May 22, 3:27 PM EDT	Special Marine Warning	AKQ		93 min
May 22, 3:36 PM EDT	Special Weather Statement	AKQ	York, City of Hampton, City of Newport News, City of Poquoson	39 min
May 22, 5:25 PM EDT	Special Weather Statement	AKQ	Northampton	50 min
May 22, 2:59 PM EDT	Severe Thunderstorm Warning	AKQ	Camden, Chowan, Currituck, Gates, Pasquotank, Perquimans	46 min
May 22, 3:51 PM EDT	Special Weather Statement	AKQ	Camden, Currituck, Pasquotank	54 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2017 Every 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.