Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Raleigh, NC

July 11, 2021Vance County, Warren County, North Carolina

NWS Raleigh, NC issued this special weather statement at Jul 11, 2021, 12:56 PM EDT for Vance County, Warren County, North Carolina. It was in force for 64 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: Jul 11, 2021, 12:56 PM EDT (16:56 UTC)
Expired: Jul 11, 2021, 2:00 PM EDT
In force: 64 min
Issued by: NWS Raleigh, NC

Counties Vance County, NC, Warren County, NC

The radar

The Raleigh/Durham radar (KRAX), 80 km from the middle of the area, began a volume at 17:00 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

Roanoke, VA (KRNK), launched 12:00Z, 4.9 hours before the alert went out and 157 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: 267 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 700 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Raleigh, NC wrote its last area forecast discussion before this special weather statement went out at Jul 11, 9:40 AM EDT, 3 hours 16 minutes earlier.

Area forecast discussion, Jul 11, 9:40 AM EDT, 3 hours 16 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Jul 11, 4:21 AM EDT, 8 hours 35 minutes before

Hazardous Weather Outlook
National Weather Service Raleigh NC
421 AM EDT Sun Jul 11 2021

NCZ007>011-021>028-038>043-073>078-083>086-088-089-120900-
Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance-
Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham-Wake-
Johnston-Wilson-Stanly-Montgomery-Moore-Lee-Harnett-Wayne-Anson-
Richmond-Scotland-Hoke-Cumberland-Sampson-
421 AM EDT Sun Jul 11 2021

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 11, 12:56 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Raleigh NC
1256 PM EDT Sun Jul 11 2021

NCZ009-010-111800-
Vance NC-Warren NC-
1256 PM EDT Sun Jul 11 2021

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL VANCE AND WARREN
COUNTIES UNTIL 200 PM EDT...

At 1255 PM EDT, Doppler radar was tracking a strong thunderstorm near
Norlina, or 9 miles northwest of Warrenton, moving northeast at 20
mph.

Wind gusts up to 40 mph will be possible with this storm.

Heavy rain and minor flooding and deadly cloud to ground lightning
will also be possible with this storm.

Locations impacted include...
Henderson, Warrenton, Norlina, Littleton, Middleburg, Macon,
Gillburg, Afton, Steele Creek Marina & Campground and Kerr Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
light outdoor objects.

Boaters on the open water and those camping outdoors are especially
vulnerable to the dangers of lightning. Seek harbor immediately and
find safe shelter in a nearby building or vehicle.

&&

LAT...LON 3654 7790 3644 7792 3639 7791 3630 7794
      3622 7800 3621 7809 3622 7812 3625 7813
      3624 7816 3626 7817 3625 7819 3627 7831
      3623 7834 3623 7842 3654 7845
TIME...MOT...LOC 1655Z 237DEG 17KT 3647 7831

10

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 11, 2:08 PM EDT	Special Weather Statement	RAH	Edgecombe	52 min
Jul 11, 3:24 PM EDT	Special Weather Statement	RAH	Johnston	66 min
Jul 11, 4:11 PM EDT	Special Weather Statement	RAH	Person	64 min
Jul 11, 4:17 PM EDT	Special Weather Statement	RAH	Johnston	58 min
Jul 11, 4:38 PM EDT	Special Weather Statement	RAH	Johnston	67 min
Jul 11, 4:56 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Wayne	20 min
Jul 11, 5:59 PM EDT	Special Weather Statement	RAH	Vance	61 min

Nearby

Special Weather Statements in North Carolina, 2021 Every special weather statement in 2021

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.