Alert archive / North Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Raleigh, NC

August 8, 2020Franklin County, Nash County, North Carolina

NWS Raleigh, NC issued this special weather statement at Aug 8, 2020, 5:06 PM EDT for Franklin County, Nash County, North Carolina. It was in force for 54 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: Aug 8, 2020, 5:06 PM EDT (21:06 UTC)
Expired: Aug 8, 2020, 6:00 PM EDT
In force: 54 min
Issued by: NWS Raleigh, NC

Counties Franklin County, NC, Nash County, NC

The radar

The Raleigh/Durham radar (KRAX), 46 km from the middle of the area, began a volume at 21:10 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.1 hours before the alert went out and 139 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: 551 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Aug 8, 4:09 PM EDT, 57 minutes earlier.

Area forecast discussion, Aug 8, 4:09 PM EDT, 57 minutes before

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Hazardous weather outlook, Aug 8, 9:02 AM EDT, 8 hours 4 minutes before

Hazardous Weather Outlook
National Weather Service Raleigh NC
902 AM EDT Sat Aug 8 2020

NCZ007>011-021>028-038>043-073>078-083>086-088-089-091315-
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-
902 AM EDT Sat Aug 8 2020

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...Sunday through Friday.

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, Aug 8, 5:06 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Raleigh NC
506 PM EDT Sat Aug 8 2020

NCZ026-027-041-082200-
Nash NC-Franklin NC-Wake NC-
506 PM EDT Sat Aug 8 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WESTERN NASH...
NORTHEASTERN WAKE AND FRANKLIN COUNTIES UNTIL 600 PM EDT...

At 506 PM EDT, Doppler radar was tracking a line of strong
thunderstorms along a line extending from near Franklinton to 7 miles
southeast of Creedmoor to near Wake Forest. Movement was east at 15
mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Nashville, Louisburg, Wake Forest, Franklinton, Bunn, Rolesville,
Spring Hope, Youngsville, Castalia and Pilot.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning, especially in urban areas where prolonged heavy rain
can quickly lead to flooding.

&&

LAT...LON 3615 7796 3582 7796 3579 7803 3592 7851
      3601 7868 3606 7865 3602 7855 3608 7854
      3618 7849 3616 7846 3616 7842 3617 7841
      3620 7840
TIME...MOT...LOC 2106Z 285DEG 12KT 3614 7849 3605 7858 3599 7862 3595
7852

Green

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 9:07 PM EDT	Special Weather Statement	RAH	Sampson	38 min
Aug 7, 11:59 PM EDT	Special Weather Statement	RAH	Lee, Moore	61 min
Aug 8, 2:22 AM EDT	Areal Flood Advisory	RAH	Guilford, Randolph	106 min

Nearby

Special Weather Statements in North Carolina, 2020 Every special weather statement in 2020

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.