Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Raleigh, NC

April 9, 2021Davidson County, North Carolina

NWS Raleigh, NC issued this special weather statement at Apr 9, 2021, 7:21 PM EDT for Davidson 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: Apr 9, 2021, 7:21 PM EDT (23:21 UTC)
Expired: Apr 9, 2021, 8:15 PM EDT
In force: 54 min
Issued by: NWS Raleigh, NC

County Davidson County, NC

The radar

The Roanoke radar (KFCX), 141 km from the middle of the area, began a volume at 23:21 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.4 hours before the alert went out and 50 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: 361 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1047 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

466 
WWUS82 KRAH 092321
SPSRAH

Special Weather Statement
National Weather Service Raleigh NC
721 PM EDT Fri Apr 9 2021
 
NCZ021-022-038-039-100015-
Guilford NC-Forsyth NC-Randolph NC-Davidson NC-
721 PM EDT Fri Apr 9 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN FORSYTH...
DAVIDSON...NORTHWESTERN RANDOLPH AND SOUTHWESTERN GUILFORD COUNTIES
UNTIL 815 PM EDT...

At 718 PM EDT, Doppler radar was tracking a strong thunderstorm over
Lexington, moving northeast at 20 mph. 

Public is reporting pea to half inch hail in Lexington. Wind gusts 
up to 40 mph will also be possible with this storm. 

Locations impacted include...
Winston-Salem, High Point, Lexington, Thomasville, Linwood, Archdale,
Trinity, Gordontown, High Rock Lake and Arcadia.

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
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 3616 8020 3587 7987 3561 8023 3563 8026
      3563 8028 3565 8030 3567 8031 3568 8033
      3569 8034 3571 8032 3572 8033 3572 8038
      3573 8039 3572 8042 3574 8044
TIME...MOT...LOC 2318Z 215DEG 19KT 3583 8026 

$$

JD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 3:02 PM EDT	Special Weather Statement	RAH	Scotland	58 min
Apr 9, 3:38 PM EDT	Special Weather Statement	RAH	Lee	67 min
Apr 9, 3:41 PM EDT	Special Weather Statement	RAH	Hoke, Richmond, Scotland	64 min
Apr 9, 3:57 PM EDT	Severe Thunderstorm Warning	RAH	Hoke, Moore, Richmond, Scotland	22 min
Apr 9, 4:10 PM EDT	Severe Thunderstorm Warning	RAH	Granville, Person	50 min
Apr 9, 4:29 PM EDT	Severe Thunderstorm Warning	RAH	Harnett, Johnston, Wake	46 min
Apr 9, 4:44 PM EDT	Severe Thunderstorm Warning	RAH	Granville	46 min
Apr 9, 4:49 PM EDT	Special Weather Statement	RAH	Scotland	56 min
Apr 9, 4:53 PM EDT	Areal Flood Advisory	RAH	Scotland	112 min
Apr 9, 5:09 PM EDT	Severe Thunderstorm Warning	RAH	Harnett, Johnston, Wake	51 min
Apr 9, 5:12 PM EDT	Severe Thunderstorm Warning	RAH	Granville, Vance, Warren	63 min
Apr 9, 5:23 PM EDT	Areal Flood Advisory	RAH	Harnett, Johnston, Wake	3 hr
Apr 9, 5:23 PM EDT	Special Weather Statement	RAH	Moore, Richmond	67 min
Apr 9, 5:42 PM EDT	Tornado Warning	RAH	Person	35 min
Apr 9, 5:59 PM EDT	Severe Thunderstorm Warning	RAH	Warren	46 min
Apr 9, 6:03 PM EDT	Special Weather Statement	RAH	Johnston	42 min
Apr 9, 6:21 PM EDT	Special Weather Statement	RAH	Warren	54 min
Apr 9, 6:35 PM EDT	Severe Thunderstorm Warning	RAH	Halifax	40 min
Apr 9, 6:55 PM EDT	Special Weather Statement	RAH	Person, Vance	65 min
Apr 9, 7:20 PM EDT	Special Weather Statement	RAH	Durham, Granville	55 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.