Alert archive / Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

April 10, 2021Franklin County, Henry County, City of Martinsville, Virginia; Rockingham County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Apr 10, 2021, 11:10 PM EDT for Franklin County, Henry County, City of Martinsville, Virginia; Rockingham County, North Carolina. It was in force for 35 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 10, 2021, 11:10 PM EDT (03:10 UTC)
Expired: Apr 10, 2021, 11:45 PM EDT
In force: 35 min
Issued by: NWS Blacksburg, VA

Counties Rockingham County, NC, City of Martinsville, VA, Franklin County, VA, Henry County, VA

The radar

The Roanoke radar (KFCX), 58 km from the middle of the area, began a volume at 03:11 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 00:00Z, 3.2 hours before the alert went out and 63 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: 205 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 741 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 261 m²/s²
0-3 km storm-relative helicity: 347 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

963 
WWUS81 KRNK 110310
SPSRNK

Special Weather Statement
National Weather Service BLACKSBURG VA
1110 PM EDT Sat Apr 10 2021

NCZ005-VAZ032-033-043-044-110345-
Rockingham-Henry-Franklin-Patrick-Pittsylvania-
1110 PM EDT Sat Apr 10 2021

...A LINE OF GUSTY SHOWERS WILL AFFECT ROCKINGHAM...WESTERN 
PITTSYLVANIA...HENRY...FRANKLIN AND NORTHEASTERN PATRICK COUNTIES 
AND THE CITY OF MARTINSVILLE...

At 1109 PM EDT, radar indicated showers with strong wind gusts 
located along a line extending from near Fairy Stone State Park to 
near Price to near Bethany. Movement was northeast at 45 mph.

Winds in excess of 40 mph are possible with these showers.

Locations impacted include...
Eden...
Reidsville...
Martinsville...
Rocky Mount...
Wentworth...
Mayodan...
and Madison.

If outdoors, consider seeking shelter inside a building. Wind gusts 
as high as 40 mph are capable of knocking down tree limbs and light 
outdoor objects.

LAT...LON 3625 7996 3649 8003 3654 8003 3654 8005
      3684 8018 3721 7979 3705 7960 3704 7959
      3698 7951 3630 7953 3624 7968
TIME...MOT...LOC 0309Z 221DEG 52KT 3682 8011 3654 7999 3627 7991 

$$

WP

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 8:01 PM EDT	Special Weather Statement	RNK	Patrick	29 min
Apr 10, 8:23 PM EDT	Special Weather Statement	RNK	Carroll	22 min
Apr 10, 8:43 PM EDT	Special Weather Statement	RNK	Floyd, Patrick	32 min
Apr 10, 8:45 PM EDT	Special Weather Statement	RNK	Carroll	30 min
Apr 10, 9:11 PM EDT	Areal Flood Advisory	RNK	City of Roanoke, City of Salem	4 hr
Apr 10, 10:00 PM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Grayson, Patrick, Pulaski, Smyth and 2 more	4 hr
Apr 10, 10:47 PM EDT	Special Weather Statement	RNK	Carroll	28 min
Apr 10, 11:46 PM EDT	Special Weather Statement	RNK	Pittsylvania, City of Danville	29 min
Apr 11, 12:12 AM EDT	Special Weather Statement	RNK	Pittsylvania, City of Danville	48 min
Apr 10, 9:08 PM EDT	Special Weather Statement	RNK	Ashe	37 min
Apr 10, 9:50 PM EDT	Areal Flood Warning	RNK	Watauga	7 hr

Nearby

Special Weather Statements in Virginia, 2021 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.