Alert archive / North Carolina / Tornado Warnings in 2021

Tornado Warning 3, NWS Blacksburg, VA

March 18, 2021Caswell County, North Carolina

NWS Blacksburg, VA issued this tornado warning at Mar 18, 2021, 6:00 PM EDT for Caswell County, North Carolina. It was in force for 22 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: Mar 18, 2021, 6:00 PM EDT (22:00 UTC)
Expired: Mar 18, 2021, 6:22 PM EDT
In force: 22 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Caswell County, NC

The radar

The Raleigh/Durham radar (KRAX), 98 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 62 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 486 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 470 m²/s²
0-3 km storm-relative helicity: 562 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

142 
WFUS51 KRNK 182200
TORRNK
NCC033-182245-
/O.NEW.KRNK.TO.W.0003.210318T2200Z-210318T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service BLACKSBURG VA
600 PM EDT Thu Mar 18 2021

The National Weather Service in BLACKSBURG has issued a

* Tornado Warning for...
  Southeastern Caswell County in north central North Carolina...

* Until 645 PM EDT.
    
* At 600 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Baynes, or 7 miles southeast of Jericho, moving
  northeast at 40 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Prospect Hill...
  Hightowers...
  Baynes...
  and Leasburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3625 7937 3641 7915 3624 7915
TIME...MOT...LOC 2200Z 236DEG 35KT 3619 7932 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

RR

2 follow-up statements

095 
WWUS51 KRNK 182211
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
611 PM EDT Thu Mar 18 2021

NCC033-182245-
/O.CON.KRNK.TO.W.0003.000000T0000Z-210318T2245Z/
Caswell NC-
611 PM EDT Thu Mar 18 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM EDT FOR 
SOUTHEASTERN CASWELL COUNTY...
    
At 611 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Prospect Hill, moving northeast at 45 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Prospect Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

&&

LAT...LON 3625 7927 3635 7915 3624 7915
TIME...MOT...LOC 2211Z 231DEG 39KT 3624 7918 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

RR

387 
WWUS51 KRNK 182222
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
622 PM EDT Thu Mar 18 2021

NCC033-182232-
/O.CAN.KRNK.TO.W.0003.000000T0000Z-210318T2245Z/
Caswell NC-
622 PM EDT Thu Mar 18 2021

...THE TORNADO WARNING FOR 
SOUTHEASTERN CASWELL COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

LAT...LON 3625 7927 3635 7915 3624 7915
TIME...MOT...LOC 2220Z 236DEG 35KT 3630 7907 

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 2:46 AM EDT	Special Weather Statement	RNK	Stokes	29 min
Mar 18, 2:47 PM EDT	Special Weather Statement	RNK	Stokes, Surry	43 min
Mar 18, 3:34 PM EDT	Special Weather Statement	RNK	Stokes, Yadkin	41 min
Mar 18, 4:15 PM EDT	Special Weather Statement	RNK	Rockingham, Stokes	30 min
Mar 18, 4:44 PM EDT	Special Weather Statement	RNK	Caswell, Rockingham	31 min
Mar 18, 5:15 PM EDT	Special Weather Statement	RNK	Caswell, Rockingham	30 min
Mar 18, 5:19 PM EDT	Severe Thunderstorm Warning	RNK	Watauga	26 min
Mar 18, 5:32 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	58 min
Mar 18, 5:37 PM EDT	Tornado Warning	RNK	Caswell, Rockingham	23 min
Mar 18, 5:42 PM EDT	Severe Thunderstorm Warning	RNK	Ashe, Watauga, Wilkes	33 min
Mar 18, 6:14 PM EDT	Special Weather Statement	RNK	Ashe	31 min
Mar 18, 6:52 PM EDT	Special Weather Statement	RNK	Alleghany	23 min

Nearby

Tornado Warnings in North Carolina, 2021 Every tornado warning in 2021 Tornadoes 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.