Alert archive / North Carolina / Tornado Warnings in 2021

Tornado Warning 1, NWS Raleigh, NC

March 18, 2021Davidson County, Forsyth County, Guilford County, North Carolina

NWS Raleigh, NC issued this tornado warning at Mar 18, 2021, 4:41 PM EDT for Davidson County, Forsyth County, Guilford County, North Carolina. It was in force for 31 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, 4:41 PM EDT (20:41 UTC)
Expired
Mar 18, 2021, 5:12 PM EDT
In force
31 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Davidson County, NC, Forsyth County, NC, Guilford County, NC

The radar

The Roanoke radar (KFCX), 106 km from the middle of the area, began a volume at 20:42 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, 8.7 hours before the alert went out and 18 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2021-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2021-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 470 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

849 
WFUS52 KRAH 182041
TORRAH
NCC057-067-081-182130-
/O.NEW.KRAH.TO.W.0001.210318T2041Z-210318T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Raleigh NC
441 PM EDT Thu Mar 18 2021

The National Weather Service in Raleigh has issued a

* Tornado Warning for...
  Eastern Forsyth County in central North Carolina...
  Northeastern Davidson County in central North Carolina...
  Northwestern Guilford County in central North Carolina...

* Until 530 PM EDT.
    
* At 440 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles north of Lexington, moving northeast at 50 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.

* This dangerous storm will be near...
  High Point around 455 PM EDT.
  Kernersville around 500 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Welcome, Lake Brandt, Sedge Garden, Stokesdale and Summerfield.

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 3626 8009 3625 7977 3578 8018 3587 8035
TIME...MOT...LOC 2040Z 207DEG 45KT 3593 8023 

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

$$

Leins
2 follow-up statements
928 
WWUS52 KRAH 182049
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
449 PM EDT Thu Mar 18 2021

NCC057-067-081-182130-
/O.CON.KRAH.TO.W.0001.000000T0000Z-210318T2130Z/
Forsyth NC-Davidson NC-Guilford NC-
449 PM EDT Thu Mar 18 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR EASTERN
FORSYTH...NORTHEASTERN DAVIDSON AND NORTHWESTERN GUILFORD COUNTIES...
    
At 449 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Thomasville, or 9 miles west of High Point, 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.

This dangerous storm will be near...
  High Point around 505 PM EDT.
  Kernersville around 510 PM EDT.
  Greensboro around 525 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Welcome, Lake Brandt, Sedge Garden, Stokesdale and Summerfield.

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 3626 8009 3625 7977 3578 8018 3587 8035
TIME...MOT...LOC 2049Z 220DEG 35KT 3594 8018 

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

$$

Leins
534 
WWUS52 KRAH 182112
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
512 PM EDT Thu Mar 18 2021

NCC057-067-081-182121-
/O.CAN.KRAH.TO.W.0001.000000T0000Z-210318T2130Z/
Forsyth NC-Davidson NC-Guilford NC-
512 PM EDT Thu Mar 18 2021

...THE TORNADO WARNING FOR EASTERN FORSYTH...NORTHEASTERN DAVIDSON
AND NORTHWESTERN GUILFORD COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 900 PM EDT for central North
Carolina.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Raleigh.

Remember, a Tornado Warning still remains in effect for Guilford 
County until 6pm.

LAT...LON 3626 8009 3625 7977 3578 8018 3587 8035
TIME...MOT...LOC 2110Z 207DEG 45KT 3619 8002 

$$

Green

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 3:55 PM EDTSpecial Weather StatementRAHDavidson, Forsyth65 min
Mar 18, 4:54 PM EDTTornado WarningRAHGuilford, Randolph66 min
Mar 18, 5:07 PM EDTSevere Thunderstorm WarningRAHHalifax23 min
Mar 18, 5:13 PM EDTSevere Thunderstorm WarningRAHAlamance, Chatham, Davidson, Guilford, Randolph62 min
Mar 18, 5:34 PM EDTTornado WarningRAHAlamance, Guilford26 min
Mar 18, 5:37 PM EDTSevere Thunderstorm WarningRAHMontgomery, Randolph, Stanly38 min
Mar 18, 5:58 PM EDTTornado WarningRAHAlamance, Durham, Orange, Person62 min
Mar 18, 6:07 PM EDTSevere Thunderstorm WarningRAHAnson, Richmond38 min
Mar 18, 6:09 PM EDTSevere Thunderstorm WarningRAHAlamance, Orange66 min
Mar 18, 6:13 PM EDTSevere Thunderstorm WarningRAHMontgomery, Moore, Randolph, Stanly47 min
Mar 18, 6:39 PM EDTTornado WarningRAHDurham, Orange34 min
Mar 18, 6:41 PM EDTTornado WarningRAHGranville34 min
Mar 18, 6:45 PM EDTSevere Thunderstorm WarningRAHAnson, Hoke, Montgomery, Moore, Richmond45 min
Mar 18, 6:57 PM EDTTornado WarningRAHGranville48 min
Mar 18, 6:59 PM EDTSevere Thunderstorm WarningRAHAlamance, Chatham, Orange, Randolph21 min
Mar 18, 7:11 PM EDTTornado WarningRAHHalifax, Vance, Warren54 min
Mar 18, 7:12 PM EDTSpecial Weather StatementRAHDurham, Orange63 min
Mar 18, 7:25 PM EDTTornado WarningRAHFranklin, Vance, Warren47 min
Mar 18, 7:30 PM EDTSevere Thunderstorm WarningRAHCumberland, Harnett, Hoke, Lee, Moore45 min
Mar 18, 7:41 PM EDTSpecial Weather StatementRAHHoke, Scotland64 min

Nearby

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