Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 8, NWS Raleigh, NC

March 18, 20214 counties in North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Mar 18, 2021, 6:13 PM EDT for 4 counties in North Carolina. It was in force for 47 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, 6:13 PM EDT (22:13 UTC)
Expired
Mar 18, 2021, 7:00 PM EDT
In force
47 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Montgomery County, NC, Moore County, NC, Randolph County, NC, Stanly County, NC

The radar

The Raleigh/Durham radar (KRAX), 136 km from the middle of the area, began a volume at 22:15 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 18, 4:45 PM EDTTornado WatchSPC4 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.2 hours before the alert went out and 76 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.

277 
WUUS52 KRAH 182213
SVRRAH
NCC123-125-151-167-182300-
/O.NEW.KRAH.SV.W.0008.210318T2213Z-210318T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
613 PM EDT Thu Mar 18 2021

The National Weather Service in Raleigh has issued a

* Severe Thunderstorm Warning for...
  Northwestern Moore County in central North Carolina...
  Northern Montgomery County in central North Carolina...
  South central Randolph County in central North Carolina...
  Northeastern Stanly County in central North Carolina...

* Until 700 PM EDT.

* At 613 PM EDT, a severe thunderstorm was located near Badin Lake,
  moving east at 30 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Albemarle, Troy, North Carolina Zoo, Badin Lake, Biscoe, Seagrove,
  Badin, Star, Steeds and Eldorado.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For your protection move to an interior room on the lowest floor of a
building.

Straight line winds can blow down trees, power lines, and damage
mobile homes and other buildings. Seek shelter in a sturdy structure
until the storm has passed. Stay away from windows as flying debris
generated by damaging winds can be deadly.

&&

LAT...LON 3529 8013 3543 8022 3566 7971 3534 7959
TIME...MOT...LOC 2213Z 248DEG 28KT 3538 8009 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

JD
2 follow-up statements
498 
WWUS52 KRAH 182225
SVSRAH

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

NCC167-182234-
/O.CAN.KRAH.SV.W.0008.000000T0000Z-210318T2300Z/
Stanly NC-
625 PM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN STANLY COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

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

LAT...LON 3566 7971 3538 7961 3534 8005 3535 8007
      3536 8007 3537 8005 3539 8007 3540 8009
      3542 8009 3543 8010 3544 8010 3545 8011
      3547 8011
TIME...MOT...LOC 2224Z 248DEG 28KT 3541 7999 

$$

NCC123-125-151-182300-
/O.CON.KRAH.SV.W.0008.000000T0000Z-210318T2300Z/
Moore NC-Montgomery NC-Randolph NC-
625 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR NORTHWESTERN MOORE...NORTHERN MONTGOMERY AND SOUTH CENTRAL
RANDOLPH COUNTIES...

At 624 PM EDT, a severe thunderstorm was located near Troy, moving
east at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Troy, North Carolina Zoo, Badin Lake, Biscoe, Seagrove, Star, Steeds,
Eldorado, Morrow Mountain State Park and Lake Tillery.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For your protection move to an interior room on the lowest floor of a
building.

Straight line winds can blow down trees, power lines, and damage
mobile homes and other buildings. Seek shelter in a sturdy structure
until the storm has passed. Stay away from windows as flying debris
generated by damaging winds can be deadly.

&&

LAT...LON 3566 7971 3538 7961 3534 8005 3535 8007
      3536 8007 3537 8005 3539 8007 3540 8009
      3542 8009 3543 8010 3544 8010 3545 8011
      3547 8011
TIME...MOT...LOC 2224Z 248DEG 28KT 3541 7999 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

JD
477 
WWUS52 KRAH 182302
SVSRAH

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

NCC123-125-151-182311-
/O.EXP.KRAH.SV.W.0008.000000T0000Z-210318T2300Z/
Moore NC-Montgomery NC-Randolph NC-
702 PM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MOORE...NORTHERN
MONTGOMERY AND SOUTH CENTRAL RANDOLPH COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.

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

Remember, a Severe Thunderstorm Warning still remains in effect for 
Southeastern Randolph County until 745 PM.

LAT...LON 3566 7971 3538 7961 3534 8005 3535 8007
      3536 8007 3537 8005 3539 8007 3540 8009
      3542 8009 3543 8010 3544 8010 3545 8011
      3547 8011
TIME...MOT...LOC 2301Z 270DEG 28KT 3551 7968 

$$

JD

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, 4:41 PM EDTTornado WarningRAHDavidson, Forsyth, Guilford31 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, 6:39 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

Severe Thunderstorm Warnings in North Carolina, 2021Every severe thunderstorm warning 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.