Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 3, NWS Raleigh, NC

March 18, 2021Halifax County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Mar 18, 2021, 5:07 PM EDT for Halifax County, North Carolina. It was in force for 23 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, 5:07 PM EDT (21:07 UTC)
Expired: Mar 18, 2021, 5:30 PM EDT
In force: 23 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Halifax County, NC

The radar

The Norfolk radar (KAKQ), 89 km from the middle of the area, began a volume at 21:09 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.

Issued	Product	Office	Lasted
Mar 18, 4:45 PM EDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 9.1 hours before the alert went out and 178 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: 517 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 626 m²/s²
0-3 km storm-relative helicity: 780 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

198 
WUUS52 KRAH 182107
SVRRAH
NCC083-182130-
/O.NEW.KRAH.SV.W.0003.210318T2107Z-210318T2130Z/

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

The National Weather Service in Raleigh has issued a

* Severe Thunderstorm Warning for...
  Northwestern Halifax County in central North Carolina...

* Until 530 PM EDT.

* At 506 PM EDT, a severe thunderstorm was located near Roanoke
  Rapids, moving northeast at 35 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Roanoke Rapids, Littleton, Weldon, South Weldon, Rosemary, Roanoke
  Rapids Lake and Lake Gaston.

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.

&&

LAT...LON 3650 7782 3648 7776 3649 7773 3648 7768
      3648 7765 3644 7762 3643 7759 3642 7759
      3642 7756 3641 7755 3640 7756 3631 7779
      3636 7792 3638 7791 3643 7792 3648 7791
      3651 7789
TIME...MOT...LOC 2106Z 227DEG 32KT 3645 7775 

HAIL...1.00IN
WIND...60MPH
 
$$

26

1 follow-up statement

675 
WWUS52 KRAH 182122 RRA
SVSRAH

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

NCC083-182132-
/O.EXP.KRAH.SV.W.0003.000000T0000Z-210318T2130Z/
Halifax NC-
522 PM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HALIFAX COUNTY
WILL EXPIRE AT 530 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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.

LAT...LON 3650 7782 3648 7776 3649 7773 3648 7768
      3648 7765 3644 7762 3643 7759 3642 7759
      3642 7756 3641 7755 3640 7756 3631 7779
      3636 7792 3638 7791 3643 7792 3648 7791
      3651 7789
TIME...MOT...LOC 2122Z 227DEG 32KT 3655 7762 

$$

Green

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 3:55 PM EDT	Special Weather Statement	RAH	Davidson, Forsyth	65 min
Mar 18, 4:41 PM EDT	Tornado Warning	RAH	Davidson, Forsyth, Guilford	31 min
Mar 18, 4:54 PM EDT	Tornado Warning	RAH	Guilford, Randolph	66 min
Mar 18, 5:13 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Chatham, Davidson, Guilford, Randolph	62 min
Mar 18, 5:34 PM EDT	Tornado Warning	RAH	Alamance, Guilford	26 min
Mar 18, 5:37 PM EDT	Severe Thunderstorm Warning	RAH	Montgomery, Randolph, Stanly	38 min
Mar 18, 5:58 PM EDT	Tornado Warning	RAH	Alamance, Durham, Orange, Person	62 min
Mar 18, 6:07 PM EDT	Severe Thunderstorm Warning	RAH	Anson, Richmond	38 min
Mar 18, 6:09 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Orange	66 min
Mar 18, 6:13 PM EDT	Severe Thunderstorm Warning	RAH	Montgomery, Moore, Randolph, Stanly	47 min
Mar 18, 6:39 PM EDT	Tornado Warning	RAH	Durham, Orange	34 min
Mar 18, 6:41 PM EDT	Tornado Warning	RAH	Granville	34 min
Mar 18, 6:45 PM EDT	Severe Thunderstorm Warning	RAH	Anson, Hoke, Montgomery, Moore, Richmond	45 min
Mar 18, 6:57 PM EDT	Tornado Warning	RAH	Granville	48 min
Mar 18, 6:59 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Chatham, Orange, Randolph	21 min
Mar 18, 7:11 PM EDT	Tornado Warning	RAH	Halifax, Vance, Warren	54 min
Mar 18, 7:12 PM EDT	Special Weather Statement	RAH	Durham, Orange	63 min
Mar 18, 7:25 PM EDT	Tornado Warning	RAH	Franklin, Vance, Warren	47 min
Mar 18, 7:30 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Harnett, Hoke, Lee, Moore	45 min
Mar 18, 7:41 PM EDT	Special Weather Statement	RAH	Hoke, Scotland	64 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2021 Every 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.