Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 29, NWS Raleigh, NC

March 28, 20214 counties in North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Mar 28, 2021, 2:45 PM EDT for 4 counties in North Carolina. It was in force for 30 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 28, 2021, 2:45 PM EDT (18:45 UTC)
Expired: Mar 28, 2021, 3:15 PM EDT
In force: 30 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Chatham County, NC, Harnett County, NC, Lee County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 18 km from the middle of the area, began a volume at 18:44 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.

What was reported inside it

Time	Report	Where	Remark
Mar 28, 2:56 PM EDT	HAIL 0.75	3 E Holly Springs, NC	PUBLIC ESTIMATED PENNY SIZED HAIL NEAR HOLLY SPRINGS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.8 hours before the alert went out and 119 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: 139 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 357 m²/s²
0-3 km storm-relative helicity: 324 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

126 
WUUS52 KRAH 281845
SVRRAH
NCC037-085-105-183-281915-
/O.NEW.KRAH.SV.W.0029.210328T1845Z-210328T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
245 PM EDT Sun Mar 28 2021

The National Weather Service in Raleigh has issued a

* Severe Thunderstorm Warning for...
  North central Harnett County in central North Carolina...
  Northeastern Lee County in central North Carolina...
  Southwestern Wake County in central North Carolina...
  Southeastern Chatham County in central North Carolina...

* Until 315 PM EDT.

* At 244 PM EDT, a severe thunderstorm was located 11 miles northeast
  of Sanford, moving northeast at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Raleigh, Cary, Garner, Fuquay-Varina, Apex, Holly Springs,
  Knightdale, Broadway, Lake Wheeler and New Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3571 7846 3571 7847 3557 7865 3545 7906
      3561 7915 3588 7855
TIME...MOT...LOC 1844Z 245DEG 46KT 3557 7902 

HAIL...<.75IN
WIND...60MPH
 
$$

Green

2 follow-up statements

458 
WWUS52 KRAH 281855
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
255 PM EDT Sun Mar 28 2021

NCC037-085-105-281905-
/O.CAN.KRAH.SV.W.0029.000000T0000Z-210328T1915Z/
Harnett NC-Lee NC-Chatham NC-
255 PM EDT Sun Mar 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL HARNETT...
NORTHEASTERN LEE AND SOUTHEASTERN CHATHAM COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3571 7846 3571 7847 3557 7865 3554 7877
      3558 7889 3569 7897 3569 7896 3588 7855
TIME...MOT...LOC 1855Z 245DEG 46KT 3563 7886 

$$

NCC183-281915-
/O.CON.KRAH.SV.W.0029.000000T0000Z-210328T1915Z/
Wake NC-
255 PM EDT Sun Mar 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR SOUTHWESTERN WAKE COUNTY...

At 255 PM EDT, a severe thunderstorm was located near Fuquay-Varina,
or 10 miles south of Cary, moving northeast at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Raleigh, Cary, Garner, Fuquay-Varina, Apex, Holly Springs,
Knightdale, Lake Wheeler, New Hill and Lake Benson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3571 7846 3571 7847 3557 7865 3554 7877
      3558 7889 3569 7897 3569 7896 3588 7855
TIME...MOT...LOC 1855Z 245DEG 46KT 3563 7886 

HAIL...<.75IN
WIND...60MPH
 
$$

Green

836 
WWUS52 KRAH 281914
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
314 PM EDT Sun Mar 28 2021

NCC183-281923-
/O.EXP.KRAH.SV.W.0029.000000T0000Z-210328T1915Z/
Wake NC-
314 PM EDT Sun Mar 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WAKE COUNTY WILL
EXPIRE AT 315 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 3571 7846 3571 7847 3557 7865 3554 7877
      3558 7889 3569 7897 3569 7896 3588 7855
TIME...MOT...LOC 1913Z 245DEG 46KT 3570 7867 

$$

CA

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 28, 2:09 AM EDT	Special Weather Statement	RAH	Anson, Montgomery, Stanly	66 min
Mar 28, 2:39 AM EDT	Special Weather Statement	RAH	Randolph	66 min
Mar 28, 3:24 AM EDT	Special Weather Statement	RAH	Alamance, Orange, Person	66 min
Mar 28, 3:26 AM EDT	Special Weather Statement	RAH	Lee, Moore	64 min
Mar 28, 4:26 AM EDT	Special Weather Statement	RAH	Harnett, Johnston	79 min
Mar 28, 5:54 AM EDT	Special Weather Statement	RAH	Franklin, Wake	51 min
Mar 28, 6:39 AM EDT	Special Weather Statement	RAH	Franklin, Halifax, Nash, Warren	66 min
Mar 28, 2:09 PM EDT	Special Weather Statement	RAH	Lee, Moore	36 min
Mar 28, 2:27 PM EDT	Special Weather Statement	RAH	Franklin	33 min
Mar 28, 2:39 PM EDT	Special Weather Statement	RAH	Harnett, Johnston, Nash, Wake	36 min
Mar 28, 2:51 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Nash	39 min
Mar 28, 3:16 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Halifax, Nash	59 min
Mar 28, 3:18 PM EDT	Special Weather Statement	RAH	Cumberland, Harnett, Hoke, Johnston, Sampson, Scotland and 1 more	57 min
Mar 28, 3:50 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Wilson	40 min
Mar 28, 3:59 PM EDT	Special Weather Statement	RAH	Cumberland, Sampson, Wayne	61 min
Mar 28, 6:31 PM EDT	Special Weather Statement	RAH	Forsyth	29 min
Mar 28, 7:00 PM EDT	Special Weather Statement	RAH	Guilford	60 min
Mar 28, 7:14 PM EDT	Special Weather Statement	RAH	Davidson, Randolph	61 min
Mar 28, 7:46 PM EDT	Special Weather Statement	RAH	Stanly	59 min
Mar 28, 7:50 PM EDT	Special Weather Statement	RAH	Granville, Person	40 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.