Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 13, NWS Raleigh, NC

March 25, 2021Alamance County, Guilford County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Mar 25, 2021, 7:54 PM EDT for Alamance County, Guilford County, North Carolina. It was in force for 49 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 25, 2021, 7:54 PM EDT (23:54 UTC)
Expired: Mar 25, 2021, 8:43 PM EDT
In force: 49 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Alamance County, NC, Guilford County, NC

The radar

The Raleigh/Durham radar (KRAX), 103 km from the middle of the area, began a volume at 23:57 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, 11.9 hours before the alert went out and 37 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: 1 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 703 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

187 
WUUS52 KRAH 252354
SVRRAH
NCC001-081-260100-
/O.NEW.KRAH.SV.W.0013.210325T2354Z-210326T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
754 PM EDT Thu Mar 25 2021

The National Weather Service in Raleigh has issued a

* Severe Thunderstorm Warning for...
  Central Alamance County in central North Carolina...
  Southeastern Guilford County in central North Carolina...

* Until 900 PM EDT.

* At 754 PM EDT, a severe thunderstorm was located over McLeansville,
  or 9 miles east of Greensboro, moving east at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Greensboro, Burlington, Graham, Mebane, McLeansville, Elon,
  Gibsonville, Haw River, Swepsonville and Alamance.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

LAT...LON 3623 7926 3596 7927 3598 7970 3607 7975
      3615 7972
TIME...MOT...LOC 2354Z 265DEG 20KT 3607 7966 

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

26

3 follow-up statements

290 
WWUS52 KRAH 260015
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
815 PM EDT Thu Mar 25 2021

NCC081-260024-
/O.CAN.KRAH.SV.W.0013.000000T0000Z-210326T0100Z/
Guilford NC-
815 PM EDT Thu Mar 25 2021

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

LAT...LON 3603 7927 3604 7954 3618 7953 3623 7926
TIME...MOT...LOC 0014Z 256DEG 21KT 3611 7952 

$$

NCC001-260100-
/O.CON.KRAH.SV.W.0013.000000T0000Z-210326T0100Z/
Alamance NC-
815 PM EDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHERN ALAMANCE COUNTY...

At 814 PM EDT, a severe thunderstorm was located one mile 
northwest of Elon, moving east northeast at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Burlington, Graham, Mebane, Elon, Gibsonville, Haw River,
Swepsonville, Alamance, Lake Cammack Park & Marina and
Altamahaw-Ossipee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 3603 7927 3604 7954 3618 7953 3623 7926
TIME...MOT...LOC 0014Z 256DEG 21KT 3611 7952 

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

26

055 
WWUS52 KRAH 260033
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
833 PM EDT Thu Mar 25 2021

NCC001-260100-
/O.CON.KRAH.SV.W.0013.000000T0000Z-210326T0100Z/
Alamance NC-
833 PM EDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHEASTERN ALAMANCE COUNTY...

At 832 PM EDT, a severe thunderstorm was located four miles 
north of Burlington, moving east northeast at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Burlington, Mebane, Haw River, Lake Cammack Park & Marina and Lake
Burlington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3611 7927 3609 7939 3612 7945 3619 7945
      3623 7926
TIME...MOT...LOC 0032Z 249DEG 20KT 3616 7940 

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

26

423 
WWUS52 KRAH 260043
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
843 PM EDT Thu Mar 25 2021

NCC001-260052-
/O.CAN.KRAH.SV.W.0013.000000T0000Z-210326T0100Z/
Alamance NC-
843 PM EDT Thu Mar 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ALAMANCE COUNTY
IS CANCELLED...
                
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 has been cancelled.  However, gusty winds 
up to 40 mph are still possible with this thunderstorm.

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

LAT...LON 3611 7927 3609 7939 3612 7945 3619 7945
      3623 7926
TIME...MOT...LOC 0040Z 265DEG 20KT 3617 7933 

$$

26

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 25, 6:02 PM EDT	Special Weather Statement	RAH	Stanly	58 min
Mar 25, 6:15 PM EDT	Tornado Warning	RAH	Stanly	45 min
Mar 25, 6:18 PM EDT	Special Weather Statement	RAH	Anson	57 min
Mar 25, 6:44 PM EDT	Special Weather Statement	RAH	Stanly	46 min
Mar 25, 6:54 PM EDT	Severe Thunderstorm Warning	RAH	Anson, Davidson, Montgomery, Moore, Randolph, Richmond and 1 more	38 min
Mar 25, 7:37 PM EDT	Special Weather Statement	RAH	Guilford	38 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.