Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 113, NWS Raleigh, NC

August 14, 2021Chatham County, Harnett County, Wake County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Aug 14, 2021, 3:27 PM EDT for Chatham County, Harnett County, Wake County, North Carolina. It was in force for 37 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: Aug 14, 2021, 3:27 PM EDT (19:27 UTC)
Expired: Aug 14, 2021, 4:04 PM EDT
In force: 37 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

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

The radar

The Raleigh/Durham radar (KRAX), 31 km from the middle of the area, began a volume at 19:30 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
Aug 14, 3:36 PM EDT	TSTM WND DMG	4 S New Hill, NC	A LARGE TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF AVENT FERRY RD AND CENTER HILL DR. THE ROAD IS CLOSED BETWEEN CENTER HILL DR AND NEW HILL HOLLEMAN RD. TIME ESTIMATED BY RADAR.

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, 7.5 hours before the alert went out and 106 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: 1624 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 954 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

789 
WUUS52 KRAH 141927
SVRRAH
NCC037-085-183-142015-
/O.NEW.KRAH.SV.W.0113.210814T1927Z-210814T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
327 PM EDT Sat Aug 14 2021

The National Weather Service in Raleigh has issued a

* Severe Thunderstorm Warning for...
  North central Harnett County in central North Carolina...
  Southwestern Wake County in central North Carolina...
  East central Chatham County in central North Carolina...

* Until 415 PM EDT.

* At 327 PM EDT, a severe thunderstorm was located near
  Fuquay-Varina, or 8 miles south of Cary, moving southwest at 10
  mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Cary, Fuquay-Varina, Apex, Holly Springs, New Hill, Lake Wheeler,
  Harris Lake Boat Launch, Shearon Harris Reservoir and Duncan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3577 7883 3572 7873 3564 7865 3556 7875
      3551 7887 3563 7906 3573 7896
TIME...MOT...LOC 1927Z 056DEG 10KT 3566 7885 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kren

3 follow-up statements

082 
WWUS52 KRAH 141952
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
352 PM EDT Sat Aug 14 2021

NCC037-085-142001-
/O.CAN.KRAH.SV.W.0113.000000T0000Z-210814T2015Z/
Harnett NC-Chatham NC-
352 PM EDT Sat Aug 14 2021

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

LAT...LON 3572 7873 3564 7865 3556 7875 3554 7879
      3561 7899 3567 7897 3571 7894 3575 7883
TIME...MOT...LOC 1951Z 056DEG 10KT 3562 7892 

$$

NCC183-142015-
/O.CON.KRAH.SV.W.0113.000000T0000Z-210814T2015Z/
Wake NC-
352 PM EDT Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHWESTERN WAKE COUNTY...

At 351 PM EDT, a severe thunderstorm was located 7 miles west of
Fuquay-Varina, or 12 miles southwest of Cary, moving southwest at 10
mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Cary, Fuquay-Varina, Apex, Holly Springs, New Hill, Lake Wheeler,
Harris Lake Boat Launch and Shearon Harris Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3572 7873 3564 7865 3556 7875 3554 7879
      3561 7899 3567 7897 3571 7894 3575 7883
TIME...MOT...LOC 1951Z 056DEG 10KT 3562 7892 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kren

061 
WWUS52 KRAH 141957
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
357 PM EDT Sat Aug 14 2021

NCC183-142015-
/O.CON.KRAH.SV.W.0113.000000T0000Z-210814T2015Z/
Wake NC-
357 PM EDT Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHWESTERN WAKE COUNTY...

At 357 PM EDT, a severe thunderstorm was located 8 miles west of
Fuquay-Varina, or 13 miles southwest of Cary, moving southwest at 10
mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Cary, Fuquay-Varina, Apex, Holly Springs and Lake Wheeler. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3572 7873 3564 7865 3556 7875 3567 7889
      3575 7883
TIME...MOT...LOC 1957Z 056DEG 10KT 3561 7894 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kren

574 
WWUS52 KRAH 142004
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
404 PM EDT Sat Aug 14 2021

NCC183-142014-
/O.CAN.KRAH.SV.W.0113.000000T0000Z-210814T2015Z/
Wake NC-
404 PM EDT Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WAKE 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 heavy rain is
still possible with this thunderstorm.

LAT...LON 3572 7873 3564 7865 3556 7875 3567 7889
      3575 7883
TIME...MOT...LOC 2002Z 056DEG 10KT 3560 7896 

$$

Kren

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 8:56 PM EDT	Special Weather Statement	RAH	Vance	64 min
Aug 13, 9:36 PM EDT	Special Weather Statement	RAH	Stanly	24 min
Aug 13, 10:11 PM EDT	Special Weather Statement	RAH	Stanly	34 min
Aug 13, 10:45 PM EDT	Special Weather Statement	RAH	Montgomery	45 min
Aug 13, 11:26 PM EDT	Special Weather Statement	RAH	Montgomery, Moore	64 min
Aug 14, 12:03 AM EDT	Special Weather Statement	RAH	Granville	42 min
Aug 14, 12:37 AM EDT	Severe Thunderstorm Warning	RAH	Davidson, Montgomery, Stanly	68 min
Aug 14, 4:01 AM EDT	Heat Advisory	RAH	Chatham, Cumberland, Durham, Edgecombe, Franklin, Granville and 14 more	14 hr
Aug 14, 1:46 PM EDT	Special Weather Statement	RAH	Moore	44 min
Aug 14, 1:47 PM EDT	Special Weather Statement	RAH	Wake	43 min
Aug 14, 2:09 PM EDT	Severe Thunderstorm Warning	RAH	Anson, Stanly	51 min
Aug 14, 2:15 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Johnston, Nash, Wake	45 min
Aug 14, 2:33 PM EDT	Flash Flood Warning Considerable damage threat	RAH	Franklin, Wake	2 hr
Aug 14, 2:50 PM EDT	Severe Thunderstorm Warning	RAH	Wake	40 min
Aug 14, 2:55 PM EDT	Special Weather Statement	RAH	Stanly	65 min
Aug 14, 3:01 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Granville, Wake	44 min
Aug 14, 3:25 PM EDT	Flash Flood Warning Considerable damage threat	RAH	Chatham, Durham, Wake	3 hr
Aug 14, 3:39 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Durham, Wake	51 min
Aug 14, 3:45 PM EDT	Special Weather Statement	RAH	Durham	60 min
Aug 14, 3:53 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Granville, Wake	29 min
Aug 14, 4:08 PM EDT	Areal Flood Advisory	RAH	Anson, Richmond	70 min
Aug 14, 4:08 PM EDT	Special Weather Statement	RAH	Anson, Richmond	52 min
Aug 14, 4:38 PM EDT	Special Weather Statement	RAH	Forsyth	67 min
Aug 14, 4:44 PM EDT	Special Weather Statement	RAH	Wake	61 min
Aug 14, 4:50 PM EDT	Severe Thunderstorm Warning	RAH	Forsyth	40 min
Aug 14, 5:19 PM EDT	Severe Thunderstorm Warning	RAH	Alamance	19 min
Aug 14, 5:24 PM EDT	Areal Flood Advisory	RAH	Forsyth	2 hr
Aug 14, 6:25 PM EDT	Special Weather Statement	RAH	Guilford	35 min
Aug 14, 6:32 PM EDT	Areal Flood Advisory	RAH	Guilford	118 min
Aug 14, 6:48 PM EDT	Special Weather Statement	RAH	Guilford	57 min
Aug 14, 7:23 PM EDT	Flash Flood Warning Considerable damage threat	RAH	Guilford	2 hr

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.