Alert archive / North Carolina / Tornado Warnings in 2021

Tornado Warning 17, NWS Raleigh, NC

May 10, 2021Alamance County, Chatham County, Orange County, North Carolina

NWS Raleigh, NC issued this tornado warning at May 10, 2021, 4:45 PM EDT for Alamance County, Chatham County, Orange County, North Carolina. It was in force for 30 min. 8 reports 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: May 10, 2021, 4:45 PM EDT (20:45 UTC)
Expired: May 10, 2021, 5:15 PM EDT
In force: 30 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Alamance County, NC, Chatham County, NC, Orange County, NC

The radar

The Raleigh/Durham radar (KRAX), 60 km from the middle of the area, began a volume at 20:47 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
May 10, 4:46 PM EDT	TORNADO	1 N Sutphin, NC	NWS STORM SURVEY CONFIRMED DAMAGE CONSISTENT WITH THAT OF AN EF-1 TORNADO. TORNADO WAS ON THE GROUND FOR APPROXIMATELY 1.25 MILES AND ROUGHLY 2 MINUTES.
May 10, 4:54 PM EDT	HAIL 1	6 Ese Sutphin, NC
May 10, 5:05 PM EDT	TSTM WND DMG	7 Nnw Bynum, NC	TREES DOWN ON CRAWFORD DAIRY ROAD.
May 10, 5:07 PM EDT	TSTM WND DMG	5 Wnw Fearrington, NC	A LARGE TREE WAS REPORTED DOWN ON A HOSE ALONG LAMONT NORWOOD ROAD NEAR TOBACCO ROAD.
May 10, 5:07 PM EDT	TSTM WND DMG	5 Wnw Fearrington, NC	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 5 WNW FEARRINGTON. A LARGE TREE WAS REPORTED DOWN ON A HOME ALONG LAMONT NORWOOD ROAD NEAR TOBACCO ROAD.
May 10, 5:08 PM EDT	HAIL 1	5 Nnw Bynum, NC	HAIL UP TO QUARTER SIZE REPORTED ALONG WITH UNSPECIFIED STRONG WINDS.
May 10, 5:20 PM EDT	TSTM WND DMG	3 Nw Fearrington, NC	TREES DOWN ON MANNS CHAPEL ROAD NEAR GREAT RIDGE PARKWAY.
May 10, 5:20 PM EDT	TSTM WND DMG	Fearrington, NC	TREES DOWN ON LINDEN CLOSE ROAD.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
May 10, 3:57 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.8 hours before the alert went out and 75 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: 28 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1031 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

096 
WFUS52 KRAH 102045
TORRAH
NCC001-037-135-102115-
/O.NEW.KRAH.TO.W.0017.210510T2045Z-210510T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Raleigh NC
445 PM EDT Mon May 10 2021

The National Weather Service in Raleigh has issued a

* Tornado Warning for...
  Southeastern Alamance County in central North Carolina...
  Southwestern Orange County in central North Carolina...
  Northeastern Chatham County in central North Carolina...

* Until 515 PM EDT.
    
* At 445 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles south of Graham, moving southeast at 35 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Carrboro around 505 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Fearrington, Sutphin, Cane Creek Reservoir, Bynum and Saxapahaw.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3587 7901 3586 7902 3587 7899 3586 7898
      3569 7913 3588 7942 3599 7932
TIME...MOT...LOC 2045Z 294DEG 30KT 3592 7932 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$
GIH

2 follow-up statements

480 
WWUS52 KRAH 102100
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
500 PM EDT Mon May 10 2021

NCC001-102109-
/O.CAN.KRAH.TO.W.0017.000000T0000Z-210510T2115Z/
Alamance NC-
500 PM EDT Mon May 10 2021

...THE TORNADO WARNING FOR SOUTHEASTERN ALAMANCE COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled..

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central North Carolina.

LAT...LON 3584 7900 3569 7913 3584 7927 3585 7924
      3586 7925 3587 7925 3591 7921
TIME...MOT...LOC 2059Z 299DEG 25KT 3586 7921 

$$

NCC037-135-102115-
/O.CON.KRAH.TO.W.0017.000000T0000Z-210510T2115Z/
Orange NC-Chatham NC-
500 PM EDT Mon May 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR SOUTH
CENTRAL ORANGE AND NORTHEASTERN CHATHAM COUNTIES...
    
At 459 PM EDT, a severe thunderstorm capable of producing a tornado
was located 8 miles southwest of Carrboro, or 10 miles north of
Pittsboro, moving southeast at 30 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
south central Orange and northeastern Chatham Counties, including the
following locations... Bynum, Fearrington and Jordan Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3584 7900 3569 7913 3584 7927 3585 7924
      3586 7925 3587 7925 3591 7921
TIME...MOT...LOC 2059Z 299DEG 25KT 3586 7921 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

GIH

039 
WWUS52 KRAH 102111
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
511 PM EDT Mon May 10 2021

NCC037-135-102120-
/O.EXP.KRAH.TO.W.0017.000000T0000Z-210510T2115Z/
Orange NC-Chatham NC-
511 PM EDT Mon May 10 2021

...THE TORNADO WARNING FOR SOUTH CENTRAL ORANGE AND NORTHEASTERN
CHATHAM COUNTIES WILL EXPIRE AT 515 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire. However, hail and 
gusty winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for 
central North Carolina, and a Severe Thunderstorm Warning remains in 
effect for this area.

LAT...LON 3584 7900 3569 7913 3584 7927 3585 7924
      3586 7925 3587 7925 3591 7921
TIME...MOT...LOC 2110Z 294DEG 30KT 3582 7911 

$$

GIH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 2:21 PM EDT	Special Weather Statement	RAH	Forsyth	54 min
May 10, 2:57 PM EDT	Special Weather Statement	RAH	Forsyth, Guilford	48 min
May 10, 3:19 PM EDT	Severe Thunderstorm Warning	RAH	Forsyth, Guilford	41 min
May 10, 3:26 PM EDT	Special Weather Statement	RAH	Davidson	49 min
May 10, 3:47 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Chatham, Guilford, Randolph	43 min
May 10, 4:02 PM EDT	Severe Thunderstorm Warning	RAH	Davidson, Forsyth, Guilford, Randolph	43 min
May 10, 4:11 PM EDT	Special Weather Statement	RAH	Durham, Orange	49 min
May 10, 4:32 PM EDT	Special Weather Statement	RAH	Alamance, Chatham	43 min
May 10, 4:37 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Chatham, Durham, Lee, Orange	38 min
May 10, 5:00 PM EDT	Special Weather Statement	RAH	Durham	60 min
May 10, 5:14 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Durham, Harnett, Orange, Wake	46 min
May 10, 5:26 PM EDT	Special Weather Statement	RAH	Randolph	34 min
May 10, 5:47 PM EDT	Special Weather Statement	RAH	Chatham, Lee	43 min
May 10, 5:57 PM EDT	Special Weather Statement	RAH	Johnston, Wake	48 min
May 10, 5:57 PM EDT	Special Weather Statement	RAH	Franklin, Nash	63 min
May 10, 6:14 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Nash, Wake	46 min
May 10, 6:36 PM EDT	Special Weather Statement	RAH	Harnett	39 min
May 10, 7:21 PM EDT	Special Weather Statement	RAH	Davidson, Randolph	54 min
May 10, 7:41 PM EDT	Special Weather Statement	RAH	Montgomery	64 min

Nearby

Tornado Warnings in North Carolina, 2021 Every tornado warning in 2021 Tornadoes 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.