Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 55, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at May 10, 2021, 4:37 PM EDT for 5 counties in North Carolina. It was in force for 38 min. 12 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, 4:37 PM EDT (20:37 UTC)
- Expired
- May 10, 2021, 5:15 PM EDT
- In force
- 38 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Alamance County, NC, Chatham County, NC, Durham County, NC, Lee County, NC, Orange County, NC
The radar
The Raleigh/Durham radar (KRAX), 63 km from the middle of the area, began a volume at 20:40 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, 4:40 PM EDT | TSTM WND DMG | 3 Sw Swepsonville, NC | A TREE WAS REPORTED DOWN ON A HOUSE NEAR MOUNT HERMAN ROCK CREEK ROAD AND HERBERT DRIVE. |
| May 10, 4:40 PM EDT | TSTM WND DMG | 5 Sw Swepsonville, NC | POWER POLES AND TREES BRANCHES WERE REPORTED DOWN ALONG KEYSTONE ROAD BETWEEN MOUNT HERMON ROCK CREEK ROAD AND BASS MOUNTAIN ROAD. |
| May 10, 4:42 PM EDT | TSTM WND DMG | 2 N Sutphin, NC | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 N SUTPHIN. MULTIPLE REPORTS OF TREES DOWN, SOME ON HOMES, AND DAMAGE TO STRUCTURES IN THE VICINITY OF EAST GREENSBORO CHAPEL HILL ROAD AND LINDLEY MILL ROAD, EASTWARD TO STOCKARD ROAD. |
| May 10, 4:42 PM EDT | TSTM WND DMG | 2 N Sutphin, NC | MULTIPLE REPORTS OF TREES DOWN, SOME ON HOMES, AND DAMAGE TO STRUCTURES IN THE VICINITY OF EAST GREENSBORO CHAPEL HILLS ROAD AND LINDLEY MILL ROAD, EASTWARD TO STOCKARD ROAD. |
| 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, 8.6 hours before the alert went out and 72 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.
- 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
The text
As transmitted.
445
WUUS52 KRAH 102037
SVRRAH
NCC001-037-063-105-135-102115-
/O.NEW.KRAH.SV.W.0055.210510T2037Z-210510T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
437 PM EDT Mon May 10 2021
The National Weather Service in Raleigh has issued a
* Severe Thunderstorm Warning for...
Southern Alamance County in central North Carolina...
Southwestern Orange County in central North Carolina...
North central Lee County in central North Carolina...
Northeastern Chatham County in central North Carolina...
Southwestern Durham County in central North Carolina...
* Until 515 PM EDT.
* At 437 PM EDT, a severe thunderstorm was located 11 miles south of
Graham, moving southeast at 30 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...
Durham, Chapel Hill, Graham, Pittsboro, Carrboro, Swepsonville,
Crosswinds Boating Center, Snow Camp, Crosswinds Campground and
Sutphin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3587 7888 3587 7891 3582 7892 3553 7914
3588 7954 3591 7954 3606 7941
TIME...MOT...LOC 2037Z 300DEG 28KT 3590 7939
HAIL...1.00IN
WIND...60MPH
$$
GIH2 follow-up statements
502
WWUS52 KRAH 102102
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
502 PM EDT Mon May 10 2021
NCC001-063-105-102111-
/O.CAN.KRAH.SV.W.0055.000000T0000Z-210510T2115Z/
Alamance NC-Lee NC-Durham NC-
502 PM EDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ALAMANCE...NORTH
CENTRAL LEE AND SOUTHWESTERN DURHAM COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central North Carolina.
LAT...LON 3591 7901 3586 7902 3587 7891 3582 7892
3562 7907 3574 7923 3581 7929 3584 7926
3585 7924 3586 7925 3595 7916
TIME...MOT...LOC 2101Z 300DEG 28KT 3580 7918
$$
NCC037-135-102115-
/O.CON.KRAH.SV.W.0055.000000T0000Z-210510T2115Z/
Orange NC-Chatham NC-
502 PM EDT Mon May 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR SOUTH CENTRAL ORANGE AND NORTHEASTERN CHATHAM COUNTIES...
At 501 PM EDT, a severe thunderstorm was located near Pittsboro,
moving southeast at 30 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...
Chapel Hill, Pittsboro, Carrboro, Jordan Lake, Jordan Lake State Rec
Area, Crosswinds Boating Center, Bynum, Seaforth Boat Dock,
Crosswinds Campground and Fearrington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3591 7901 3586 7902 3587 7891 3582 7892
3562 7907 3574 7923 3581 7929 3584 7926
3585 7924 3586 7925 3595 7916
TIME...MOT...LOC 2101Z 300DEG 28KT 3580 7918
HAIL...1.00IN
WIND...60MPH
$$
GIH862
WWUS52 KRAH 102116
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
516 PM EDT Mon May 10 2021
NCC037-135-102125-
/O.EXP.KRAH.SV.W.0055.000000T0000Z-210510T2115Z/
Orange NC-Chatham NC-
516 PM EDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ORANGE AND
NORTHEASTERN CHATHAM COUNTIES HAS EXPIRED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire. However, another
Severe Thunderstorm Warning has been issued for this storm in areas
to the southeast.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central North Carolina.
LAT...LON 3591 7901 3586 7902 3587 7891 3582 7892
3562 7907 3574 7923 3581 7929 3584 7926
3585 7924 3586 7925 3595 7916
TIME...MOT...LOC 2115Z 300DEG 28KT 3575 7908
$$
GIHThe 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, 4:45 PM EDT | Tornado Warning | RAH | Alamance, Chatham, Orange | 30 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
Severe Thunderstorm Warnings in North Carolina, 2021Every 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.