Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 56, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at May 10, 2021, 5:14 PM EDT for 5 counties in North Carolina. It was in force for 46 min. 2 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, 5:14 PM EDT (21:14 UTC)
- Expired
- May 10, 2021, 6:00 PM EDT
- In force
- 46 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Chatham County, NC, Durham County, NC, Harnett County, NC, Orange County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 45 km from the middle of the area, began a volume at 21:13 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, 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, 9.2 hours before the alert went out and 91 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.
865
WUUS52 KRAH 102114
SVRRAH
NCC037-063-085-135-183-102200-
/O.NEW.KRAH.SV.W.0056.210510T2114Z-210510T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
514 PM EDT Mon May 10 2021
The National Weather Service in Raleigh has issued a
* Severe Thunderstorm Warning for...
South central Orange County in central North Carolina...
North central Harnett County in central North Carolina...
Southwestern Wake County in central North Carolina...
Northeastern Chatham County in central North Carolina...
Southwestern Durham County in central North Carolina...
* Until 600 PM EDT.
* At 514 PM EDT, a severe thunderstorm was located 7 miles south of
Carrboro, or 8 miles northeast of Pittsboro, moving southeast at 35
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...
Raleigh, Durham, Cary, Chapel Hill, Garner, Carrboro,
Fuquay-Varina, Apex, Holly Springs and Morrisville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3579 7919 3593 7905 3578 7859 3549 7885
TIME...MOT...LOC 2114Z 304DEG 29KT 3581 7908
HAIL...1.00IN
WIND...60MPH
$$
GIH2 follow-up statements
170
WWUS52 KRAH 102142
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
542 PM EDT Mon May 10 2021
NCC037-063-085-135-102151-
/O.CAN.KRAH.SV.W.0056.000000T0000Z-210510T2200Z/
Orange NC-Harnett NC-Chatham NC-Durham NC-
542 PM EDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ORANGE...NORTH
CENTRAL HARNETT...NORTHEASTERN CHATHAM AND SOUTHWESTERN DURHAM
COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central North Carolina.
LAT...LON 3578 7859 3557 7879 3567 7897 3577 7894
3587 7888
TIME...MOT...LOC 2141Z 301DEG 24KT 3573 7891
$$
NCC183-102200-
/O.CON.KRAH.SV.W.0056.000000T0000Z-210510T2200Z/
Wake NC-
542 PM EDT Mon May 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHWESTERN WAKE COUNTY...
At 541 PM EDT, a severe thunderstorm was located near Cary, moving
southeast at 25 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...
Raleigh, Cary, Garner, Fuquay-Varina, Apex, Holly Springs,
Morrisville, New Hill, Lake Wheeler and Carpenter.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3578 7859 3557 7879 3567 7897 3577 7894
3587 7888
TIME...MOT...LOC 2141Z 301DEG 24KT 3573 7891
HAIL...1.00IN
WIND...60MPH
$$
GIH993
WWUS52 KRAH 102155
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
555 PM EDT Mon May 10 2021
NCC183-102204-
/O.EXP.KRAH.SV.W.0056.000000T0000Z-210510T2200Z/
Wake NC-
555 PM EDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WAKE COUNTY WILL
EXPIRE AT 600 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, small
hail and gusty winds are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central North Carolina.
LAT...LON 3578 7859 3557 7879 3567 7897 3577 7894
3587 7888
TIME...MOT...LOC 2154Z 304DEG 29KT 3568 7882
$$
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, 4:37 PM EDT | Severe Thunderstorm Warning | RAH | Alamance, Chatham, Durham, Lee, Orange | 38 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, 5:26 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.