Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 112, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Aug 14, 2021, 3:01 PM EDT for Durham County, Granville County, Wake County, North Carolina. It was in force for 44 min. 7 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
- Aug 14, 2021, 3:01 PM EDT (19:01 UTC)
- Expired
- Aug 14, 2021, 3:45 PM EDT
- In force
- 44 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Durham County, NC, Granville County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 41 km from the middle of the area, began a volume at 19:04 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, 3:04 PM EDT | HAIL 0.88 | 2 Wsw Falls Lake, NC | PUBLIC REPORTS NICKEL SIZED HAIL IN NORTH RALEIGH NEAR FALLS LAKE. TIME ESTIMATED BY RADAR. |
| Aug 14, 3:08 PM EDT | TSTM WND DMG | 6 W Falls Lake, NC | A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF FALL LINE CT AND OLD CREEDMOOR RD. TIME ESTIMATED BY RADAR. |
| Aug 14, 3:09 PM EDT | TSTM WND DMG | 6 W Falls Lake, NC | A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF N FALLS DR AND CREEDMOOR RD. TIME ESTIMATED BY RADAR. |
| Aug 14, 3:10 PM EDT | TSTM WND DMG | 5 W Falls Lake, NC | A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF NORWOOD RD AND MT. VERNON CHURCH RD. TIME ESTIMATED BY RADAR. |
| Aug 14, 3:10 PM EDT | TSTM WND DMG | 7 Wnw Falls Lake, NC | A TREE WAS REPORTED DOWN ON MELVIN ARNOLD RD. TIME ESTIMATED BY RADAR. |
| Aug 14, 3:10 PM EDT | TSTM WND DMG | 7 Wnw Falls Lake, NC | LARGE TREE DOWN ON PEMBRIDGE LANE IN RALEIGH. TIME APPROXIMATED BY RADAR. |
| Aug 14, 3:48 PM EDT | HAIL 1 | 2 N Rdu International, NC | PUBLIC REPORTS UP TO QUARTER SIZED HAIL AT THE RALEIGH DURHAM INTERNATIONAL AIRPORT. 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, 7.0 hours before the alert went out and 117 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
- 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
The text
As transmitted.
172
WUUS52 KRAH 141901
SVRRAH
NCC063-077-183-141945-
/O.NEW.KRAH.SV.W.0112.210814T1901Z-210814T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
301 PM EDT Sat Aug 14 2021
The National Weather Service in Raleigh has issued a
* Severe Thunderstorm Warning for...
Southeastern Granville County in central North Carolina...
Northwestern Wake County in central North Carolina...
Southeastern Durham County in central North Carolina...
* Until 345 PM EDT.
* At 301 PM EDT, a severe thunderstorm was located 7 miles northeast
of RDU International, or 7 miles north of Raleigh, moving north at
10 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, Wake Forest, RDU International, Morrisville,
Falls Lake State Rec Area, Gorman, William B Umstead State Park and
Research Triangle.
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 3614 7852 3613 7852 3608 7854 3602 7855
3601 7851 3588 7850 3581 7882 3601 7893
TIME...MOT...LOC 1901Z 166DEG 8KT 3594 7867
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Kren3 follow-up statements
819
WWUS52 KRAH 141909
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
309 PM EDT Sat Aug 14 2021
NCC063-077-183-141945-
/O.CON.KRAH.SV.W.0112.000000T0000Z-210814T1945Z/
Granville NC-Wake NC-Durham NC-
309 PM EDT Sat Aug 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR SOUTHEASTERN GRANVILLE...NORTHWESTERN WAKE AND SOUTHEASTERN
DURHAM COUNTIES...
At 309 PM EDT, a severe thunderstorm was located 8 miles northeast of
RDU International, or 9 miles north of Raleigh, moving north at 10
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Raleigh, Durham, Cary, Wake Forest, RDU International, Morrisville,
Falls Lake State Rec Area, Gorman, William B Umstead State Park and
Research Triangle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3614 7852 3613 7852 3608 7854 3602 7855
3601 7851 3588 7850 3581 7882 3601 7893
TIME...MOT...LOC 1909Z 166DEG 8KT 3596 7868
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Kren701
WWUS52 KRAH 141922
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
322 PM EDT Sat Aug 14 2021
NCC063-077-183-141945-
/O.CON.KRAH.SV.W.0112.000000T0000Z-210814T1945Z/
Granville NC-Wake NC-Durham NC-
322 PM EDT Sat Aug 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR SOUTHEASTERN GRANVILLE...NORTHWESTERN WAKE AND SOUTHEASTERN
DURHAM COUNTIES...
At 322 PM EDT, a severe thunderstorm was located 9 miles south of
Creedmoor, moving north at 10 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, Wake Forest, RDU International, Morrisville,
Falls Lake State Rec Area, Gorman, William B Umstead State Park and
Research Triangle.
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 3614 7852 3613 7852 3608 7854 3602 7855
3601 7851 3588 7850 3581 7882 3601 7893
TIME...MOT...LOC 1922Z 166DEG 8KT 3599 7869
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Kren859
WWUS52 KRAH 141945
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
345 PM EDT Sat Aug 14 2021
NCC063-077-183-141952-
/O.EXP.KRAH.SV.W.0112.000000T0000Z-210814T1945Z/
Granville NC-Wake NC-Durham NC-
345 PM EDT Sat Aug 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GRANVILLE...
NORTHWESTERN WAKE AND SOUTHEASTERN DURHAM COUNTIES WILL EXPIRE AT 345
PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
Remember, a Severe Thunderstorm Warning still remains in effect for
western Wake County
LAT...LON 3614 7852 3613 7852 3608 7854 3602 7855
3601 7851 3588 7850 3581 7882 3601 7893
TIME...MOT...LOC 1942Z 166DEG 8KT 3603 7870
$$
KrenThe 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 | 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, 3:25 PM EDT | Flash Flood Warning | RAH | Chatham, Durham, Wake | 3 hr |
| Aug 14, 3:27 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Harnett, Wake | 37 min |
| 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 | RAH | Guilford | 2 hr |
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.