Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 110, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Aug 14, 2021, 2:15 PM EDT for 4 counties in North Carolina. It was in force for 45 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
- Aug 14, 2021, 2:15 PM EDT (18:15 UTC)
- Expired
- Aug 14, 2021, 3:00 PM EDT
- In force
- 45 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Franklin County, NC, Johnston County, NC, Nash County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 16 km from the middle of the area, began a volume at 18:18 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, 2:35 PM EDT | TSTM WND DMG | 4 Sw Pilot, NC | A TREE WAS REPORTED DOWN AT HIGHWAY 64 WEST NEAR ZEBULON. TIME ESTIMATED BY RADAR. |
| Aug 14, 2:43 PM EDT | HAIL 0.7 | 3 N New Hope, NC | TRAINED SPOTTER REPORTS DIME SIZED HAIL NEAR SPRING FOREST ROAD AND FOX ROAD IN RALEIGH. |
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, 6.3 hours before the alert went out and 135 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.
713
WUUS52 KRAH 141815
SVRRAH
NCC069-101-127-183-141900-
/O.NEW.KRAH.SV.W.0110.210814T1815Z-210814T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
215 PM EDT Sat Aug 14 2021
The National Weather Service in Raleigh has issued a
* Severe Thunderstorm Warning for...
Southwestern Nash County in central North Carolina...
Eastern Wake County in central North Carolina...
North central Johnston County in central North Carolina...
Southwestern Franklin County in central North Carolina...
* Until 300 PM EDT.
* At 215 PM EDT, a severe thunderstorm was located 8 miles west of
Zebulon, or 10 miles east of Raleigh, moving east at 5 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, Wake Forest, Garner, Clayton, Zebulon, Bunn, Knightdale,
Wendell, Rolesville and Middlesex.
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.
&&
LAT...LON 3564 7860 3578 7869 3590 7865 3597 7847
3601 7824 3589 7815 3576 7820 3567 7838
TIME...MOT...LOC 1815Z 276DEG 6KT 3581 7847
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Kren2 follow-up statements
447
WWUS52 KRAH 141832
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
232 PM EDT Sat Aug 14 2021
NCC069-101-127-183-141900-
/O.CON.KRAH.SV.W.0110.000000T0000Z-210814T1900Z/
Nash NC-Wake NC-Johnston NC-Franklin NC-
232 PM EDT Sat Aug 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR SOUTHWESTERN NASH...EASTERN WAKE...NORTH CENTRAL JOHNSTON AND
SOUTHWESTERN FRANKLIN COUNTIES...
At 232 PM EDT, a severe thunderstorm was located 7 miles west of
Zebulon, or 11 miles east of Raleigh, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Raleigh, Wake Forest, Garner, Clayton, Zebulon, Bunn, Knightdale,
Wendell, Rolesville and Middlesex.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3564 7860 3578 7869 3590 7865 3597 7847
3601 7824 3589 7815 3576 7820 3567 7838
TIME...MOT...LOC 1832Z 008DEG 1KT 3581 7844
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Kren498
WWUS52 KRAH 141856
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
256 PM EDT Sat Aug 14 2021
NCC069-101-127-183-141906-
/O.EXP.KRAH.SV.W.0110.000000T0000Z-210814T1900Z/
Nash NC-Wake NC-Johnston NC-Franklin NC-
256 PM EDT Sat Aug 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NASH...EASTERN
WAKE...NORTH CENTRAL JOHNSTON AND SOUTHWESTERN FRANKLIN COUNTIES WILL
EXPIRE AT 300 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
central and western Wake County, including the city of Raleigh.
LAT...LON 3564 7860 3578 7869 3590 7865 3597 7847
3601 7824 3589 7815 3576 7820 3567 7838
TIME...MOT...LOC 1856Z 276DEG 6KT 3581 7839
$$
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, 2:33 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, 3:01 PM EDT | Severe Thunderstorm Warning | RAH | Durham, Granville, Wake | 44 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.