Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 99, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 11, 2021, 3:01 PM EDT for Burke County, Catawba County, North Carolina. It was in force for 44 min. 1 report 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 11, 2021, 3:01 PM EDT (19:01 UTC)
- Expired
- Aug 11, 2021, 3:45 PM EDT
- In force
- 44 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Burke County, NC, Catawba County, NC
The radar
The Greer radar (KGSP), 118 km from the middle of the area, began a volume at 19:06 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 11, 3:04 PM EDT | TSTM WND DMG | Morganton, NC | PUBLIC REPORTED TREES DOWN ON POWERLINES ON HILLSIDE LN CAUSING POWER OUTAGE. |
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 148 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
- 653 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1352 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
667
WUUS52 KGSP 111901
SVRGSP
NCC023-035-111945-
/O.NEW.KGSP.SV.W.0099.210811T1901Z-210811T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
301 PM EDT Wed Aug 11 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Severe Thunderstorm Warning for...
Western Catawba County in the Piedmont of North Carolina...
Southeastern Burke County in western North Carolina...
* Until 345 PM EDT.
* At 300 PM EDT, a severe thunderstorm was located near Morganton, or
near Drexel, moving east at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Morganton, Longview, Valdese, Icard, Drexel, Hildebran, Connelly
Springs, Rutherford College, Lake Rhodhiss and Hickory Regional
Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Please report damaging winds, hail, or flooding to the National
Weather Service by calling toll free, 1, 800, 2 6 7, 8 1 0 1, or by
posting on our Facebook page, or Tweet it using hashtag nwsgsp. Your
message should describe the event and the specific location where it
occurred.
&&
LAT...LON 3581 8159 3578 8155 3579 8145 3577 8144
3576 8138 3577 8137 3577 8136 3578 8135
3559 8136 3564 8172 3582 8171
TIME...MOT...LOC 1900Z 272DEG 10KT 3573 8163
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TDP1 follow-up statement
595
WWUS52 KGSP 111938
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
338 PM EDT Wed Aug 11 2021
NCC023-035-111948-
/O.EXP.KGSP.SV.W.0099.000000T0000Z-210811T1945Z/
Catawba NC-Burke NC-
338 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN CATAWBA AND
SOUTHEASTERN BURKE COUNTIES WILL EXPIRE AT 345 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy
rain and lightning are still possible with this thunderstorm.
LAT...LON 3581 8159 3578 8155 3579 8145 3577 8144
3576 8138 3577 8137 3577 8136 3578 8135
3559 8136 3564 8172 3582 8171
TIME...MOT...LOC 1938Z 272DEG 10KT 3573 8152
$$
TDPThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 12:28 PM EDT | Special Weather Statement | GSP | Henderson | 47 min |
| Aug 11, 1:47 PM EDT | Special Weather Statement | GSP | McDowell | 28 min |
| Aug 11, 2:51 PM EDT | Special Weather Statement | GSP | Burke | 24 min |
| Aug 11, 3:24 PM EDT | Special Weather Statement | GSP | Polk | 36 min |
| Aug 11, 3:51 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe | 39 min |
| Aug 11, 3:53 PM EDT | Severe Thunderstorm Warning | GSP | Iredell | 52 min |
| Aug 11, 4:01 PM EDT | Severe Thunderstorm Warning | GSP | Polk | 44 min |
| Aug 11, 4:03 PM EDT | Severe Thunderstorm Warning | GSP | Burke, Cleveland, Lincoln, Rutherford | 42 min |
| Aug 11, 4:24 PM EDT | Special Weather Statement | GSP | Rutherford | 36 min |
| Aug 11, 4:31 PM EDT | Special Weather Statement | GSP | Iredell | 29 min |
| Aug 11, 4:40 PM EDT | Severe Thunderstorm Warning | GSP | Catawba, Iredell | 50 min |
| Aug 11, 4:54 PM EDT | Special Weather Statement | GSP | Rutherford | 36 min |
| Aug 11, 5:02 PM EDT | Special Weather Statement | GSP | Iredell | 28 min |
| Aug 11, 5:08 PM EDT | Severe Thunderstorm Warning | GSP | Iredell, Rowan | 34 min |
| Aug 11, 5:17 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland | 43 min |
| Aug 11, 5:34 PM EDT | Severe Thunderstorm Warning | GSP | Union | 27 min |
| Aug 11, 5:46 PM EDT | Special Weather Statement | GSP | Mecklenburg | 29 min |
| Aug 11, 5:57 PM EDT | Special Weather Statement | GSP | Mecklenburg | 33 min |
| Aug 11, 6:08 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 10 min |
| Aug 11, 6:10 PM EDT | Special Weather Statement | GSP | Gaston | 35 min |
| Aug 11, 6:16 PM EDT | Special Weather Statement | GSP | Cabarrus | 29 min |
| Aug 11, 6:29 PM EDT | Severe Thunderstorm Warning | GSP | Cabarrus | 20 min |
| Aug 11, 6:47 PM EDT | Special Weather Statement | GSP | Cabarrus | 28 min |
| Aug 11, 6:59 PM EDT | Areal Flood Advisory | GSP | Cabarrus, Rowan | 2 hr |
| Aug 11, 7:28 PM EDT | Special Weather Statement | GSP | Mecklenburg | 32 min |
| Aug 11, 7:31 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 44 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.