Alert archive / North Carolina / Flash Flood Warnings in 2021
Flash Flood Warning 34, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 17, 2021, 6:57 PM EDT for Burke County, McDowell County, North Carolina. It was in force for 6 hr. 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 17, 2021, 6:57 PM EDT (22:57 UTC)
- Expired
- Aug 18, 2021, 12:49 AM EDT
- In force
- 6 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burke County, NC, McDowell County, NC
The radar
The Greer radar (KGSP), 96 km from the middle of the area, began a volume at 23:00 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 17, 8:37 PM EDT | FLASH FLOOD | 3 Nne Thermal City, NC | FLASH FLOODING IN PROGRESS ALONG BAKERS CREEK |
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, 11.0 hours before the alert went out and 177 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
- 522 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 593 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted.
045
WGUS52 KGSP 172257
FFWGSP
NCC023-111-180200-
/O.NEW.KGSP.FF.W.0034.210817T2257Z-210818T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Greenville-Spartanburg SC
657 PM EDT Tue Aug 17 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Flash Flood Warning for...
Southern Burke County in western North Carolina...
Southeastern McDowell County in western North Carolina...
* Until 1000 PM EDT.
* At 657 PM EDT, Doppler radar indicated thunderstorms producing
excessive rain poised to overspread locales from around Greater
Marion to Morganton. This will result in developing urban flooding
throughout the highway 70 corridor and flooding of streams across
various tributaries of the Catawba river this evening.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Morganton, Marion, Longview, Valdese, Salem, Icard, Drexel,
Hildebran, Connelly Springs, Rutherford College, Glen Alpine,
Rhodhiss, South Mountains State Park, Lake James State Park, Lake
James, Lake Rhodhiss, Hickory Regional Airport, Oak Hill,
Dysartsville and Nebo.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3553 8213 3566 8203 3572 8195 3575 8196
3574 8189 3576 8177 3580 8168 3584 8165
3582 8162 3578 8163 3578 8145 3576 8138
3569 8144 3562 8163 3562 8175 3558 8182
3554 8185 3553 8198 3555 8200 3554 8203
FLASH FLOOD...RADAR INDICATED
$$2 follow-up statements
505
WGUS52 KGSP 180154
FFWGSP
NCC023-111-180500-
/O.EXT.KGSP.FF.W.0034.000000T0000Z-210818T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Greenville-Spartanburg SC
954 PM EDT Tue Aug 17 2021
The National Weather Service in Greenville-Spartanburg has extended
the
* Flash Flood Warning for...
Southern Burke County in western North Carolina...
Southeastern McDowell County in western North Carolina...
* Until 100 AM EDT.
* At 954 PM EDT, Heavy rainfall has ended across Burke and McDowell
counties. Between 2 and 4 inches of rain have fallen, but very
little additional rainfall is expected. However, it will take
several hours for excessive runoff to subside and for area streams
to crest and recede. Therefore, please do not let your guard down
and avoid all low-lying areas adjacent to streams. Do NOT cross
flooded roadways as those roadways may have been damaged by swift
currents. Avoid all low-water crossings as flood waters can rise
quickly and without warning.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that may continue to experience flooding include...
Morganton, Marion, Longview, Valdese, Salem, Icard, Drexel,
Hildebran, Connelly Springs, Rutherford College, Glen Alpine,
Rhodhiss, South Mountains State Park, Lake James State Park, Lake
James, Lake Rhodhiss, Hickory Regional Airport, Oak Hill,
Dysartsville and Nebo.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3553 8213 3566 8203 3572 8195 3575 8196
3574 8189 3576 8177 3580 8168 3584 8165
3582 8162 3578 8163 3578 8145 3576 8138
3569 8144 3562 8163 3562 8175 3558 8182
3554 8185 3553 8198 3555 8200 3554 8203
FLASH FLOOD...RADAR INDICATED
$$
JMP396
WGUS72 KGSP 180449
FFSGSP
Flash Flood Statement
National Weather Service Greenville-Spartanburg SC
1249 AM EDT Wed Aug 18 2021
NCC023-111-180459-
/O.CAN.KGSP.FF.W.0034.000000T0000Z-210818T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burke NC-McDowell NC-
1249 AM EDT Wed Aug 18 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHERN BURKE AND
SOUTHEASTERN MCDOWELL COUNTIES...
The heavy rain has ended across southern Burke and southeastern
McDowell Counties and small streams across the area have crested and
receded below critical levels. However, additional rises along the
Catawba River are likely overnight into Wednesday afternoon and new
areas of river and reservoir flooding may develop. Residents along
or downstream of Catawba River lakes should pay close attention to
lake levels through Wednesday.
LAT...LON 3553 8213 3566 8203 3572 8195 3575 8196
3574 8189 3576 8177 3580 8168 3584 8165
3582 8162 3578 8163 3578 8145 3576 8138
3569 8144 3562 8163 3562 8175 3558 8182
3554 8185 3553 8198 3555 8200 3554 8203
$$
JMPThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 2:22 AM EDT | River Flood Warning | GSP | Henderson, Transylvania | 4 days |
| Aug 17, 3:01 AM EDT | River Flood Advisory | GSP | Buncombe, Henderson | 79 min |
| Aug 17, 3:27 AM EDT | River Flood Advisory | GSP | Buncombe | 26 hr |
| Aug 17, 3:59 AM EDT | River Flood Warning | GSP | Madison | 40 hr |
| Aug 17, 4:12 AM EDT | River Flood Warning | GSP | Buncombe | 31 hr |
| Aug 17, 4:20 AM EDT | River Flood Warning | GSP | Buncombe, Henderson | 4 days |
| Aug 17, 11:36 AM EDT | Tornado Warning | GSP | Alexander, Iredell | 39 min |
| Aug 17, 12:05 PM EDT | Special Weather Statement | GSP | Iredell | 25 min |
| Aug 17, 12:06 PM EDT | Tornado Warning | GSP | Iredell | 39 min |
| Aug 17, 12:33 PM EDT | Tornado Warning | GSP | Alexander | 12 min |
| Aug 17, 12:42 PM EDT | Tornado Warning | GSP | Iredell | 18 min |
| Aug 17, 1:09 PM EDT | Flash Flood Warning | GSP | Jackson, Macon, Transylvania | 5 hr |
| Aug 17, 1:25 PM EDT | Flash Flood Warning | GSP | Transylvania | 4 hr |
| Aug 17, 1:56 PM EDT | Special Weather Statement | GSP | Transylvania | 34 min |
| Aug 17, 2:01 PM EDT | Special Weather Statement | GSP | Catawba, Lincoln | 29 min |
| Aug 17, 2:02 PM EDT | Special Weather Statement | GSP | Iredell | 28 min |
| Aug 17, 2:02 PM EDT | Special Weather Statement | GSP | Alexander | 28 min |
| Aug 17, 2:31 PM EDT | Tornado Warning | GSP | Burke, Caldwell | 44 min |
| Aug 17, 2:31 PM EDT | Tornado Warning | GSP | Macon | 19 min |
| Aug 17, 3:02 PM EDT | Tornado Warning | GSP | Caldwell | 43 min |
| Aug 17, 3:06 PM EDT | Tornado Warning | GSP | Alexander, Caldwell | 39 min |
| Aug 17, 3:12 PM EDT | Flash Flood Warning | GSP | Haywood | 3 hr |
| Aug 17, 3:41 PM EDT | Flash Flood Warning | GSP | Buncombe | 5 hr |
| Aug 17, 3:48 PM EDT | Tornado Warning | GSP | Alexander, Burke, Caldwell, Catawba | 42 min |
| Aug 17, 4:07 PM EDT | Tornado Warning | GSP | Avery, Burke, McDowell, Mitchell | 53 min |
| Aug 17, 4:08 PM EDT | Flash Flood Warning | GSP | Madison | 9 hr |
| Aug 17, 4:16 PM EDT | Flash Flood Warning | GSP | Buncombe, Henderson | 5 hr |
| Aug 17, 4:17 PM EDT | Tornado Warning | GSP | Avery, Burke, Caldwell | 43 min |
| Aug 17, 4:20 PM EDT | Tornado Warning | GSP | Henderson, Polk, Rutherford | 12 min |
| Aug 17, 4:24 PM EDT | Flash Flood Warning | GSP | Haywood | 4 hr |
| Aug 17, 4:35 PM EDT | Flash Flood Warning | GSP | Buncombe, Henderson, Polk, Rutherford | 8 hr |
| Aug 17, 4:50 PM EDT | Flash Flood Warning | GSP | McDowell | 9 hr |
| Aug 17, 4:58 PM EDT | Flash Flood Warning | GSP | Yancey | 4 hr |
| Aug 17, 4:59 PM EDT | Tornado Warning | GSP | Avery, Burke, McDowell, Mitchell, Yancey | 46 min |
| Aug 17, 5:14 PM EDT | Flash Flood Warning | GSP | Transylvania | 4 hr |
| Aug 17, 5:17 PM EDT | River Flood Warning | GSP | Haywood | 12 hr |
| Aug 17, 5:26 PM EDT | Tornado Warning | GSP | Avery, McDowell, Mitchell, Rutherford, Yancey | 49 min |
| Aug 17, 5:28 PM EDT | Tornado Warning | GSP | Avery, Burke, Caldwell | 47 min |
| Aug 17, 5:32 PM EDT | Flash Flood Warning | GSP | Mitchell | 4 hr |
| Aug 17, 5:48 PM EDT | River Flood Warning | GSP | Buncombe | 26 hr |
| Aug 17, 6:00 PM EDT | Flash Flood Warning | GSP | Avery, Burke, Caldwell | 9 hr |
| Aug 17, 6:16 PM EDT | Flash Flood Warning | GSP | Henderson, Polk, Rutherford | 3 hr |
| Aug 17, 6:42 PM EDT | Tornado Warning | GSP | Polk, Rutherford | 48 min |
| Aug 17, 7:59 PM EDT | Tornado Warning | GSP | Cleveland | 46 min |
Nearby
Flash Flood Warnings in North Carolina, 2021Every flash flood 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.