Alert archive / North Carolina / Flash Flood Warnings in 2011
Flash Flood Warning 21, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood warning at Sep 23, 2011, 4:33 AM EDT for Henderson County, North Carolina. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 23, 2011, 4:33 AM EDT (08:33 UTC)
- Expired
- Sep 23, 2011, 8:17 AM EDT
- In force
- 4 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Flood severity
- None
County Henderson County, NC
The radar
The Greer radar (KGSP), 44 km from the middle of the area, began a volume at 08:36 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.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.6 hours before the alert went out and 244 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
- 401 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
534
WGUS52 KGSP 230833
FFWGSP
NCC089-231430-
/O.NEW.KGSP.FF.W.0021.110923T0833Z-110923T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
433 AM EDT FRI SEP 23 2011
THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN HENDERSON COUNTY IN WESTERN NORTH CAROLINA...
* UNTIL 1030 AM EDT
* AT 421 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF MODERATE RAINFALL ACROSS SOUTHERN HENDERSON COUNTY. RADAR
RAINFALL ESTIMATES INDICATES THAT BETWEEN 1.5 TO 2 INCHES OF RAIN
HAS FALLEN BETWEEN HENDERSONVILLE AND THE SOUTH CAROLINA STATE
LINE SINCE MIDNIGHT. ANOTHER AREA OF MODERATE TO HEAVY RAINFALL
WILL LIFT OUT OF THE UPSTATE OF SOUTH CAROLINA ACROSS HENDERSON
COUNTY DURING THE PRE DAWN HOURS THIS MORNING. RAINFALL RATES MAY
INCREASE TO 1 TO 2 INCHES AN HOUR AROUND SUNRISE.
* RUNOFF FROM THE RAINFALL THIS MORNING WILL CAUSE FLASH FLOODING TO
OCCUR. AT 420 AM...MUD CREEK IN SOUTHERN HENDERSONVILLE WAS 5.6 FEET
AND RISING QUICKLY. AT 7.5 FEET...FLOODING WILL OCCUR ALONG MUD
CREEK NEAR THE JUNCTION OF US HIGHWAY 25 AND 176...7TH AVENUE...AND
KING STREET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
TO REPORT HIGH WATER...FLOODING...MUDSLIDES...LANDSLIDES OR OTHER
SEVERE WEATHER THROUGH OUR AUTOMATED REPORTING SYSTEM...CALL OUR TOLL
FREE NUMBER... 1 8 7 7...6 3 3...6 7 7 2.
&&
LAT...LON 3540 8226 3528 8235 3525 8235 3524 8236
3523 8235 3519 8235 3518 8238 3521 8239
3517 8243 3518 8246 3515 8258 3536 8264
$$
NED2 follow-up statements
698
WGUS72 KGSP 231027
FFSGSP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
627 AM EDT FRI SEP 23 2011
NCC089-231430-
/O.CON.KGSP.FF.W.0021.000000T0000Z-110923T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HENDERSON NC-
627 AM EDT FRI SEP 23 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN HENDERSON
COUNTY UNTIL 1030 AM EDT...
AT 625 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF MODERATE TO HEAVY RAINFALL ACROSS SOUTHERN HENDERSON COUNTY.
SINCE MIDNIGHT...AUTOMATED RAIN GAUGES MEASURED NEAR THREE INCHES AT
PINNACLE MOUNTAIN TO AROUND ONE AND A HALF INCHES ACROSS THE
HENDERSONVILLE AREA. RAINFALL RATES ARE EXPECTED TO RANGE FROM THREE
QUARTERS OF AN INCH TO AN INCH PER HOUR THROUGH 8 AM.
MODERATE TO HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLOODING ALONG SMALL
CREEKS AND STREAMS. SOME LOCATIONS THAT WILL EXPERIENCE FLASH
FLOODING INCLUDE...HENDERSONVILLE...EDNEYVILLE...ETOWAH...FLAT ROCK
AND MOUNTAIN HOME.
AT 605 AM...MUD CREEK IN SOUTHERN HENDERSONVILLE WAS 5.6 FEET AND
RISING...BANKFULL OCCURS AT 6 FEET. AT 7.5 FEET...FLOODING WILL
OCCUR ALONG MUD CREEK NEAR THE JUNCTION OF US HIGHWAY 25 AND
176...7TH AVENUE...AND KING STREET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
TO REPORT HIGH WATER...FLOODING...MUDSLIDES...LANDSLIDES OR OTHER
SEVERE WEATHER THROUGH OUR AUTOMATED REPORTING SYSTEM...CALL OUR TOLL
FREE NUMBER... 1 8 7 7...6 3 3...6 7 7 2.
&&
LAT...LON 3540 8226 3528 8235 3525 8235 3524 8236
3523 8235 3519 8235 3518 8238 3521 8239
3517 8243 3518 8246 3515 8258 3536 8264
$$
NED048
WGUS72 KGSP 231217
FFSGSP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
817 AM EDT FRI SEP 23 2011
NCC089-231228-
/O.CAN.KGSP.FF.W.0021.000000T0000Z-110923T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HENDERSON NC-
817 AM EDT FRI SEP 23 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN HENDERSON
COUNTY IS CANCELLED...
THE HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN
THE WARNED AREA HAVE BEGUN TO RECEDE...ENDING THE FLOOD THREAT. IF
FLOODING WAS OBSERVED EARLIER...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE.
LAT...LON 3540 8226 3528 8235 3525 8235 3524 8236
3523 8235 3519 8235 3518 8238 3521 8239
3517 8243 3518 8246 3515 8258 3536 8264
$$
LGThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 1:20 AM EDT | Areal Flood Advisory | GSP | Transylvania | 100 min |
| Sep 23, 9:06 AM EDT | Special Weather Statement | GSP | Cabarrus, Iredell, Mecklenburg, Rowan | 84 min |
| Sep 23, 9:17 AM EDT | Areal Flood Advisory | GSP | Cabarrus, Mecklenburg | 3 hr |
| Sep 23, 9:33 AM EDT | Flash Flood Warning | GSP | Cabarrus, Iredell, Mecklenburg, Rowan, Union | 3 hr |
Nearby
Flash Flood Warnings in North Carolina, 2011Every flash flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.