Alert archive / North Carolina / Flash Flood Warnings in 2012
Flash Flood Warning 23, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 19, 2012, 9:25 PM EDT for Mecklenburg County, North Carolina. It was in force for 2 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
- Aug 19, 2012, 9:25 PM EDT (01:25 UTC)
- Expired
- Aug 19, 2012, 11:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Flood severity
- None
County Mecklenburg County, NC
The radar
The Greer radar (KGSP), 133 km from the middle of the area, began a volume at 01:26 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, 1.4 hours before the alert went out and 126 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
- 18 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 587 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
987
WGUS52 KGSP 200125
FFWGSP
NCC119-200330-
/O.NEW.KGSP.FF.W.0023.120820T0125Z-120820T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
925 PM EDT SUN AUG 19 2012
THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL MECKLENBURG COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
* UNTIL 1130 PM EDT
* AT 924 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF VERY HEAVY RAINFALL ACROSS THE WARNED AREA. THE AUTOMATED
RAIN GAGE AT HIDDEN VALLEY ES HAD REPORTED 3 INCHES OF RAIN IN
TWO HOURS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR IN THE LITTLE SUGAR CREEK BASIN.
IN THE DERITA CREEK PARK AREA...DERITA BRANCH WILL FLOOD NORTH
TRYON STREET AT ATANDO AVENUE ALONG WITH GRAHAM...CRAIGHEAD AND
WEST SUGAR CREEK ROADS.
OTHER LOW LYING AREAS NEAR LITTLE SUGAR CREEK...SUCH AS ALONG
CINDERELLA AND HIDDEN VALLEY ROADS...WELLINGFORD
STREET...KENTBROOK DRIVE...AND BURROUGHS STREET MAY FLOOD...AS
WELL AS AREAS ALONG CULLMAN AVENUE AND EAST 36TH STREET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 3529 8079 3523 8080 3515 8085 3519 8087
3525 8084
$$
CSH2 follow-up statements
215
WGUS72 KGSP 200152
FFSGSP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
952 PM EDT SUN AUG 19 2012
NCC119-200330-
/O.CON.KGSP.FF.W.0023.000000T0000Z-120820T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MECKLENBURG NC-
952 PM EDT SUN AUG 19 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CENTRAL MECKLENBURG
COUNTY UNTIL 1130 PM EDT...
AT 948 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
FLASH FLOODING WAS OCCURRING ACROSS THE UPPER LITTLE SUGAR CREEK
BASIN AFTER 3.3 INCHES OF RAIN FELL OVER THE PAST 2 HOURS. THIS
AMOUNT OF RAIN TYPICALLY RESULTS IN FLOODING ALONG LITTLE SUGAR
CREEK INCLUDING THE 100 TO 200 BLOCK OF LITTLE SUGAR CREEK ROAD.
THE STREAM GAGE AT 36TH STREET WAS AT 9.9 FEET...NEAR THE LEVEL
WHERE HOMES AND BUSINESSES BEGIN TO GET FLOODWATER AROUND THEM.
OTHER FLOOD PRONE AREAS IN THE WARNED AREA INCLUDE BUT ARE NOT
LIMITED TO...IN THE DERITA CREEK PARK AREA...NORTH TRYON STREET AT
ATANDO AVENUE ALONG WITH GRAHAM...CRAIGHEAD AND WEST SUGAR CREEK
ROADS.
LOW LYING AREAS...SUCH AS ALONG CINDERELLA AND HIDDEN VALLEY
ROADS...WELLINGFORD STREET...KENTBROOK DRIVE...AND BURROUGHS STREET
MAY FLOOD...AS WELL AS AREAS ALONG CULLMAN AVENUE AND EAST 36TH
STREET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3529 8079 3523 8080 3515 8085 3519 8087
3525 8084
$$
CSH650
WGUS72 KGSP 200253
FFSGSP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1053 PM EDT SUN AUG 19 2012
NCC119-200330-
/O.CON.KGSP.FF.W.0023.000000T0000Z-120820T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MECKLENBURG NC-
1053 PM EDT SUN AUG 19 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CENTRAL MECKLENBURG
COUNTY UNTIL 1130 PM EDT...
AT 1049 PM EDT...AUTOMATED GAGES INDICATED THAT STREAM LEVELS IN THE
HEADWATERS OF LITTLE SUGAR CREEK HAD CRESTED...BUT HIGH WATER
CONDITIONS WILL LIKELY LINGER BASINWIDE INTO THE OVERNIGHT HOURS.
LOCALIZED AREAS OF ABOVE BANKFULL CONDITIONS WILL SLOWLY CONTINUE TO
RECEDE AND THE WARNING WILL BE ALLOWED TO EXPIRE ON SCHEDULE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3529 8079 3523 8080 3515 8085 3519 8087
3525 8084
$$The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 8:22 PM EDT | Areal Flood Advisory | GSP | Mecklenburg | 98 min |
Nearby
Flash Flood Warnings in North Carolina, 2012Every flash flood warning in 2012
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.