Alert archive / North Carolina / Flash Flood Warnings in 2012

Flash Flood Warning 30, NWS Greenville-Spartanburg, SC

September 5, 20124 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Sep 5, 2012, 10:02 PM EDT for 4 counties in North Carolina. It was in force for 3 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
Sep 5, 2012, 10:02 PM EDT (02:02 UTC)
Expired
Sep 6, 2012, 1:17 AM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Flood severity
None

Counties Avery County, NC, Burke County, NC, McDowell County, NC, Mitchell County, NC

The radar

The Greer radar (KGSP), 121 km from the middle of the area, began a volume at 02:04 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

TimeReportWhereRemark
Sep 5, 10:15 PM EDTFLASH FLOOD5 Ne Spruce Pine, NCROAD CLOSURES AND EVACUATIONS AROUND THE INGALLS AREA...ALONG 3 MILE HIGHWAY AND US 19E...INCLUDING MULLEN HILL RD...GREEN PARK LANE AND HOWELLS STORE AREAS. REPORTED BY COUNTY COMMS AND SOCIAL MEDIA OUTLETS.

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 00:00Z, 2.0 hours before the alert went out and 182 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.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2012-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1105 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2012-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1105 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
896 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

934 
WGUS52 KGSP 060202
FFWGSP
NCC011-023-111-121-060800-
/O.NEW.KGSP.FF.W.0030.120906T0202Z-120906T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1002 PM EDT WED SEP 5 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL MCDOWELL COUNTY IN WESTERN NORTH CAROLINA...
  NORTHWESTERN BURKE COUNTY IN WESTERN NORTH CAROLINA...
  SOUTHEASTERN MITCHELL COUNTY IN WESTERN NORTH CAROLINA...
  SOUTHERN AVERY COUNTY IN WESTERN NORTH CAROLINA...

* UNTIL 400 AM EDT THURSDAY

* AT 959 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. OVER TWO AND ONE HALF INCHES OF RAINFALL WAS          
  ESTIMATED IN SOUTHERN AVERY COUNTY.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...     
  INGALLS...ALTAMONT...LINVILLE FALLS...GREEN VALLEY...AND JONAS     
  RIDGE.

REPORTS OF FLOODING HAVE BEEN RECEIVED FROM INGALLS...ALTAMONT... 
LINVILLE FALLS...AND GREEN VALLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

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 3601 8181 3584 8180 3585 8207 3601 8208

$$
07
3 follow-up statements
128 
WGUS72 KGSP 060302
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1102 PM EDT WED SEP 5 2012

NCC111-060312-
/O.CAN.KGSP.FF.W.0030.000000T0000Z-120906T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCDOWELL NC-
1102 PM EDT WED SEP 5 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTH CENTRAL
MCDOWELL COUNTY IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3596 8181 3589 8181 3591 8192 3596 8194
      3595 8196 3592 8195 3591 8198 3589 8198
      3588 8203 3587 8203 3585 8207 3599 8208
      3600 8190

$$

NCC011-023-121-060800-
/O.CON.KGSP.FF.W.0030.000000T0000Z-120906T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
AVERY NC-MITCHELL NC-BURKE NC-
1102 PM EDT WED SEP 5 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN BURKE...
SOUTHEASTERN MITCHELL AND SOUTHWESTERN AVERY COUNTIES UNTIL 400 AM
EDT...

AT 1057 PM EDT...IT WAS REPORTED THAT FLASH FLOODING WAS LINGERING 
ACROSS PORTIONS OF THE NORTH TOE BASIN...MAINLY AROUND AND JUST 
SOUTH OF THE INGALLS AREA...WHERE RADAR ESTIMATED LOCALLY UP TO 3.5 
INCHES OF RAIN HAD FALLEN. LINGERING HIGH WATER CONDITIONS ALONG AND 
NEAR 3 MILE HIGHWAY...US 19 E AND ADJACENT ROADS WILL SLOWLY RECEDE 
OVER THE NEXT FEW HOURS.

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 3596 8181 3589 8181 3591 8192 3596 8194
      3595 8196 3592 8195 3591 8198 3589 8198
      3588 8203 3587 8203 3585 8207 3599 8208
      3600 8190

$$
315 
WGUS72 KGSP 060358
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1158 PM EDT WED SEP 5 2012

NCC023-060410-
/O.CAN.KGSP.FF.W.0030.000000T0000Z-120906T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURKE NC-
1158 PM EDT WED SEP 5 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN BURKE
COUNTY IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3600 8190 3596 8195 3596 8194 3595 8196
      3592 8195 3591 8198 3589 8198 3588 8203
      3587 8203 3585 8207 3599 8208

$$

NCC011-121-060800-
/O.CON.KGSP.FF.W.0030.000000T0000Z-120906T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
AVERY NC-MITCHELL NC-
1158 PM EDT WED SEP 5 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHEASTERN MITCHELL
AND SOUTHWESTERN AVERY COUNTIES UNTIL 400 AM EDT...

AT 1155 PM EDT...LINGERING HIGH WATER CONDITIONS EXISTED 
ACROSS A SMALL PORTION OF THE NORTH TOE BASIN...MAINLY AROUND AND 
JUST SOUTH OF THE INGALLS AREA...WHERE RADAR ESTIMATED LOCALLY UP TO 
3.5 INCHES OF RAIN HAD FALLEN EARLIER...ESPECIALLY ALONG AND NEAR 3 
MILE HIGHWAY...US 19 E AND ADJACENT ROADS. IT IS POSSIBLE THAT 
ANOTHER ROUND OF HEAVY RAIN WILL MOVE OVER THE WARNED AREA DURING 
THE LATE NIGHT HOURS...BUT IT IS INCONCLUSIVE AT THIS POINT WHETHER 
THE RAIN WILL BE HEAVY AND LINGER LONG ENOUGH TO CAUSE MORE FLOODING.

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 3600 8190 3596 8195 3596 8194 3595 8196
      3592 8195 3591 8198 3589 8198 3588 8203
      3587 8203 3585 8207 3599 8208

$$
672 
WGUS72 KGSP 060517
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
117 AM EDT THU SEP 6 2012

NCC011-121-060531-
/O.CAN.KGSP.FF.W.0030.000000T0000Z-120906T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
AVERY NC-MITCHELL NC-
117 AM EDT THU SEP 6 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHEASTERN
MITCHELL AND SOUTHWESTERN AVERY COUNTIES IS CANCELLED...

THE THREAT OF ADDITIONAL HEAVY RAIN HAS ENDED ACROSS THE WARNED AREA 
AND HIGH WATER CONDITIONS WILL REMAIN LIMITED TO JUST THE NORTH TOE 
RIVER ITSELF FOR THE NEXT FEW HOURS...BUT IS EXPECTED TO REMAIN 
WITHIN IT/S BANKS. BASED ON THIS...THE WARNING HAS BEEN CANCELLED.

LAT...LON 3600 8190 3596 8195 3596 8194 3595 8196
      3592 8195 3591 8198 3589 8198 3588 8203
      3587 8203 3585 8207 3599 8208

$$

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 5, 9:24 PM EDTAreal Flood AdvisoryGSPAvery2 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.