Alert archive / North Carolina / Flash Flood Warnings in 2012

Flash Flood Warning 6, NWS Greenville-Spartanburg, SC

July 11, 2012Caldwell County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Jul 11, 2012, 5:49 PM EDT for Caldwell County, North Carolina. It was in force for 4 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: Jul 11, 2012, 5:49 PM EDT (21:49 UTC)
Expired: Jul 11, 2012, 10:12 PM EDT
In force: 4 hr
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Flood severity: None

County Caldwell County, NC

The radar

The Greer radar (KGSP), 129 km from the middle of the area, began a volume at 21:51 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
Jul 11, 6:15 PM EDT	FLASH FLOOD	3 N Collettsville, NC	COLLETTSVILLE FIRE AND RESCUE REPORTED THE FIRST CALL OF WATER BEING AT BANKFULL WAS AROUND 515 PM. WATER CONTINUED TO RISE AFTER THAT AND FRANKLIN CREEK MADE FRANKLIN CREEK ROAD IMPASSIBLE FOR A WHILE. THE JOHNS RIVER GOT HIGH ENOUGH TO CROSS THE BRIDGE ON OL

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, 9.8 hours before the alert went out and 157 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 44 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 774 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 41 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.

064 
WGUS52 KGSP 112149
FFWGSP
NCC027-120330-
/O.NEW.KGSP.FF.W.0006.120711T2149Z-120712T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
549 PM EDT WED JUL 11 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN CALDWELL COUNTY IN WESTERN NORTH CAROLINA...

* UNTIL 1130 PM EDT

* AT 541 PM EDT...EMERGENCY MANAGEMENT REPORTED AN AREA OF VERY HEAVY
  RAINFALL ACROSS THE WARNED AREA. CURRENT RADAR ESTIMATES OF UP TO 
2 INCHES OF RAIN PER HOUR ARE HAVE BEEN OCCURRING OVER THE WARNED 
AREA WITH ANOTHER 1 TO 2 INCHES EXPECTED OVER THE NEXT FEW HOURS.  

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...  
COLLETTSVILLE...GLOBE AND PATTERSON. JOHNS RIVER HAS BEEN REPORTED 
TO BE OUT OF ITS BANKS AND WATER IS FLOWING OVER OLD JOHNS RIVER 
ROAD. REPORTS OF FLOODING ALONG FRANKLIN CREEK HAVE ALSO BEEN 
RECEIVED.    

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL MAY CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

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 3599 8152 3584 8161 3587 8167 3594 8178
      3605 8173

$$

JPT

2 follow-up statements

476 
WGUS72 KGSP 120032
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
832 PM EDT WED JUL 11 2012

NCC027-120330-
/O.CON.KGSP.FF.W.0006.000000T0000Z-120712T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CALDWELL NC-
832 PM EDT WED JUL 11 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR WEST CENTRAL CALDWELL 
COUNTY UNTIL 1130 PM EDT...

AT 825 PM EDT...RAINFALL HAS TAPERED OFF OVER THE AREA...HOWEVER 
EMERGENCY MANAGEMENT REPORTED THAT FLASH FLOODING CONTINUES FOR 
PORTIONS OF SOUTHWESTERN CALDWELL COUNTY. 

SOME LOCATIONS THAT CONTINUE TO EXPERIENCE FLASH FLOODING 
INCLUDE...COLLETTSVILLE...GAMEWELL...GLOBE AND PATTERSON. JOHNS 
RIVER HAS BEEN REPORTED TO BE OUT OF ITS BANKS AND WATER IS FLOWING 
OVER OLD JOHNS RIVER ROAD WHICH HAS BEEN CLOSED OVER THE PAST FEW HOURS. 
REPORTS OF FLOODING ALONG FRANKLIN CREEK HAVE ALSO BEEN RECEIVED.

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.

IN HILLY TERRAIN...THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH
ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL
ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW
INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 3599 8152 3584 8161 3587 8167 3594 8178
      3605 8173

$$

JPT

086 
WGUS72 KGSP 120212
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1012 PM EDT WED JUL 11 2012

NCC027-120226-
/O.CAN.KGSP.FF.W.0006.000000T0000Z-120712T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CALDWELL NC-
1012 PM EDT WED JUL 11 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WEST CENTRAL
CALDWELL COUNTY IS CANCELLED...

THE MAJORITY OF 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 3599 8152 3584 8161 3587 8167 3594 8178
      3605 8173

$$

JPT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:14 PM EDT	Areal Flood Advisory	GSP	Mitchell	106 min
Jul 10, 9:35 PM EDT	Areal Flood Advisory	GSP	Burke	100 min
Jul 11, 4:47 PM EDT	Areal Flood Advisory	GSP	Buncombe	3 hr
Jul 11, 6:04 PM EDT	Areal Flood Advisory	GSP	Rutherford	3 hr

Nearby

Flash Flood Warnings in North Carolina, 2012 Every 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.