Alert archive / North Carolina / Flash Flood Warnings in 2012

Flash Flood Warning 2, NWS Greenville-Spartanburg, SC

May 14, 2012Alexander County, Caldwell County, Iredell County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at May 14, 2012, 6:31 PM EDT for Alexander County, Caldwell County, Iredell County, North Carolina. It was in force for 3 hr. 7 reports 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: May 14, 2012, 6:31 PM EDT (22:31 UTC)
Expired: May 14, 2012, 9:47 PM EDT
In force: 3 hr
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Flood severity: None

Counties Alexander County, NC, Caldwell County, NC, Iredell County, NC

The radar

The Roanoke radar (KFCX), 146 km from the middle of the area, began a volume at 22:30 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
May 14, 6:45 PM EDT	FLASH FLOOD	2 Ene Patterson, NC	WATER OVER THE YADKIN RIVER BRIDGE ON INDIAN GRAVE ROAD. A MUD SLIDE IS POSSIBLY BLOCKING ONE LANE OF HIGHWAY 268.
May 14, 6:50 PM EDT	FLASH FLOOD	5 Ene Patterson, NC	A FOOT OF WATER OVER PINEY GROVE CIRCLE.
May 14, 6:58 PM EDT	FLASH FLOOD	2 N Lenoir, NC	WATER FLOODED YARD UP TO THE PORCH OF A HOUSE ON HAZEL LEE STREET.
May 14, 7:00 PM EDT	FLASH FLOOD	2 Ne Ellendale, NC	A BRIDGE ON DAVID HERMAN ROAD HAS BEEN WASHED OUT.
May 14, 7:10 PM EDT	FLASH FLOOD	3 N Lenoir, NC	SEVERAL BUILDINGS IN WATER ON JOHN KIRBY PLACE...OFF OF INDIAN GRAVE ROAD.
May 14, 7:23 PM EDT	FLASH FLOOD	2 Nnw Lenoir, NC	SEVERAL HOMES FLOODED ALONG ECHO DRIVE. THE ROAD IS BLOCKED BY DEEP WATER.
May 14, 7:35 PM EDT	FLASH FLOOD	Taylorsville, NC	SEVERAL ROADS CLOSED ACROSS THE COUNTY DUE TO FLASH FLOODING.

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, 10.5 hours before the alert went out and 120 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: 26 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 713 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 160 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.

041 
WGUS52 KGSP 142231
FFWGSP
NCC003-027-097-150430-
/O.NEW.KGSP.FF.W.0002.120514T2231Z-120515T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
631 PM EDT MON MAY 14 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ALEXANDER COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  EASTERN CALDWELL COUNTY IN WESTERN NORTH CAROLINA...
  NORTHERN IREDELL COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 1230 AM EDT

* AT 627 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. ADDITIONAL RAINFALL AMOUNTS OF UP TO 2 INCHES ARE     
  LIKELY ACROSS THE WARNING AREA THIS EVENING. THIS IS ON TOP OF THE 
  3 TO 4 INCHES OF RAIN THAT FELL ACROSS THE AREA LAST NIGHT THROUGH 
  THIS MORNING.  

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LENOIR...TAYLORSVILLE...BETHLEHEM...ELLENDALE...HARMONY...HUDSON...
  KINGS CREEK AND STONY POINT.

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.

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 3608 8142 3600 8132 3603 8127 3603 8108
      3607 8098 3606 8070 3581 8072 3581 8114
      3583 8115 3581 8122 3581 8159 3582 8160
      3609 8150

$$
LANE

2 follow-up statements

345 
WGUS72 KGSP 142346
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
746 PM EDT MON MAY 14 2012

NCC003-027-097-150430-
/O.CON.KGSP.FF.W.0002.000000T0000Z-120515T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALEXANDER NC-IREDELL NC-CALDWELL NC-
746 PM EDT MON MAY 14 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN CALDWELL...
NORTHERN IREDELL AND ALEXANDER COUNTIES UNTIL 1230 AM EDT...

AT 735 PM EDT...COUNTY COMMUNICATION CENTERS REPORT SIGNIFICANT 
FLOODING HAS DEVELOPED ACROSS CENTRAL CALDWELL COUNTY...MAINLY ALONG 
THE HIGHWAY 321 CORRIDOR BETWEEN LENOIR AND PATTERSON...WHERE 
SEVERAL HOMES HAVE BEEN FLOODED. FLOODING HAS ALSO BEEN REPORTED 
ACROSS WESTERN ALEXANDER COUNTY.  

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES THE THUNDERSTORMS 
PRODUCING THE HEAVIEST RAINFALL HAVE MOVED SOUTH OF THE FLOODED 
AREAS. HOWEVER...CONTINUED MODERATE TO OCCASIONALLY HEAVY RAIN WILL 
CAUSE FLOODING PROBLEMS TO PERSIST NEAR LENOIR AND IN WESTERN 
ALEXANDER COUNTIES. 

EXCESSIVE RAINFALL COULD ALSO LEAD TO ADDITIONAL FLASH FLOODING 
ACROSS SOUTHERN ALEXANDER AND NORTHERN IREDELL COUNTIES. SOME 
LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...LENOIR... 
TAYLORSVILLE...BETHLEHEM...ELLENDALE...HARMONY...HUDSON...AND STONY 
POINT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM 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 ALSO SUBJECT TO FLOODING.

&&

LAT...LON 3608 8142 3600 8132 3603 8127 3603 8108
      3607 8098 3606 8070 3581 8072 3581 8114
      3583 8115 3581 8122 3581 8159 3582 8160
      3609 8150

$$
LANE

139 
WGUS72 KGSP 150147
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
947 PM EDT MON MAY 14 2012

NCC003-027-097-150159-
/O.CAN.KGSP.FF.W.0002.000000T0000Z-120515T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALEXANDER NC-IREDELL NC-CALDWELL NC-
947 PM EDT MON MAY 14 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EASTERN CALDWELL...
NORTHERN IREDELL AND ALEXANDER COUNTIES HAS BEEN CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. 
HOWEVER...FLOODING FROM THE EARLIER RAINFALL PERSISTS IN SOME 
AREAS...SO THE FLASH FLOOD WARNING HAS BEEN REPLACED WITH A FLOOD 
WARNING. 

LAT...LON 3608 8142 3600 8132 3603 8127 3603 8108
      3607 8098 3606 8070 3581 8072 3581 8114
      3583 8115 3581 8122 3581 8159 3582 8160
      3609 8150

$$
LANE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 5:29 AM EDT	Areal Flood Advisory	GSP	Henderson, Polk, Rutherford	3 hr
May 14, 5:44 AM EDT	Flash Flood Warning	GSP	Henderson	6 hr
May 14, 8:49 AM EDT	Areal Flood Advisory	GSP	Burke, Catawba, Cleveland, Lincoln	2 hr
May 14, 4:13 PM EDT	Special Weather Statement	GSP	Mitchell	62 min
May 14, 4:46 PM EDT	Special Weather Statement	GSP	Haywood	29 min
May 14, 4:52 PM EDT	Areal Flood Advisory	GSP	Cleveland	3 hr
May 14, 5:09 PM EDT	Special Weather Statement	GSP	Union	51 min
May 14, 5:23 PM EDT	Flash Flood Watch	GSP	Alexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 15 more	10 hr
May 14, 5:24 PM EDT	Areal Flood Advisory	GSP	Iredell	96 min
May 14, 5:39 PM EDT	Areal Flood Advisory	GSP	Burke, McDowell	81 min
May 14, 5:46 PM EDT	Special Weather Statement	GSP	McDowell	29 min
May 14, 5:56 PM EDT	Special Weather Statement	GSP	Polk	34 min
May 14, 6:54 PM EDT	Areal Flood Advisory	GSP	Rutherford	59 min
May 14, 7:02 PM EDT	Areal Flood Advisory	GSP	Burke, Cleveland, Rutherford	118 min
May 14, 7:24 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland	38 min
May 14, 7:27 PM EDT	Areal Flood Advisory	GSP	Catawba, Iredell	93 min

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.