Alert archive / North Carolina / Flash Flood Warnings in 2011

Flash Flood Warning 4, NWS Greenville-Spartanburg, SC

March 6, 2011Jackson County, Transylvania County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Mar 6, 2011, 6:29 AM EST for Jackson County, Transylvania County, North Carolina. It was in force for 4 hr. 2 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: Mar 6, 2011, 6:29 AM EST (11:29 UTC)
Expired: Mar 6, 2011, 10:30 AM EST
In force: 4 hr
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Flood severity: None

Counties Jackson County, NC, Transylvania County, NC

The radar

The Greer radar (KGSP), 68 km from the middle of the area, began a volume at 11:32 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
Mar 6, 7:00 AM EST	FLASH FLOOD	4 Ne Rosman, NC	FRENCH BROAD RIVER IN THE ROSMAN AREA OUT OF ITS BANKS. ROAD CLOSURES INCLUDE HANNAH FORD ROAD...GREEN ROAD...AND ISLAND FORD ROAD.
Mar 6, 8:15 AM EST	FLASH FLOOD	3 Ne Brevard, NC	DAVIDSON RIVER OUT OF ITS BANKS AND DAVIDSON RIVER ROAD IS CLOSED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 11.5 hours before the alert went out and 249 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: 10 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 581 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 319 m²/s²
0-3 km storm-relative helicity: 262 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.

563 
WGUS52 KGSP 061129
FFWGSP
NCC099-175-061530-
/O.NEW.KGSP.FF.W.0004.110306T1129Z-110306T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
629 AM EST SUN MAR 6 2011

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS EXTENDED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN JACKSON COUNTY IN WESTERN NORTH CAROLINA...
  TRANSYLVANIA COUNTY IN WESTERN NORTH CAROLINA...

* UNTIL 1030 AM EST

* AT 625 AM EST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING  
  ALONG THE EAST FORK OF THE FRENCH BROAD RIVER ALONG EAST FORK ROAD
  AT GLADY FORK ROAD. THE LITTLE RIVER IN THE EASTERN PART OF THE 
  COUNTY WAS ALSO ABOVE FLOOD STAGE AND WAS LIKELY FLOODING ROADS. 
  RAINFALL RATES ARE NOT QUITE AS HEAVY AS EARLIER...BUT MODERATE
  TO HEAVY RAIN IS LIKELY TO CONTINUE THROUGH MID-MORNING.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE THE AMOUNT OF FLASH
  FLOODING TO INCREASE OVER THE NEXT COUPLE HOURS. MANY ROADS ALONG 
  THE FRENCH BROAD RIVER AND THE LITTLE RIVER WILL BE COVERED BY 
  WATER. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

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 3521 8321 3531 8284 3541 8274 3528 8260
      3526 8261 3515 8258 3512 8269 3510 8269
      3509 8272 3509 8276 3500 8310 3506 8316
      3509 8315 3515 8321

$$
MCAVOY

2 follow-up statements

865 
WGUS72 KGSP 061427
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
927 AM EST SUN MAR 6 2011

NCC099-175-061530-
/O.CON.KGSP.FF.W.0004.000000T0000Z-110306T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRANSYLVANIA NC-JACKSON NC-
927 AM EST SUN MAR 6 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN JACKSON AND
TRANSYLVANIA COUNTIES UNTIL 1030 AM EST...

AT 920 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE HEAVY RAINFALL ACROSS SOUTHERN JACKSON AND TRANSYLVANIA 
COUNTIES. RAIN GAGE REPORTS INDICATE RAINFALL TOTALS OF 3 TO 6 
INCHES...WITH ISOLATED 8 INCH TOTALS...OVER THE PAST 24 HOURS. 
ADDITIONAL HEAVY RAIN RATES OF ONE QUARTER TO ONE HALF INCH PER HOUR 
ARE LIKELY THROUGH AT LEAST 11 AM. THIS FLASH FLOOD WARNING MAY NEED 
TO BE EXTENDED IN TIME OR REPLACED WITH A LONGER DURATION FLOOD 
WARNING BY 1030 AM.

FLOODING OF RIVERS...STREAMS...AND CREEKS SHOULD BECOME INCREASINGLY 
WIDESPREAD THIS MORNING. FLOODING HAS ALREADY BEEN REPORTED ALONG 
THE LITTLE RIVER NEAR PENROSE...THE DAVIDSON RIVER WHICH WAS 
FLOODING DAVIDSON ROAD NEAR BREVARD...AND THE FRENCH BROAD RIVER IN 
THE ROSMAN AREA. ADDITIONAL FLOODING WILL LIKELY DEVELOP ALONG 
TRIBUTARIES NEAR LAKE TOXAWAY...AS WELL AS ALONG STREAMS AND CREEKS 
IN THE CEDAR MOUNTAIN COMMUNITY.

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. TURN AROUND AND FIND ANOTHER ROUTE.

PLEASE REPORT ANY FLOODING TO THE NATIONAL WEATHER SERVICE ON OUR 
AUTOMATED REPORTING LINE AT 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3521 8321 3531 8284 3541 8274 3528 8260
      3526 8261 3515 8258 3512 8269 3510 8269
      3509 8272 3509 8276 3500 8310 3506 8316
      3509 8315 3515 8321

$$

GERAPETRITIS

984 
WGUS72 KGSP 061528
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1028 AM EST SUN MAR 6 2011

NCC099-175-061540-
/O.EXP.KGSP.FF.W.0004.000000T0000Z-110306T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRANSYLVANIA NC-JACKSON NC-
1028 AM EST SUN MAR 6 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN JACKSON
AND TRANSYLVANIA COUNTIES WILL BE ALLOWED TO EXPIRE AT 1030 AM EST...

THIS FLASH FLOOD WARNING HAS BEEN REPLACED BY A FLOOD WARNING UNTIL 
100 PM EST FOR LINGERING HIGH WATER CONDITIONS ACROSS SOUTHERN 
JACKSON AND TRANSYLVANIA COUNTIES. PLEASE REFER TO THE ACTIVE FLOOD 
WARNING FOR FURTHER DETAILS.

LAT...LON 3521 8321 3531 8284 3541 8274 3528 8260
      3526 8261 3515 8258 3512 8269 3510 8269
      3509 8272 3509 8276 3500 8310 3506 8316
      3509 8315 3515 8321

$$

GERAPETRITIS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 6, 12:22 AM EST	Flash Flood Warning	GSP	Jackson, Transylvania	6 hr
Mar 6, 2:47 AM EST	Areal Flood Advisory	GSP	Macon	103 min
Mar 6, 3:53 AM EST	Areal Flood Advisory	GSP	Henderson, Polk, Rutherford	3 hr
Mar 6, 4:17 AM EST	Flash Flood Warning	GSP	Macon	6 hr
Mar 6, 4:35 AM EST	Areal Flood Advisory	GSP	Avery, Burke, Caldwell, McDowell, Mitchell	3 hr
Mar 6, 5:19 AM EST	Flash Flood Warning	GSP	Henderson, Polk, Rutherford	6 hr
Mar 6, 5:28 AM EST	Areal Flood Advisory	GSP	Graham, Haywood, Jackson, Macon, Swain	3 hr
Mar 6, 8:12 AM EST	River Flood Warning	GSP	Henderson, Transylvania	56 hr
Mar 6, 9:35 AM EST	Areal Flood Advisory	GSP	Alexander, Avery, Burke, Caldwell, Catawba, Cleveland and 6 more	6 hr
Mar 6, 9:37 AM EST	Winter Weather Advisory	GSP	Avery, Haywood, Madison, Mitchell, Swain, Yancey	7 hr
Mar 6, 9:49 AM EST	Areal Flood Warning	GSP	Macon	3 hr
Mar 6, 10:21 AM EST	Areal Flood Warning	GSP	Jackson, Transylvania	3 hr
Mar 6, 11:13 AM EST	Areal Flood Warning	GSP	Henderson, Polk, Rutherford	3 hr
Mar 6, 11:54 AM EST	Special Weather Statement	GSP	Cabarrus, Mecklenburg	51 min
Mar 6, 12:29 PM EST	Areal Flood Advisory	GSP	Macon	3 hr
Mar 6, 12:29 PM EST	Flash Flood Warning	GSP	Burke, Caldwell, McDowell	4 hr
Mar 6, 12:42 PM EST	Areal Flood Advisory	GSP	Jackson, Transylvania	6 hr
Mar 6, 1:44 PM EST	Areal Flood Advisory	GSP	Henderson, Polk, Rutherford	4 hr
Mar 6, 2:36 PM EST	River Flood Advisory	GSP	Madison	7 hr
Mar 6, 2:54 PM EST	River Flood Advisory	GSP	Buncombe	24 hr
Mar 6, 4:40 PM EST	Areal Flood Warning	GSP	Burke	5 hr
Mar 6, 5:40 PM EST	Areal Flood Advisory	GSP	Henderson	3 hr
Mar 6, 6:32 PM EST	Areal Flood Advisory	GSP	Transylvania	3 hr

Nearby

Flash Flood Warnings in North Carolina, 2011 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.