Alert archive / North Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 9, NWS Greenville-Spartanburg, SC

April 30, 2016Mecklenburg County, Union County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Apr 30, 2016, 8:26 PM EDT for Mecklenburg County, Union County, North Carolina. It was in force for 3 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: Apr 30, 2016, 8:26 PM EDT (00:26 UTC)
Expired: Apr 30, 2016, 11:30 PM EDT
In force: 3 hr
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Flood severity: None

Counties Mecklenburg County, NC, Union County, NC

The radar

The Greer radar (KGSP), 133 km from the middle of the area, began a volume at 00:25 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
Apr 30, 9:40 PM EDT	FLASH FLOOD	2 E Stallings, NC	WOODHAVEN LANE IN THE HEMBY BRIDGE AREA OF INDIAN TRAIL REPORTS OF AREA ROADS COVERED IN WATER WITH ALL THE DITCHES FULL.
Apr 30, 10:45 PM EDT	FLASH FLOOD	3 N Waxhaw, NC	2 ROADS WERE TEMPORARILY CLOSED DUE TO FLOOD WATERS SATURDAY NIGHT...PROVIDENCE ROAD AND ANTIOCH CHURCH ROAD.

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, 0.4 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.

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: 23 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 526 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

996 
WGUS52 KGSP 010026
FFWGSP
NCC119-179-010330-
/O.NEW.KGSP.FF.W.0009.160501T0026Z-160501T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
826 PM EDT SAT APR 30 2016

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MECKLENBURG COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  NORTHWESTERN UNION COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 1130 PM EDT
    
* AT 823 PM EDT...DOPPLER RADAR INDICATED VERY HEAVY RAIN PRODUCING
  THUNDERSTORMS DEVELOPING INTO THE WARNED AREA. LOCALLY UP TO ONE
  INCH OF RAIN HAS ALREADY FALLEN OR WILL SHORTLY IN PARTS OF SOUTH
  CHARLOTTE. LOCALIZED RAINFALL RATES MAY BLOSSOM TO NEAR 2 INCHES
  PER HOUR AS THE EVENING WEARS ON.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... UPTOWN
  CHARLOTTE...HUNTERSVILLE...CENTRAL CHARLOTTE...SOUTH CHARLOTTE...
  SOUTHWEST CHARLOTTE...EAST CHARLOTTE...NORTHEAST
  CHARLOTTE...NORTHWEST CHARLOTTE...MATTHEWS AND MINT HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3516 8044 3489 8079 3494 8078 3511 8093
      3505 8104 3506 8106 3515 8102 3516 8100
      3534 8098 3536 8092 3538 8095 3537 8098
      3539 8095 3542 8095 3543 8076 3542 8075
      3540 8077 3535 8069 3527 8067 3518 8050

$$

CSH

1 follow-up statement

358 
WGUS72 KGSP 010201
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1001 PM EDT SAT APR 30 2016

NCC119-179-010330-
/O.CON.KGSP.FF.W.0009.000000T0000Z-160501T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MECKLENBURG NC-UNION NC-
1001 PM EDT SAT APR 30 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
MECKLENBURG AND NORTHWESTERN UNION COUNTIES...

AT 1000 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. 3-5 INCHES OF RAIN HAVE FALLEN
SINCE 630 PM EDT ALONG THE UNION/MECKLENBERG COUNTY LINE. FLASH
FLOODING IS EXPECTED TO BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
UPTOWN CHARLOTTE...HUNTERSVILLE...CENTRAL CHARLOTTE...SOUTH CHARLOTTE...
SOUTHWEST CHARLOTTE...EAST CHARLOTTE...NORTHEAST CHARLOTTE...NORTHWEST
CHARLOTTE...MATTHEWS AND MINT HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN VEHICLES. ONLY A FEW INCHES OF RAPIDLY
FLOWING WATER CAN CARRY AWAY YOUR VEHICLE. IT IS NOT WORTH THE RISK.
PLEASE TURN AROUND...DONT DROWN.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

WHEN IT IS SAFE TO DO SO...PLEASE REPORT FLOOD WATERS OR LANDSLIDES
FLOWING OVER ROADS OR THREATENING PROPERTY TO THE NATIONAL WEATHER
SERVICE IN GREENVILLE-SPARTANBURG BY CALLING TOLL FREE...1...800...2
6 7...8 1 0 1...BY POSTING ON OUR FACEBOOK PAGE...NWSGSP...OR VIA
TWITTER USING HASHTAG NWSGSP. YOUR MESSAGE SHOULD DESCRIBE THE EVENT
AND THE SPECIFIC LOCATION WHERE IT OCCURRED...INCLUDING ROADWAYS...
NEARBY CROSS STREETS...STREAM NAMES AND OTHER LANDMARKS. YOUR REPORTS
ARE CRITICAL TO HELPING US VERIFY FLOOD EVENTS AND IMPROVE FUTURE
WARNINGS.

&&

LAT...LON 3516 8044 3489 8079 3494 8078 3511 8093
      3505 8104 3506 8106 3515 8102 3516 8100
      3534 8098 3536 8092 3538 8095 3537 8098
      3539 8095 3542 8095 3543 8076 3542 8075
      3540 8077 3535 8069 3527 8067 3518 8050

$$

TDP

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 8:22 PM EDT	Special Weather Statement	GSP	Union	23 min
Apr 30, 8:48 PM EDT	Special Weather Statement	GSP	Union	27 min
Apr 30, 9:22 PM EDT	Special Weather Statement	GSP	Union	23 min
Apr 30, 9:50 PM EDT	Special Weather Statement	GSP	Union	25 min
Apr 30, 10:19 PM EDT	Special Weather Statement	GSP	Union	26 min
May 1, 6:24 AM EDT	Special Weather Statement	GSP	Gaston	36 min
May 1, 7:53 AM EDT	Areal Flood Advisory	GSP	Mecklenburg, Union	3 hr
May 1, 2:35 PM EDT	Special Weather Statement	GSP	Polk	25 min
May 1, 2:43 PM EDT	Special Weather Statement	GSP	Polk	32 min
May 1, 3:47 PM EDT	Special Weather Statement	GSP	Polk	28 min
May 1, 3:52 PM EDT	Severe Thunderstorm Warning	GSP	Polk, Rutherford	38 min
May 1, 4:01 PM EDT	Special Weather Statement	GSP	Buncombe	29 min
May 1, 4:07 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Madison, Yancey	23 min
May 1, 4:27 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, McDowell, Yancey	48 min
May 1, 5:06 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, McDowell	39 min
May 1, 5:19 PM EDT	Special Weather Statement	GSP	Avery, Mitchell	26 min
May 1, 5:37 PM EDT	Special Weather Statement	GSP	Avery	38 min
May 1, 5:44 PM EDT	Severe Thunderstorm Warning	GSP	Burke, McDowell, Rutherford	46 min
May 1, 6:27 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Rutherford	48 min
May 1, 7:12 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Gaston	63 min
May 1, 7:29 PM EDT	Special Weather Statement	GSP	Cabarrus, Mecklenburg, Union	46 min

Nearby

Flash Flood Warnings in North Carolina, 2016 Every flash flood warning in 2016

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.