Alert archive / North Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 30, NWS Blacksburg, VA

July 27, 2016Watauga County, North Carolina

NWS Blacksburg, VA issued this flash flood warning at Jul 27, 2016, 6:01 PM EDT for Watauga County, North Carolina. It was in force for 6 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 27, 2016, 6:01 PM EDT (22:01 UTC)
Expired: Jul 28, 2016, 12:00 AM EDT
In force: 6 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

County Watauga County, NC

The radar

The Knoxville radar (KMRX), 143 km from the middle of the area, began a volume at 22:04 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

Time	Report	Where	Remark
Jul 27, 6:30 PM EDT	HEAVY RAIN 4.43	6 Wsw Boone, NC	ALMOST 4.5 INCHES OF RAIN FELL IN 90 MINUTES NEAR VALLE CRUCIS.

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, 10.0 hours before the alert went out and 173 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: 1613 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 982 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

596 
WGUS51 KRNK 272201
FFWRNK
NCC189-280400-
/O.NEW.KRNK.FF.W.0030.160727T2201Z-160728T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
601 PM EDT WED JUL 27 2016

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN WATAUGA COUNTY IN NORTHWESTERN NORTH CAROLINA...

* UNTIL MIDNIGHT EDT THURSDAY
    
* AT 600 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN WEST OF BOONE IN THE VALLE CRUCIS AREA. FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BOONE...
  BEECH MOUNTAIN...
  FOSCOE...
  SUGAR GROVE...
  AND SEVEN DEVILS.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF FLOODING...
INCLUDING MUDSLIDES OR ROAD CLOSURES...TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE AT 1...8 6 6...2 1 5...4 3 2 4. REPORTS
AND PICTURES CAN ALSO BE SHARED ON THE NATIONAL WEATHER SERVICE
BLACKSBURG FACEBOOK PAGE AND ON TWITTER.

&&

LAT...LON 3626 8188 3628 8177 3621 8163 3612 8180
      3618 8184 3622 8190

$$

PC

2 follow-up statements

996 
WGUS71 KRNK 272316
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
716 PM EDT WED JUL 27 2016

NCC189-280400-
/O.CON.KRNK.FF.W.0030.000000T0000Z-160728T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WATAUGA NC-
716 PM EDT WED JUL 27 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR 
SOUTHWESTERN WATAUGA COUNTY...

AT 706 PM EDT...DOPPLER RADAR RAINFALL ESTIMATED THAT THUNDERSTORMS
HAVE PRODUCED 3 TO 5 INCHES OF RAIN ACROSS PARTS OF SOUTHWESTERN
BOONE COUNTY. A LOCAL WEATHER OBSERVER REPORTED NEARLY 4.5 INCHES IN
ABOUT 90 MINUTES NEAR VALLE CRUCIS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BOONE...
BEECH MOUNTAIN...
FOSCOE...
SUGAR GROVE...
AND SEVEN DEVILS.

THE WATAUGA RIVER FROM FOSCOE TO VALLE CRUCIS IS RISING RAPIDLY DUE
TO THE RUNOFF AND AT LEAST ONE LOW WATER BRIDGE IS REPORTED TO BE
FLOODED. EXPECT SHARP RISES IN RIVER LEVELS TO CONTINUE ALONG THE
WATAUGA RIVER. IN ADDITION A MUDSLIDE WAS REPORTED ALONG BROADSTONE
ROAD SOUTH OF VALLE CRUCIS PARTIALLY CLOSING THE ROAD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF FLOODING...
INCLUDING MUDSLIDES OR ROAD CLOSURES...TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE AT 1...8 6 6...2 1 5...4 3 2 4. REPORTS
AND PICTURES CAN ALSO BE SHARED ON THE NATIONAL WEATHER SERVICE
BLACKSBURG FACEBOOK PAGE AND ON TWITTER.

&&

LAT...LON 3626 8188 3628 8177 3621 8163 3612 8180
      3618 8184 3622 8190

$$

PC

174 
WGUS71 KRNK 280039
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
839 PM EDT WED JUL 27 2016

NCC189-280048-
/O.CAN.KRNK.FF.W.0030.000000T0000Z-160728T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WATAUGA NC-
839 PM EDT WED JUL 27 2016

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN WATAUGA COUNTY IS
CANCELLED...

FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A
THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF FLOODING...
INCLUDING MUDSLIDES OR ROAD CLOSURES...TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE AT 1...8 6 6...2 1 5...4 3 2 4. REPORTS
AND PICTURES CAN ALSO BE SHARED ON THE NATIONAL WEATHER SERVICE
BLACKSBURG FACEBOOK PAGE AND ON TWITTER.

LAT...LON 3626 8188 3628 8177 3621 8163 3612 8180
      3618 8184 3622 8190

$$

11

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 26, 9:02 PM EDT	Special Weather Statement	RNK	Ashe	58 min
Jul 27, 12:16 AM EDT	Special Weather Statement	RNK	Caswell, Rockingham	14 min
Jul 27, 12:30 AM EDT	Special Weather Statement	RNK	Caswell	60 min
Jul 27, 1:05 PM EDT	Special Weather Statement	RNK	Wilkes	40 min
Jul 27, 1:46 PM EDT	Special Weather Statement	RNK	Wilkes	29 min
Jul 27, 2:01 PM EDT	Special Weather Statement	RNK	Rockingham	29 min
Jul 27, 2:28 PM EDT	Special Weather Statement	RNK	Wilkes	47 min
Jul 27, 3:36 PM EDT	Special Weather Statement	RNK	Alleghany	39 min
Jul 27, 4:26 PM EDT	Special Weather Statement	RNK	Watauga	64 min
Jul 27, 4:31 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry	59 min
Jul 27, 5:25 PM EDT	Areal Flood Advisory	RNK	Watauga	3 hr
Jul 27, 5:33 PM EDT	Special Weather Statement	RNK	Caswell	27 min
Jul 27, 5:37 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	68 min
Jul 27, 5:46 PM EDT	Special Weather Statement	RNK	Stokes	44 min
Jul 27, 6:24 PM EDT	Special Weather Statement	RNK	Stokes	66 min
Jul 27, 6:26 PM EDT	Special Weather Statement	RNK	Wilkes	64 min
Jul 27, 6:31 PM EDT	Severe Thunderstorm Warning	RNK	Wilkes, Yadkin	59 min
Jul 27, 6:33 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	45 min
Jul 27, 7:31 PM EDT	Severe Thunderstorm Warning	RNK	Yadkin	41 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.