Alert archive / Virginia / Flash Flood Warnings in 2016

Flash Flood Warning 25, NWS Blacksburg, VA

June 27, 2016Giles County, Virginia; Mercer County, West Virginia

NWS Blacksburg, VA issued this flash flood warning at Jun 27, 2016, 5:39 PM EDT for Giles County, Virginia; Mercer County, West Virginia. 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
Jun 27, 2016, 5:39 PM EDT (21:39 UTC)
Expired
Jun 27, 2016, 9:30 PM EDT
In force
4 hr
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon
Flood severity
None

Counties Giles County, VA, Mercer County, WV

The radar

The Roanoke radar (KFCX), 84 km from the middle of the area, began a volume at 21:42 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

TimeReportWhereRemark
Jun 27, 6:20 PM EDTFLASH FLOOD3 N Narrows, VAWATER FLOWING OVER OLD VIRGINIA AVENUE IN RICH CREEK. VIA SOCIAL MEDIA.

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

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 9.7 hours before the alert went out and 142 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-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2016-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2016-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
3 J/kg
Mixed-layer CIN
-170 J/kg
Mixed-layer LCL
819 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

583 
WGUS51 KRNK 272139
FFWRNK
VAC071-WVC055-280130-
/O.NEW.KRNK.FF.W.0025.160627T2139Z-160628T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
539 PM EDT MON JUN 27 2016

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN GILES COUNTY IN VIRGINIA...
  MERCER COUNTY IN WEST VIRGINIA...

* UNTIL 930 PM EDT
    
* AT 534 PM EDT...DOPPLER RADAR INDICATED AN AREA OF THUNDERSTORMS
  SAGGING SLOWLY SOUTH THROUGH THE NORTHERN PART OF MERCER
  COUNTY...AS WELL AS INTO THE RICH CREEK AREA OF GILES COUNTY.
  UP TO TWO INCHES OF RAIN HAVE ALREADY FALLEN IN THE WARNED AREA
  DURING THE LAST 1 TO 2 HOURS...AND ADDITIONAL RAINFALL OF UP TO
  2 INCHES IS LIKELY DURING THE NEXT 2 HOURS. THE GROUND IN THE
  REGION IS EXTREMELY SATURATED FROM RAINFALL LATE LAST WEEK. FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PRINCETON...
  PEARISBURG...
  NARROWS...
  ATHENS...
  AND PETERSTOWN. 

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.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 3742 8131 3741 8129 3742 8128 3746 8131
      3750 8126 3751 8121 3757 8120 3760 8113
      3758 8109 3743 8086 3740 8079 3737 8077
      3738 8073 3736 8070 3725 8097 3727 8101
      3730 8098 3729 8105 3741 8132

$$

RAB
3 follow-up statements
535 
WGUS71 KRNK 272236
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
636 PM EDT MON JUN 27 2016

VAC071-WVC055-280130-
/O.CON.KRNK.FF.W.0025.000000T0000Z-160628T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILES VA-MERCER WV-
636 PM EDT MON JUN 27 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR 
NORTHWESTERN GILES AND MERCER COUNTIES...

AT 633 PM EDT...DOPPLER RADAR INDICATED THAT RAINFALL WAS DIMINISHING
WITHIN THE WARNED AREA. RAINFALL AMOUNTS DURING THE PAST HOUR HAVE
RANGED FROM 2 TO 2.5 INCHES IN THE RICH CREEK AND GLEN LYN AREAS TO 
LESS THAN AN INCH IN THE ATHENS AREA. THE GROUND IN THE REGION IS VERY
SATURATED FROM EXCESSIVE RAINFALL LATE LAST WEEK. FLASH FLOODING
REMAINS POSSIBLE.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PRINCETON...
PEARISBURG...
NARROWS...
ATHENS...
AND PETERSTOWN. 

ADDITIONAL RAINFALL AMOUNTS OF 1 INCH ARE POSSIBLE IN THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 3742 8131 3741 8129 3742 8128 3746 8131
      3750 8126 3751 8121 3757 8120 3760 8113
      3758 8109 3743 8086 3740 8079 3737 8077
      3738 8073 3736 8070 3725 8097 3727 8101
      3730 8098 3729 8105 3741 8132

$$

RAB
448 
WGUS71 KRNK 280029
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
829 PM EDT MON JUN 27 2016

VAC071-WVC055-280130-
/O.CON.KRNK.FF.W.0025.000000T0000Z-160628T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILES VA-MERCER WV-
829 PM EDT MON JUN 27 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR 
NORTHWESTERN GILES AND MERCER COUNTIES...

AT 824 PM EDT...DOPPLER RADAR INDICATED THAT ONLY VERY LIGHT RAIN
REMAINED IN THE WARNED AREA. FROM TWO TO THREE INCHES OF RAIN FELL
FROM LERONA TO RICH CREEK. FLASH FLOODING WAS OBSERVED IN THE RICH CREEK
AREA DURING THE PAST TWO HOURS. EXCESSIVE RAINFALL FROM LATE LAST
WEEK HAS LEFT THE GROUND COMPLETELY SATURATED IN THIS AREA. THUS...
EVEN THOUGH THE RAIN HAS ENDED...CONSIDERABLY RUNOFF WILL LIKELY 
CONTINUE UNTIL 930 PM EDT...WHICH MAY RESULT IN SOME SMALL CREEKS
AND STREAMS REMAINING NEAR BANKFULL OR EXCEEDING BANKFUL STAGE 
FOR A WHILE LONGER.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PRINCETON...
PEARISBURG...
NARROWS...
ATHENS...
AND PETERSTOWN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 3742 8131 3741 8129 3742 8128 3746 8131
      3750 8126 3751 8121 3757 8120 3760 8113
      3758 8109 3743 8086 3740 8079 3737 8077
      3738 8073 3736 8070 3725 8097 3727 8101
      3730 8098 3729 8105 3741 8132

$$

RAB
119 
WGUS71 KRNK 280126
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
926 PM EDT MON JUN 27 2016

VAC071-WVC055-280136-
/O.EXP.KRNK.FF.W.0025.000000T0000Z-160628T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILES VA-MERCER WV-
926 PM EDT MON JUN 27 2016

...THE FLASH FLOOD WARNING FOR 
NORTHWESTERN GILES AND MERCER COUNTIES WILL EXPIRE AT 930 PM EDT...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. PLEASE CONTINUE TO HEED ALL 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 3742 8131 3741 8129 3742 8128 3746 8131
      3750 8126 3751 8121 3757 8120 3760 8113
      3758 8109 3743 8086 3740 8079 3737 8077
      3738 8073 3736 8070 3725 8097 3727 8101
      3730 8098 3729 8105 3741 8132

$$

WP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 12:18 PM EDTSpecial Weather StatementRNKTazewell57 min
Jun 27, 1:08 PM EDTSpecial Weather StatementRNKRoanoke, City of Roanoke, City of Salem67 min
Jun 27, 2:28 PM EDTSpecial Weather StatementRNKCarroll47 min
Jun 27, 2:54 PM EDTSpecial Weather StatementRNKFloyd66 min
Jun 27, 3:17 PM EDTFlash Flood WarningRNKFloyd, Franklin, Patrick6 hr
Jun 27, 3:36 PM EDTSpecial Weather StatementRNKHenry, City of Martinsville39 min
Jun 27, 5:57 PM EDTSpecial Weather StatementRNKAlleghany, Amherst, Bland, Botetourt, Craig, Giles and 12 more93 min
Jun 27, 6:22 PM EDTFlash Flood WarningRNKAlleghany, City of Covington4 hr
Jun 27, 6:52 PM EDTFlash Flood WarningRNKAmherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lynchburg4 hr
Jun 27, 7:28 PM EDTSevere Thunderstorm WarningRNKAmherst, Appomattox, Campbell, City of Lynchburg62 min
Jun 27, 10:10 AM EDTFlash Flood WarningRNKGreenbrier, Summers8 hr
Jun 27, 4:32 PM EDTSevere Thunderstorm WarningRNKGreenbrier, Summers34 min
Jun 27, 5:13 PM EDTFlash Flood WarningRNKMonroe4 hr
Jun 27, 6:03 PM EDTAreal Flood WarningRNKGreenbrier, Summers6 hr

Nearby

Flash Flood Warnings in Virginia, 2016Flash Flood Warnings in West Virginia, 2016Every 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.