Alert archive / Virginia / Flash Flood Warnings in 2014

Flash Flood Warning 2, NWS Blacksburg, VA

April 30, 2014Pittsylvania County, City of Danville, Virginia

NWS Blacksburg, VA issued this flash flood warning at Apr 30, 2014, 3:08 PM EDT for Pittsylvania County, City of Danville, Virginia. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 30, 2014, 3:08 PM EDT (19:08 UTC)
Expired: Apr 30, 2014, 6:00 PM EDT
In force: 3 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

Counties City of Danville, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 94 km from the middle of the area, began a volume at 19:09 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.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 7.1 hours before the alert went out and 64 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 452 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 292 m²/s²
0-3 km storm-relative helicity: 371 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

119 
WGUS51 KRNK 301908
FFWRNK
VAC143-590-302200-
/O.NEW.KRNK.FF.W.0002.140430T1908Z-140430T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
308 PM EDT WED APR 30 2014

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN PITTSYLVANIA COUNTY IN SOUTH CENTRAL VIRGINIA...
  THE CITY OF DANVILLE IN SOUTH CENTRAL VIRGINIA...

* UNTIL 600 PM EDT
    
* AT 306 PM EDT...DOPPLER RADAR INDICATED PERSISTENT THUNDERSTORMS 
  ACROSS EASTERN AND SOUTHEASTERN PITTSYLVANIA COUNTY...INCLUDING 
  THE EASTERN PORTIONS OF THE CITY OF DANVILLE. NEARLY 1 INCH OF 
  RAIN HAS FALLEN IN THESE AREAS DURING THE PAST HOUR...ON TOP OF 2 
  TO 2.5 INCHES OF RAIN IN THE PAST 24 TO 36 HOURS. THE GROUND IS 
  COMPLETELY SATURATED AND ADDITIONAL HEAVY RAINFALL WILL RESULT IN 
  NEAR COMPLETE RUNOFF. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  DANVILLE...
  KEELING...
  RINGGOLD...
  AND DANVILLE AIRPORT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3654 7945 3664 7940 3695 7912 3654 7922

$$

RAB

2 follow-up statements

715 
WGUS71 KRNK 302006
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
406 PM EDT WED APR 30 2014

VAC143-590-302200-
/O.CON.KRNK.FF.W.0002.000000T0000Z-140430T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PITTSYLVANIA VA-CITY OF DANVILLE VA-
406 PM EDT WED APR 30 2014

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR 
SOUTHEASTERN PITTSYLVANIA AND THE EASTERN PORTIONS OF THE CITY OF
DANVILLE...

AT 403 PM EDT...ALTHOUGH RAINFALL ACROSS THE WARNED AREA HAS 
DIMINISHED...ADDITIONAL THUNDERSTORMS FROM CASWELL COUNTY 
ARE NOW MOVING NORTHWARD INTO THE WARNED AREA. UP TO 2 INCHES OF 
RAIN HAS FALLEN IN THE WARNED AREA DURING THE PAST TWO 
DAYS...WITH 1/2 INCH OF RAIN DURING THE PAST HOUR. THE GROUND IN 
THE AREA REMAINS SATURATED AND ADDITIONAL RAINFALL WILL RESULT IN 
NEAR COMPLETE RUNOFF. THUS...THE FLASH FLOOD THREAT REMAINS IMMINENT 
IN THE WARNED AREA.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DANVILLE...
KEELING...
RINGGOLD...
AND DANVILLE AIRPORT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3654 7945 3664 7940 3695 7912 3654 7922

$$

RAB

559 
WGUS71 KRNK 302156
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
556 PM EDT WED APR 30 2014

VAC143-590-302203-
/O.EXP.KRNK.FF.W.0002.000000T0000Z-140430T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PITTSYLVANIA VA-CITY OF DANVILLE VA-
556 PM EDT WED APR 30 2014

...THE FLASH FLOOD WARNING FOR 
SOUTHEASTERN PITTSYLVANIA AND THE CITY OF DANVILLE WILL EXPIRE AT
600 PM EDT...

SHOWERS AND THUNDERSTORMS WHICH HAVE BROUGHT HEAVY RAINFALL TO 
THE EASTERN PORTIONS OF PITTSYLVANIA COUNTY...INCLUDING THE 
CITY OF DANVILLE...HAVE MOVED EAST OUT OF THE COUNTY. WHILE 
ADDITIONAL SHOWERS ARE YET POSSIBLE THROUGH THE EVENING...THE 
THREAT FOR FLASH FLOODING HAS ENDED AT THIS TIME.

CONSIDERABLE RUNOFF CAN STILL BE EXPECTED INTO AREA CREEKS AND 
STREAMS FOR SEVERAL MORE HOURS. CREEKS AND STREAMS WILL RUN HIGH. 
PLEASE REFER TO SPECIFIC RIVER FLOOD WARNINGS ALONG THE DAN AND 
ROANOKE RIVERS FOR FURTHER INFORMATION.

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 3654 7945 3664 7940 3695 7912 3654 7922

$$

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 4:13 AM EDT	Special Weather Statement	RNK	City of Martinsville	92 min
Apr 30, 4:47 AM EDT	Areal Flood Advisory	RNK	Henry, Pittsylvania	6 hr
Apr 30, 5:28 AM EDT	Special Weather Statement	RNK	Halifax	62 min
Apr 30, 6:35 AM EDT	Special Weather Statement	RNK	Halifax	40 min
Apr 30, 11:33 AM EDT	Special Weather Statement	RNK	Halifax	57 min
Apr 30, 11:48 AM EDT	Areal Flood Advisory	RNK	Charlotte	117 min
Apr 30, 12:00 PM EDT	Special Weather Statement	RNK	Halifax	30 min
Apr 30, 12:11 PM EDT	Areal Flood Advisory	RNK	Halifax, Pittsylvania	109 min
Apr 30, 12:55 PM EDT	Special Weather Statement	RNK	Charlotte	35 min
Apr 30, 1:29 PM EDT	Special Weather Statement	RNK	Charlotte	31 min
Apr 30, 1:47 PM EDT	Areal Flood Advisory	RNK	Charlotte	118 min
Apr 30, 2:40 PM EDT	Special Weather Statement	RNK	City of Danville	50 min
Apr 30, 2:47 PM EDT	Areal Flood Advisory	RNK	Halifax, Pittsylvania, City of Danville	3 hr
Apr 30, 3:16 PM EDT	Special Weather Statement	RNK	Halifax	59 min
Apr 30, 3:26 PM EDT	Flash Flood Warning	RNK	Campbell, Charlotte, Halifax	3 hr
Apr 30, 3:51 PM EDT	Areal Flood Advisory	RNK	Appomattox, Buckingham	3 hr
Apr 30, 4:23 PM EDT	Special Weather Statement	RNK	Halifax, City of Danville	52 min
Apr 30, 6:54 PM EDT	Areal Flood Warning	RNK	Appomattox, Buckingham, Campbell, Charlotte	3 hr

Nearby

Flash Flood Warnings in Virginia, 2014 Every flash flood warning in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.