Alert archive / Virginia / Flash Flood Warnings in 2016

Flash Flood Warning 35, NWS Blacksburg, VA

September 29, 20166 counties in Virginia

NWS Blacksburg, VA issued this flash flood warning at Sep 29, 2016, 8:50 PM EDT for 6 counties in 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: Sep 29, 2016, 8:50 PM EDT (00:50 UTC)
Expired: Sep 30, 2016, 12:45 AM EDT
In force: 4 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

Counties Carroll County, VA, City of Radford, VA, Floyd County, VA, Montgomery County, VA, Patrick County, VA, Pulaski County, VA

The radar

The Roanoke radar (KFCX), 24 km from the middle of the area, began a volume at 00:51 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
Sep 29, 11:00 PM EDT	FLOOD	2 Ne Blacksburg, VA	INDIAN RUN CREEK OUT OF ITS BANKS AND COVERING HAPPY HOLLOW ROAD

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 00:00Z, 0.8 hours before the alert went out and 95 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: 1586 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: -25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

934 
WGUS51 KRNK 300050
FFWRNK
VAC035-063-121-141-155-750-300445-
/O.NEW.KRNK.FF.W.0035.160930T0050Z-160930T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
850 PM EDT THU SEP 29 2016

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN PATRICK COUNTY IN SOUTHWESTERN VIRGINIA...
  EASTERN PULASKI COUNTY IN SOUTHWESTERN VIRGINIA...
  WESTERN FLOYD COUNTY IN SOUTHWESTERN VIRGINIA...
  THE CITY OF RADFORD IN SOUTHWESTERN VIRGINIA...
  MONTGOMERY COUNTY IN SOUTHWESTERN VIRGINIA...
  EASTERN CARROLL COUNTY IN SOUTHWESTERN VIRGINIA...

* UNTIL 1245 AM EDT

* AT 845 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN BETWEEN HILLSVILLE AND BLACKSBURG VIRGINIA. FLASH
  FLOODING IS POSSIBLE WITHIN THIS AREA. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BLACKSBURG...
  CHRISTIANSBURG...
  RADFORD...
  HILLSVILLE...
  FANCY GAP
  AND ARARAT.

THIS INCLUDES THE FOLLOWING LOCATION VIRGINIA TECH.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU OBSERVE FLOODING...PLEASE SEND YOUR REPORTS OF FLOODING...
INCLUDING MUDSLIDES OR FLOODED ROADS...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 3657 8079 3722 8067 3725 8058 3727 8051
      3733 8041 3735 8034 3669 8033 3655 8044

$$

PM

2 follow-up statements

432 
WGUS71 KRNK 300316
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1116 PM EDT THU SEP 29 2016

VAC035-063-121-141-155-750-300445-
/O.CON.KRNK.FF.W.0035.000000T0000Z-160930T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PATRICK VA-PULASKI VA-FLOYD VA-CITY OF RADFORD VA-MONTGOMERY VA-
CARROLL VA-
1116 PM EDT THU SEP 29 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT FOR 
WESTERN PATRICK...EASTERN PULASKI...WESTERN FLOYD...MONTGOMERY AND
EASTERN CARROLL COUNTIES AND THE CITY OF RADFORD...

AT 1111 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN CONTINUING ACROSS
THE EASTERN PORTION OF THE WARNED AREA FROM BLACKSBURG TO MEADOWS OF
DAN...WHILE RAINFALL WAS DECREASING IN WESTERN PARTS OF THE WARNED
AREA. THREE OR MORE INCHES OF RAIN HAVE FALLEN NEAR BLACKSBURG...
SOUTHERN PULASKI COUNTY BETWEEN ALLISONIA AND COPPER VALLEY...NEAR
FANCY GAP...AND BETWEEN CANA AND ARARAT. FLASH FLOODING REMAINS
POSSIBLE IN THESE AREAS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BLACKSBURG...
CHRISTIANSBURG...
RADFORD...
HILLSVILLE...
AND DUBLIN.

THIS INCLUDES THE FOLLOWING LOCATION VIRGINIA TECH.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF FLOODING...
INCLUDING MUDSLIDES OR FLOODED ROADS...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 3657 8079 3722 8067 3725 8058 3727 8051
      3733 8041 3735 8034 3669 8033 3655 8044

$$

RAB

456 
WGUS71 KRNK 300420
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1220 AM EDT FRI SEP 30 2016

VAC035-063-121-141-155-750-300429-
/O.CAN.KRNK.FF.W.0035.000000T0000Z-160930T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PATRICK VA-PULASKI VA-FLOYD VA-CITY OF RADFORD VA-MONTGOMERY VA-
CARROLL VA-
1220 AM EDT FRI SEP 30 2016

...THE FLASH FLOOD WARNING FOR 
WESTERN PATRICK...EASTERN PULASKI...WESTERN FLOYD...MONTGOMERY AND
EASTERN CARROLL COUNTIES AND THE CITY OF RADFORD IS CANCELLED...

THE HEAVY RAIN HAS ENDED. PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF FLOODING...
INCLUDING MUDSLIDES OR FLOODED ROADS...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 3657 8079 3722 8067 3725 8058 3727 8051
      3733 8041 3735 8034 3669 8033 3655 8044

$$

RS

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 29, 8:02 PM EDT	Special Weather Statement	RNK	Bland, Grayson, Wythe, City of Galax	88 min
Sep 29, 8:21 PM EDT	Areal Flood Advisory	RNK	Carroll, Grayson, City of Galax	3 hr
Sep 29, 8:24 PM EDT	Special Weather Statement	RNK	Rockbridge, City of Lexington	51 min
Sep 29, 8:30 PM EDT	Areal Flood Advisory	RNK	Alleghany, Bath, Bedford, Botetourt, Rockbridge, City of Buena Vista and 2 more	4 hr
Sep 29, 8:30 PM EDT	Special Weather Statement	RNK	Carroll, Montgomery, City of Radford	60 min
Sep 29, 9:49 PM EDT	Areal Flood Advisory	RNK	Craig, Giles	3 hr
Sep 29, 11:54 PM EDT	Areal Flood Advisory	RNK	Grayson	6 hr
Sep 30, 12:01 AM EDT	Areal Flood Advisory	RNK	Alleghany, Bath, Bedford, Botetourt, City of Covington	6 hr
Sep 30, 12:50 AM EDT	Special Weather Statement	RNK	City of Galax	40 min
Sep 30, 4:01 AM EDT	Special Weather Statement	RNK	Grayson	29 min
Sep 30, 6:35 AM EDT	Special Weather Statement	RNK	Patrick	40 min
Sep 30, 6:58 AM EDT	Severe Thunderstorm Warning	RNK	Henry, Patrick	47 min
Sep 30, 7:39 AM EDT	Severe Thunderstorm Warning	RNK	Franklin, Henry, Patrick	66 min
Sep 30, 8:47 AM EDT	Severe Thunderstorm Warning	RNK	Bedford, Floyd, Franklin, Roanoke	43 min
Sep 30, 9:24 AM EDT	Areal Flood Advisory	RNK	Botetourt, Franklin, Roanoke, City of Roanoke, City of Salem	3 hr
Sep 30, 10:27 AM EDT	Special Weather Statement	RNK	Franklin	63 min
Sep 30, 11:48 AM EDT	Areal Flood Advisory	RNK	Bedford, Franklin, Henry, Pittsylvania, City of Martinsville	6 hr
Sep 30, 11:59 AM EDT	Flash Flood Watch	RNK	Alleghany, Amherst, Bath, Bedford, Botetourt, Rockbridge and 3 more	6 hr
Sep 30, 12:23 PM EDT	Areal Flood Advisory	RNK	Alleghany, Bath, Bedford, Botetourt, Craig, Franklin and 7 more	8 hr
Sep 30, 1:11 PM EDT	Special Weather Statement	RNK	City of Martinsville	64 min
Sep 30, 3:02 PM EDT	Special Weather Statement	RNK	City of Lynchburg	58 min
Sep 30, 3:32 PM EDT	Special Weather Statement	RNK	Halifax	58 min
Sep 30, 4:44 PM EDT	Special Weather Statement	RNK	Bedford	46 min
Sep 30, 5:34 PM EDT	Special Weather Statement	RNK	Charlotte	56 min
Sep 30, 5:51 PM EDT	Areal Flood Advisory	RNK	Bedford, Franklin, Pittsylvania	4 hr

Nearby

Flash Flood Warnings in Virginia, 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.