Alert archive / Virginia / Flash Flood Warnings in 2017

Flash Flood Warning 5, NWS Blacksburg, VA

May 18, 2017Carroll County, Virginia

NWS Blacksburg, VA issued this flash flood warning at May 18, 2017, 6:25 PM EDT for Carroll County, Virginia. It was in force for 2 hr. 4 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
May 18, 2017, 6:25 PM EDT (22:25 UTC)
Expired
May 18, 2017, 8:30 PM EDT
In force
2 hr
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon
Flood severity
None

County Carroll County, VA

The radar

The Roanoke radar (KFCX), 47 km from the middle of the area, began a volume at 22:25 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

TimeReportWhereRemark
May 18, 6:30 PM EDTFLASH FLOOD4 Ene Hillsville, VAHEAVY RAINFALL FROM TRAINING THUNDERSTORMS CAUSED A SMALL STREAM TO FLOW OVER PILGRIMS TRAIL DEPOSITING DEBRIS NEAR THE INTERSECTION OF US221 AND STATE ROUTE 673. FLOODING IS ONGOING AT THE TIME OF THIS REPORT.
May 18, 7:10 PM EDTFLASH FLOOD4 Ene Hillsville, VAHEAVY RAINFALL FROM NUMEROUS THUNDERSTORMS RESULTED IN MULTIPLE MUDSLIDES ALONG BUCK HORN ROAD. ADDITIONAL REPORTS OF ONGOING FLOODING ACROSS THE HILLSVILLE TO DUGSPUR AREAS HAVE BEEN CALLED INTO THE EMERGENCY SERVICES.
May 18, 7:30 PM EDTFLASH FLOOD1 Sw Dugspur, VATRAINING THUNDERSTORMS RESULTED IN FLASH FLOODING IN SEVERAL SPOTS ALONG US 221 OR FLOYD PIKE. NUMEROUS MUDSLIDES HAVE ALSO BEEN REPORTED, INCLUDING ONE NEAR THE 6000 BLOCK OF FLOYD PIKE. ADDITIONAL MUDSLIDES AND ROAD CLOSURES DUE TO CREEK FLOODING HAVE ALSO B
May 18, 7:30 PM EDTHEAVY RAIN 42 Sse Dugspur, VATRAINING THUNDERSTORMS DROPPED 4 INCHES OF RAINFALL IN A FEW HOUR PERIOD AT A PRIVATE RESIDENCE ALONG NESTER SCHOOL ROAD NEAR DUGSPUR.

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, 10.4 hours before the alert went out and 108 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, Greensboro/Hi Pt, NC at 12:00Z on 2017-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Greensboro/Hi Pt, NC at 12:00Z on 2017-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1297 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

239 
WGUS51 KRNK 182225
FFWRNK
VAC035-190030-
/O.NEW.KRNK.FF.W.0005.170518T2225Z-170519T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service BLACKSBURG VA
625 PM EDT THU MAY 18 2017

The National Weather Service in BLACKSBURG has issued a

* Flash Flood Warning for...
  Eastern Carroll County in southwestern Virginia...

* Until 830 PM EDT

* At 623 PM EDT, local law enforcement officials reported heavy rain 
  across the warned area causing flooding of roads and streams. Up 
  to three inches of rain have already fallen in this area. Flash 
  flooding is already occurring.

* Some locations that will experience flooding include...
  Hillsville...
  Dugspur...
  and Woodlawn.

Additional rainfall amounts of 1 to 2 inches during the next hour 
are possible in the warned area.

Flooding has been reported along Big Reed Island Creek near Dugspur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

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 3676 8085 3683 8083 3690 8061 3672 8048

$$

RAB
3 follow-up statements
719 
WGUS71 KRNK 182331
FFSRNK

Flash Flood Statement
National Weather Service BLACKSBURG VA
731 PM EDT THU MAY 18 2017

VAC035-190030-
/O.CON.KRNK.FF.W.0005.000000T0000Z-170519T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carroll VA-
731 PM EDT THU MAY 18 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR 
NORTHEASTERN CARROLL COUNTY...

At 720 PM EDT, the public reported flash flooding occurring in the 
Dugspur area with at least two roads flooded in the area. Big Reed 
Island Creek is out of its banks near Dugspur and another small 
creek was out of its banks near the intersection of U.S. 221 and VA 
673 causing the road to be flooded and closed.

While rainfall has decreased across the northern part of the county, 
rainfall along and south of a line from Dugspur to Hillsville 
continues.  Two to three inches of rain have already fallen in much 
of the warned area. The public and emergency management officials 
have reported flash flooding in the area.

Some locations that will experience flooding include...
Hillsville...
Dugspur...
and Woodlawn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

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 3676 8085 3683 8083 3690 8061 3672 8048

$$

RAB
369 
WGUS71 KRNK 182344
FFSRNK

Flash Flood Statement
National Weather Service BLACKSBURG VA
744 PM EDT THU MAY 18 2017

VAC035-190030-
/O.CON.KRNK.FF.W.0005.000000T0000Z-170519T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carroll VA-
744 PM EDT THU MAY 18 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR 
NORTHEASTERN CARROLL COUNTY...

At 741 PM EDT, local law enforcement and the public reported that 
flash flooding continued across mainly the eastern parts of Carroll 
County in the Dugsput area.  Several roads have been closed due to 
water flowing over the roads, creeks out of their banks, or 
mudslides.  This includes parts of U.S. 221, VA 673 or Pilgrims 
Trail.  Up to three inches of rain have already fallen across the 
central and eastern parts of the county. Flash flooding is already 
occurring in these areas. Further west, near Interstate 77, less 
rain fell and the threat of flash flooding has ended.

Some locations that will experience flooding include...
Hillsville...
and Dugspur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

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 3677 8079 3679 8082 3682 8081 3690 8061
      3672 8048

$$

RAB
394 
WGUS71 KRNK 190024
FFSRNK

Flash Flood Statement
National Weather Service BLACKSBURG VA
824 PM EDT THU MAY 18 2017

VAC035-190032-
/O.EXP.KRNK.FF.W.0005.000000T0000Z-170519T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carroll VA-
824 PM EDT THU MAY 18 2017

...THE FLASH FLOOD WARNING FOR NORTHEASTERN CARROLL COUNTY WILL 
EXPIRE AT 830 PM EDT...

Law enforcement officials report that flood waters have receded 
quickly allowing roads to be reopened and creeks to fall bank within 
their banks.  Rainfall has ended across the region and additional 
heavy rainfall is not expected tonight.  Thus, flooding is no longer 
expected to pose a threat at this time.

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 3677 8079 3679 8082 3682 8081 3690 8061
      3672 8048

$$

RAB

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 2:12 PM EDTSpecial Weather StatementRNKCarroll, Floyd63 min
May 18, 4:53 PM EDTSpecial Weather StatementRNKCarroll, City of Galax22 min
May 18, 5:06 PM EDTSevere Thunderstorm WarningRNKCarroll54 min
May 18, 5:41 PM EDTSpecial Weather StatementRNKCarroll64 min
May 18, 6:42 PM EDTSpecial Weather StatementRNKPatrick63 min
May 18, 6:52 PM EDTSevere Thunderstorm WarningRNKCarroll, Patrick53 min
May 18, 7:11 PM EDTSpecial Weather StatementRNKCity of Galax64 min

Nearby

Flash Flood Warnings in Virginia, 2017Every flash flood warning in 2017

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.