Alert archive / Virginia / Flash Flood Warnings in 2018

Flash Flood Warning 19, NWS Blacksburg, VA

May 19, 2018Franklin County, Henry County, Patrick County, Virginia

NWS Blacksburg, VA issued this flash flood warning at May 19, 2018, 9:08 PM EDT for Franklin County, Henry County, Patrick County, Virginia. It was in force for 6 hr. 5 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 19, 2018, 9:08 PM EDT (01:08 UTC)
Expired
May 20, 2018, 3:00 AM EDT
In force
6 hr
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon
Flood severity
None

Counties Franklin County, VA, Henry County, VA, Patrick County, VA

The radar

The Roanoke radar (KFCX), 38 km from the middle of the area, began a volume at 01:10 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 19, 11:00 PM EDTFLASH FLOOD4 Wsw Sydnorsville, VAONE FOOT STANDING WATER AT THE INTERSECTION OF RTE 220 AND FORK MOUNTAIN ROAD
May 19, 11:20 PM EDTFLASH FLOOD1 E Stuart, VASEVERAL FEET OF WATER ON COMMERCE STREET IN STUART
May 20, 12:30 AM EDTFLASH FLOOD4 Se Bassett, VAU.S. 220 FLOODED IN FOUR PLACES JUST SOUTH OF BASSETT FORKS WHERE REED CREEK CROSSES THE ROAD JUST BEFORE IT FLOWS INTO THE SMITH RIVER. ONE CAR SUBMERGED IN THE FLOOD WATERS AND LOCATED IN THE MEDIAN. PERSON WAS RESCUED FROM THEIR SUBMERGED VEHICLE WITHOUT IN
May 20, 12:30 AM EDTFLASH FLOOD4 Se Bassett, VAU.S. 220 FLOODED IN FOUR PLACES JUST SOUTH OF BASSETT FORKS WHERE REED CREEK CROSSES THE ROAD JUST BEFORE IT FLOWS INTO THE SMITH RIVER. ONE CAR SUBMERGED IN THE FLOOD WATERS AND LOCATED IN THE MEDIAN. PERSON WAS RESCUED FROM THEIR SUBMERGED VEHICLE WITHOUT IN
May 20, 12:30 AM EDTFLASH FLOOD4 Se Bassett, VAU.S. 220 FLOODED IN FOUR PLACES JUST SOUTH OF BASSETT FORKS WHERE REED CREEK CROSSES THE ROAD JUST BEFORE IT FLOWS INTO THE SMITH RIVER. ONE CAR SUBMERGED IN THE FLOOD WATERS AND LOCATED IN THE MEDIAN. PERSON WAS RESCUED FROM THEIR SUBMERGED VEHICLE WITHOUT IN

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 5 storm reports to this flash flood warning; the first came 112 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 1.1 hours before the alert went out and 36 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 00:00Z on 2018-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 127 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 00:00Z on 2018-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.1939587897Sfc1 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
127 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1075 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

055 
WGUS51 KRNK 200108
FFWRNK
VAC067-089-141-200700-
/O.NEW.KRNK.FF.W.0019.180520T0108Z-180520T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service BLACKSBURG VA
908 PM EDT SAT MAY 19 2018

The National Weather Service in BLACKSBURG has issued a

* Flash Flood Warning for...
  Western Henry County in south central Virginia...
  Franklin County in west central Virginia...
  Patrick County in southwestern Virginia...

* Until 300 AM EDT

* At 904 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. This heavy rain is falling on 
  soil that is already saturated from several inches of rain that 
  fell yesterday. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Rocky Mount...
  Stuart...
  Boones Mill...
  Ferrum...
  and Penhook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3656 8056 3722 7984 3723 7982 3721 7980
      3723 7980 3723 7978 3720 7978 3719 7976
      3719 7972 3715 7971 3715 7970 3716 7970
      3714 7967 3705 7959 3705 7960 3704 7959
      3694 7962 3654 8008 3654 8028

$$

MBS
4 follow-up statements
744 
WGUS71 KRNK 200251
FFSRNK

Flash Flood Statement
National Weather Service BLACKSBURG VA
1051 PM EDT SAT MAY 19 2018

VAC067-089-141-200700-
/O.CON.KRNK.FF.W.0019.000000T0000Z-180520T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Henry VA-Franklin VA-Patrick VA-
1051 PM EDT SAT MAY 19 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM EDT FOR 
WESTERN HENRY...FRANKLIN AND PATRICK COUNTIES...

At 1045 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Up to two inches of rain have already 
fallen. Ponding of water has been reported by VDOT on Route 912 near 
Stuart. Flash flooding is expected to begin shortly.

Some locations that will experience flooding include...
Rocky Mount...
Stuart...
Boones Mill...
Ferrum...
and Penhook.

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 3656 8056 3722 7984 3723 7982 3721 7980
      3723 7980 3723 7978 3720 7978 3719 7976
      3719 7972 3715 7971 3715 7970 3716 7970
      3714 7967 3705 7959 3705 7960 3704 7959
      3694 7962 3654 8008 3654 8028

$$

KK
344 
WGUS71 KRNK 200516
FFSRNK

Flash Flood Statement
National Weather Service BLACKSBURG VA
116 AM EDT SUN MAY 20 2018

VAC067-089-141-200700-
/O.CON.KRNK.FF.W.0019.000000T0000Z-180520T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Henry VA-Franklin VA-Patrick VA-
116 AM EDT SUN MAY 20 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM EDT FOR 
WESTERN HENRY...FRANKLIN AND PATRICK COUNTIES...

At 106 AM EDT, Significant flash flooding has been observed across 
especially northern Henry county during the past hour. Portions of 
U.S. 220 in the northern part of the county are flooded. At least 
three cars have been submerged in the Bassett Forks by flood waters.

Excessive rainfall across the warned area has resulted in several 
mud slides. Mud slides can consist of rock, mud, vegetation and 
other loose materials.

Some locations that will experience flooding include...
Rocky Mount...
Stuart...
Boones Mill...
Ferrum...
and Penhook.

In addition, several creeks and streams are out of their banks and 
flooding across the county. Blackberry Creek is in flood and is over 
three feet above its flood stage of 6 feet.

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 3656 8056 3722 7984 3723 7982 3721 7980
      3723 7980 3723 7978 3720 7978 3719 7976
      3719 7972 3715 7971 3715 7970 3716 7970
      3714 7967 3705 7959 3705 7960 3704 7959
      3694 7962 3654 8008 3654 8028

$$

RAB
729 
WGUS71 KRNK 200542
FFSRNK

Flash Flood Statement
National Weather Service BLACKSBURG VA
142 AM EDT SUN MAY 20 2018

VAC067-089-141-200700-
/O.CON.KRNK.FF.W.0019.000000T0000Z-180520T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Henry VA-Franklin VA-Patrick VA-
142 AM EDT SUN MAY 20 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM EDT FOR 
WESTERN HENRY...FRANKLIN AND PATRICK COUNTIES...

At 134 AM EDT, emergency management reported flash flooding in along 
U.S. 220 in the Bassett Forks area. In addition, the Blackberry 
Creek is nearly three feet above flood stage. At least three cars 
have been submerged by flood waters in the Bassett Fork area, 
including on on U.S. 220 just south of the Franklin County line. 
Flash flooding is already occurring.

Excessive rainfall over the warned area has caused mud slides near 
steep terrain. The mud slide can consist of rock, mud, vegetation 
and other loose materials.

Some locations that will experience flooding include...
Rocky Mount...
Stuart...
Boones Mill...
Ferrum...
and Penhook.

Flood waters are moving down Blackberry Creek at the Blackberry 
Creek Bridge near Bassett and just west of U.S. 220. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

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 3656 8056 3722 7984 3723 7982 3721 7980
      3723 7980 3723 7978 3720 7978 3719 7976
      3719 7972 3715 7971 3715 7970 3716 7970
      3714 7967 3705 7959 3705 7960 3704 7959
      3694 7962 3654 8008 3654 8028

$$

RAB
630 
WGUS71 KRNK 200700
FFSRNK

Flash Flood Statement
National Weather Service BLACKSBURG VA
300 AM EDT SUN MAY 20 2018

VAC067-089-141-200708-
/O.EXP.KRNK.FF.W.0019.000000T0000Z-180520T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Henry VA-Franklin VA-Patrick VA-
300 AM EDT SUN MAY 20 2018

...THE FLASH FLOOD WARNING FOR WESTERN HENRY...FRANKLIN AND PATRICK 
COUNTIES WILL EXPIRE AT 300 AM EDT...

The heavy rain has ended. However, excessive rainfall fell through 
much of Franklin and the northern part of Henry County leaving some 
roads, including U.S. 220 flooded. Several vehicles became stranded 
in high water, including one on U.S. 220, around or since midnight. 
Thus, while the Flash Flood threat has diminished as rainfall has 
moved out of the area, general flooding and flooding of some creeks 
and streams, including Reed Creek near Bassett, is expected to 
continue for a while longer. As a result, the Flash Flood Warning is 
being replaced with a Flood Warning for Franklin and Henry counties.

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 3656 8056 3722 7984 3723 7982 3721 7980
      3723 7980 3723 7978 3720 7978 3719 7976
      3719 7972 3715 7971 3715 7970 3716 7970
      3714 7967 3705 7959 3705 7960 3704 7959
      3694 7962 3654 8008 3654 8028

$$

RAB

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Blacksburg, VA wrote its last area forecast discussion before this flash flood warning went out at May 19, 7:58 PM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, May 19, 7:58 PM EDT, 1 hour 10 minutes before
Area Forecast Discussion
National Weather Service Blacksburg VA
758 PM EDT Sat May 19 2018

.SYNOPSIS...
A frontal boundary across the region will slowly lift north as a
warm front today. Several waves of low pressure will ride north
along the front acting to enhance showers and thunderstorms. Warm
and humid conditions will continue this weekend.

&&

.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
As of 945 AM EDT Saturday...

A flood warning has been issued for the Roanoke River at
Brookneal, and the flood warning for the Dan River at South
Boston has been upgraded to moderate flood stage.

Trimmed back PoPs to better match what is currently on the
radar. Further, adjusted sky to better match the clearing
over/near the Mountain Empire seen on satellite. Also adjusted
temps to match current observations, but forecast highs still
appear to be on track.

.NEAR TERM /THROUGH SUNDAY/...
As of 315 PM EDT Saturday...

Flash flood watch in the east will continue through midnight.

A frontal boundary will continue to lift north of the region this
afternoon. For eastern portions of the forecast area, a main axis of
gulf moisture is bringing ongoing isolated showers and plenty of
clouds. Low pressure to the west will shift the flow more to the
southwest allowing for moisture to continue to entrain into the
region. This combined with a shortwave passing is the impetus
for the showers and thunderstorms currently moving through the
region which will continue into the nightime hours. Considering
the ambient conditions from the copious amounts of rain we have
seen lately, main concerns with any thunderstorm would come with
any quick downpours or potentially any training which may
quickly lead to flooding issues.

During the pre-dawn hours, far removed from any diurnal support,
most of the remaining showers will fizzle out. GFS guidance even
suggests some scattering out of the cloud deck at this time and many
locations getting some sunshine Sunday morning. This is evident of
some weak high pressure building into the region as the main axis of
gulf moisture continues toward the coast. This will set the stage
for very warm and humid conditions leading toward chances for
diurnally driven showers and thunderstorms during the afternoon. As
would normally be the case in these summerlike conditions, without
any larger scale forcing, these showers and thunderstorms will be
more likely in the mountains, with some possibly forming over the
Blue Ridge and drifting east over the lower elevations.

&&

.SHORT TERM /6 AM SUNDAY MORNING THROUGH MONDAY NIGHT/...
As of 315 AM EDT Saturday...

Though important mesoscale details remain rather elusive in the
period, which limits forecaster confidence on specific details to no
better than moderate, large-scale regime favors a continuation of
the wet weather pattern we've been stuck in of late. It's unclear
we'll see the high rain rates as over the last couple days. Given
the state of the soil moisture conditions, rivers, and south-to-
north rain training on the eastern end of another subtropical low
coming out of the eastern Gulf suggest that a renewed flood threat
may again be a focal point in this period, at least in a localized
sense.

Overall synoptic regime will remain generally little changed, as a
continued influx of subtropical moisture looks to resume again as
another upper low moves up from the eastern Gulf. Meanwhile early in
the short-term period (Sunday night into Monday), the westerlies
which have been largely to our north will begin to buckle somewhat
more to the south into the mountains of eastern WV into the
northern/central Blue Ridge, with ill-defined/subtle mid-level vort
maxes in this mid-level westerly regime serving as foci for
additional showers and thunderstorms.

Sunday night and early Monday, there's some indication in the 12z
guidance of a weakened convective complex as the stronger westerlies
build south. Storms may again fire on remnant outflow from this
overnight activity on Monday afternoon. Shear isn't particularly
strong suggesting disorganized pulse multicells are most probable if
convection develops, but there is enough progged modest to moderate
instability amid filtered sun to partly cloudy skies to offer a
window of isolated to scattered strong storms north of Route 460.
SPC does show a Marginal Risk/5% severe probability for this general
area Monday. Any threat likely wanes with the diurnal cycle. Monday
night through Tuesday night look to feature continued chances for
showers and embedded thunder, with SREF showing PWATs of 1.25-1.5"
advecting north/north-northeast against the Blue Ridge. Convective
parameters are lower for Tuesday given abundant cloud cover, PoPs
are toward the lower Likely range. From Sunday night through
Tuesday, shown areal-average rain amounts between a half to an inch
of rain, with localized potential for more in more persistent
downpours that may unfold.

Given partly to mostly cloudy skies governing much of the period,
kept temperatures on the lower end of the guidance envelope on the
highs, and milder side of guidance for the lows. Generally highs mid
70s to mid 80s and lows in the 60s, with a continued somewhat humid
feel (dewpoints in the 60s).

&&

.LONG TERM /TUESDAY THROUGH SATURDAY/...
As of 315 AM EDT Saturday...

Global models point to Wednesday and Thursday as days with a
relative minimum in rain chances, as a high pressure area over New
England wedges down the Appalachians. This will likely shunt the
subtropical plume of moisture further to the south and allow for a
couple of somewhat drier days. Temperatures begin to trend somewhat
more seasonal for the midweek period.

An early look at Friday and the Memorial Day weekend looks unsettled
with a potential return the chances for rain showers and
thunderstorms back into our area. This is indicated by most global
models as a cold front slowly sags south from the Great Lakes/mid-
Mississippi Valley, with another potential surge of moisture of
subtropical origin returns from the south.

&&

.AVIATION /00Z SUNDAY THROUGH THURSDAY/...
As of 755 PM EDT Saturday...

Visible satellite pictures showed stratus banked up against the
east side of the Blue Ridge late this afternoon. KROA was just
on the edge of the low cloud and will oscillate between IFR and
VFR through midnight. West of the mountains outside of the
showers and thunderstorms ceilings were VFR.

Two main bands of showers and isolated thunderstorms were
tracking northeast across Kentucky, West Virginia, and Virginia
this evening. Showers and thunderstorms were more isolates east
of the Blue Ridge but a thunderstorm was just upstream of KLYH.

Medium confidence of any improvement in the ceilings east of the
mountains overnight and low confidence with the formation of any
fog. The temperature at KBLF dropped down to the dew point as
the first storm went through so at this point that is the most
likely airport to get MVFR or lower visibility due to fog.

As weak high pressure builds over the Mid Atlantic region on
Sunday, moisture will decrease. Southwest Virginia, northwest
North Carolina and southeast West Virginia will become VFR by
late morning, with medium confidence in this timing.

.Extended Aviation Discussion...

Diurnally driven isolated showers and thunderstorms will develop
Sunday afternoon.

Another weak cold front will bring increasing coverage of
showers and thunderstorms again on Monday. Scattered MVFR
showers and thunderstorms are possible Monday night into Tuesday
with another round likely Wednesday. Conditions are expected to
improve later in the week.

&&

.HYDROLOGY...
Update as of 1000 AM EDT Saturday...

A flood warning has been issued for the Roanoke River at
Brookneal, and the flood warning for the Dan River at South
Boston has been upgraded to moderate flood stage.

Previous discussion...

A Flash Flood Watch is in effect portions of forecast area
until Midnight for the potential for heavy rains.

The Flood Warning continues for the following rivers in North
Carolina and Virginia...

Dan River near Danville
Dan River at Paces affecting Halifax County
Dan River at South Boston affecting Halifax County

The Flood Warning continues for the following rivers in
Virginia.. Roanoke (Staunton) River at Randolph affecting
Charlotte and Halifax Counties

Several days of heavy rainfall with amounts ranging from
2 to as much as 6 inches across parts of the Roanoke and Dan
River basins will cause flooding along the river in parts of
Rockingham, Pittsylvania, the City of Danville and downstream
in Halifax County.

Flash Flooding is a main concern until Midnight, as well as
flooding on small creeks, streams, and smaller rivers as a
result of bands of tropical rain showers and thunderstorms that
are expected across the area. Added heavy rain will likely cause
more flooding especially along and east of the Blue Ridge this
afternoon into this evening as bands tend to train across the
region. These bands will be very efficient rainfall producers
with rates of 2 inches or more per hour possible. This could
result in another 1 to 3 inches of rain in spots. Given such wet
antecedent conditions, it wont take much additional rain to
cause at least minor flooding.

&&

.RNK WATCHES/WARNINGS/ADVISORIES...
VA...Flash Flood Watch until midnight EDT tonight for VAZ022>024-
     032>035-043>047-058-059.
NC...Flash Flood Watch until midnight EDT tonight for NCZ003>006-
     019-020.
WV...None.

&&

SYNOPSIS...JR
NEAR TERM...JR
SHORT TERM...AL
LONG TERM...AL
AVIATION...AMS/JR
HYDROLOGY...JH/KK
Hazardous weather outlook, May 19, 2:52 PM EDT, 6 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service Blacksburg VA
252 PM EDT Sat May 19 2018

NCZ003>006-019-020-VAZ022>024-032>035-043>047-058-059-201900-
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Roanoke-Botetourt-
Rockbridge-Patrick-Franklin-Bedford-Amherst-Henry-Pittsylvania-
Campbell-Appomattox-Buckingham-Halifax-Charlotte-
252 PM EDT Sat May 19 2018

...FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina, central Virginia, south central Virginia,
southwest Virginia and west central Virginia.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001-002-018-VAZ007-009>020-WVZ042>044-507-508-201900-
Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-
Montgomery-Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Mercer-
Summers-Monroe-Eastern Greenbrier-Western Greenbrier-
252 PM EDT Sat May 19 2018

This Hazardous Weather Outlook is for northwest North Carolina,
southwest Virginia, west central Virginia and southeast West
Virginia.

.DAY ONE...This afternoon and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, May 19, 7:47 PM EDT, 1 hour 21 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
747 PM EDT SAT MAY 19 2018

VAZ019-WVZ044-507-508-200030-
Alleghany-Western Greenbrier-Eastern Greenbrier-Monroe-
747 PM EDT SAT MAY 19 2018

...strong THUNDERSTORMS WILL AFFECT NORTHWESTERN ALLEGHANY COUNTY IN
WEST CENTRAL VIRGINIA...CENTRAL GREENBRIER AND NORTHEASTERN MONROE
COUNTIES IN SOUTHEASTERN WEST VIRGINIA...

Until 830 PM EDT

At 745 PM EDT, radar indicated strong thunderstorms extended from
near Leonard through Maxwelton to Organ Cave. Movement was northeast
at 20 mph.

Wind gusts up to 40 mph and very heavy rainfall are possible.

Locations impacted include...
Alleghany...
Covington...
Lewisburg...
White Sulphur Springs...
and Ronceverte.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3822 8036 3811 8036 3805 8026 3804 8016
      3806 8011 3806 7997 3800 8000 3795 8005
      3794 8003 3796 8000 3795 7998 3772 8001
      3760 8049 3785 8054 3823 8037
TIME...MOT...LOC 2345Z 241DEG 18KT 3820 8034 3789 8046 3771 8043

MBS
Special weather statement, May 19, 7:49 PM EDT, 1 hour 19 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
749 PM EDT SAT MAY 19 2018

VAZ011-013-014-200030-
Giles-Pulaski-Montgomery-
749 PM EDT SAT MAY 19 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN PULASKI...GILES AND
NORTHWESTERN MONTGOMERY COUNTIES...

Until 830 PM EDT

At 748 PM EDT, a strong thunderstorm was located near White Gate,
moving northeast at 25 mph.

Winds up to 40 mph and very heavy rain are possible with this storm.

Locations impacted include...
Blacksburg...
Pearisburg...
Pembroke...
Newport...
and Mountain Lake.

This includes The following Location Virginia Tech.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3745 8054 3721 8038 3708 8091 3710 8093
      3711 8093 3712 8089 3715 8086 3717 8088
      3718 8086 3719 8087 3718 8089 3721 8093
TIME...MOT...LOC 2348Z 241DEG 22KT 3716 8088

MBS
Special weather statement, May 19, 7:57 PM EDT, 1 hour 11 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
757 PM EDT SAT MAY 19 2018

VAZ007-009-200100-
Tazewell-Smyth-
757 PM EDT SAT MAY 19 2018

...STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN SMYTH AND TAZEWELL
COUNTIES...

Until 900 PM EDT

At 756 PM EDT, radar indicated strong thunderstorms extending from
near R.d. Bailey Lake to near Lebanon. Movement was east at 30 mph.

Winds of 30 mph to 40 mph and very heavy rain are possible with
these storms.

Locations impacted include...
Richlands...
Tazewell...
Saltville...
Cedar Bluff...
and Raven.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3715 8190 3720 8176 3724 8174 3720 8168
      3721 8156 3724 8151 3726 8150 3725 8148
      3727 8145 3727 8142 3731 8140 3734 8136
      3690 8149 3684 8175 3693 8183 3695 8182
      3696 8178 3705 8182 3711 8189
TIME...MOT...LOC 2356Z 248DEG 25KT 3765 8186 3684 8209

MBS
Special weather statement, May 19, 8:35 PM EDT, 33 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
835 PM EDT SAT MAY 19 2018

VAZ007-009-010-WVZ042-200115-
Tazewell-Bland-Smyth-Mercer-
835 PM EDT SAT MAY 19 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SMYTH...
TAZEWELL...WESTERN BLAND AND WESTERN MERCER COUNTIES...

Until 915 PM EDT

At 833 PM EDT, radar indicated strong thunderstorms extending from
near Bald Knob through Welch and Cedar Bluff to near Quarry.
Movement was east at 25 mph.

Winds up to 40 mph and very heavy rain are expected.

Locations impacted include...
Bluefield...
Marion...
Richlands...
Tazewell...
and Saltville.

This includes the Mercer County Airport.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3696 8178 3704 8182 3720 8177 3724 8174
      3720 8168 3721 8156 3727 8142 3742 8131
      3742 8128 3746 8131 3751 8121 3757 8120
      3759 8110 3704 8124 3696 8138 3685 8130
      3675 8133 3673 8142 3674 8168 3693 8183
TIME...MOT...LOC 0033Z 266DEG 22KT 3780 8157 3749 8163 3710 8173 3684
8181

MBS
Special weather statement, May 19, 8:42 PM EDT, 26 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
842 PM EDT SAT MAY 19 2018

VAZ019-020-200145-
Bath-Alleghany-
842 PM EDT SAT MAY 19 2018

...STRONG THUNDERSTORMS WILL AFFECT CENTRAL ALLEGHANY AND BATH
COUNTIES IN WEST CENTRAL VIRGINIA AND THE CITY OF COVINGTON...

Until 945 PM EDT

At 841 PM EDT, radar indicated strong thunderstorms extending from
Mountain Grove to Natural Well to near Covington. Movement was
northeast at 35 mph.

Winds in excess of 30 mph and very heavy rain are possible with
these storms.

Locations impacted include...
Covington...
Clifton Forge...
Warm Springs...
Millboro...
and Hot Springs.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3822 7971 3820 7956 3818 7951 3815 7953
      3817 7949 3816 7944 3810 7949 3809 7948
      3804 7952 3803 7951 3791 7963 3788 7965
      3787 7963 3778 7968 3781 7979 3767 8009
      3785 8004 3810 7993 3815 7992 3825 7976
TIME...MOT...LOC 0041Z 232DEG 30KT 3809 7988 3790 7997 3773 8005

MBS
Local storm report, May 19, 9:08 PM EDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
908 PM EDT SAT MAY 19 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1245 AM     FLASH FLOOD      4 ENE BEECH MOUNTAIN    36.24N 81.82W
05/19/2018                   WATAUGA            NC   OFFICIAL NWS OBS

            THE WATAUGA RIVER NEAR SUGAR GROVE CRESTED ABOVE MAJOR
            FLOOD STAGE AT 16.15 FEET ACCORDING TO A STREAM GAUGE AT
            THIS TIME. THE RIVER RAPIDLY ROSE OVER 9.5 FEET IN SIX
            HOURS.

&&

PW

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 8:27 PM EDTFlash Flood WarningRNKBedford6 hr
May 19, 8:35 PM EDTSpecial Weather StatementRNKSmyth, Tazewell40 min
May 19, 8:38 PM EDTAreal Flood AdvisoryRNKFranklin, Henry, Patrick33 min
May 19, 8:42 PM EDTSpecial Weather StatementRNKAlleghany, Bath, City of Covington63 min
May 19, 8:53 PM EDTAreal Flood AdvisoryRNKBland, Grayson, Smyth, Tazewell, Wythe6 hr
May 19, 9:16 PM EDTAreal Flood AdvisoryRNKCraig5 hr
May 19, 9:19 PM EDTSpecial Weather StatementRNKSmyth41 min
May 19, 9:53 PM EDTAreal Flood AdvisoryRNKBotetourt, Rockbridge4 hr
May 19, 10:46 PM EDTSpecial Weather StatementRNKHenry, City of Martinsville89 min
May 19, 11:46 PM EDTSpecial Weather StatementRNKPittsylvania, City of Martinsville74 min
May 20, 3:07 AM EDTAreal Flood WarningRNKFranklin, Henry5 hr
May 20, 8:01 AM EDTAreal Flood WarningRNKHenry, City of Martinsville119 min
May 20, 2:59 PM EDTSpecial Weather StatementRNKHenry46 min
May 20, 3:47 PM EDTSpecial Weather StatementRNKHenry43 min
May 20, 5:31 PM EDTFlash Flood WarningRNKPatrick4 hr
May 20, 6:35 PM EDTSpecial Weather StatementRNKAlleghany, Bath, Rockbridge, City of Buena Vista, City of Covington, City of Lexington55 min
May 20, 6:45 PM EDTSpecial Weather StatementRNKBuckingham60 min
May 20, 7:06 PM EDTSevere Thunderstorm WarningRNKBuckingham54 min
May 20, 7:16 PM EDTAreal Flood WarningRNKCarroll, Patrick106 min
May 20, 7:59 PM EDTSpecial Weather StatementRNKBuckingham61 min

Nearby

Flash Flood Warnings in Virginia, 2018Every flash flood warning in 2018

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.