Flash Flood Warning 76, NWS Blacksburg, VA

011 
WGUS71 KRNK 300228
FFSRNK

Flash Flood Statement
National Weather Service Blacksburg VA
1028 PM EDT Sun Sep 29 2024

VAC083-143-590-300238-
/O.CAN.KRNK.FF.W.0076.000000T0000Z-240930T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Halifax VA-Pittsylvania VA-City of Danville VA-
1028 PM EDT Sun Sep 29 2024

...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL HALIFAX AND 
EASTERN PITTSYLVANIA COUNTIES AND THE EASTERN CITY OF DANVILLE...

Flood waters have receded. The heavy rain has ended. Please continue 
to heed remaining road closures.

&&

LAT...LON 3704 7938 3705 7938 3706 7922 3662 7912
      3656 7939 3679 7939

$$

SH

Area Forecast Discussion
National Weather Service Blacksburg VA
649 PM EDT Sun Sep 29 2024

.SYNOPSIS...
A large, slow moving low pressure system will move east across
the Mid Atlantic region tonight through Tuesday with periods
of showers, isolated thunderstorms and the potential for heavy
rainfall. On Wednesday, a cold front will cross through the
eastern United States, leading in high pressure and dry weather
for Thursday and Thursday and Friday.

&&

.NEAR TERM /THROUGH MONDAY/...
As of 620 PM EDT Sunday...

Key Messages:

 - Periods of light to moderate rain expected tonight
 - Flooding possible where we have received multiple days of
   precipitation.

Tropical-like bands of rain continue to move counter-clockwise
around the upper low centered to our west. A warm front was
analyzed near the VA/NC border. This front increased the
streamwise vorticity available for rotation, as did surface
winds from the ESE. We saw some breaks in the cloud cover over
parts of NC and VA, and these factors were enough to trigger
several low-topped rotating storms early this afternoon
requiring tornado warnings. We did receive reports of funnel
clouds, but have not heard of anything reaching the ground at
this time.

Otherwise, we have transitioned to more of a flooding concern,
with showers training over the same areas which have high soil
moisture and are still saturated from Helene. A Flood Watch
remains in effect through early Monday morning for the southern
Shenandoah Valley and towards Roanoke.

Expect a continuation of damp, dank weather overnight and into
Monday.

As of 345 PM EDT Sunday...

Key Messages:

 - Flood Watch remain in effect for the Virginia foothills and
   piedmont

Scattered showers had developed across southwest Virginia, northwest
North Carolina. The environment was still slowly becoming more
unstable. MSAS analyses at 18Z/2PM had the lowest Lifted Index
values and highest CAPES(around 600 J/kg) in the North Carolina
piedmont. The threat of thunderstorms will continue into the
evening and again on Monday afternoon. Clouds and precipitation
will limit heating Monday but temperatures start out mild, with
lows 10 to 15 degrees above normal, so highs will still be in
the 60s and 70s.

&&

.SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY NIGHT/...
As of 245 PM EDT Sunday...

Key Messages:

1). Upper Low and Remnants of Helene Slowly Drift East Through
the Region.

2). Rain continues Tuesday, but drier conditions slowly return
for Wednesday and Thursday.

A vertically stacked upper low and surface low, remnants of
former Hurricane Helene, will slowly drift from the TN Valley
toward the Mid-Atlantic region, all the while weakening and
filling. Gradually, a subtropical ridge will build into the
region both from the east and west and will be in place by
Thursday with 588dm heights poking northward into the Mid-
Atlantic region.

After a rainy Monday night and at least part of Tuesday, the
rain will diminish and eventually move out of the area from
south to north. Rain will be confined mainly to areas north of
I-64 by Tuesday afternoon and end across most if not all of the
forecast area by Wednesday morning. Then, the remainder of the
period should be dry throughout the CWA with decreased cloud
cover and increased sunshine as well. Any rain during this time
frame should be light enough that it will not exacerbate the
ongoing flooding or recovery efforts but be more of a nuisance
than anything else.

Little change in temperature is expected through the period. In
fact, look for a slight increase in temperature through the
period, especially daytime, with greater insolation by Thursday
and heights/temperatures aloft increasing to well above normal
levels for the first of October. High temperatures will range
from the 70s west to the lower 80s east with low temperatures
only in the upper 50s to mid 60s for the most part, averaging a
good 10-15 degrees above normal through the period. Dewpoints in
the 60s, at least through the first half of the week, are also
abnormally high for the first of October.

/Confidence Levels in Forecast Parameters/
- Moderate to High Confidence in Temperatures,
- Moderate Confidence in Precipitation Probabilities,
- Moderate Confidence in Wind Direction and Speed.

&&

.LONG TERM /THURSDAY THROUGH SUNDAY/...
As of 250 PM EDT Sunday...

Key Messages:

1). Mainly dry weather conditions expected through this period.

2). Cooler nights, but continued mild to warm afternoons.

3). Continuing to watch the Gulf of Mexico closely by the
weekend into early next week for possible tropical development.

The extended period becomes more problematic as an area of
disturbed weather once again developing across the central Gulf
of Mexico. This will become more of a concern late in the
weekend into early next week.

Friday looks dry with a broad subtropical ridge dominating the
mid-latitudes of the U.S. from west to east across much of the
U.S. Stronger westerlies are evident to the north along the
Canadian border with the aforementioned disturbance noted in the
Gulf. By Saturday, for now at least, it appears the westerlies
will dig far enough south to push a weak frontal boundary
through the Mid-Atlantic region on Saturday. Limited moisture
and dynamics appear available, but scattered showers may
accompany the front, especially along/north of I-64.

Beyond Saturday, many questions remain and will be largely
dependent on tropical developments. For now, am only indicating
a slight chance of showers. Confidence in the forecast beyond
Friday is quite low.

Little change expected in temperatures through the period.

/Confidence Levels in Forecast Parameters/
- Moderate to High Confidence in Temperatures,
- Low Confidence in Precipitation Probabilities,
- Low Confidence in Wind Direction and Speed.

&&

.AVIATION /00Z MONDAY THROUGH FRIDAY/...
As of 640 PM EDT Sunday...

An upper low and what remains of Helene were centered just west
of the region. Easterly winds were providing moisture for
scattered showers this evening. Periods of -RA/RA will continue
overnight and through Monday. Ceilings/some visibilities range
from MVFR to IFR at the local terminals, and will lower to below
1 kft for all terminals. Little improvement expected tomorrow
with the upper low in the vicinity and periods of -RA/RA.
Hopefully by Monday afternoon sites will have improved to MVFR,
but this will be harder in the mountains.

Winds through the period will be light and mainly out of the
east to southeast.

Confidence high for the aviation forecast.

Due to a power outage, no data is coming from the BLF ASOS.
AMD NOT SKED has been added to that TAF.

EXTENDED AVIATION OUTLOOK...

Scattered showers remain in the forecast through Tuesday which
may result in MVFR ceilings and visibilities.

Flight conditions should improve Wednesday and Thursday as a
cold front crosses the area.

&&

.EQUIPMENT...
As of 1120 AM EDT Sunday...

A power outage has resulted in missing data from the Bluefield
ASOS (KBLF).

The NOAA All-Hazards radio at Richlands is off the air due to
a power outage.

The Hillsville VA (HLX) AWOS is currently out of service with no
estimated time to restored service.

The river gauge on the Watauga River at Sugar Grove will remain
out of service until further notice.

&&

.RNK WATCHES/WARNINGS/ADVISORIES...
VA...Flood Watch until 6 AM EDT Monday for VAZ018>020-022>024-034-
     035.
NC...None.
WV...None.

&&

SYNOPSIS...AMS/WP
NEAR TERM...AMS/SH/WP
SHORT TERM...RAB
LONG TERM...RAB
AVIATION...SH/WP
EQUIPMENT...AMS/WP

Hazardous Weather Outlook
National Weather Service Blacksburg VA
1155 AM EDT Sun Sep 29 2024

VAZ018>020-022>024-034-035-301600-
Craig-Alleghany VA-Bath-Roanoke-Botetourt-Rockbridge-Bedford-Amherst-
1155 AM EDT Sun Sep 29 2024

...FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH LATE
TONIGHT...

This Hazardous Weather Outlook is for 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.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001>006-018>020-VAZ007-009-015-044-058-059-301600-
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Tazewell-Smyth-Grayson-Pittsylvania-Halifax-Charlotte-
1155 AM EDT Sun Sep 29 2024

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

.DAY ONE...This afternoon and tonight.

Scattered showers are expected today into tonight. Although rainfall
amounts are expected to remain light, isolated excessive runoff is
possible for areas that received heavy rainfall and flooding from
Helene.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

VAZ010>014-016-017-032-033-043-045>047-WVZ042>044-507-508-301600-
Bland-Giles-Wythe-Pulaski-Montgomery-Carroll-Floyd-Patrick-Franklin-
Henry-Campbell-Appomattox-Buckingham-Mercer-Summers-Monroe-
Eastern Greenbrier-Western Greenbrier-
1155 AM EDT Sun Sep 29 2024

This Hazardous Weather Outlook is for central Virginia, south
central Virginia, southwest Virginia, west central Virginia and
southeast West Virginia.

.DAY ONE...This afternoon and tonight.

Showers and isolated thunderstorms may result in areas of locally
heavy rainfall this afternoon and tonight. Localized flash flooding
concerns are possible.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Showers and isolated thunderstorms may result in areas of locally
heavy rainfall this afternoon and tonight. Localized flash flooding
concerns are possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Special Weather Statement
National Weather Service BLACKSBURG VA
410 PM EDT Sun Sep 29 2024

VAZ058-292100-
Halifax VA-
410 PM EDT Sun Sep 29 2024

...A STRONG THUNDERSTORM WILL IMPACT
NORTHWESTERN HALIFAX COUNTY THROUGH 500 PM EDT...

At 409 PM EDT, Doppler radar was tracking a strong thunderstorm near
Ingram, moving north at 10 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Ingram...
and Leda.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3672 7909 3674 7916 3697 7910 3681 7886
TIME...MOT...LOC 2009Z 201DEG 8KT 3677 7909

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

SH

Special Weather Statement
National Weather Service BLACKSBURG VA
647 PM EDT Sun Sep 29 2024

VAZ044-292315-
Pittsylvania VA-
647 PM EDT Sun Sep 29 2024

...STRONG THUNDERSTORMS WILL IMPACT CENTRAL PITTSYLVANIA COUNTY AND
THE CITY OF DANVILLE THROUGH 715 PM EDT...

At 647 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms along a line extending from near Pittsville to Westover
Hills. Movement was northeast at 15 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Danville...
Chatham...
Gretna...
Blairs...
Callands...
Dry Fork...
and Ringgold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3697 7960 3701 7949 3701 7947 3703 7945
      3707 7934 3661 7923 3654 7956
TIME...MOT...LOC 2247Z 217DEG 14KT 3696 7950 3663 7945

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

AS

Special Weather Statement
National Weather Service BLACKSBURG VA
720 PM EDT Sun Sep 29 2024

VAZ044-292345-
Pittsylvania VA-
720 PM EDT Sun Sep 29 2024

...STRONG THUNDERSTORMS WILL IMPACT CENTRAL PITTSYLVANIA COUNTY AND
THE EASTERN CITY OF DANVILLE THROUGH 745 PM EDT...

At 720 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms along a line extending from near Gretna to near
Ringgold. Movement was north at 20 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Danville...
Hurt...
Chatham...
Gretna...
Blairs...
Java...
and Dry Fork.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3699 7948 3711 7926 3665 7919 3664 7920
      3654 7937 3654 7939
TIME...MOT...LOC 2320Z 193DEG 19KT 3702 7935 3660 7935

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

AS