Alert archive / Virginia / Frost Advisories in 2018

Frost Advisory 2, NWS Blacksburg, VA

April 19, 20186 counties in North Carolina; 17 counties in Virginia

NWS Blacksburg, VA issued this frost advisory at Apr 19, 2018, 3:33 PM EDT for 6 counties in North Carolina; 17 counties in Virginia. It took effect at Apr 20, 2018, 2:00 AM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Apr 19, 2018, 3:33 PM EDT (19:33 UTC)
In effect from
Apr 20, 2018, 2:00 AM EDT
Expired
Apr 20, 2018, 9:00 AM EDT
In force
7 hr
Issued by
NWS Blacksburg, VA
All 23 counties

Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Wilkes County, NC, Yadkin County, NC, Appomattox County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Charlotte County, VA, City of Danville, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Roanoke, VA, City of Salem, VA, Franklin County, VA, Halifax County, VA, Henry County, VA, Patrick County, VA, Pittsylvania County, VA, Roanoke County, VA

The radar

The Roanoke radar (KFCX), 53 km from the middle of the area, began a volume at 19:34 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, 7.6 hours before the alert went out and 39 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 12:00Z on 2018-04-19Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2018-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.1939587897117Sfc1 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
708 m above ground
0-6 km bulk shear
84 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

551 
WWUS71 KRNK 191933
NPWRNK

URGENT - WEATHER MESSAGE
National Weather Service Blacksburg VA
333 PM EDT Thu Apr 19 2018

...Windy conditions from the Blue Ridge West into this Evening...

.Windy conditions will persist west of the Blue Ridge as cold air
continues to spill into the Appalachians and central mid Atlantic
region. Some locations east of the Blue Ridge where the growing 
season is active will have low temperatures near freezing by
daybreak.

VAZ024-200345-
/O.UPG.KRNK.FZ.A.0001.180420T0600Z-180420T1300Z/
/O.NEW.KRNK.FZ.W.0001.180420T0600Z-180420T1300Z/
/O.CON.KRNK.WI.Y.0012.000000T0000Z-180420T0500Z/
Rockbridge-
Including the cities of Lexington and Buena Vista
333 PM EDT Thu Apr 19 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT FRIDAY...
...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY...

The National Weather Service in Blacksburg has issued a Freeze
Warning, which is in effect from 2 AM to 9 AM EDT Friday. The
Freeze Watch is no longer in effect.

* Temperatures...Dropping overnight to around freezing.

* Locations...Rockbridge County.

* Hazards...Strong gusty winds into this evening. Temperatures 
  near freezing late tonight.

* Winds...Northwest 15 to 25 mph with gusts up to 45 to 50 mph.

* Timing...Strong, gusty winds into this evening. Temperatures 
  dropping to near freezing tonight.

* Impacts...Small tree limbs may break and fall. Sporadic power 
  outages are possible. Sensitive outdoor vegetation may be 
  damaged or killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

A Wind Advisory is issued when sustained winds are forecast to be
31 to 39 MPH or gusts will range between 46 and 57 MPH. Winds of
these magnitudes may cause minor property damage without extra
precautions. Motorists in high profile vehicles should use extra
caution until the winds subside.

&&

$$

VAZ035-200345-
/O.UPG.KRNK.FZ.A.0001.180420T0600Z-180420T1300Z/
/O.NEW.KRNK.FZ.W.0001.180420T0600Z-180420T1300Z/
Amherst-
Including the city of Amherst
333 PM EDT Thu Apr 19 2018

...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY...

The National Weather Service in Blacksburg has issued a Freeze
Warning, which is in effect from 2 AM to 9 AM EDT Friday. The
Freeze Watch is no longer in effect.

* Locations...Amherst

* Hazards...Cold temperatures.

* Temperatures...Dropping overnight to around freezing.

* Timing...late tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or killed
  if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

VAZ046-047-200345-
/O.UPG.KRNK.FZ.A.0001.180420T0600Z-180420T1300Z/
/O.NEW.KRNK.FR.Y.0002.180420T0600Z-180420T1300Z/
Appomattox-Buckingham-
Including the city of Appomattox
333 PM EDT Thu Apr 19 2018

...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY...

The National Weather Service in Blacksburg has issued a Frost
Advisory, which is in effect from 2 AM to 9 AM EDT Friday. The
Freeze Watch is no longer in effect.

* Locations...Appomattox, and Buckingham Counties.

* Hazards...Cold temperatures.

* Temperatures...Dropping into the lower and middle 30s.

* Timing...late tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or killed
  if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$

VAZ022-023-200345-
/O.NEW.KRNK.FR.Y.0002.180420T0600Z-180420T1300Z/
/O.CON.KRNK.WI.Y.0012.000000T0000Z-180420T0500Z/
Roanoke-Botetourt-
Including the cities of Roanoke, Salem, and Fincastle
333 PM EDT Thu Apr 19 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT FRIDAY...
...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY...

The National Weather Service in Blacksburg has issued a Frost
Advisory, which is in effect from 2 AM to 9 AM EDT Friday.

* Temperatures...Dropping overnight into the lower and middle 30s.

* Locations...Strong gusty winds at the higher elevations. Cold
  temperatures across the rural areas of Roanoke and Botetourt
  counties.

* Hazards...Strong gusty winds. Cold temperatures late tonight.

* Winds...Northwest 15 to 25 mph with gusts 45 to 50 mph.

* Timing...Strong gusty winds into this evening. Cold 
  temperatures late tonight.

* Impacts...Small tree limbs may break and fall. Sporadic power
  outages are possible. Sensitive outdoor vegetation may be
  damaged or killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory is issued when sustained winds are forecast to be
31 to 39 MPH or gusts will range between 46 and 57 MPH. Winds of
these magnitudes may cause minor property damage without extra
precautions. Motorists in high profile vehicles should use extra
caution until the winds subside.

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$

NCZ003>006-019-020-VAZ032>034-043>045-058-059-200345-
/O.NEW.KRNK.FR.Y.0002.180420T0600Z-180420T1300Z/
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Patrick-Franklin-
Bedford-Henry-Pittsylvania-Campbell-Halifax-Charlotte-
Including the cities of Dobson, Danbury, Eden, Yanceyville, 
Wilkesboro, Yadkinville, Stuart, Rocky Mount, Bedford, 
Martinsville, Danville, Lynchburg, South Boston, and Keysville
333 PM EDT Thu Apr 19 2018

...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY...

The National Weather Service in Blacksburg has issued a Frost
Advisory, which is in effect from 2 AM to 9 AM EDT Friday.

* Locations...East of the Blue Ridge.

* Hazards...Cold temperatures.

* Temperatures...Dropping into the lower and middle 30s.

* Timing...Late tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or killed
  if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$

NCZ001-002-018-VAZ007-009>020-WVZ042>044-507-508-200345-
/O.CON.KRNK.WI.Y.0012.000000T0000Z-180420T0500Z/
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-
Including the cities of West Jefferson, Sparta, Boone, Tazewell, 
Marion, Bland, Pearisburg, Wytheville, Radford, Pulaski, 
Blacksburg, Independence, Whitetop, Troutdale, Volney, Galax, 
Floyd, New Castle, Clifton Forge, Covington, Hot Springs, 
Bluefield, Flat Top, Hinton, Hix, Union, Lewisburg, 
White Sulphur Springs, Alderson, Quinwood, Duo, and Rainelle
333 PM EDT Thu Apr 19 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT FRIDAY...

* Locations...Along and west of the Blue Ridge, especially the 
  higher elevations.

* Hazards...Strong gusty winds.

* Winds...Northwest 15 to 25 mph with gusts 45 to 50 mph.

* Timing...Strong gusty winds into this evening.

* Impacts...Small tree limbs may break and fall. Sporadic power 
  outages are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory is issued when sustained winds are forecast to be
31 to 39 MPH or gusts will range between 46 and 57 MPH. Winds of
these magnitudes may cause minor property damage without extra
precautions. Motorists in high profile vehicles should use extra
caution until the winds subside.

&&

$$
4 follow-up statements
607 
WWUS71 KRNK 192105
NPWRNK

URGENT - WEATHER MESSAGE
National Weather Service Blacksburg VA
505 PM EDT Thu Apr 19 2018

...Wind Speeds Continue to Diminish...

Winds will gradually diminish across the region this evening into
tonight. As a result, the wind advisory has been cancelled. As 
winds continue to decrease, this will allow some locations east of
the Blue Ridge where the growing season is active, to have low 
temperatures near freezing by daybreak.

VAZ024-200200-
/O.CAN.KRNK.WI.Y.0012.000000T0000Z-180420T0500Z/
/O.CON.KRNK.FZ.W.0001.180420T0600Z-180420T1300Z/
Rockbridge-
Including the cities of Lexington and Buena Vista
505 PM EDT Thu Apr 19 2018

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT
FRIDAY...
...WIND ADVISORY IS CANCELLED...

The National Weather Service in Blacksburg has cancelled the Wind
Advisory.

* Temperatures...Around 40.

* Locations...Rockbridge County.

* Hazards...Temperatures near freezing late tonight.

* Timing...Temperatures dropping to near freezing tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or killed
  if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

VAZ022-023-200200-
/O.CAN.KRNK.WI.Y.0012.000000T0000Z-180420T0500Z/
/O.CON.KRNK.FR.Y.0002.180420T0600Z-180420T1300Z/
Roanoke-Botetourt-
Including the cities of Roanoke, Salem, and Fincastle
505 PM EDT Thu Apr 19 2018

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT
FRIDAY...
...WIND ADVISORY IS CANCELLED...

The National Weather Service in Blacksburg has cancelled the Wind
Advisory.

* Temperatures...In the lower 40s.

* Locations...Cold temperatures across the rural areas of Roanoke
  and Botetourt counties.

* Hazards...Cold temperatures late tonight.

* Timing...Cold temperatures late tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or killed
  if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$

NCZ001-002-018-VAZ007-009>020-WVZ042>044-507-508-192215-
/O.CAN.KRNK.WI.Y.0012.000000T0000Z-180420T0500Z/
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-
Including the cities of West Jefferson, Sparta, Boone, Tazewell, 
Marion, Bland, Pearisburg, Wytheville, Radford, Pulaski, 
Blacksburg, Independence, Whitetop, Troutdale, Volney, Galax, 
Floyd, New Castle, Clifton Forge, Covington, Hot Springs, 
Bluefield, Flat Top, Hinton, Hix, Union, Lewisburg, 
White Sulphur Springs, Alderson, Quinwood, Duo, and Rainelle
505 PM EDT Thu Apr 19 2018

...WIND ADVISORY IS CANCELLED...

The National Weather Service in Blacksburg has cancelled the Wind
Advisory.

Winds will continue to diminish this evening and tonight. As a
result, the wind advisory has been cancelled.

$$

VAZ035-200200-
/O.CON.KRNK.FZ.W.0001.180420T0600Z-180420T1300Z/
Amherst-
Including the city of Amherst
505 PM EDT Thu Apr 19 2018

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT
FRIDAY...

* Locations...Amherst

* Hazards...Cold temperatures.

* Temperatures...In the upper 30s.

* Timing...late tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

NCZ003>006-019-020-VAZ032>034-043>047-058-059-200200-
/O.CON.KRNK.FR.Y.0002.180420T0600Z-180420T1300Z/
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Patrick-Franklin-
Bedford-Henry-Pittsylvania-Campbell-Appomattox-Buckingham-Halifax-
Charlotte-
Including the cities of Dobson, Danbury, Eden, Yanceyville, 
Wilkesboro, Yadkinville, Stuart, Rocky Mount, Bedford, 
Martinsville, Danville, Lynchburg, Appomattox, South Boston, 
and Keysville
505 PM EDT Thu Apr 19 2018

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT
FRIDAY...

* Locations...East of the Blue Ridge.

* Hazards...Cold temperatures.

* Temperatures...In the upper 30s.

* Timing...Late tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
169 
WWUS71 KRNK 200215
NPWRNK

URGENT - WEATHER MESSAGE
National Weather Service Blacksburg VA
1015 PM EDT Thu Apr 19 2018

...Patchy frost and freezing conditions expected early Friday
morning...

Under mostly clear skies and diminishing winds, temperatures east
of the Blue Ridge, where the growing season is active, will fall
to near freezing by daybreak Friday.


VAZ024-035-200930-
/O.CON.KRNK.FZ.W.0001.180420T0600Z-180420T1300Z/
Rockbridge-Amherst-
Including the cities of Lexington, Buena Vista, and Amherst
1015 PM EDT Thu Apr 19 2018

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT
FRIDAY...

* Locations...Amherst

* Hazards...Cold temperatures.

* Temperatures...In the low to mid 30s.

* Timing...late tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

NCZ003>006-019-020-VAZ022-023-032>034-043>047-058-059-200930-
/O.CON.KRNK.FR.Y.0002.180420T0600Z-180420T1300Z/
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Roanoke-Botetourt-
Patrick-Franklin-Bedford-Henry-Pittsylvania-Campbell-Appomattox-
Buckingham-Halifax-Charlotte-
Including the cities of Dobson, Danbury, Eden, Yanceyville, 
Wilkesboro, Yadkinville, Roanoke, Salem, Fincastle, Stuart, 
Rocky Mount, Bedford, Martinsville, Danville, Lynchburg, 
Appomattox, South Boston, and Keysville
1015 PM EDT Thu Apr 19 2018

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT
FRIDAY...

* Locations...East of the Blue Ridge.

* Hazards...Cold temperatures.

* Temperatures...In the low to mid 30s.

* Timing...Late tonight.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
514 
WWUS71 KRNK 200750
NPWRNK

URGENT - WEATHER MESSAGE
National Weather Service Blacksburg VA
350 AM EDT Fri Apr 20 2018

...Patchy frost and freezing conditions this morning and again
Saturday morning...

Under mostly clear skies and light winds, temperatures east of 
the Blue Ridge, where the growing season is active, will fall to 
near freezing early this morning and again Saturday morning.

VAZ024-201400-
/O.NEW.KRNK.FZ.A.0002.180421T0600Z-180421T1300Z/
/O.CON.KRNK.FZ.W.0001.000000T0000Z-180420T1300Z/
Rockbridge-
Including the cities of Lexington and Buena Vista
350 AM EDT Fri Apr 20 2018

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY
MORNING...

The National Weather Service in Blacksburg has issued a Freeze
Watch, which is in effect from late tonight through Saturday
morning.

* Locations...Rockbridge County

* Hazards...Cold temperatures.

* Temperatures...in the upper 20s to mid 30s.

* Timing...early this morning and again early Saturday morning.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

A Freeze Watch means sub-freezing temperatures are possible.
These conditions could kill crops and other sensitive vegetation.

&&

$$

VAZ035-201300-
/O.CON.KRNK.FZ.W.0001.000000T0000Z-180420T1300Z/
Amherst-
Including the city of Amherst
350 AM EDT Fri Apr 20 2018

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...

* Locations...Amherst County

* Hazards...Cold temperatures.

* Temperatures...In the upper 20s to upper 30s.

* Timing...early this morning.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

VAZ023-201400-
/O.NEW.KRNK.FZ.A.0002.180421T0600Z-180421T1300Z/
/O.CON.KRNK.FR.Y.0002.000000T0000Z-180420T1300Z/
Botetourt-
Including the city of Fincastle
350 AM EDT Fri Apr 20 2018

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY
MORNING...

The National Weather Service in Blacksburg has issued a Freeze
Watch, which is in effect from late tonight through Saturday
morning.

* Locations...Botetourt County.

* Hazards...Cold temperatures. Areas of frost. 

* Temperatures...In the upper 20s to mid 30s. 

* Timing...early this morning and again Saturday morning.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

A Freeze Watch means sub-freezing temperatures are possible.
These conditions could kill crops and other sensitive vegetation.

&&

$$

NCZ003>006-019-020-VAZ022-032>034-043>047-058-059-201300-
/O.CON.KRNK.FR.Y.0002.000000T0000Z-180420T1300Z/
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Roanoke-Patrick-
Franklin-Bedford-Henry-Pittsylvania-Campbell-Appomattox-
Buckingham-Halifax-Charlotte-
Including the cities of Dobson, Danbury, Eden, Yanceyville, 
Wilkesboro, Yadkinville, Roanoke, Salem, Stuart, Rocky Mount, 
Bedford, Martinsville, Danville, Lynchburg, Appomattox, 
South Boston, and Keysville
350 AM EDT Fri Apr 20 2018

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...

* Locations...East of the Blue Ridge.

* Hazards...Cold temperatures and areas of frost.

* Temperatures...In the lower 30s to lower 40s.

* Timing...early this morning.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
053 
WWUS71 KRNK 201308
NPWRNK

URGENT - WEATHER MESSAGE
National Weather Service Blacksburg VA
908 AM EDT Fri Apr 20 2018

...Patchy frost and freezing conditions Saturday morning...

Under mostly clear skies and light winds, temperatures east of
the Blue Ridge, where the growing season is active, will fall to
near freezing again Saturday morning.

VAZ024-202100-
/O.EXP.KRNK.FZ.W.0001.000000T0000Z-180420T1300Z/
/O.CON.KRNK.FZ.A.0002.180421T0600Z-180421T1300Z/
Rockbridge-
Including the cities of Lexington and Buena Vista
908 AM EDT Fri Apr 20 2018

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING...
...FREEZE WARNING HAS EXPIRED...

* Locations...Rockbridge County

* Hazards...Cold temperatures.

* Temperatures...Around freezing.

* Timing...Early Saturday morning.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Watch means sub-freezing temperatures are possible.
These conditions could kill crops and other sensitive vegetation.

&&

$$

VAZ035-201415-
/O.EXP.KRNK.FZ.W.0001.000000T0000Z-180420T1300Z/
Amherst-
Including the city of Amherst
908 AM EDT Fri Apr 20 2018

...FREEZE WARNING HAS EXPIRED...

Temperatures have warmed above freezing, therefore the warning has
been allowed to expire.

$$

VAZ023-202100-
/O.EXP.KRNK.FR.Y.0002.000000T0000Z-180420T1300Z/
/O.CON.KRNK.FZ.A.0002.180421T0600Z-180421T1300Z/
Botetourt-
Including the city of Fincastle
908 AM EDT Fri Apr 20 2018

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING...
...FROST ADVISORY HAS EXPIRED...

* Locations...Botetourt County.

* Hazards...Cold temperatures.

* Temperatures...Around freezing.

* Timing...Early Saturday morning.

* Impacts...Sensitive outdoor vegetation may be damaged or 
  killed if not protected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Watch means sub-freezing temperatures are possible.
These conditions could kill crops and other sensitive vegetation.

&&

$$

NCZ003>006-019-020-VAZ022-032>034-043>047-058-059-201415-
/O.EXP.KRNK.FR.Y.0002.000000T0000Z-180420T1300Z/
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Roanoke-Patrick-
Franklin-Bedford-Henry-Pittsylvania-Campbell-Appomattox-
Buckingham-Halifax-Charlotte-
Including the cities of Dobson, Danbury, Eden, Yanceyville, 
Wilkesboro, Yadkinville, Roanoke, Salem, Stuart, Rocky Mount, 
Bedford, Martinsville, Danville, Lynchburg, Appomattox, 
South Boston, and Keysville
908 AM EDT Fri Apr 20 2018

...FROST ADVISORY HAS EXPIRED...

Temperatures are warming to around into the upper 30s to around
40...therefore the frost advisory has been allowed to expire.

$$

What forecasters said that day

The local office's own words before this frost advisory 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 frost advisory went out at Apr 19, 2:53 PM EDT, 40 minutes earlier.

Area forecast discussion, Apr 19, 2:53 PM EDT, 40 minutes before
Area Forecast Discussion
National Weather Service Blacksburg VA
253 PM EDT Thu Apr 19 2018

.SYNOPSIS...
Low pressure over Virginia will move offshore and up the
northeast coast today with a cold front advancing from Virginia
to Florida by this evening. A large high builds in behind this
system and will cover the eastern United States Friday and
Saturday. A low pressure system over the Southern Plains
Saturday will move east, reaching Georgia by Tuesday.

&&

.NEAR TERM /THROUGH FRIDAY/...
As of 935 AM EDT Thursday...

Upstream radars show precipitation associated with short wave
energy rotating around the base of the upper trof heading in our
direction, and this is captured well in POP grids.

Winds this morning are underperforming a bit compared to
conditions advertised in yesterdays guidance. 06Z NAM low level
winds seem to match 12Z RNK sounding best and Bufkit indicates
that once better diurnal mixing kicks in it will still be a
blustery day. No changes planned for current wind advisory but
it looks like it will be closer to the low end of criteria. As
winds pick up and drier air moves in, ground fuels will dry and
create enhanced fire danger east of the Blue Ridge through
early this evening.

Previous discussion...

Combination of pressure rises, low level jet and cold air
advection will be enough for gusts of 40 to 50 mph at the
highest elevations. Have lowered minimum temperatures a couple
of degrees for tonight which brings lows to near freezing north
of Lynchburg. Will introduce Freeze Watch for tonight from
Appomattox County to Rockbridge County. Winds lighten but
questionable if they get light enough to allow for frost across
southern Virginia and northern North Carolina, given that the
center of the high will be over the western Great Lakes.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
As of 230 AM EDT Thursday...

High pressure will rule the roost into the weekend with no rain
expected until early next week. Cloud cover will increase each day,
as well as afternoon temperatures. Friday's highs will range from
the 50s west of the Blue Ridge to the low to mid 60s east.
Widespread 60 degree temperatures are expected Saturday with the
exception of higher ridges being in the mid 50s. More 60 degree
temperatures on tap Sunday with the piedmont flirting with the lower
70s. Temperatures Sunday are close to normal highs for this time of
year.

Temperatures Friday night going into Saturday morning will range in
the low to mid 30s. Low level moisture will be scarce, but some
patchy frost is possible. Sensitive vegetation should be protected.
Temperatures Saturday night into Sunday morning will be mild with
temperatures ranging from the mid to upper 30s west and lower 40s
east.

&&

.LONG TERM /SUNDAY NIGHT THROUGH WEDNESDAY/...
As of 145 PM EDT Wednesday...

Going to be wet/cool but not cold period, as upper low develops over
the lower MS Valley Sunday and pushes across the northern tier of
the Gulf Coast states Sunday afternoon into Tuesday. Models have
trended north, but would like to see more consistency in them, as a
further south track would lead to dry/cool with more sun while north
would be wetter/cloudier but still a bit on the cool side.

For consensus, models are showing more of cloudy pattern with threat
of rain each day. As the low moves off the coast Wednesday, a
northern stream front shift in from the northwest with another
threat of showers.

Sunday appears the drier of this period with increasing clouds.
Highs will range from the mid 50s to lower 60s mountains, with mid
to upper 60s in the piedmont/foothills, which is about 5 degrees
below normal.

Lows will be close to normal during the week with mid 30s to lower
40s west, to lower to mid 40s east.

Highs Monday-Tuesday will be around 10 degrees below normal, ranging
from the lower to mid 50s west, to upper 50s to lower 60s east.

May be a little warmer Wednesday ahead of next front with upper 50s
to lower 60s mountains, to mid to upper 60s east.

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
As of 250 PM EDT Thursday...

Gusty winds will gradually be subsiding at TAF sites overnight
as high pressure builds over the region. Locations east of the
Blue Ridge will generally have VFR conditions throughout the
period, but locations west of the Ridge will start off with MVFR
cigs and some rain/snow showers in the vicinity, before
trending to VFR early this evening.

Extended Aviation Discussion...

VFR conditions into Saturday as high pressure slowly builds in
from the northwest. Winds will continue to diminish into
Saturday.

Clouds will begin to creep back into the area on Sunday in
advance of an approaching low in the Lower Mississippi River
Valley. However, cigs should remain VFR even while the ceiling
heights lower and clouds thicken. SCT MVFR showers are possible
in southern Virginia and northern North Carolina Sunday night
with rain becoming more widespread across the Mid Atlantic
region on Monday.

&&

.RNK WATCHES/WARNINGS/ADVISORIES...
VA...Wind Advisory until 1 AM EDT Friday for VAZ007-009>020-022>024.
     Freeze Watch from 2 AM EDT Friday through Friday morning for
     VAZ024-035-046-047.
NC...Wind Advisory until 1 AM EDT Friday for NCZ001-002-018.
WV...Wind Advisory until 1 AM EDT Friday for WVZ042>044-507-508.

&&

SYNOPSIS...MBS
NEAR TERM...MBS
SHORT TERM...RCS
LONG TERM...WP
AVIATION...AMS/MBS
Hazardous weather outlook, Apr 19, 5:52 AM EDT, 9 hours 41 minutes before
Hazardous Weather Outlook
National Weather Service Blacksburg VA
552 AM EDT Thu Apr 19 2018

NCZ003>006-019-020-VAZ032>034-043>045-058-059-201000-
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Patrick-Franklin-
Bedford-Henry-Pittsylvania-Campbell-Halifax-Charlotte-
552 AM EDT Thu Apr 19 2018

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...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001-002-018-VAZ007-009>020-022-023-WVZ042>044-507-508-201000-
Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-
Montgomery-Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Roanoke-
Botetourt-Mercer-Summers-Monroe-Eastern Greenbrier-
Western Greenbrier-
552 AM EDT Thu Apr 19 2018

...WIND ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY...

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

.DAY ONE...Today and tonight.

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

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

VAZ024-201000-
Rockbridge-
552 AM EDT Thu Apr 19 2018

...WIND ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY...
...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for west central Virginia.

.DAY ONE...Today and tonight.

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

   Wind Advisory.
   Freeze Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Freeze Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

VAZ035-046-047-201000-
Amherst-Appomattox-Buckingham-
552 AM EDT Thu Apr 19 2018

...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for central Virginia.

.DAY ONE...Today and tonight.

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

   Freeze Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Freeze Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 5:37 AM EDTFreeze WatchRNKAmherst, Appomattox, Buckingham, Rockbridge, City of Buena Vista, City of Lexington10 hr
Apr 19, 3:33 PM EDTFreeze WarningRNKAmherst, Rockbridge, City of Buena Vista, City of Lexington17 hr

Nearby

Frost Advisories in Virginia, 2018Frost Advisories in North Carolina, 2018Every frost advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.