Alert archive / Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

March 28, 2021Halifax County, Virginia

NWS Blacksburg, VA issued this special weather statement at Mar 28, 2021, 7:59 PM EDT for Halifax County, Virginia. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 28, 2021, 7:59 PM EDT (23:59 UTC)
Expired
Mar 28, 2021, 8:45 PM EDT
In force
46 min
Issued by
NWS Blacksburg, VA

County Halifax County, VA

The radar

The Raleigh/Durham radar (KRAX), 113 km from the middle of the area, began a volume at 00:00 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, 12.0 hours before the alert went out and 86 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 2021-03-28Temperature 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 2021-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 274 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
708 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
274 m²/s²
0-3 km storm-relative helicity
285 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 28, 7:26 PM EDT, 33 minutes earlier.

Area forecast discussion, Mar 28, 7:26 PM EDT, 33 minutes before
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Hazardous weather outlook, Mar 28, 2:41 PM EDT, 5 hours 18 minutes before
Hazardous Weather Outlook
National Weather Service Blacksburg VA
241 PM EDT Sun Mar 28 2021

NCZ004>006-VAZ043>047-058-059-291845-
Stokes-Rockingham-Caswell-Henry-Pittsylvania-Campbell-Appomattox-
Buckingham-Halifax-Charlotte-
241 PM EDT Sun Mar 28 2021

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

.DAY ONE...This afternoon and tonight.

Thunderstorms this afternoon and early evening may be strong to
severe. Damaging wind gusts will be the main threat. An isolated
tornado and large hail will also be possible.

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

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotters have been activated across this region in
anticipation of the potential for severe weather this afternoon and
early evening.

NCZ001-002-018-VAZ007-009>020-WVZ044-507-508-291845-
Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-
Montgomery-Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Monroe-
Eastern Greenbrier-Western Greenbrier-
241 PM EDT Sun Mar 28 2021

...WIND ADVISORY IN EFFECT UNTIL 4 AM EDT MONDAY...

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

   Wind Advisory.

In addition, showers, and a thunderstorm or two, are possible this
afternoon. Localized heavy rain could result in isolated, short term,
flooding.

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

Very gusty winds, similar to those expected tonight, are possible
Wednesday night into Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is unlikely.

WVZ042-043-291845-
Mercer-Summers-
241 PM EDT Sun Mar 28 2021

This Hazardous Weather Outlook is for southeast West Virginia.

.DAY ONE...This afternoon and tonight.

Showers, and a thunderstorm or two, are possible this afternoon.
Localized heavy rain could result in isolated, short term, flooding.

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

Very gusty winds are possible Wednesday night into Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

VAZ022>024-032>035-291845-
Roanoke-Botetourt-Rockbridge-Patrick-Franklin-Bedford-Amherst-
241 PM EDT Sun Mar 28 2021

...WIND ADVISORY IN EFFECT UNTIL 4 AM EDT MONDAY...

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.

   Wind Advisory.

In addition, showers and a few thunderstorms are possible this
afternoon. There is a small potential for one or two of these storms
to increase to severe levels, with damaging winds the main threat.
Large hail and isolated tornado potential is low, but not zero.

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

Very gusty winds are possible Wednesday night into Thursday.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotters have been activated across this region in
anticipation of the potential for severe weather this afternoon and
early evening.

NCZ003-019-020-291845-
Surry-Wilkes-Yadkin-
241 PM EDT Sun Mar 28 2021

This Hazardous Weather Outlook is for north central North Carolina
and northwest North Carolina.

.DAY ONE...This afternoon and tonight.

Showers and a few thunderstorms are possible this afternoon. There
is a small potential for one or two of these storms to increase to
severe levels, with damaging winds the main threat. Large hail and
isolated tornado potential is low, but not zero.

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

Very gusty winds are possible Wednesday night into Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

In the hours before

Special weather statement, Mar 28, 4:38 PM EDT, 3 hours 21 minutes before
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Special weather statement, Mar 28, 5:40 PM EDT, 2 hours 19 minutes before
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Special weather statement, Mar 28, 6:03 PM EDT, 1 hour 56 minutes before
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Special weather statement, Mar 28, 6:07 PM EDT, 1 hour 52 minutes before
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Special weather statement, Mar 28, 7:06 PM EDT, 53 minutes before
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Special weather statement, Mar 28, 7:59 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 28, 12:05 AM EDTSpecial Weather StatementRNKCity of Danville25 min
Mar 28, 2:35 AM EDTSpecial Weather StatementRNKBland, Smyth, Wythe25 min
Mar 28, 2:43 AM EDTAreal Flood AdvisoryRNKBland, Grayson, Smyth, Tazewell, Wythe3 hr
Mar 28, 2:47 AM EDTSpecial Weather StatementRNKSmyth28 min
Mar 28, 3:12 AM EDTSpecial Weather StatementRNKBland, Wythe33 min
Mar 28, 3:58 AM EDTWind AdvisoryRNKAlleghany, Amherst, Bath, Bedford, Bland, Botetourt and 21 more22 hr
Mar 28, 7:52 AM EDTAreal Flood AdvisoryRNKSmyth, Tazewell4 hr
Mar 28, 10:05 AM EDTAreal Flood AdvisoryRNKTazewell4 hr
Mar 28, 2:12 PM EDTSpecial Weather StatementRNKAlleghany, Bath, Bland, Giles, Grayson, Smyth and 3 more63 min
Mar 28, 3:28 PM EDTSpecial Weather StatementRNKAlleghany, Bath, Botetourt, Craig, Rockbridge, City of Buena Vista and 2 more62 min
Mar 28, 3:33 PM EDTSpecial Weather StatementRNKBedford, Carroll, Floyd, Franklin, Montgomery, Pulaski and 6 more57 min
Mar 28, 3:54 PM EDTSpecial Weather StatementRNKGrayson66 min
Mar 28, 4:33 PM EDTSpecial Weather StatementRNKAmherst, Bedford, Botetourt, Campbell, Rockbridge, City of Buena Vista and 2 more72 min
Mar 28, 4:38 PM EDTSpecial Weather StatementRNKCarroll, Floyd, Franklin, Patrick, City of Galax82 min
Mar 28, 5:40 PM EDTSpecial Weather StatementRNKAppomattox, Buckingham, Campbell, City of Lynchburg80 min
Mar 28, 6:07 PM EDTSpecial Weather StatementRNKPittsylvania53 min
Mar 28, 7:06 PM EDTSpecial Weather StatementRNKHalifax, Pittsylvania, City of Danville54 min
Mar 27, 10:12 PM EDTSpecial Weather StatementRNKAlleghany, Ashe33 min
Mar 27, 11:07 PM EDTSpecial Weather StatementRNKStokes, Surry23 min
Mar 27, 11:29 PM EDTSpecial Weather StatementRNKRockingham, Stokes31 min
Mar 28, 6:03 PM EDTSpecial Weather StatementRNKStokes, Surry, Yadkin57 min

Nearby

Special Weather Statements in Virginia, 2021Every special weather statement in 2021

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.