Alert archive / Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

May 28, 2021Henry County, City of Martinsville, Virginia

NWS Blacksburg, VA issued this special weather statement at May 28, 2021, 10:47 PM EDT for Henry County, City of Martinsville, Virginia. It was in force for 28 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
May 28, 2021, 10:47 PM EDT (02:47 UTC)
Expired
May 28, 2021, 11:15 PM EDT
In force
28 min
Issued by
NWS Blacksburg, VA

Counties City of Martinsville, VA, Henry County, VA

The radar

The Roanoke radar (KFCX), 51 km from the middle of the area, began a volume at 02:51 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 00:00Z, 2.8 hours before the alert went out and 54 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 2021-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 97 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 2021-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 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
97 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
696 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
-2 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 May 28, 7:17 PM EDT, 3 hours 30 minutes earlier.

Area forecast discussion, May 28, 7:17 PM EDT, 3 hours 30 minutes before
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Hazardous weather outlook, May 28, 2:30 PM EDT, 8 hours 17 minutes before
Hazardous Weather Outlook
National Weather Service Blacksburg VA
230 PM EDT Fri May 28 2021

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-291830-
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Grayson-
Carroll-Floyd-Craig-Alleghany VA-Bath-Roanoke-Botetourt-Rockbridge-
Patrick-Franklin-Bedford-Amherst-Henry-Pittsylvania-Campbell-
Appomattox-Buckingham-Halifax-Charlotte-Mercer-Summers-Monroe-
Eastern Greenbrier-Western Greenbrier-
230 PM EDT Fri May 28 2021

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

.DAY ONE...This afternoon and tonight.

Scattered severe thunderstorms are expected during the afternoon and
evening. Damaging winds and marginally severe hail are the primary
threats. An isolated tornado is possible along and east of US-29.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

In the hours before

Local storm report, May 28, 4:57 PM EDT, 5 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
457 PM EDT FRI MAY 28 2021

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

0420 PM     TSTM WND DMG     2 N ROCKY MOUNT         37.03N 79.88W
05/28/2021                   FRANKLIN           VA   BROADCAST MEDIA

            TREE DOWN ON US HIGHWAY 220 BLOCKING ONE
            LANE NEAR THE EXIT RAMP TO ROCKY MOUNT. TIME
            ESTIMATED FROM RADAR.

&&

VFJ
Special weather statement, May 28, 5:14 PM EDT, 5 hours 33 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
514 PM EDT Fri May 28 2021

VAZ045>047-058-059-282145-
Halifax-Buckingham-Campbell-Charlotte-Appomattox-
514 PM EDT Fri May 28 2021

...STRONG THUNDERSTORMS WILL AFFECT APPOMATTOX...CHARLOTTE...EASTERN
CAMPBELL...NORTHWESTERN HALIFAX AND SOUTHWESTERN BUCKINGHAM
COUNTIES...

At 513 PM EDT, radar indicated strong thunderstorms extending from
Spout Spring...through Red House...to near Leda. Movement was
northeast at 40 mph.

Winds in excess of 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Buckingham...
Appomattox...
Brookneal...
Keysville...
Charlotte Court House...
Dillwyn...
and Phenix.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3733 7848 3733 7852 3738 7859 3740 7860
      3734 7860 3727 7868 3720 7869 3719 7864
      3714 7859 3715 7855 3714 7852 3709 7848
      3708 7844 3705 7845 3681 7908 3705 7899
      3737 7904 3761 7847 3746 7838
TIME...MOT...LOC 2113Z 239DEG 40KT 3735 7893 3713 7878 3686 7901

MBS
Special weather statement, May 28, 5:21 PM EDT, 5 hours 26 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
521 PM EDT Fri May 28 2021

NCZ006-VAZ058-059-282200-
Caswell-Halifax-Charlotte-
521 PM EDT Fri May 28 2021

...STRONG THUNDERSTORMS WILL AFFECT CASWELL...SOUTHEASTERN CHARLOTTE
AND HALIFAX COUNTIES...

At 519 PM EDT, radar indicated strong thunderstorms developing from
from Crystal Hill...through Milton...to near Camp Springs. Movement
was east at 35 mph.

Winds in excess of 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
South Boston...
Yanceyville...
Halifax...
Keysville...
Jericho...
Prospect Hill...
and Turbeville.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3689 7849 3669 7864 3668 7870 3660 7871
      3654 7877 3654 7914 3624 7916 3625 7952
      3654 7926 3654 7922 3660 7920 3689 7894
      3708 7844
TIME...MOT...LOC 2119Z 248DEG 28KT 3686 7892 3656 7920 3626 7947

MBS
Special weather statement, May 28, 5:38 PM EDT, 5 hours 9 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
538 PM EDT Fri May 28 2021

VAZ013-014-016-017-282215-
Pulaski-Floyd-Montgomery-Carroll-
538 PM EDT Fri May 28 2021

...DEVELOPING STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN
PULASKI...FLOYD...NORTHEASTERN CARROLL AND SOUTHERN MONTGOMERY
COUNTIES...

At 537 PM EDT, strong thunderstorms were developing near Indian
Valley, moving east at 40 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Floyd...
Indian Valley...
Pilot...
Willis...
Allisonia...
Copper Hill...
and Shawsville.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3697 8076 3719 8019 3717 8018 3711 8018
      3711 8015 3702 8011 3701 8012 3700 8014
      3699 8012 3698 8014 3695 8014 3695 8018
      3690 8020 3681 8067
TIME...MOT...LOC 2137Z 249DEG 41KT 3692 8063

MBS
Special weather statement, May 28, 6:17 PM EDT, 4 hours 30 minutes before
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Special weather statement, May 28, 7:05 PM EDT, 3 hours 42 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 8:24 PM EDTSpecial Weather StatementRNKWilkes36 min
May 28, 8:57 PM EDTSpecial Weather StatementRNKWilkes33 min
May 29, 3:03 PM EDTSpecial Weather StatementRNKCaswell27 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.