Alert archive / Virginia / Special Weather Statements in 2017

Special Weather Statement, NWS Blacksburg, VA

March 18, 20176 counties in Virginia

NWS Blacksburg, VA issued this special weather statement at Mar 18, 2017, 4:15 PM EDT for 6 counties in Virginia. It was in force for 60 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 18, 2017, 4:15 PM EDT (20:15 UTC)
Expired: Mar 18, 2017, 5:15 PM EDT
In force: 60 min
Issued by: NWS Blacksburg, VA

Counties Appomattox County, VA, Buckingham County, VA, Campbell County, VA, Charlotte County, VA, Halifax County, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 144 km from the middle of the area, began a volume at 20:18 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, 8.3 hours before the alert went out and 74 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 477 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 143 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 18, 3:12 PM EDT, 1 hour 3 minutes earlier.

Area forecast discussion, Mar 18, 3:12 PM EDT, 1 hour 3 minutes before

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Hazardous weather outlook, Mar 18, 12:17 PM EDT, 3 hours 58 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Blacksburg VA
1217 PM EDT Sat Mar 18 2017

NCZ001-002-018-VAZ007-009>020-022-WVZ042>044-507-508-191630-
Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-
Montgomery-Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Roanoke-
Mercer-Summers-Monroe-Eastern Greenbrier-Western Greenbrier-
1217 PM EDT Sat Mar 18 2017

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

.DAY ONE...This afternoon and tonight.

The probability for widespread hazardous weather is low.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ003>006-019-020-VAZ023-024-032>035-043>047-058-059-191630-
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Botetourt-Rockbridge-
Patrick-Franklin-Bedford-Amherst-Henry-Pittsylvania-Campbell-
Appomattox-Buckingham-Halifax-Charlotte-
1217 PM EDT Sat Mar 18 2017

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.

Isolated strong to severe thunderstorms will be possible this
afternoon into early this evening ahead of a cold front arriving from
the west. Damaging winds along with isolated large hail will be the
primary threats.

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

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Mar 18, 3:45 PM EDT, 30 minutes before

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Special weather statement, Mar 18, 3:50 PM EDT, 25 minutes before

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Special weather statement, Mar 18, 3:55 PM EDT, 20 minutes before

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Special weather statement, Mar 18, 3:59 PM EDT, 16 minutes before

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Local storm report, Mar 18, 4:08 PM EDT, 7 minutes before

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Special weather statement, Mar 18, 4:15 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 8:54 PM EDT	Special Weather Statement	RNK	Botetourt, Craig, Giles, Montgomery, Pulaski, Roanoke and 3 more	21 min
Mar 17, 9:23 PM EDT	Special Weather Statement	RNK	Bland, Floyd, Franklin, Montgomery, Pulaski, Tazewell and 2 more	22 min
Mar 18, 2:13 PM EDT	Special Weather Statement	RNK	Giles	47 min
Mar 18, 2:23 PM EDT	Special Weather Statement	RNK	Botetourt, Craig	52 min
Mar 18, 2:25 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	65 min
Mar 18, 2:43 PM EDT	Special Weather Statement	RNK	Bedford, Roanoke, City of Roanoke, City of Salem	62 min
Mar 18, 2:46 PM EDT	Special Weather Statement	RNK	Giles	29 min
Mar 18, 2:59 PM EDT	Special Weather Statement	RNK	Montgomery, Pulaski, City of Radford	31 min
Mar 18, 3:02 PM EDT	Special Weather Statement	RNK	Bland, Wythe	58 min
Mar 18, 3:09 PM EDT	Special Weather Statement	RNK	Appomattox, Buckingham, Campbell, City of Lynchburg	66 min
Mar 18, 3:21 PM EDT	Special Weather Statement	RNK	Craig	24 min
Mar 18, 3:27 PM EDT	Special Weather Statement	RNK	Bedford	18 min
Mar 18, 3:28 PM EDT	Special Weather Statement	RNK	City of Roanoke	17 min
Mar 18, 3:33 PM EDT	Special Weather Statement	RNK	Giles	12 min
Mar 18, 3:45 PM EDT	Special Weather Statement	RNK	Charlotte	30 min
Mar 18, 3:50 PM EDT	Special Weather Statement	RNK	Bedford	25 min
Mar 18, 3:55 PM EDT	Special Weather Statement	RNK	Pulaski, City of Radford	35 min
Mar 18, 3:59 PM EDT	Special Weather Statement	RNK	Pittsylvania	16 min
Mar 18, 4:20 PM EDT	Special Weather Statement	RNK	Botetourt, Craig	25 min
Mar 18, 5:07 PM EDT	Special Weather Statement	RNK	City of Danville	8 min
Mar 18, 5:09 PM EDT	Special Weather Statement	RNK	Bedford	36 min
Mar 18, 5:14 PM EDT	Special Weather Statement	RNK	Charlotte, Halifax, City of Danville	46 min
Mar 18, 5:43 PM EDT	Special Weather Statement	RNK	City of Roanoke	32 min
Mar 18, 5:46 PM EDT	Special Weather Statement	RNK	Amherst, City of Buena Vista	44 min
Mar 18, 6:08 PM EDT	Special Weather Statement	RNK	Halifax	22 min

Nearby

Special Weather Statements in Virginia, 2017 Every special weather statement in 2017

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.