Alert archive / North Carolina / Special Weather Statements in 2013

Special Weather Statement, NWS Blacksburg, VA

July 20, 2013Stokes County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Jul 20, 2013, 12:39 PM EDT for Stokes County, North Carolina. It was in force for 51 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: Jul 20, 2013, 12:39 PM EDT (16:39 UTC)
Expired: Jul 20, 2013, 1:30 PM EDT
In force: 51 min
Issued by: NWS Blacksburg, VA

County Stokes County, NC

The radar

The Roanoke radar (KFCX), 69 km from the middle of the area, began a volume at 16:41 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.7 hours before the alert went out and 61 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: 1715 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 563 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Jul 20, 10:11 AM EDT, 2 hours 28 minutes earlier.

Area forecast discussion, Jul 20, 10:11 AM EDT, 2 hours 28 minutes before

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Hazardous weather outlook, Jul 20, 3:50 AM EDT, 8 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
350 AM EDT SAT JUL 20 2013

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-210800-
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-
GREENBRIER-
350 AM EDT SAT JUL 20 2013

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...TODAY AND TONIGHT.

BANDS OR CLUSTERS OF STRONGER THUNDERSTORMS ARE EXPECTED THIS
AFTERNOON AND EVENING. A FEW OF THE STORMS MAY BE SEVERE WITH
DAMAGING WINDS AND HAIL. FLASH FLOODING COULD ALSO OCCUR IN ANY
OF THE SLOW MOVING STORMS THAT PERSIST OR TRAIN ACROSS THE SAME
AREAS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SCATTERED THUNDERSTORMS ARE EXPECTED TO CONTINUE ACROSS THE AREA
NEAR A WEAK COLD FRONT THAT WILL LINGER INTO EARLY NEXT WEEK.
THIS WILL RESULT IN MORE OF A FLASH FLOODING THREAT SUNDAY
THROUGH MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON INTO THIS
EVENING.

In the hours before

Special weather statement, Jul 20, 9:19 AM EDT, 3 hours 20 minutes before

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Local storm report, Jul 20, 10:42 AM EDT, 1 hour 57 minutes before

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Special weather statement, Jul 20, 10:52 AM EDT, 1 hour 47 minutes before

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Special weather statement, Jul 20, 12:14 PM EDT, 25 minutes before

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Special weather statement, Jul 20, 12:39 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
Jul 20, 9:19 AM EDT	Special Weather Statement	RNK	Grayson	56 min
Jul 20, 1:20 PM EDT	Special Weather Statement	RNK	City of Martinsville	55 min
Jul 20, 2:12 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	48 min
Jul 20, 2:46 PM EDT	Special Weather Statement	RNK	Campbell	29 min
Jul 20, 3:07 PM EDT	Special Weather Statement	RNK	Rockbridge	23 min
Jul 20, 3:27 PM EDT	Special Weather Statement	RNK	Campbell	33 min
Jul 20, 3:57 PM EDT	Special Weather Statement	RNK	City of Buena Vista	18 min
Jul 20, 4:41 PM EDT	Special Weather Statement	RNK	Pulaski	64 min
Jul 20, 4:57 PM EDT	Special Weather Statement	RNK	Halifax	63 min
Jul 20, 5:15 PM EDT	Areal Flood Advisory	RNK	Pulaski	60 min
Jul 20, 5:25 PM EDT	Special Weather Statement	RNK	Appomattox, City of Lynchburg	50 min
Jul 20, 5:34 PM EDT	Special Weather Statement	RNK	Giles	41 min
Jul 20, 5:44 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox	61 min
Jul 20, 5:59 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	46 min
Jul 20, 6:32 PM EDT	Special Weather Statement	RNK	Appomattox	58 min
Jul 20, 6:47 PM EDT	Flash Flood Warning	RNK	Amherst, Appomattox, Campbell, City of Lynchburg	3 hr
Jul 20, 7:09 PM EDT	Special Weather Statement	RNK	Bath	66 min
Jul 20, 10:52 AM EDT	Special Weather Statement	RNK	Wilkes	38 min
Jul 20, 12:47 PM EDT	Severe Thunderstorm Warning	RNK	Surry, Yadkin	43 min
Jul 19, 8:09 PM EDT	Flash Flood Warning	RNK	Greenbrier, Summers	3 hr
Jul 20, 12:14 PM EDT	Special Weather Statement	RNK	Monroe	61 min
Jul 20, 7:35 PM EDT	Special Weather Statement	RNK	Greenbrier	55 min

Nearby

Special Weather Statements in North Carolina, 2013 Every special weather statement in 2013

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.