Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

July 7, 2011Rockingham County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Jul 7, 2011, 8:43 PM EDT for Rockingham County, North Carolina. It was in force for 32 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 7, 2011, 8:43 PM EDT (00:43 UTC)
Expired: Jul 7, 2011, 9:15 PM EDT
In force: 32 min
Issued by: NWS Blacksburg, VA

County Rockingham County, NC

The radar

The Roanoke radar (KFCX), 75 km from the middle of the area, began a volume at 00:43 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 00:00Z, 0.7 hours before the alert went out and 47 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: 1612 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 8 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 7, 8:02 PM EDT, 41 minutes earlier.

Area forecast discussion, Jul 7, 8:02 PM EDT, 41 minutes before

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Hazardous weather outlook, Jul 7, 3:28 PM EDT, 5 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
328 PM EDT THU JUL 7 2011

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-081100-
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-
328 PM EDT THU JUL 7 2011

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.

ISOLATED STRONG TO SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS...LARGE HAIL AND HEAVY RAIN ARE POSSIBLE THIS
AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FRIDAY AFTERNOON
AND EVENING. DAMAGING WINDS AND LARGE HAIL ARE THE PRIMARY
THREATS FROM ANY SEVERE STORMS.

ALSO...MOST THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN. LOCALIZED
FLASH FLOODING IS POSSIBLE ON FRIDAY AND FRIDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED ON FRIDAY AFTERNOON.

In the hours before

Special weather statement, Jul 7, 7:36 PM EDT, 1 hour 7 minutes before

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Local storm report, Jul 7, 7:50 PM EDT, 53 minutes before

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Local storm report, Jul 7, 8:13 PM EDT, 30 minutes before

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Local storm report, Jul 7, 8:30 PM EDT, 13 minutes before

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Local storm report, Jul 7, 8:37 PM EDT, 6 minutes before

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Special weather statement, Jul 7, 8:43 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 8, 3:58 AM EDT	Flash Flood Watch	RNK	Alleghany, Amherst, Appomattox, Bath, Bedford, Bland and 25 more	19 hr
Jul 8, 1:13 PM EDT	Special Weather Statement	RNK	Franklin	62 min
Jul 8, 2:07 PM EDT	Special Weather Statement	RNK	Franklin	23 min
Jul 8, 2:33 PM EDT	Special Weather Statement	RNK	Campbell	27 min
Jul 8, 3:11 PM EDT	Special Weather Statement	RNK	Campbell	34 min
Jul 8, 3:34 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Campbell, Charlotte	23 min
Jul 8, 4:37 PM EDT	Special Weather Statement	RNK	Bedford, Franklin	53 min
Jul 8, 5:07 PM EDT	Special Weather Statement	RNK	Charlotte	53 min
Jul 8, 5:31 PM EDT	Special Weather Statement	RNK	Fluvanna	14 min
Jul 8, 5:33 PM EDT	Special Weather Statement	RNK	City of Danville	57 min
Jul 8, 5:44 PM EDT	Special Weather Statement	RNK	Botetourt, Craig	61 min
Jul 8, 5:55 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Botetourt, Craig, Roanoke	30 min
Jul 8, 6:06 PM EDT	Severe Thunderstorm Warning	RNK	Halifax, Pittsylvania, City of Danville	54 min
Jul 8, 6:12 PM EDT	Special Weather Statement	RNK	Cumberland	63 min
Jul 8, 7:07 PM EDT	Special Weather Statement	RNK	Charlotte	53 min
Jul 7, 9:00 PM EDT	Flash Flood Warning	RNK	Rockingham	38 min

Nearby

Special Weather Statements in North Carolina, 2011 Every special weather statement in 2011

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.