Alert archive / Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

June 18, 2012Patrick County, Virginia

NWS Blacksburg, VA issued this special weather statement at Jun 18, 2012, 2:10 PM EDT for Patrick County, Virginia. It was in force for 50 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: Jun 18, 2012, 2:10 PM EDT (18:10 UTC)
Expired: Jun 18, 2012, 3:00 PM EDT
In force: 50 min
Issued by: NWS Blacksburg, VA

County Patrick County, VA

The radar

The Roanoke radar (KFCX), 32 km from the middle of the area, began a volume at 18:12 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, 6.2 hours before the alert went out and 79 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1209 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 109 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 Jun 18, 1:40 PM EDT, 30 minutes earlier.

Area forecast discussion, Jun 18, 1:40 PM EDT, 30 minutes before

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Hazardous weather outlook, Jun 18, 4:50 AM EDT, 9 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
450 AM EDT MON JUN 18 2012

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-190900-
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-
450 AM EDT MON JUN 18 2012

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.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jun 18, 1:12 PM EDT, 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
112 PM EDT MON JUN 18 2012

VAZ014-018-022-023-033-034-181800-
BOTETOURT VA-FRANKLIN VA-CRAIG VA-BEDFORD VA-ROANOKE VA-MONTGOMERY
VA-
112 PM EDT MON JUN 18 2012

...THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A SPECIAL
WEATHER STATEMENT FOR
SOUTHWESTERN BOTETOURT...NORTHWESTERN FRANKLIN...
SOUTHEASTERN CRAIG...WEST CENTRAL BEDFORD...
ROANOKE AND NORTHEASTERN MONTGOMERY COUNTIES
UNTIL 200 PM EDT...

AT 108 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS
TRACKING A LINE OF STRONG THUNDERSTORMS ...AND MOVING SOUTHEAST AT
25 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 40 MPH IS EXPECTED WITH
THESE STORMS. VERY HEAVY RAIN IS FALLING...AND WILL CAUSE WATER TO
POND ON ROADWAYS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL
STREAMS. EXPECT FREQUENT CLOUD TO GROUND LIGHTNING. DO NOT STAY IN
THE OPEN OR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS.
MOVE INSIDE A STURDY SHELTER.

LOCATIONS IMPACTED INCLUDE...
ROANOKE...SALEM CITY...BENT MOUNTAIN...TROUTVILLE...BOONES
MILL...AND CAVE SPRING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

&&

LAT...LON 3727 7958 3699 8001 3721 8019 3722 8018
      3729 8024 3731 8025 3738 8016 3738 8014
      3748 8000
TIME...MOT...LOC 1708Z 308DEG 22KT 3742 8002 3729 8021

16

Special weather statement, Jun 18, 2:10 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
Jun 18, 1:12 PM EDT	Special Weather Statement	RNK	Roanoke, City of Roanoke, City of Salem	48 min
Jun 18, 1:36 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Franklin, Roanoke, City of Roanoke, City of Salem	39 min
Jun 18, 2:30 PM EDT	Special Weather Statement	RNK	Franklin	45 min
Jun 18, 3:24 PM EDT	Special Weather Statement	RNK	City of Martinsville	51 min
Jun 18, 3:47 PM EDT	Special Weather Statement	RNK	Floyd	43 min
Jun 18, 3:58 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Pittsylvania	62 min
Jun 18, 4:40 PM EDT	Special Weather Statement	RNK	Patrick	50 min
Jun 18, 5:05 PM EDT	Special Weather Statement	RNK	City of Galax	40 min
Jun 18, 5:35 PM EDT	Special Weather Statement	RNK	City of Danville	40 min
Jun 18, 5:57 PM EDT	Special Weather Statement	RNK	Carroll	48 min
Jun 18, 6:59 PM EDT	Special Weather Statement	RNK	Carroll, Wythe, City of Galax	46 min
Jun 18, 6:12 PM EDT	Severe Thunderstorm Warning	RNK	Wilkes	63 min
Jun 18, 6:52 PM EDT	Areal Flood Warning	RNK	Wilkes	2 hr
Jun 17, 10:45 PM EDT	Special Weather Statement	RNK	Greenbrier	45 min
Jun 17, 11:30 PM EDT	Special Weather Statement	RNK	Greenbrier	45 min

Nearby

Special Weather Statements in Virginia, 2012 Every special weather statement in 2012

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.