Alert archive / West Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

July 19, 2012Tazewell County, Virginia; Greenbrier County, Mercer County, Summers County, West Virginia

NWS Blacksburg, VA issued this special weather statement at Jul 19, 2012, 4:48 PM EDT for Tazewell County, Virginia; Greenbrier County, Mercer County, Summers County, West Virginia. It was in force for 57 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 19, 2012, 4:48 PM EDT (20:48 UTC)
Expired: Jul 19, 2012, 5:45 PM EDT
In force: 57 min
Issued by: NWS Blacksburg, VA

Counties Tazewell County, VA, Greenbrier County, WV, Mercer County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 89 km from the middle of the area, began a volume at 20:51 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 12:00Z, 8.8 hours before the alert went out and 138 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: 102 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1086 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: 10 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 19, 3:31 PM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Jul 19, 3:31 PM EDT, 1 hour 17 minutes before

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Hazardous weather outlook, Jul 19, 3:46 PM EDT, 1 hour 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
346 PM EDT THU JUL 19 2012

VAZ007-009>012-015-WVZ042>044-202000-
TAZEWELL-SMYTH-BLAND-GILES-WYTHE-GRAYSON-MERCER-SUMMERS-MONROE-
346 PM EDT THU JUL 19 2012

...SEVERE THUNDERSTORM WATCH 495 IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

  SEVERE THUNDERSTORM WATCH.

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

THUNDERSTORMS WILL BE STRONG TO POSSIBLY SEVERE FRIDAY AND SATURDAY
AFTERNOON AND EVENING. THE MAIN THREAT WILL BE DAMAGING WINDS AND
TORRENTIAL DOWNPOURS WHICH COULD LEAD TO FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ001>006-018>020-VAZ013-014-016>020-022>024-032>035-043>047-058-
059-WVZ045-202000-
ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES-
YADKIN-PULASKI-MONTGOMERY-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-
ROANOKE-BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-
PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-
GREENBRIER-
346 PM EDT THU JUL 19 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...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL BE STRONG TO POSSIBLY SEVERE INTO THIS
EVENING. THE MAIN THREAT WILL BE DAMAGING WINDS AND TORRENTIAL
DOWNPOURS WHICH COULD LEAD TO FLOODING.

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

THUNDERSTORMS WILL BE STRONG TO POSSIBLY SEVERE FRIDAY AND SATURDAY
AFTERNOON AND EVENING. THE MAIN THREAT WILL BE DAMAGING WINDS AND
TORRENTIAL DOWNPOURS WHICH COULD LEAD TO FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

RCS

In the hours before

Special weather statement, Jul 19, 1:03 PM EDT, 3 hours 45 minutes before

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Special weather statement, Jul 19, 2:28 PM EDT, 2 hours 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
228 PM EDT THU JUL 19 2012

NCZ004-005-191915-
ROCKINGHAM NC-STOKES NC-
228 PM EDT THU JUL 19 2012

...A STRONG THUNDERSTORM WILL AFFECT ROCKINGHAM AND STOKES
COUNTIES...

AT 226 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES SOUTHWEST
OF SANDY RIDGE...MOVING EAST AT 15 MPH.

VERY HEAVY RAIN...AS MUCH AS AN INCH AND A HALF DURING A SHORT
PERIOD OF TIME...WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.
EXPECT FREQUENT CLOUD TO GROUND LIGHTNING FROM THIS STORM AS WELL.
DO NOT STAY IN THE OPEN OR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS... MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.

THIS STORM WILL BE NEAR PRESTONVILLE AROUND 235 PM...DILLARD AROUND
240 PM...AYERSVILLE AROUND 255 PM...MADISON AROUND 305 PM...MAYODAN
AROUND 310 PM AND STONEVILLE AROUND 315 PM.

LAT...LON 3636 8026 3654 8028 3654 7986 3633 7986

16

Special weather statement, Jul 19, 4:01 PM EDT, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
401 PM EDT THU JUL 19 2012

NCZ006-VAZ058-192045-
CASWELL NC-HALIFAX VA-
401 PM EDT THU JUL 19 2012

...A STRONG THUNDERSTORM WILL AFFECT CASWELL AND HALIFAX COUNTIES...

AT 400 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES NORTHEAST
OF YANCEYVILLE...MOVING EAST AT 5 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS STORM. VERY HEAVY RAIN
WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND
QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. EXPECT FREQUENT
CLOUD TO GROUND LIGHTNING FROM THIS STORM. DO NOT STAY IN THE OPEN OR
SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN
A THUNDERSTORM APPROACHES.

THIS STORM WILL BE NEAR MILTON AROUND 430 PM...MILTON AROUND 435 PM
AND SEMORA AROUND 445 PM.

LAT...LON 3639 7936 3654 7939 3654 7922 3658 7921
      3662 7898 3654 7895 3653 7913 3638 7914

16

Special weather statement, Jul 19, 4:48 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
448 PM EDT THU JUL 19 2012

VAZ007-WVZ042-043-045-192145-
GREENBRIER WV-MERCER WV-SUMMERS WV-TAZEWELL VA-
448 PM EDT THU JUL 19 2012

...A LINE OF THUNDERSTORMS WILL AFFECT GREENBRIER...MERCER...SUMMERS
AND TAZEWELL COUNTIES...

AT 438 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 21 MILES
NORTHWEST OF SUMMERSVILLE TO 10 MILES EAST OF HURLEY...MOVING
SOUTHEAST AT 20 MPH. THIS LINE OF THUNDERSTORMS WILL ENTER WESTERN
PORTIONS OF GREENBRIER...MERCER...SUMMERS AND TAZEWELL COUNTIES
BETWEEN 530 PM AND 600 PM. WIND GUSTS TO 40 MPH...AND FREQUENT
LIGHTNING ARE EXPECTED WITH STORMS. PERIODS OF HEAVY RAIN ARE ALSO
EXPECTED...WHICH MAY CAUSE WATER TO POND ON ROADS AND QUICKLY FILL
ROADSIDE DITCHES AND SMALL STREAMS. THESE STORMS WILL BE MONITORED
CLOSELY FOR ANY SIGNS OF INTENSIFICATION.

LAT...LON 3805 8026 3806 7996 3769 8029 3773 8066
      3735 8085 3722 8127 3708 8128 3693 8167
      3697 8179 3715 8190 3725 8174 3721 8156
      3728 8142 3758 8120 3770 8090 3782 8094
      3788 8076 3811 8088 3809 8071 3827 8043

16

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 8:42 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte, Halifax	63 min
Jul 19, 1:03 PM EDT	Special Weather Statement	RNK	Henry	42 min
Jul 19, 5:41 PM EDT	Special Weather Statement	RNK	Tazewell	49 min
Jul 19, 6:05 PM EDT	Areal Flood Advisory	RNK	Tazewell	3 hr
Jul 19, 6:37 PM EDT	Special Weather Statement	RNK	Rockbridge	23 min
Jul 19, 2:28 PM EDT	Special Weather Statement	RNK	Stokes	47 min
Jul 19, 4:01 PM EDT	Special Weather Statement	RNK	Caswell	44 min

Nearby

Special Weather Statements in West Virginia, 2012 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.