Alert archive / West Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

July 10, 2012Greenbrier County, West Virginia

NWS Blacksburg, VA issued this special weather statement at Jul 10, 2012, 8:40 PM EDT for Greenbrier County, West Virginia. It was in force for 65 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 10, 2012, 8:40 PM EDT (00:40 UTC)
Expired: Jul 10, 2012, 9:45 PM EDT
In force: 65 min
Issued by: NWS Blacksburg, VA

County Greenbrier County, WV

The radar

The Charleston,WV radar (KRLX), 98 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

Roanoke, VA (KRNK), launched 00:00Z, 0.7 hours before the alert went out and 135 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: 55 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1201 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -40 m²/s²
0-3 km storm-relative helicity: -32 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 10, 8:00 PM EDT, 40 minutes earlier.

Area forecast discussion, Jul 10, 8:00 PM EDT, 40 minutes before

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Hazardous weather outlook, Jul 10, 4:01 PM EDT, 4 hours 39 minutes before

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In the hours before

Special weather statement, Jul 10, 8:40 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
840 PM EDT TUE JUL 10 2012

WVZ045-110145-
GREENBRIER WV-
840 PM EDT TUE JUL 10 2012

...A STRONG THUNDERSTORM WILL AFFECT WESTERN GREENBRIER COUNTY...

AT 837 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER RUPERT...
MOVING WEST AT 5 MPH.

WIND GUSTS TO 30 MPH AND PEA-SIZED HAIL 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.

THIS STORM WILL BE NEAR RUPERT AROUND 845 PM AND RAINELLE AROUND 930
PM.

LAT...LON 3798 8049 3782 8053 3786 8079 3787 8080
      3788 8076 3794 8081 3795 8081 3798 8078
      3799 8079 3803 8080

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 10:59 PM EDT	Special Weather Statement	RNK	City of Covington	61 min
Jul 11, 1:04 PM EDT	Flash Flood Watch	RNK	Grayson, Smyth, Tazewell	9 hr
Jul 11, 4:16 PM EDT	Special Weather Statement	RNK	Halifax, City of Danville, City of Martinsville	59 min
Jul 11, 4:58 PM EDT	Special Weather Statement	RNK	Pittsylvania	32 min
Jul 11, 5:52 PM EDT	Special Weather Statement	RNK	Franklin, Henry, Patrick, City of Martinsville	53 min
Jul 11, 1:13 PM EDT	Areal Flood Advisory	RNK	Ashe, Watauga	6 hr
Jul 10, 9:33 PM EDT	Areal Flood Advisory	RNK	Greenbrier	117 min

Nearby

Special Weather Statements in West 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.