Alert archive / Virginia / Special Weather Statements in 2016

Special Weather Statement, NWS Blacksburg, VA

August 16, 2016Appomattox County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 16, 2016, 3:49 PM EDT for Appomattox County, Virginia. It was in force for 56 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: Aug 16, 2016, 3:49 PM EDT (19:49 UTC)
Expired: Aug 16, 2016, 4:45 PM EDT
In force: 56 min
Issued by: NWS Blacksburg, VA

County Appomattox County, VA

The radar

The Roanoke radar (KFCX), 133 km from the middle of the area, began a volume at 19:50 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, 7.8 hours before the alert went out and 63 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: 308 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 940 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

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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 Aug 16, 2:08 PM EDT, 1 hour 41 minutes earlier.

Area forecast discussion, Aug 16, 2:08 PM EDT, 1 hour 41 minutes before

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Hazardous weather outlook, Aug 16, 4:13 AM EDT, 11 hours 36 minutes before

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In the hours before

Local storm report, Aug 16, 10:34 AM EDT, 5 hours 15 minutes before

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Special weather statement, Aug 16, 1:23 PM EDT, 2 hours 26 minutes before

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Special weather statement, Aug 16, 1:46 PM EDT, 2 hours 3 minutes before

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Special weather statement, Aug 16, 2:52 PM EDT, 57 minutes before

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Special weather statement, Aug 16, 3:24 PM EDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
324 PM EDT TUE AUG 16 2016

VAZ045-162015-
CAMPBELL-
324 PM EDT TUE AUG 16 2016

...A STRONG THUNDERSTORM WILL AFFECT CAMPBELL COUNTY...

AT 321 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR EVINGTON...
MOVING EAST AT 20 MPH.

FREQUENT CLOUD-TO-GROUND LIGHTNING AND VERY HEAVY RAINFALL CAN BE
EXPECTED WITH THIS THUNDERSTORM. WINDS IN EXCESS OF 30 MPH ARE
POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CONCORD...
RUSTBURG...
BOCOCK...
SPRING MILLS...
AND MIKE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 3719 7883 3718 7921 3728 7928 3739 7908
      3739 7906 3740 7906 3743 7902 3732 7895
      3729 7895 3728 7893 3725 7892 3725 7889
      3724 7886 3721 7886 3720 7882
TIME...MOT...LOC 1921Z 263DEG 18KT 3720 7924

RAB

Special weather statement, Aug 16, 3:49 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
349 PM EDT TUE AUG 16 2016

VAZ046-162045-
APPOMATTOX-
349 PM EDT TUE AUG 16 2016

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN APPOMATTOX COUNTY...

AT 348 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER STONEWALL...
MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
APPOMATTOX...
BENT CREEK...
OAKVILLE...
STONEWALL...
AND APPOMATTOX NATIONAL HISTORIC PARK.

OCCASIONAL CLOUD-TO-GROUND LIGHTNING AND BRIEF VERY HEAVY
RAINFALL CAN BE EXPECTED WITH THIS THUNDERSTORM. WIND GUSTS TO 30
MPH WILL ALSO BE POSSIBLE.

LAT...LON 3729 7894 3742 7902 3744 7901 3747 7898
      3749 7894 3750 7895 3750 7892 3752 7889
      3753 7889 3753 7888 3754 7886 3754 7883
      3755 7882 3745 7870 3743 7868 3742 7865
TIME...MOT...LOC 1948Z 232DEG 27KT 3740 7896

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 8:03 PM EDT	Special Weather Statement	RNK	Rockbridge, City of Buena Vista, City of Lexington	27 min
Aug 15, 8:12 PM EDT	Special Weather Statement	RNK	Prince Edward	33 min
Aug 15, 8:39 PM EDT	Special Weather Statement	RNK	Buckingham	36 min
Aug 15, 10:29 PM EDT	Special Weather Statement	RNK	Buckingham	46 min
Aug 15, 11:16 PM EDT	Special Weather Statement	RNK	Cumberland	14 min
Aug 16, 1:23 PM EDT	Special Weather Statement	RNK	Franklin	52 min
Aug 16, 1:46 PM EDT	Special Weather Statement	RNK	Bedford	59 min
Aug 16, 2:52 PM EDT	Special Weather Statement	RNK	Bedford	53 min
Aug 16, 3:24 PM EDT	Special Weather Statement	RNK	Campbell	51 min
Aug 16, 5:16 PM EDT	Special Weather Statement	RNK	Bland	44 min
Aug 16, 5:37 PM EDT	Special Weather Statement	RNK	Giles	53 min
Aug 16, 5:59 PM EDT	Special Weather Statement	RNK	Giles	61 min
Aug 16, 6:55 PM EDT	Special Weather Statement	RNK	Smyth	35 min
Aug 16, 7:26 PM EDT	Special Weather Statement	RNK	Smyth	49 min
Aug 16, 7:37 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell, Wythe	68 min
Aug 16, 7:43 PM EDT	Special Weather Statement	RNK	Mercer	32 min

Nearby

Special Weather Statements in Virginia, 2016 Every special weather statement in 2016

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.