Alert archive / North Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 130, NWS Blacksburg, VA

June 13, 2010Caswell County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 13, 2010, 3:39 PM EDT for Caswell County, North Carolina. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 13, 2010, 3:39 PM EDT (19:39 UTC)
Expired: Jun 13, 2010, 4:02 PM EDT
In force: 23 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

County Caswell County, NC

The radar

The Roanoke radar (KFCX), 109 km from the middle of the area, began a volume at 19:38 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, 7.7 hours before the alert went out and 91 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: 111 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 925 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 13, 3:35 PM EDT, 4 minutes earlier.

Area forecast discussion, Jun 13, 3:35 PM EDT, 4 minutes before

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Hazardous weather outlook, Jun 13, 11:47 AM EDT, 3 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
1147 AM EDT SUN JUN 13 2010

VAZ007-009>020-WVZ042>045-141600-
TAZEWELL-SMYTH-BLAND-GILES-WYTHE-PULASKI-MONTGOMERY-GRAYSON-CARROLL-
FLOYD-CRAIG-ALLEGHANY VA-BATH-MERCER-SUMMERS-MONROE-GREENBRIER-
1147 AM EDT SUN JUN 13 2010

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA...WEST
CENTRAL 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.

   FLASH FLOOD WATCH.

NUMEROUS THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT.
SOME STORMS MAY HAVE VERY HEAVY RAIN. TRAINING OF THUNDERSTORMS
WITH HEAVY RAIN OVER THE SAME LOCATIONS WILL LEAD TO FLOODING
PROBLEMS. A FEW OF THESE STORMS MAY BECOME SEVERE AND COULD
PRODUCE DAMAGING WIND GUSTS IN ADDITION TO HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ001-002-018-VAZ022>024-141600-
ASHE-ALLEGHANY NC-WATAUGA-ROANOKE-BOTETOURT-ROCKBRIDGE-
1147 AM EDT SUN JUN 13 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST NORTH CAROLINA AND
WEST CENTRAL VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NUMEROUS THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT.
SOME STORMS MAY HAVE VERY HEAVY RAIN. TRAINING OF THUNDERSTORMS
WITH HEAVY RAIN OVER THE SAME LOCATIONS MAY LEAD TO FLOODING
PROBLEMS. A FEW OF THESE STORMS MAY BECOME SEVERE AND COULD PRODUCE
DAMAGING WIND GUSTS IN ADDITION TO HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ003>006-019-020-VAZ032>035-043>047-058-059-141600-
SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-PATRICK-FRANKLIN-
BEDFORD-AMHERST-HENRY-PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-
HALIFAX-CHARLOTTE-
1147 AM EDT SUN JUN 13 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH
CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA...SOUTH
CENTRAL VIRGINIA...SOUTHWEST VIRGINIA AND WEST CENTRAL VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT.
SOME THUNDERSTORMS MAY PRODUCE HEAVY RAIN. ANY TRAINING OF
THUNDERSTORMS WITH HEAVY RAIN OVER THE SAME LOCATIONS COULD LEAD
TO LOCAL FLOODING PROBLEMS. A FEW OF THESE STORMS MAY BECOME
SEVERE AND MAY BE CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND
HAIL IN ADDITION TO HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jun 13, 2:49 PM EDT, 50 minutes before

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Special weather statement, Jun 13, 2:52 PM EDT, 47 minutes before

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Special weather statement, Jun 13, 3:02 PM EDT, 37 minutes before

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Special weather statement, Jun 13, 3:32 PM EDT, 7 minutes before

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Local storm report, Jun 13, 3:37 PM EDT, 2 minutes before

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Local storm report, Jun 13, 3:38 PM EDT, 1 minute 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 12, 8:47 PM EDT	Special Weather Statement	RNK	Smyth, Wythe	28 min
Jun 12, 9:10 PM EDT	Flash Flood Warning	RNK	Bland, Smyth, Wythe	6 hr
Jun 12, 9:26 PM EDT	Special Weather Statement	RNK	Craig	64 min
Jun 12, 9:41 PM EDT	Special Weather Statement	RNK	Carroll, Grayson, City of Galax	34 min
Jun 12, 11:08 PM EDT	Flash Flood Warning	RNK	Bland	6 hr
Jun 12, 11:23 PM EDT	Special Weather Statement	RNK	Bland	67 min
Jun 13, 1:58 AM EDT	Flash Flood Warning	RNK	Tazewell	6 hr
Jun 13, 7:41 AM EDT	Flash Flood Warning	RNK	Tazewell	4 hr
Jun 13, 11:24 AM EDT	Flash Flood Watch	RNK	Alleghany, Bath, Bland, Carroll, Craig, Floyd and 10 more	9 hr
Jun 13, 11:33 AM EDT	Flash Flood Warning	RNK	Tazewell	6 hr
Jun 13, 12:17 PM EDT	Flash Flood Warning	RNK	Bland, Smyth, Wythe	6 hr
Jun 13, 2:17 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Patrick, Pittsylvania, City of Martinsville	58 min
Jun 13, 3:02 PM EDT	Special Weather Statement	RNK	City of Danville	28 min
Jun 13, 4:08 PM EDT	Special Weather Statement	RNK	Smyth	37 min
Jun 13, 4:10 PM EDT	Special Weather Statement	RNK	Halifax	35 min
Jun 13, 6:15 PM EDT	Areal Flood Warning	RNK	Smyth	3 hr
Jun 12, 10:32 PM EDT	Special Weather Statement	RNK	Alleghany, Ashe, Surry, Wilkes, Yadkin	58 min
Jun 12, 11:31 PM EDT	Special Weather Statement	RNK	Stokes	59 min
Jun 12, 11:50 PM EDT	Special Weather Statement	RNK	Rockingham	55 min
Jun 13, 1:45 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	60 min
Jun 13, 2:41 PM EDT	Severe Thunderstorm Warning	RNK	Yadkin	48 min
Jun 13, 2:49 PM EDT	Special Weather Statement	RNK	Watauga	26 min
Jun 13, 2:52 PM EDT	Special Weather Statement	RNK	Rockingham	38 min
Jun 13, 3:32 PM EDT	Special Weather Statement	RNK	Caswell	28 min
Jun 13, 4:58 AM EDT	Flash Flood Warning	RNK	Mercer	6 hr

Nearby

Severe Thunderstorm Warnings in North Carolina, 2010 Every severe thunderstorm warning in 2010

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.