Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

April 17, 2012Yadkin County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Apr 17, 2012, 6:00 PM EDT for Yadkin County, North Carolina. It was in force for 15 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: Apr 17, 2012, 6:00 PM EDT (22:00 UTC)
Expired: Apr 17, 2012, 6:15 PM EDT
In force: 15 min
Issued by: NWS Blacksburg, VA

County Yadkin County, NC

The radar

The Roanoke radar (KFCX), 99 km from the middle of the area, began a volume at 22:00 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, 10.0 hours before the alert went out and 53 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: 1381 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -86 m²/s²
0-3 km storm-relative helicity: -34 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 Apr 17, 5:20 PM EDT, 40 minutes earlier.

Area forecast discussion, Apr 17, 5:20 PM EDT, 40 minutes before

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Hazardous weather outlook, Apr 17, 6:04 AM EDT, 11 hours 56 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
604 AM EDT TUE APR 17 2012

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-181015-
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-
604 AM EDT TUE APR 17 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.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Apr 17, 4:19 PM EDT, 1 hour 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
419 PM EDT TUE APR 17 2012

NCZ003-VAZ016-017-032-172045-
CARROLL VA-FLOYD VA-PATRICK VA-SURRY NC-
419 PM EDT TUE APR 17 2012

...SHOWERS WITH HEAVY RAIN WILL AFFECT CARROLL...FLOYD...PATRICK AND
SURRY COUNTIES...

AT 417 PM EDT...SHOWERS WITH HEAVY RAIN WERE ALONG A LINE FROM 7
MILES NORTHEAST OF FANCY GAP TO MOUNT AIRY...MOVING NORTHEAST AT 25
MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THESE SHOWERS. VERY HEAVY RAIN
WILL FALL FROM THESE SHOWERS...AND WILL CAUSE WATER TO POND ON ROADS
AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

THESE SHOWERS WILL BE NEAR GROUNDHOG MOUNTAIN AROUND 430 PM AND MABRY
MILL AROUND 445 PM.

LAT...LON 3648 8068 3676 8066 3688 8033 3656 8035
      3655 8040 3655 8044 3654 8044

DS

Special weather statement, Apr 17, 4:21 PM EDT, 1 hour 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
421 PM EDT TUE APR 17 2012

NCZ018-172045-
WATAUGA NC-
421 PM EDT TUE APR 17 2012

...A STRONG THUNDERSTORM WILL AFFECT WATAUGA COUNTY...

AT 417 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER BLOWING
ROCK...MOVING NORTHEAST AT 20 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 AHO AROUND 430 PM...RUTHERWOOD AROUND 440 PM
AND DEEP GAP AROUND 445 PM.

LAT...LON 3614 8182 3632 8161 3628 8157 3628 8155
      3624 8147 3620 8146 3616 8148 3611 8156
      3612 8171 3611 8181 3611 8182

DS

Special weather statement, Apr 17, 4:48 PM EDT, 1 hour 12 minutes before

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Special weather statement, Apr 17, 5:11 PM EDT, 49 minutes before

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Special weather statement, Apr 17, 5:46 PM EDT, 14 minutes before

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Special weather statement, Apr 17, 6:00 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
Apr 17, 3:19 PM EDT	Special Weather Statement	RNK	Carroll, Grayson, Wythe, City of Galax	26 min
Apr 17, 3:49 PM EDT	Special Weather Statement	RNK	Carroll	26 min
Apr 17, 4:16 PM EDT	Areal Flood Advisory	RNK	Grayson, Smyth	16 days
Apr 17, 4:19 PM EDT	Special Weather Statement	RNK	Patrick	26 min
Apr 17, 3:55 PM EDT	Special Weather Statement	RNK	Wilkes	35 min
Apr 17, 4:21 PM EDT	Special Weather Statement	RNK	Watauga	24 min
Apr 17, 4:48 PM EDT	Special Weather Statement	RNK	Caldwell	27 min
Apr 17, 5:11 PM EDT	Special Weather Statement	RNK	Wilkes	34 min
Apr 17, 5:46 PM EDT	Special Weather Statement	RNK	Yadkin	29 min
Apr 17, 6:16 PM EDT	Special Weather Statement	RNK	Yadkin	59 min
Apr 17, 6:43 PM EDT	Special Weather Statement	RNK	Yadkin	32 min
Apr 17, 7:25 PM EDT	Special Weather Statement	RNK	Stokes	50 min

Nearby

Special Weather Statements in North Carolina, 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.