Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

April 4, 2012Yadkin County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Apr 4, 2012, 2:42 PM EDT for Yadkin County, North Carolina. It was in force for 63 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 4, 2012, 2:42 PM EDT (18:42 UTC)
Expired: Apr 4, 2012, 3:45 PM EDT
In force: 63 min
Issued by: NWS Blacksburg, VA

County Yadkin County, NC

The radar

The Roanoke radar (KFCX), 92 km from the middle of the area, began a volume at 18:42 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, 6.7 hours before the alert went out and 51 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: 94 J/kg
Mixed-layer CIN: -189 J/kg
Mixed-layer LCL: 1161 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 4, 1:45 PM EDT, 57 minutes earlier.

Area forecast discussion, Apr 4, 1:45 PM EDT, 57 minutes before

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Hazardous weather outlook, Apr 4, 4:12 AM EDT, 10 hours 30 minutes before

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In the hours before

Special weather statement, Apr 4, 2:01 PM EDT, 41 minutes before

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Special weather statement, Apr 4, 2:20 PM EDT, 22 minutes before

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Local storm report, Apr 4, 2:22 PM EDT, 20 minutes before

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Special weather statement, Apr 4, 2:29 PM EDT, 13 minutes before

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Special weather statement, Apr 4, 2:34 PM EDT, 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
234 PM EDT WED APR 4 2012

NCZ005-006-041930-
CASWELL NC-ROCKINGHAM NC-
234 PM EDT WED APR 4 2012

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

AT 228 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER WENTWORTH...
MOVING EAST AT 15 MPH.

WIND GUSTS TO 40 MPH AND HAIL UP TO DIME SIZE 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 DRAPER AROUND 240 PM...HARRISONS
CROSSROADS...AND MONROETON AROUND 245 PM...OREGON HILL AROUND 250
PM...REIDSVILLE AROUND 255 PM...LAWSONVILLE...AND RUFFIN AROUND 310
PM...LAWSONVILLE AND AND RUFFIN AROUND 315 PM.

LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.

LAT...LON 3624 7976 3633 8003 3654 7987 3647 7913
      3629 7914 3624 7916

KK

Special weather statement, Apr 4, 2:42 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
242 PM EDT WED APR 4 2012

NCZ003>005-020-041945-
ROCKINGHAM NC-STOKES NC-SURRY NC-YADKIN NC-
242 PM EDT WED APR 4 2012

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

AT 238 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES SOUTHWEST
OF PILOT MOUNTAIN...MOVING SOUTHEAST AT 15 MPH.

WIND GUSTS TO 40 MPH AND HAIL UP TO DIME SIZE 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 PILOT MOUNTAIN STATE PARK AROUND 250 PM...
PINNACLE AROUND 300 PM...ENON AROUND 310 PM...KING AROUND 315 PM...
GERMANTON AROUND 340 PM AND WALNUT COVE AROUND 345 PM.

LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.

LAT...LON 3615 8070 3646 8055 3625 7978 3626 8044
      3616 8043 3611 8046 3610 8050

KK

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 4:02 AM EDT	Flash Flood Watch	RNK	Bland, Smyth, Tazewell, Wythe	17 hr
Apr 4, 2:01 PM EDT	Special Weather Statement	RNK	Henry	14 min
Apr 4, 2:20 PM EDT	Special Weather Statement	RNK	Bland	55 min
Apr 4, 2:29 PM EDT	Special Weather Statement	RNK	Giles, Montgomery	61 min
Apr 4, 3:40 PM EDT	Special Weather Statement	RNK	Floyd	65 min
Apr 4, 3:54 PM EDT	Special Weather Statement	RNK	Giles	66 min
Apr 4, 3:55 PM EDT	Special Weather Statement	RNK	Montgomery, City of Radford	65 min
Apr 4, 4:35 PM EDT	Special Weather Statement	RNK	Craig	55 min
Apr 4, 5:15 PM EDT	Special Weather Statement	RNK	Pittsylvania	60 min
Apr 4, 5:44 PM EDT	Special Weather Statement	RNK	City of Danville	61 min
Apr 4, 6:18 PM EDT	Special Weather Statement	RNK	Halifax	57 min
Apr 4, 2:34 PM EDT	Special Weather Statement	RNK	Caswell, Rockingham	56 min
Apr 4, 4:21 PM EDT	Special Weather Statement	RNK	Caswell	54 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.