Alert archive / Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

May 21, 2012Pittsylvania County, City of Danville, Virginia

NWS Blacksburg, VA issued this special weather statement at May 21, 2012, 9:06 PM EDT for Pittsylvania County, City of Danville, Virginia. It was in force for 39 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: May 21, 2012, 9:06 PM EDT (01:06 UTC)
Expired: May 21, 2012, 9:45 PM EDT
In force: 39 min
Issued by: NWS Blacksburg, VA

Counties City of Danville, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 62 km from the middle of the area, began a volume at 01:09 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, 1.1 hours before the alert went out and 35 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: 103 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1206 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 73 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 May 21, 9:03 PM EDT, 3 minutes earlier.

Area forecast discussion, May 21, 9:03 PM EDT, 3 minutes before

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Hazardous weather outlook, May 21, 5:23 PM EDT, 3 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
523 PM EDT MON MAY 21 2012

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-222130-
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-
523 PM EDT MON MAY 21 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...TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS MAY PRODUCE ISOLATED HAIL...STRONG
WINDS AND LOCALLY HEAVY RAINFALL THIS EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE TUESDAY...AND
ESPECIALLY WEDNESDAY. THESE SHOWERS AND STORMS WILL BE SLOW MOVING
AND COULD BRING LOCALIZED FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, May 21, 6:21 PM EDT, 2 hours 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
621 PM EDT MON MAY 21 2012

NCZ020-212315-
YADKIN NC-
621 PM EDT MON MAY 21 2012

...A STRONG THUNDERSTORM WILL AFFECT YADKIN COUNTY...

AT 619 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR BROOKS
CROSSROADS...MOVING SOUTH AT 20 MPH.

THIS STORM WILL BE CAPABLE OF PRODUCING PEA-SIZED HAIL. EXPECT
FREQUENT CLOUD TO GROUND LIGHTNING FROM THIS STORM. DO NOT STAY IN
THE OPEN OR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES.

THIS STORM WILL BE NEAR LONE HICKORY AROUND 630 PM.

LAT...LON 3605 8070 3605 8087 3606 8088 3623 8088
      3624 8087 3624 8063 3604 8060 3604 8069

RAB

Special weather statement, May 21, 6:47 PM EDT, 2 hours 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
647 PM EDT MON MAY 21 2012

VAZ023-212345-
BOTETOURT VA-
647 PM EDT MON MAY 21 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN BOTETOURT COUNTY...

AT 644 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR EAGLE ROCK...
MOVING SOUTHEAST AT 5 MPH.

THIS STORM WILL PRODUCE PEA-SIZED HAIL. EXPECT FREQUENT CLOUD TO
GROUND LIGHTNING FROM THIS STORM. DO NOT STAY IN THE OPEN OR SEEK
SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A
THUNDERSTORM APPROACHES.

THIS STORM WILL BE NEAR SPRINGWOOD AROUND 745 PM.

LAT...LON 3776 7977 3767 7967 3766 7968 3761 7959
      3758 7958 3753 7950 3752 7951 3749 7957
      3745 7959 3745 7963 3748 7966 3746 7971
      3763 7992

RAB

Special weather statement, May 21, 7:06 PM EDT, 2 hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
706 PM EDT MON MAY 21 2012

VAZ022-220000-
ROANOKE VA-
706 PM EDT MON MAY 21 2012

...A STRONG THUNDERSTORM WILL AFFECT ROANOKE COUNTY AND ROANOKE
CITY...

AT 702 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR SALEM CITY...
MOVING EAST AT 5 MPH.

THIS STORM WILL BE CAPABLE OF PRODUCING PEA-SIZED HAIL. EXPECT
FREQUENT CLOUD TO GROUND LIGHTNING FROM THIS STORM. DO NOT STAY IN
THE OPEN OR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES.

THIS STORM WILL BE NEAR CAVE SPRING AROUND 715 PM...HOLLINS AROUND
720 PM...ROANOKE AROUND 730 PM...ROANOKE MOUNTAIN AROUND 750 PM AND
VINTON AROUND 800 PM.

LAT...LON 3733 7986 3730 7984 3726 7985 3723 7984
      3721 7986 3721 7989 3719 7989 3716 7992
      3722 8008 3739 8002

RAB

Local storm report, May 21, 8:00 PM EDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
800 PM EDT MON MAY 21 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0520 PM     HAIL             3 ESE HUFFMAN           37.33N 80.37W
05/21/2012  E1.00 INCH       MONTGOMERY         VA   PUBLIC

            CRAIG CREEK ROAD

&&

FISHER

Local storm report, May 21, 8:43 PM EDT, 23 minutes before

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Special weather statement, May 21, 9:06 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
May 21, 8:16 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Franklin, City of Roanoke	59 min
May 21, 10:42 PM EDT	Areal Flood Advisory	RNK	Amherst, Bath, Rockbridge, City of Buena Vista, City of Lexington	3 hr
May 21, 11:46 PM EDT	Special Weather Statement	RNK	Amherst	59 min
May 22, 3:27 AM EDT	Flash Flood Watch	RNK	Alleghany, Bath, Bland, Botetourt, Carroll, Craig and 17 more	18 hr
May 22, 3:32 PM EDT	Special Weather Statement	RNK	Rockbridge	58 min
May 22, 3:39 PM EDT	Special Weather Statement	RNK	Giles	66 min
May 22, 3:54 PM EDT	Special Weather Statement	RNK	Floyd, Patrick	66 min
May 22, 4:22 PM EDT	Special Weather Statement	RNK	Rockbridge, City of Buena Vista, City of Lexington	53 min
May 22, 4:57 PM EDT	Severe Thunderstorm Warning	RNK	Amherst	63 min
May 22, 5:18 PM EDT	Special Weather Statement	RNK	Floyd	42 min
May 22, 5:34 PM EDT	Special Weather Statement	RNK	Bedford	41 min
May 22, 6:01 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, City of Lynchburg	44 min
May 22, 6:30 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	60 min
May 22, 6:38 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell, City of Lynchburg	52 min
May 22, 7:18 PM EDT	Special Weather Statement	RNK	City of Danville	57 min
May 22, 7:54 PM EDT	Severe Thunderstorm Warning	RNK	Henry, City of Martinsville	36 min
May 22, 6:20 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham	40 min
May 22, 6:55 PM EDT	Special Weather Statement	RNK	Caswell	50 min
May 22, 7:11 PM EDT	Special Weather Statement	RNK	Surry, Yadkin	64 min
May 22, 1:28 PM EDT	Special Weather Statement	RNK	Summers	47 min
May 22, 3:10 PM EDT	Special Weather Statement	RNK	Monroe	65 min
May 22, 3:50 PM EDT	Special Weather Statement	RNK	Mercer	55 min
May 22, 4:33 PM EDT	Areal Flood Advisory	RNK	Mercer	117 min
May 22, 4:51 PM EDT	Flash Flood Warning	RNK	Mercer	3 hr

Nearby

Special Weather Statements in 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.