Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

April 9, 2011Rockingham County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Apr 9, 2011, 5:36 PM EDT for Rockingham County, North Carolina. It was in force for 24 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 9, 2011, 5:36 PM EDT (21:36 UTC)
Expired: Apr 9, 2011, 6:00 PM EDT
In force: 24 min
Issued by: NWS Blacksburg, VA

County Rockingham County, NC

The radar

The Roanoke radar (KFCX), 83 km from the middle of the area, began a volume at 21:40 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, 9.6 hours before the alert went out and 28 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: 704 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 256 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 9, 3:49 PM EDT, 1 hour 47 minutes earlier.

Area forecast discussion, Apr 9, 3:49 PM EDT, 1 hour 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BLACKSBURG VA
349 PM EDT SAT APR 9 2011

.SYNOPSIS...
A THUNDERSTORM COMPLEX WILL MOVE ACROSS THE MOUNTAINS OF SOUTHERN
WEST VIRGINIA...SOUTHWEST VIRGINIA...AND NORTHERN NORTH CAROLINA
THIS EVENING...AND THEN EXIT ACROSS THE NORTH CAROLINA PIEDMONT
OVERNIGHT. A STRONG COLD FRONT WILL THEN CROSS THE REGION LATE
MONDAY.

&&

.NEAR TERM /THROUGH SUNDAY/...
MCS ON OUR DOORSTEP WILL PASS ACROSS THE WESTERN CWA THIS
EVENING...AND EXIT ACROSS NC LATER TONIGHT. HAVE RAISED POPS ALL
AREAS FOR TONIGHT...FOLLOWING THE 12Z NAM AND/OR GFS. DO NOT THINK
EASTERN AREAS WILL EVER GET OUT OF THE STRATUS- JUST HAVE SHOWERS
REINFORCE IT. THIS STARTUS AND FOG MAY HANG ON THRU THE MORNING. I
ADJUSTED TEMPS DOWN SOME IN THE EATS SUNDAY...BUT THE STRONG SW
FLOW SHOULD SCOUR LOW CLOUDS OUT EVEN IN THE EAST.

&&

.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
MONDAY LOOKS TO BE A VERY WARM ONE WITH DEEP SOUTHERLY FLOW AHEAD OF
THE SIGNIFICANT TROUGH IN THE MIDWEST. H85 TEMPS PUSHING +16C BUT
INCREASING CLOUDS MAY MAINTAIN SOMEWHAT OF A LID ON TEMPS. STILL
EXPECTING MID-80S EAST AND NEAR 80 WEST. TIMING DIFFERENCES AND
IMPACTS OF THE STRONG COLD FRONTAL PASSAGE THE MAIN CONCERN IN SHORT
TERM. GFS IS FASTER WITH THE FRONT COMPARED TO THE NAM WHICH CLOSES
OFF UPPER SYSTEM OVER THE OH VALLEY WHILE THE GFS IS MORE
PROGRESSIVE IN ADVANCING A MORE OPEN WAVE STRUCTURE ACRS THE
NORTHERN MID-ATLANTIC. 00Z EURO SOMEWHAT OF A COMPROMISE. GENERAL
TIMING IS TO HAVE A BAND OF PRECIP WITH PSBL SIGNIFICANT STORMS FROM
LATE MONDAY INTO EARLY TUESDAY. SPC DOWNPLAYING THE SEVERE THREAT AT
THIS POINT BUT STILL HAS A SET TEXT..DUE PRIMARILY TO LIMITED
INSTABILITY BUT STILL EXPECTING DECENT SHEAR CAPABLE OF ORGANIZING
SOME STORMS. SPEED OF THIS SYSTEM SHOULD PRECLUDE WATER PROBLEMS BUT
BRIEF DOWNPOURS ARE OF COURSE POSSIBLE AS PWATS INCREASE TO 1.5
INCHES. FRONT IS WELL EAST OF THE CWA BY LATE MORNING WITH COLD AIR
ADVECTION AND STRONG NW BREEZES TUESDAY AS H85 TEMPS DROP OFF TO +2
TO +4C.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
HIGH PRESSURE DOMINATES THE MID-WEEK PERIOD WITH SLIGTLY ABOVE
SEASONAL TEMPS AND DRY CONDITIONS. ANOTHER STRONG FRONT AND UPPER
LEVEL SYSTEM APPROACHES EARLY IN THE WEEKEND. BASICALLY FOLLOWED HPC
GUIDANCE BUT THIS COULD BE A SIGNIFICANT SYSTEM.

&&

.AVIATION /20Z SATURDAY THROUGH THURSDAY/...
STRATUS PRODUCING IFR CIGS IS HANGING TOUGH EAST OF THE BLUE
RIDGE. THIS INCLUDESBCB...ROA...LYH AND DAN. THESE CIGS MAY
BRIEFLY RISE TO LOW END MVFR...BUT ARE EXPECTED TO DROP RIGHT BACK
DOWN AGAIN TONIGHT...WITH HIGH CONFIDENCE OF IFR CONDS...MODERATE
CONFIDENCE OF VLIFR CONDS. FURTHER WEST...NEARLY FULL DAY HEATING
HAS PRODUCED MODERATELY UNSTABLE CONDS AND A TORNADO WATCH HAS
BEEN ISSUED IN EFFECT THRU 900 PM. BLF AND LWB WILL LIKELY SEE A
TSTM...AND HAVE A CHC FOR STRONG WINDS AND LARGE HAIL. BCB HAS A
LOW CHC OF SEEING A STRONG TSTM. I EXPECT LWB TO DROP DOWN TO
VLIFR IN FOG...BLF MAY NOT DROP TO IFR.

LOW CIGS/VSBYS WILL RISE THROUGH THE MORNING HOURS SUNDAY. I
EXPECT MOST SITES TO BECOME VFR AROUND OR SHORTLY AFTER 18Z/200
PM.

A STRONG COLD FRONT WILL APPROACH THE REGION LATE
MONDAY...BRINGING A CHC OF THUNDERSTORMS TO ALL AREAS. VFR THEN
RETURNS ACROSS THE EAST BEHIND THE FRONT TUESDAY WITH UPSLOPE MVFR
CIGS AND A FEW -SHRA OVER SE WVA.

&&

.RNK WATCHES/WARNINGS/ADVISORIES...
VA...NONE.
NC...NONE.
WV...NONE.

&&

SYNOPSIS...AMS/JJ
NEAR TERM...JJ
SHORT TERM...PC
LONG TERM...PC
AVIATION...AMS/JJ

Hazardous weather outlook, Apr 9, 4:30 AM EDT, 13 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
430 AM EDT SAT APR 9 2011

NCZ001>003-018>020-VAZ007-009>013-015-016-WVZ042>045-101000-
ASHE-ALLEGHANY NC-SURRY-WATAUGA-WILKES-YADKIN-TAZEWELL-SMYTH-BLAND-
GILES-WYTHE-PULASKI-GRAYSON-CARROLL-MERCER-SUMMERS-MONROE-GREENBRIER-
430 AM EDT SAT APR 9 2011

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

.DAY ONE...TODAY AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE AGAIN MONDAY AFTERNOON
AND EVENING. THE PRIMARY THREAT FROM THE SEVERE STORMS WILL BE LARGE
HAIL AND DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY.

NCZ004>006-VAZ014-017>020-022>024-032>035-043>047-058-059-101000-
STOKES-ROCKINGHAM-CASWELL-MONTGOMERY-FLOYD-CRAIG-ALLEGHANY VA-BATH-
ROANOKE-BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-
PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-
430 AM EDT SAT APR 9 2011

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

.DAY ONE...TODAY AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE MONDAY AFTERNOON AND
EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Apr 9, 4:29 PM EDT, 1 hour 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
429 PM EDT SAT APR 9 2011

VAZ007-010-WVZ042-092130-
BLAND VA-MERCER WV-TAZEWELL VA-
429 PM EDT SAT APR 9 2011

...STRONG THUNDERSTORMS WILL AFFECT BLAND...MERCER AND TAZEWELL
COUNTIES...

AT 426 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 6 MILES
WEST OF WELCH TO 10 MILES NORTH OF RICHLANDS TO 7 MILES WEST OF
RICHLANDS...MOVING EAST AT 40 MPH.

WIND GUSTS TO 40 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THESE
STORMS.

THESE STORMS WILL BE NEAR RICHLANDS AROUND 435 PM...CLAYPOOL HILL...
CEDAR BLUFF...BANDY...AND AMONATE AROUND 440 PM...CLIFFIELD AROUND
445 PM...COALDALE...TIPTOP...BOISSEVAIN AND AND ASBERRYS AROUND 455
PM.

LAT...LON 3725 8174 3721 8168 3721 8156 3728 8142
      3742 8129 3746 8131 3753 8122 3752 8099
      3746 8090 3728 8101 3724 8100 3702 8116
      3705 8123 3699 8132 3699 8148 3701 8150
      3697 8160 3697 8179 3707 8186 3718 8186

MC

Local storm report, Apr 9, 4:34 PM EDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
434 PM EDT SAT APR 09 2011

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

0425 PM     HAIL             5 S HILLSVILLE          36.69N 80.73W
04/09/2011  E0.75 INCH       CARROLL            VA   AMATEUR RADIO

            ON ROUTE 52. HAIL COVERED THE GROUND.

&&

JJACKSON

Special weather statement, Apr 9, 4:58 PM EDT, 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
458 PM EDT SAT APR 9 2011

VAZ009-010-012-015-016-092130-
BLAND VA-CARROLL VA-GRAYSON VA-SMYTH VA-WYTHE VA-
458 PM EDT SAT APR 9 2011

...STRONG THUNDERSTORMS WILL AFFECT BLAND...CARROLL...GRAYSON...SMYTH
AND WYTHE COUNTIES...

AT 453 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 6 MILES
SOUTHWEST OF BLAND TO 4 MILES SOUTH OF ABINGDON...MOVING EAST AT 65
MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS. VERY HEAVY RAIN
WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS
AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. EXPECT FREQUENT
CLOUD TO GROUND LIGHTNING FROM THESE STORMS. DO NOT STAY IN THE OPEN
OR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.

THESE STORMS WILL BE NEAR MOUNT ROGERS SUMMIT AROUND 515 PM.

LAT...LON 3708 8112 3696 8081 3688 8074 3691 8068
      3687 8060 3657 8136 3658 8153 3674 8168
      3679 8170 3686 8177

DS

Special weather statement, Apr 9, 5:01 PM EDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
501 PM EDT SAT APR 9 2011

NCZ001-018-VAZ015-092130-
ASHE NC-GRAYSON VA-WATAUGA NC-
501 PM EDT SAT APR 9 2011

...STRONG THUNDERSTORMS WILL AFFECT ASHE...GRAYSON AND WATAUGA
COUNTIES...

AT 458 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 5 MILES
SOUTH OF CHILHOWIE TO 18 MILES WEST OF MOUNTAIN CITY...MOVING EAST AT
50 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS. VERY HEAVY RAIN
WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS
AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. EXPECT FREQUENT
CLOUD TO GROUND LIGHTNING FROM THESE STORMS. DO NOT STAY IN THE OPEN
OR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.

THESE STORMS WILL BE NEAR MOUNT ROGERS SUMMIT AROUND 515 PM.

LAT...LON 3634 8185 3636 8181 3635 8177 3635 8173
      3641 8175 3647 8170 3657 8170 3664 8160
      3667 8154 3657 8135 3655 8136 3620 8184
      3626 8191 3629 8192

DS

Special weather statement, Apr 9, 5:09 PM EDT, 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
509 PM EDT SAT APR 9 2011

VAZ010>014-WVZ042>044-092215-
BLAND VA-GILES VA-MERCER WV-MONROE WV-MONTGOMERY VA-PULASKI VA-
SUMMERS WV-WYTHE VA-
509 PM EDT SAT APR 9 2011

...STRONG THUNDERSTORMS WILL AFFECT BLAND...GILES...MERCER...
MONROE...MONTGOMERY...PULASKI...SUMMERS AND WYTHE COUNTIES...

AT 503 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM CAMP
CREEK TO BLAND...MOVING EAST AT 45 MPH.

WIND GUSTS TO 40 MPH AND HAIL UP TO PEA SIZE ARE POSSIBLE WITH THESE
STORMS. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE
WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL
STREAMS. IF ON OR NEAR CLAYTOR LAKE...GET OUT OF THE WATER AND MOVE
INDOORS OR INSIDE A VEHICLE. SUDDEN WIND GUSTS MAY BE STRONG ENOUGH
TO CAPSIZE YOUR VESSEL.

THESE STORMS WILL BE NEAR LICK CREEK...OAKVALE...ELGOOD...AND CHAPEL
AROUND 515 PM...BOZOO...WILLOWTON...GLEN LYN...AND GUNTON PARK AROUND
520 PM...RED SULPHUR SPRING AND AND INDIAN MILLS AROUND 525 PM.

LAT...LON 3757 8101 3759 8044 3743 8046 3742 8048
      3741 8047 3699 8053 3694 8059 3694 8063
      3689 8070 3689 8074 3698 8086 3708 8111

MC

Special weather statement, Apr 9, 5:36 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 8, 8:03 PM EDT	Special Weather Statement	RNK	Pittsylvania	27 min
Apr 8, 8:29 PM EDT	Tornado Warning	RNK	Patrick	31 min
Apr 8, 8:30 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Patrick	30 min
Apr 8, 9:00 PM EDT	Severe Thunderstorm Warning	RNK	Henry	41 min
Apr 8, 9:29 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles	31 min
Apr 8, 9:50 PM EDT	Severe Thunderstorm Warning	RNK	Giles, Montgomery, Pulaski, City of Radford	25 min
Apr 8, 9:58 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Pulaski, Wythe	32 min
Apr 8, 10:00 PM EDT	Severe Thunderstorm Warning	RNK	Bland	30 min
Apr 8, 10:15 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Montgomery, Pulaski	30 min
Apr 8, 10:29 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Wythe	14 min
Apr 8, 10:37 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Pulaski	23 min
Apr 8, 10:52 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	38 min
Apr 8, 10:59 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Patrick	31 min
Apr 8, 11:11 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell, Wythe	49 min
Apr 8, 11:24 PM EDT	Special Weather Statement	RNK	Henry	36 min
Apr 9, 12:00 AM EDT	Severe Thunderstorm Warning	RNK	Bland, Carroll, Grayson, Smyth, Wythe	30 min
Apr 9, 12:27 AM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Wythe, City of Galax	48 min
Apr 9, 12:56 AM EDT	Tornado Warning	RNK	Carroll, Grayson	34 min
Apr 9, 2:22 AM EDT	Special Weather Statement	RNK	Smyth	53 min
Apr 9, 2:34 AM EDT	Severe Thunderstorm Warning	RNK	Grayson, Smyth	41 min
Apr 9, 2:50 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Smyth, Wythe	85 min
Apr 9, 2:56 PM EDT	Tornado Warning	RNK	Smyth	34 min
Apr 9, 3:18 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell, Wythe	57 min
Apr 9, 3:23 PM EDT	Tornado Warning	RNK	Grayson, Smyth	22 min
Apr 9, 3:42 PM EDT	Tornado Warning	RNK	Grayson	33 min
Apr 9, 3:47 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Patrick	58 min
Apr 9, 4:15 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Patrick, City of Galax	35 min
Apr 9, 4:29 PM EDT	Special Weather Statement	RNK	Bland, Tazewell	61 min
Apr 9, 4:58 PM EDT	Special Weather Statement	RNK	Grayson, Smyth, Wythe	32 min
Apr 9, 5:09 PM EDT	Special Weather Statement	RNK	Giles, Pulaski, City of Radford	66 min
Apr 9, 5:11 PM EDT	Severe Thunderstorm Warning	RNK	Grayson, Smyth	49 min
Apr 8, 11:33 PM EDT	Special Weather Statement	RNK	Stokes	27 min
Apr 8, 11:58 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	32 min
Apr 9, 12:13 AM EDT	Special Weather Statement	RNK	Stokes	17 min
Apr 9, 1:18 AM EDT	Special Weather Statement	RNK	Surry	57 min
Apr 9, 1:26 AM EDT	Severe Thunderstorm Warning	RNK	Stokes, Surry, Yadkin	35 min
Apr 9, 1:28 AM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry, Wilkes, Yadkin	35 min
Apr 9, 1:46 AM EDT	Special Weather Statement	RNK	Ashe	59 min
Apr 9, 2:53 PM EDT	Severe Thunderstorm Warning	RNK	Ashe, Surry, Watauga, Wilkes, Yadkin	67 min
Apr 9, 3:20 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Surry, Watauga, Wilkes, Yadkin	55 min
Apr 9, 3:27 PM EDT	Tornado Warning	RNK	Alleghany, Ashe	33 min
Apr 9, 5:01 PM EDT	Special Weather Statement	RNK	Ashe	29 min
Apr 9, 5:59 PM EDT	Special Weather Statement	RNK	Yadkin	31 min
Apr 9, 6:17 PM EDT	Special Weather Statement	RNK	Caswell	43 min
Apr 8, 9:17 PM EDT	Special Weather Statement	RNK	Mercer	28 min

Nearby

Special Weather Statements in North Carolina, 2011 Every special weather statement in 2011

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.