Alert archive / Virginia / Special Weather Statements in 2012
Special Weather Statement, NWS Blacksburg, VA
NWS Blacksburg, VA issued this special weather statement at Jun 18, 2012, 4:40 PM EDT for Patrick County, Virginia. It was in force for 50 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
- Jun 18, 2012, 4:40 PM EDT (20:40 UTC)
- Expired
- Jun 18, 2012, 5:30 PM EDT
- In force
- 50 min
- Issued by
- NWS Blacksburg, VA
County Patrick County, VA
The radar
The Roanoke radar (KFCX), 29 km from the middle of the area, began a volume at 20:43 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, 8.7 hours before the alert went out and 92 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1209 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>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 Jun 18, 4:24 PM EDT, 16 minutes earlier.
Area forecast discussion, Jun 18, 4:24 PM EDT, 16 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BLACKSBURG VA 424 PM EDT MON JUN 18 2012 .SYNOPSIS... A WEAK UPPER LEVEL DISTURBANCE WILL EXIT THE AREA TONIGHT. HIGH PRESSURE ALOFT WILL STRENGTHEN OVER THE AREA BY WEDNESDAY...RESULTING IN A WARMING TREND AND HUMID CONDITIONS FOR THE REMAINDER OF THE WEEK. && .NEAR TERM /THROUGH TUESDAY/... AS OF 415 PM EDT MONDAY... TONIGHT AND TUESDAY... SUBTLE SHORT WAVES CROSSING THE MID ATLANTIC REGION HAVE TRIGGER ISOLATED TO SCATTERED THUNDERSTORMS ALONG AND EAST OF THE BLUE RIDGE AND IN SOUTHEAST WEST VIRGINIA. EXPECT MANY OF THESE STORMS TO DISSIPATE SHORTLY AFTER SUNSET. SURFACE DEW POINTS WILL REMAIN IN THE UPPER 50S TO MID 60S THROUGH TUESDAY. WITH THIS LOW LEVEL MOISTURE AND WEAK SURFACE AND LOW LEVEL WINDS...FOG WILL FORM IN THE VALLEYS AND LOCATIONS THAT HAD RAIN MONDAY AFTERNOON. 500 MB HEIGHTS RISE THROUGH THE PERIOD WITH A 593 DM HIGH OVER OHIO BY THE END OF THE DAY TUESDAY. USED A BLEND OF ADVMET AND MAV TEMPERATURES...STAYING CLOSER TO THE MET GUIDANCE FOR HIGHS ON TUESDAY. ENOUGH MOISTURE STILL IN THE AREA FOR MORE ISOLATED TO SCATTERED THUNDERSTORMS TUESDAY AFTERNOON BUT LIFTING MECHANISM WILL BE WEAKER. SO DIFFERENTIAL HEATING AND TOPOGRAPHY WILL PLAY A GREATER ROLE IN THE FORMATION OF THE STORMS. && .SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/... AS OF 345 PM EDT MONDAY... AN UPPER LEVEL DOME OF HIGH PRESSURE...BUILDING IN FROM THE CENTRAL GULF COAST REGION...WILL BE THE DOMINANT FEATURE OF OUR WEATHER PATTERN THROUGH THE MIDDLE OF THE WEEK. AS SUCH...THIS UPPER LEVEL HIGH PRESSURE WILL HELP WARM TEMPERATURES ACROSS OUR AREA TO THOSE MORE COMMONLY FOUND DURING MID TO LATE SUMMER...WITH WEDNESDAY AND THURSDAY AFTERNOON HIGHS RANGING FROM THE MID TO UPPER 80S ACROSS THE MOUNTAINS...AND FROM THE LOW TO MID 90S ACROSS THE PIEDMONTS. OVERNIGHT LOWS WILL HOLD IN THE 60S ACROSS MOST OF THE AREA. THIS UPPER LEVEL HIGH PRESSURE WILL ALSO HAVE A STABILIZING EFFECT ON OUR ATMOSPHERE...HELPING TO STRICTLY LIMIT THE DEVELOPMENT OF ANY SHOWERS OR THUNDERSTORMS ACROSS THE PIEDMONT REGION. HOWEVER... DIFFERENTIAL HEATING AND LOW LEVEL WIND CONVERGENCE ALONG SOME OF THE HIGHER RIDGELINES WILL LIKELY BECOME STRONG ENOUGH EACH AFTERNOON TO ALLOW A FEW THUNDERSTORMS TO DEVELOP OVER THE MOUNTAINS. ONE OR TWO OF THESE STORMS MAY BECOME STRONG FROM TIME TO TIME...BUT WITH NO REAL SUPPORT IN THE UPPER LEVELS OF THE ATMOSPHERE...ANY STORMS WHICH DO DEVELOP WILL NOT STAY STRONG FOR EXTENDED PERIODS OF TIME. SHOWER AND THUNDERSTORM ACTIVITY SHOULD FADE QUICKLY EACH EVENING AFTER SUNSET. && .LONG TERM /FRIDAY THROUGH MONDAY/... AS OF 345 PM EDT MONDAY... THE MAIN FEATURE TO KEEP AN EYE ON DURING THE LONGTERM PERIOD WILL BE A COLD FRONT THAT WILL PASS THROUGH THE AREA ON FRIDAY AND EARLY SATURDAY MORNING. THIS FRONT WILL BRING MORE WIDESPREAD SHOWERS AND THUNDERSTORMS TO THE AREA DURING THE EARLY HALF OF THE WEEKEND... BEFORE MOVING TO THE SOUTHEAST BY SATURDAY AFTERNOON. NORTHWESTERLY FLOW TAKES OVER DURING THE LATER HALF OF THE WEEKEND AS AN UPPER LEVEL TROUGH SETS UP OVER THE HUDSON BAY OF CANADA...SO WILL HAVE TO KEEP AN EYE ON UPPER LEVEL DISTURBANCES PUSHING INTO OUR AREA FROM THE GREAT LAKES REGION. TEMPERATURES WILL BE A LITTLE COOLER BEHIND THE COLD FRONT...BUT WILL REMAIN SUMMERLIKE WITH HIGHS RANGING FROM THE MID 80S WEST...TO THE LOW 90S EAST. && .AVIATION /20Z MONDAY THROUGH SATURDAY/... AS OF 130 PM EDT MONDAY... SCATTERED THUNDERSTORMS THIS AFTERNOON WERE FORMING ALONG THE BLUE RIDGE. THE STORMS WILL IMPACT ROA...LWB AND BCB AROUND THE START OF THE 18Z TAF PERIOD THEN LYH AND DAN BEFORE 22Z. EXPECT COVERAGE AND INTENSITY OF STORMS TO DIMINISH AFTER SUNSET. SURFACE DEW POINTS WILL BE IN THE UPPER 50S TO MID 60S. MODERATE TO HIGH CONFIDENCE OF MVFR FOG IN THE WESTERN VALLEYS OVERNIGHT...ESPECIALLY IN LOCATIONS THAT GET RAIN THIS AFTERNOON. TUESDAY THROUGH FRIDAY...THERE IS A CHANCE FOR WIDELY SCATTERED AFTERNOON/EVENING SHRA/TSRA...ESPCLY OVER THE MTNS...BUT LIMITED COVERAGE SHOULD BE NAVIGABLE. A WEAK COLD FRONT DROPPING IN FROM THE NW MAY BRING SLIGHTLY BETTER COVERAGE OF SHRA/TSRA BY THE END OF THE WEEK. LATE NIGHT MVFR TO IFR VALLEY OR RIVER VALLEY FOG ARE POSSIBLE AROUND DAYBREAK EACH MORNING...BUT MAINLY IN THE MOUNTAINS. ANY FOG FORMATION SHOULD BE LIMITED TO A FEW HOURS NEAR DAYBREAK... DISSIPATING QUICKLY AFTER SUNRISE. && .RNK WATCHES/WARNINGS/ADVISORIES... VA...NONE. NC...NONE. WV...NONE. && SYNOPSIS...AMS NEAR TERM...AMS SHORT TERM...NF LONG TERM...RCS AVIATION...AMS/PM
Hazardous weather outlook, Jun 18, 4:50 AM EDT, 11 hours 50 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 450 AM EDT MON JUN 18 2012 NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059- WVZ042>045-190900- 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- 450 AM EDT MON JUN 18 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. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Jun 18, 2:30 PM EDT, 2 hours 10 minutes before
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</html>Local storm report, Jun 18, 3:06 PM EDT, 1 hour 34 minutes before
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</html>Local storm report, Jun 18, 3:07 PM EDT, 1 hour 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
307 PM EDT MON JUN 18 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0142 PM TSTM WND DMG 4 NNE ROANOKE 37.33N 79.92W
06/18/2012 ROANOKE VA 911 CALL CENTER
TREE DOWN ON CARLOS DRIVE
&&
FISHERSpecial weather statement, Jun 18, 3:24 PM EDT, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 324 PM EDT MON JUN 18 2012 VAZ032-033-043-044-182015- FRANKLIN VA-PATRICK VA-PITTSYLVANIA VA-HENRY VA- 324 PM EDT MON JUN 18 2012 ...SPECIAL WEATHER STATEMENT... AT 321 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR FERRUM...MOVING SOUTHEAST AT 15 MPH. HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM. RAINFALL AMOUNTS UP TO AN INCH ARE POSSIBLE WITH THIS STORM. THIS STRONG THUNDERSTORM WILL BE NEAR... OAK LEVEL...BASSETT AND SYDNORSVILLE AROUND 400 PM EDT. STANLEYTOWN AND FIELDALE AROUND 410 PM EDT. FIGSBORO...COLLINSVILLE...VILLA HEIGHTS AND MARTINSVILLE CITY AROUND 415 PM EDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 3660 7993 3688 8014 3699 7997 3698 7948 TIME...MOT...LOC 1921Z 319DEG 12KT 3690 8000 07
Special weather statement, Jun 18, 3:47 PM EDT, 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 347 PM EDT MON JUN 18 2012 VAZ013-014-016-017-032-033-182030- FRANKLIN VA-PATRICK VA-CARROLL VA-PULASKI VA-FLOYD VA-MONTGOMERY VA- 347 PM EDT MON JUN 18 2012 ...SPECIAL WEATHER STATEMENT... AT 342 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR INDIAN VALLEY...MOVING SOUTHEAST AT 15 MPH. HAIL UP TO THE SIZE OF DIMES AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM. RAINFALL AMOUNTS AROUND AN INCH ARE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... FLOYD...WILLIS...COPPER VALLEY...DUGSPUR...CHARITY... AND ALUM RIDGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 3691 8067 3700 8048 3684 8009 3670 8059 TIME...MOT...LOC 1942Z 330DEG 4KT 3691 8053 07
Special weather statement, Jun 18, 4:40 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 440 PM EDT MON JUN 18 2012 VAZ013-016-017-032-033-043-182130- FRANKLIN VA-PATRICK VA-CARROLL VA-HENRY VA-PULASKI VA-FLOYD VA- 440 PM EDT MON JUN 18 2012 ...SPECIAL WEATHER STATEMENT... AT 438 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR DUGSPUR...MOVING EAST AT 15 MPH. HAIL UP TO THE SIZE OF DIMES AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM. RAINFALL AMOUNTS UP TO AN INCH ARE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... INDIAN VALLEY...WOOLWINE...FLOYD...WILLIS...SANVILLE... ENDICOTT...BUFFALO RIDGE...MEADOWS OF DAN... AND CHARITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 3675 8070 3693 8067 3690 8000 3662 8005 TIME...MOT...LOC 2038Z 279DEG 12KT 3684 8060 07
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 1:12 PM EDT | Special Weather Statement | RNK | Roanoke, City of Roanoke, City of Salem | 48 min |
| Jun 18, 1:36 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Franklin, Roanoke, City of Roanoke, City of Salem | 39 min |
| Jun 18, 2:10 PM EDT | Special Weather Statement | RNK | Patrick | 50 min |
| Jun 18, 2:30 PM EDT | Special Weather Statement | RNK | Franklin | 45 min |
| Jun 18, 3:24 PM EDT | Special Weather Statement | RNK | City of Martinsville | 51 min |
| Jun 18, 3:47 PM EDT | Special Weather Statement | RNK | Floyd | 43 min |
| Jun 18, 3:58 PM EDT | Severe Thunderstorm Warning | RNK | Franklin, Pittsylvania | 62 min |
| Jun 18, 5:05 PM EDT | Special Weather Statement | RNK | City of Galax | 40 min |
| Jun 18, 5:35 PM EDT | Special Weather Statement | RNK | City of Danville | 40 min |
| Jun 18, 5:57 PM EDT | Special Weather Statement | RNK | Carroll | 48 min |
| Jun 18, 6:59 PM EDT | Special Weather Statement | RNK | Carroll, Wythe, City of Galax | 46 min |
| Jun 18, 6:12 PM EDT | Severe Thunderstorm Warning | RNK | Wilkes | 63 min |
| Jun 18, 6:52 PM EDT | Areal Flood Warning | RNK | Wilkes | 2 hr |
| Jun 17, 10:45 PM EDT | Special Weather Statement | RNK | Greenbrier | 45 min |
| Jun 17, 11:30 PM EDT | Special Weather Statement | RNK | Greenbrier | 45 min |
Nearby
Special Weather Statements in Virginia, 2012Every 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.