Alert archive / Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

March 24, 2012Appomattox County, Charlotte County, Virginia

NWS Blacksburg, VA issued this special weather statement at Mar 24, 2012, 9:01 PM EDT for Appomattox County, Charlotte County, Virginia. It was in force for 29 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: Mar 24, 2012, 9:01 PM EDT (01:01 UTC)
Expired: Mar 24, 2012, 9:30 PM EDT
In force: 29 min
Issued by: NWS Blacksburg, VA

Counties Appomattox County, VA, Charlotte County, VA

The radar

The Norfolk radar (KAKQ), 146 km from the middle of the area, began a volume at 01:04 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, 1.0 hours before the alert went out and 78 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: 47 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 741 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 71 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 Mar 24, 7:07 PM EDT, 1 hour 54 minutes earlier.

Area forecast discussion, Mar 24, 7:07 PM EDT, 1 hour 54 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BLACKSBURG VA
707 PM EDT SAT MAR 24 2012

.SYNOPSIS...
LOW PRESSURE TO OUR WEST WILL MOVE EAST THEN SOUTHEAST TONIGHT
INTO SUNDAY. BY SUNDAY NIGHT...THE LOW WILL BE OFF THE CAROLINA
COAST. HIGH PRESSURE WILL BUILD OVER THE REGION MONDAY AND
TUESDAY.

&&

.NEAR TERM /THROUGH SUNDAY/...
AS OF 700 PM PM EDT SATURDAY...
CLEARED WESTERN COUNTIES FOR SEVERE WATCHES WITH OVERALL SVR THREAT
DIMINISHING BEHIND PRIMARY CONVECTIVE BAND. UPDATED GRIDS FOR
TORNADO WATCH 109 AND TORNADO WATCH 108 REMAINS IN EFFECT.

AS OF 350 PM EDT SATURDAY...
A POTENT UPPER LEVEL LOW OVER TN VALLEY WILL MOVE SLOWLY
SOUTHEASTWARD...CROSSING THE SOUTHERN APPALACHIANS TONIGHT AND THEN
THROUGH THE CAROLINAS ON SUNDAY. THE SFC COLD FRONT HAS
PROGRESSED EASTWARD INTO THE SOUTHERN APPALACHIANS AND WILL
CONTINUE TO MOVE EAST INTO WESTERN NC. TORNADO WATCH 108 AND SEVERE
THUNDERSTORM WATCH 105 AND 107 REMAIN IN EFFECT. CONVECTION WILL
TAPER OFF OVERNIGHT.

&&

.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY NIGHT/...
AS OF 215 PM SATURDAY...
MODELS IN FAIRLY GOOD AGREEMENT THAT CLOSED UPPER LOW WILL BE
SOMEWHERE NEAR THE NORTH CAROLINA COAST BY SUNDAY EVENING WITH
A SURFACE REFLECTION OFF THE COAST. THE ENTIRE SYSTEM IS FORECAST TO
CONTINUE AN EASTWARD DRIFT DURING THE DAY MONDAY WITH DIMINISHING
CLOUDS THROUGH THE DAY. ON MONDAY A SURFACE RIDGE OVER SOUTHEAST
CANADA ALONG WITH NORTHWEST FLOW ALOFT WILL BRING COOLER AIR DOWN
ACROSS THE REGION...H85 TEMPS DROP TO NEAR 0C IN THE ESPECIALLY IN
NORTH. THIS WILL BE CHILLY IN COMPARISON WITH THE EXTRAORDINARY
WARMTH OF RECENT DAYS AND LOWS MONDAY NIGHT MAY ACTUALLY FLIRT WITH
FREEZING IN THE NORTHWEST VALLEYS. MET GUIDANCE WAS CONSIDERABLY
COOLER WITH THE LOWS DROPPING TEMPS BELOW FREEZING ACRS THE NEW
RIVER VALLEY AND NORTH WHILE THE MAV GUIDANCE SEVERAL DEGREES
WARMER. ENDED UP USING A MODEL BLEND FOR THE LOWS. HIGH PRESSURE
BUILDS FURTHER SOUTH INTO THE MID-ATLANTIC ON TUESDAY WHICH SHOULD
BRING CLEAR SKIES AND PLEASANT TEMPS MAINLY IN THE UPPER 60S.

&&

.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
AS OF 215 PM SATURDAY...

HIGH DRIFTS SOUTH AND EAST OFF THE REGION ON WEDNESDAY WITH WARMER
RETURN FLOW BRINGING TEMPS BACK INTO THE 70S FOR HIGHS. COLD FRONT
APPROACHES WED NIGHT AS A FAIRLY STRONG SURFACE LOW TRACKS ACROSS
THE NORTHERN GREAT LAKES TOWARD NEW ENGLAND WITH CHANCES FOR SHOWERS
AND FEW THUNDERSTORMS INCREASING OVERNIGHT. RENEWED HIGH PRESSURE
LOOKS TO TAKE OVER THURSDAY AND FRIDAY HOWEVER WITH NO REAL SHOVE OF
COOLER AIR AND TEMPS SHOULD RECOVER BACK TO WELL ABOVE NORMAL FOR
LATE MARCH WHICH SHOULD ABOUT GUARANTEE THAT SOME CLIMATE SITES END
UP WITH THE WARMEST MARCH ON RECORD. SEE CLIMATE SECTION FOR SOME
DETAILS.

&&

.AVIATION /23Z SATURDAY THROUGH THURSDAY/...
AS OF 700 PM EDT SATURDAY...

EXPECT SEVERAL PERIODS OF SHOWERS AND THUNDERSTORMS ACROSS
THE FORECAST AREA THROUGH 06Z SUNDAY. CEILINGS AND VISIBILITIES
WILL LOWER TO MVFR/IFR IN ASSOCIATION WITH THE SHOWERS AND STORMS.
SOME OF THE STRONGER STORMS THIS EVENING MAY PRODUCE GUSTY WINDS AND
LARGE HAIL. MAIN CONVECTIVE BAND MOVING INTO EASTERN PORTIONS OF CWA
THIS EVENING. STRONG THUNDERSTORM NEAR LYH WILL MOVE EAST OF THE
AIRPORT WITHIN THE HOUR.

COVERAGE OF PRECIPITATION WILL DIMINISH TONIGHT. LOW CLOUDS AND
FOG WILL FILL IN OVERNIGHT WITH CEILINGS LOWERING TO IFR/MVFR
LEVELS. HAVE LOWERED VISIBILITY TO LIFR AT LYH WITH MEDIUM
CONFIDENCE. IF NORTHWEST SURFACE AND LOW LEVEL WINDS ARE A LITTLE
STRONGER THAN EXPECTED THEN PROBABILITY OF LIFR OR IFR FOG WILL BE
LOWER.

SHRA WILL DEVELOP AGAIN ACROSS THE AREA SUN...BUT WITH
CONSIDERABLE LESS INSTABILITY INDICATED AND A COLDER/MORE STABLE
SFC ENVIRONMENT...DO NOT ANTICIPATE MUCH TSRA ACTIVITY SUN...JUST
SHOWERS.

DRIER WEATHER AND VFR CONDITIONS ARE EXPECTED BEHIND THIS WEATHER
SYSTEM SUNDAY NIGHT THROUGH TUESDAY.

&&

.CLIMATE...
AS OF 215 PM SATURDAY...
THROUGH MARCH 23...BLACKSBURG...DANVILLE AND BLUEFIELD EASILY ON A
PACE FOR A RECORD WARM MARCH. AT ROANOKE AND LYNCHBURG...WITH MUCH
LONGER PERIODS OF RECORD...ONLY 1921 HAS BEEN WARMER THROUGH THIS
DATE. WITH MORE THAN A WEEK LEFT IN THE MONTH AND NO REAL COLD ON
THE HORIZON THE FORMER THREE SITES LOOK LIKE A SURE BET FOR WARMEST
MARCH AND IT IS STILL VERY POSSIBLE AT ROANOKE AND LYNCHBURG.

&&

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

&&

SYNOPSIS...AMS
NEAR TERM...KK
SHORT TERM...PC
LONG TERM...PC
AVIATION...AMS/KK
CLIMATE...

Hazardous weather outlook, Mar 24, 7:12 PM EDT, 1 hour 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
712 PM EDT SAT MAR 24 2012

NCZ003-004-020-VAZ016-017-032>034-043-252315-
SURRY-STOKES-YADKIN-CARROLL-FLOYD-PATRICK-FRANKLIN-BEDFORD-HENRY-
712 PM EDT SAT MAR 24 2012

...TORNADO WATCH 108 IN EFFECT UNTIL 11 PM EDT THIS EVENING...

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

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   TORNADO WATCH.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS EVENING. THE
PRIMARY THREATS FROM ANY STRONG STORMS ARE HAIL AND GUSTY WINDS.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ005-006-VAZ035-044>047-058-059-252315-
ROCKINGHAM-CASWELL-AMHERST-PITTSYLVANIA-CAMPBELL-APPOMATTOX-
BUCKINGHAM-HALIFAX-CHARLOTTE-
712 PM EDT SAT MAR 24 2012

...TORNADO WATCH 109 IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

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

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   TORNADO WATCH.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS EVENING. THE
PRIMARY THREATS FROM ANY STRONG STORMS ARE HAIL AND GUSTY WINDS.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

VAZ007-009>011-WVZ042>045-252315-
TAZEWELL-SMYTH-BLAND-GILES-MERCER-SUMMERS-MONROE-GREENBRIER-
712 PM EDT SAT MAR 24 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

.DAY ONE...TONIGHT.

SEVERE THUNDERSTORMS ARE POSSIBLE THIS EVENING. THE PRIMARY
THREATS FROM ANY STRONG STORMS ARE HAIL AND GUSTY WINDS.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ001-002-018-019-VAZ012>015-018>020-022>024-252315-
ASHE-ALLEGHANY NC-WATAUGA-WILKES-WYTHE-PULASKI-MONTGOMERY-GRAYSON-
CRAIG-ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-
712 PM EDT SAT MAR 24 2012

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

.DAY ONE...TONIGHT.

STRONG THUNDERSTORMS ARE POSSIBLE THIS EVENING. THE PRIMARY
THREATS FROM ANY STRONG STORMS ARE HAIL AND GUSTY WINDS.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Mar 24, 8:12 PM EDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
812 PM EDT SAT MAR 24 2012

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

0530 PM     FLASH FLOOD      1 E RED BRUSH           36.47N  80.67W
03/24/2012                   SURRY              NC   LAW ENFORCEMENT

            BEECH CREEK FLOODED A PORTION OF GEORGE CHANDLER ROAD.

&&

EVENT NUMBER RNK1200057

WHP

Local storm report, Mar 24, 8:23 PM EDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
823 PM EDT SAT MAR 24 2012

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

0731 PM     HAIL             1 WSW JAVA              36.83N  79.24W
03/24/2012  E0.50 INCH       PITTSYLVANIA       VA   TRAINED SPOTTER

&&

EVENT NUMBER RNK1200058

FISHER

Local storm report, Mar 24, 8:31 PM EDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
831 PM EDT SAT MAR 24 2012

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

0831 PM     HAIL             1 NW APPOMATTOX         37.36N  78.84W
03/24/2012  E1.00 INCH       APPOMATTOX         VA   PUBLIC

&&

EVENT NUMBER RNK1200059

FISHER

Special weather statement, Mar 24, 8:34 PM EDT, 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
834 PM EDT SAT MAR 24 2012

VAZ047-250100-
BUCKINGHAM VA-
834 PM EDT SAT MAR 24 2012

...A STRONG THUNDERSTORM WILL AFFECT BUCKINGHAM COUNTY...

AT 831 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES NORTHWEST
OF DILLWYN...MOVING NORTHEAST 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 CENTENARY AROUND 855 PM.

LAT...LON 3775 7849 3764 7835 3755 7859 3762 7866

DS

Local storm report, Mar 24, 8:51 PM EDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
851 PM EDT SAT MAR 24 2012

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

0715 PM     HAIL             1 NNE LONG MOUNTAIN EST 37.31N  79.05W
03/24/2012  E0.70 INCH       CAMPBELL           VA   TRAINED SPOTTER

&&

EVENT NUMBER RNK1200060

FISHER

Special weather statement, Mar 24, 9:01 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
901 PM EDT SAT MAR 24 2012

VAZ046-047-059-250130-
APPOMATTOX VA-BUCKINGHAM VA-CHARLOTTE VA-
901 PM EDT SAT MAR 24 2012

...STRONG THUNDERSTORMS WILL AFFECT APPOMATTOX...BUCKINGHAM AND
CHARLOTTE COUNTIES...

AT 859 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM BENT
CREEK TO 4 MILES NORTHWEST OF CHASE CITY...MOVING NORTHEAST AT 30
MPH.

WIND GUSTS TO 30 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THESE
STORMS.

THESE STORMS WILL BE NEAR KEYSVILLE AROUND 910 PM AND WINGINA AROUND
915 PM.

LAT...LON 3689 7848 3681 7855 3733 7890 3754 7886
      3756 7882 3758 7884 3765 7871 3734 7847
      3733 7852 3737 7859 3734 7859 3726 7867
      3720 7869 3720 7864 3715 7859 3715 7853
      3709 7848 3708 7844

DS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 24, 8:03 PM EDT	Special Weather Statement	RNK	Appomattox	57 min
Mar 24, 8:26 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Buckingham	34 min
Mar 24, 8:34 PM EDT	Special Weather Statement	RNK	Buckingham	26 min
Mar 24, 8:36 PM EDT	Areal Flood Advisory	RNK	Appomattox, Buckingham, Campbell	3 hr
Mar 24, 8:43 PM EDT	Areal Flood Advisory	RNK	Carroll, Patrick	3 hr
Mar 24, 8:47 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	28 min
Mar 24, 9:15 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	45 min
Mar 24, 9:31 PM EDT	Special Weather Statement	RNK	Buckingham	29 min
Mar 24, 10:42 PM EDT	Areal Flood Advisory	RNK	Amherst, Appomattox, Bedford, Campbell, City of Lynchburg	3 hr
Mar 25, 1:21 AM EDT	Areal Flood Warning	RNK	Campbell	9 hr
Mar 25, 6:50 AM EDT	Flash Flood Watch	RNK	Amherst, Appomattox, Bedford, Buckingham, Campbell, Carroll and 12 more	14 hr
Mar 25, 7:35 AM EDT	River Flood Warning	RNK	Halifax	54 hr
Mar 25, 7:44 AM EDT	River Flood Warning	RNK	Campbell, Charlotte, Halifax	12 hr
Mar 25, 7:44 AM EDT	River Flood Warning	RNK	Charlotte, Halifax	46 hr
Mar 25, 11:09 AM EDT	Special Weather Statement	RNK	Henry, Patrick, City of Martinsville	111 min
Mar 25, 12:26 PM EDT	Special Weather Statement	RNK	Carroll, City of Galax	2 hr
Mar 25, 2:55 PM EDT	River Flood Warning	RNK	Buckingham, Fluvanna	5 hr
Mar 24, 10:03 PM EDT	Areal Flood Advisory	RNK	Surry	103 min
Mar 25, 5:29 AM EDT	Special Weather Statement	RNK	Yadkin	46 min
Mar 25, 8:30 AM EDT	Special Weather Statement	RNK	Rockingham, Stokes	2 hr
Mar 25, 9:56 AM EDT	Flash Flood Warning	RNK	Rockingham, Stokes	5 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.