Heavy rains of 2 to 4 inches over portions of the Dan River basin resulted in a minor flood at South Boston.
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The episode as NWS RNK wrote it up.
Heavy rains of 2 to 4 inches over portions of the Dan River basin resulted in a minor flood at South Boston.
The local office's own words before the first event, 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 the first event at Mar 3, 6:20 PM EST, 1 hour 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BLACKSBURG VA 620 PM EST SAT MAR 3 2007 .UPDATE... && .AVIATION /00Z-24Z/... COLD FRONT MOVING THROUGH THE OHIO VALLEY WILL BRING MAINLY SNOW TO AREAS WEST OF THE BLUE RIDGE THROUGH SUNDAY MORNING. MAJORITY OF THE MOISTURE IS BEHIND THE FRONT...BUT MAY BEGIN AS A MIXTURE OF RAIN AND SNOW BEFORE SWITCHING TO ALL SNOW BY 02Z SUNDAY. SINCE CURRENT AIR MASS OVER THE AREA AND AHEAD OF THE FRONT IS VERY DRY...EARLY PRECIPITATION MAY JUST BE VIRGA AND RESULT IN LOWERING CEILINGS THIS EVENING. LOW MVFR CEILINGS LIKELY ALONG WESTERN SLOPES...HIGH END MVFR ELSEWHERE. SITES EAST OF THE BLUE RIDGE SHOULD MAINTAIN VFR THROUGH THE PERIOD. FRONT JUMPS ACROSS THE AREA VERY QUICKLY THIS EVENING...THANKS IN PART TO A LEE SURFACE TROUGH. WINDS SHOULD RELAX JUST AFTER SUNSET THEN PICK BACK UP WITH FRONTAL PASSAGE. PRESSURE RISES AND COLD AIR ADVECTION WILL BRING WINDY/GUSTY CONDITIONS INTO THE REGION 03Z SUNDAY WITH BEST LOW LEVEL JET (50KTS) CROSSING THE AREA. MOMENTUM TRANSFER COULD BRING GUSTS UP TO 25 KTS FOR ELEVATIONS BELOW 3 KFT ALONG AND WEST OF THE BLUE RIDGE. HIGHER ELEVATIONS COULD SEE GUSTS UP TO 45 KTS. UPSLOPE FLOW AND LOW LEVEL MOISTURE SHOULD KEEP SNOW FALLING THROUGH THE MORNING ACROSS WESTERN SLOPES OF SE WV THEN SURFACE RIDGE BEGINS TO BUILD IN LATE IN THE PERIOD. && .EQUIPMENT... RNK 00Z SUN SOUNDING WILL BE UNAVAILABLE DUE TO EQUIPMENT FAILURE. REPLACEMENT PARTS WILL ARRIVE THIS EVENING. && .PREV DISCUSSION... /ISSUED 324 PM EST SAT MAR 3 2007/ SHORT TERM /TONIGHT THROUGH MONDAY/... MAIN STORY TONIGHT INTO SUNDAY IS SNOW SHOWERS AND WIND. EARLY AFTERNOON ANALYSIS SHOWED DIFFUSE SURFACE FRONT/LEADING EDGE OF COLDER AIR ADVANCING INTO WESTERN WEST VIRGINIA. IN ADVANCE OF THIS FEATURE...DEEP MIXING HAS ALLOWED FOR A QUITE WINDY DAY AREAWIDE WITH EXCELLENT MOMENTUM TRANSPORT OF JET ALOFT. WILL HOLD ONTO GOING WIND ADVISORY FAR SOUTHWEST PER RECENT REPORTS OF GUSTS TO AROUND 50 MPH AND CONTINUED DEEP MIXING IN ADVANCE OF FRONTAL BOUNDARY. THINGS SHOULD SETTLE DOWN AFTER SUNSET EASTERN AREAS WITH LOSS OF MIXING...THOUGH EXPECT RENEWED SURGE OF WIND PER ONSET OF FAIRLY STRONG COLD ADVECTION WEST. SETUP APPEARS FAVORABLE FOR A PERIOD OF UPSLOPE SNOW SHOWERS OVERNIGHT WITH CYCLONIC FLOW ALOFT AND FAVORABLE TRAJECTORIES FROM THE NORTHWEST. INVERSION HEIGHTS UP AROUND 5KFT AND GOOD CRYSTAL GROWTH AT THE TOP OF THE SATURATED LAYER ALONG WITH GOOD INSTABILITY PER PASSAGE OF COLD POOL ALOFT (SFC-800MB LI/S APPROACHING -3C) SHOULD SUPPORT A PERIOD OF FAIRLY HEALTHY SNOW SHOWERS WESTERN AREAS. THUS PLAN TO CARRY MENTION OF 1 TO 2 INCHES FAR WEST WITH UP TO 3 INCHES WESTERN GREENBRIER COUNTY. ATTENTION THEN TURNS TO WINDS TOMORROW AFTN AND ESPECIALLY TOMORROW NIGHT. INCREASE IN H85 WINDS TO 50 KNOTS OR BETTER PER TIGHTENING OF GRADIENT ALOFT COINCIDENT WITH PERIOD OF MAXIMUM SUBSIDENCE BEHIND FINAL SHORTWAVE AROUND 06Z MAY BE ENOUGH TO GENERATE ADVISORY LEVEL WINDS ONCE AGAIN NORTHERN MOUNTAINS INTO THE BLUE RIDGE COUNTIES. TIME HEIGHTS SHOW THIS POSSIBILITY WELL WITH 45-50 KNOTS OF FLOW AT RIDGE TOP LEVEL. THEREAFTER...UPSLOPE WILL SHUT OFF SUNDAY NIGHT AS FLOW BACKS MORE WESTERLY WITH RELATION OF EASTERN CONUS TROUGH. TEMPS QUITE CHILLY TOMORROW UNDER STRONG COLD ADVECTION...THOUGH LIKELY OFFSET PIEDMONT WITH DOWNSLOPE WARMING. RECOVERY LIKELY MONDAY WITH ONSET OF WARM ADVECTION IN ADVANCE OF ANOTHER FRONT SET TO ARRIVE LATE MONDAY...THOUGH ONCE AGAIN WITHOUT PRECIP GIVEN SIGNIFICANT LACK OF MOISTURE. LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... MAINLY TRANQUIL PERIOD OF WEATHER STILL APPEARS ON TARGET FOR MUCH OF THE UPCOMING WEEK WITH A SERIES OF HIGH PRESSURE SYSTEMS SLIDING DOWN THRU THE REGION. THIS IN COMBINATION WITH A WEST COAST RIDGE/EAST COAST TROUGH PATTERN SHOULD KEEP TEMPS ON THE CHILLY SIDE MAINLY FIRST HALF OF THE WEEK...BEFORE MODERATION OCCURS WITH A RETURN TO MORE RIDGING ALOFT/WARM ADVECTION BY WEEKS END. INITIALLY...ONGOING COLD ADVECTION MONDAY NIGHT/EARLY TUES MAY BE ENOUGH TO PROVIDE A FEW SNOW SHOWERS FAR WEST BEFORE MOISTURE BELOW 800 MB QUICKLY SHALLOWS WITH ARRIVAL OF STRONG HIGH PUSHING THRU THE GREAT LAKES. GRADIENT REMAINS TIGHT EARLY ON...AND EXPECT TO SEE A CONTINUATION OF GUSTY WINDS INTO TUESDAY. WEAK CLIPPER SYSTEM MOVING THRU THE GREAT LAKES ON WEDNESDAY SIGNALS A CHANGE IN THE WX PATTERN WITH WARM ADVECTION TAKING HOLD WED NIGHT AND CONTINUING THRU THE END OF THE PERIOD. 00Z GFS DEPICTION OF MORE SOUTHWARD TRACK OF SYSTEM DOES NOT HAVE SUPPORT FROM OTHER GLOBAL GUIDANCE OF ENSEMBLE MEMBERS...AND WAS DISCOUNTED. WHAT THE SYSTEM SHOULD DO IS SPREAD WARM ADVECTION CLOUDS ACRS THE NORTH...WHICH MAY AID IN HOLDING TEMPS DOWN A BIT. THEREAFTER...A SLOW WARMUP ON TAP FOR FRIDAY...WITH MORE SIGNIFICANT WARMING FOR SATURDAY IN ADVANCE OF THE NEXT COLD FRONT ADVANCING TOWARD THE REGION. 06Z GFS APPEARS OVERDONE IN BRINGING QPF INTO THE REGION ON FRIDAY...AS APPEARS THE MODEL SUFFERING CONVECTIVE PROBLEMS AND THUS OVERDEVELOPING LOW PRESSURE TOO CLOSE TO THE COAST. INSTEAD...SUSPECT STRONG SURFACE RIDGING LIKELY TO HOLD PRECIP SOUTH OF THE AREA...WITH A GOOD SHOT AT SOME SHOWERS BY THE WEEKEND PENDING EVENTUAL TIMING OF FRONTAL BOUNDARY. AVIATION /18Z-18Z/... CEILINGS WILL DROP TO MVFR AT BLF AND LWB AFT 00Z BEHIND THE COLD FRONT. SNOW SHOWERS WILL DEVELOP DURING THE EVENING WITH MVFR VISIBILTIES. THE HEAVIER SNOW SHOWERS WILL STAY JUST WEST OF LWB SO NOT EXPECTING THE VSBYS TO DROP BELOW 3 MILES. AT BLF MODELS ARE BRINGING LOWER CEILINGS...BELOW 1000 FEET BY 06Z. SNOW SHOWERS WILL END IN THE MORNING AND AS MIXING STARTS AGAIN AROUNF 15Z CEILINGS WILL IMPROVE BACK TO MVFR. && .RNK WATCHES/WARNINGS/ADVISORIES... VA...WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR VAZ015. NC...WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR NCZ001-002-018. WV...NONE. && UPDATE... AVIATION...RCS EQUIPMENT...
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 121 PM EST SAT MAR 3 2007 NCZ003>006-019-020-VAZ007-009>014-016>020-022>024-032>035-043>046- 059-041100- SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-TAZEWELL-SMYTH- BLAND-GILES-WYTHE-PULASKI-MONTGOMERY-CARROLL-FLOYD-CRAIG- ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN- BEDFORD-AMHERST-HENRY-PITTSYLVANIA-CAMPBELL-APPOMATTOX-CHARLOTTE- 121 PM EST SAT MAR 3 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL NORTH CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA... SOUTH CENTRAL VIRGINIA...SOUTHWEST VIRGINIA AND WEST CENTRAL VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. WVZ042>045-041100- MERCER-SUMMERS-MONROE-GREENBRIER- 121 PM EST SAT MAR 3 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT SNOW SHOWERS ARE EXPECTED ACROSS THE HIGHER ELEVATIONS OVERNIGHT. SNOW ACCUMULATIONS OF BETWEEN 1 AND 3 INCHES COULD OCCUR ALONG HIGHER WEST FACING SLOPES. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. VAZ058-041100- HALIFAX- 121 PM EST SAT MAR 3 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT A RIVER FLOOD WARNING REMAINS IN EFFECT ALONG THE DAN RIVER. WATER LEVELS NEAR OR ABOVE FLOOD STAGE ARE EXPECTED ALONG THE DAN RIVER FROM PACES TO SOUTH BOSTON TODAY AND TONIGHT. THIS WILL RESULT IN MINOR FLOODING. FOR ADDITIONAL WEATHER INFORMATION...VISIT US ON THE WEB AT HTTP://WWW.WEATHER.GOV/BLACKSBURG AND LOOK FOR THE LATEST FLOOD STATEMENT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY MINOR FLOODING WILL LIKELY CONTINUE ALONG THE DAN RIVER AT SOUTH BOSTON SUNDAY AND SUNDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. NCZ001-002-018-VAZ015-041100- ASHE-ALLEGHANY NC-WATAUGA-GRAYSON- 121 PM EST SAT MAR 3 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST NORTH CAROLINA AND SOUTHWEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT A WIND ADVISORY IS IN EFFECT THIS AFTERNOON AND EVENING FOR WEST WINDS GUSTING TO 55 MPH. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. VAZ047-041100- BUCKINGHAM- 121 PM EST SAT MAR 3 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT A RIVER FLOOD WARNING IS IN EFFECT ALONG THE JAMES RIVER AT BREMO BLUFF FOR MINOR FLOODING THROUGH TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY MINOR FLOODING IS EXPECTED TO CONTINUE AT BREMO BLUFF THROUGH SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Heavy rains caused the Dan River to rise above the 19 foot flood stage on the morning of the 3rd and crest at 23.0 feet at 2 am on the morning of the 4th in minor flood. The river fell below flood stage quickly later in morning on the 4th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2007Every state in 2007This day in weather historyWarnings in Virginia, March 2007
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 20259.