Alert archive / North Carolina / Areal Flood Warnings in 2012
Areal Flood Warning 11, NWS Blacksburg, VA
NWS Blacksburg, VA issued this areal flood warning at Aug 5, 2012, 5:22 PM EDT for Ashe County, Watauga County, North Carolina. It was in force for 104 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 5, 2012, 5:22 PM EDT (21:22 UTC)
- Expired
- Aug 5, 2012, 7:06 PM EDT
- In force
- 104 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Ashe County, NC, Watauga County, NC
The radar
The Roanoke radar (KFCX), 141 km from the middle of the area, began a volume at 21:24 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, 9.4 hours before the alert went out and 155 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
- 33 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -77 m²/s²
- 0-3 km storm-relative helicity
- -50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood warning 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 areal flood warning went out at Aug 5, 4:13 PM EDT, 1 hour 9 minutes earlier.
Area forecast discussion, Aug 5, 4:13 PM EDT, 1 hour 9 minutes before
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</html>Hazardous weather outlook, Aug 5, 4:18 PM EDT, 1 hour 4 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 418 PM EDT SUN AUG 5 2012 NCZ001-002-018-019-VAZ007-009-010-012-015-WVZ042-062030- ASHE-ALLEGHANY NC-WATAUGA-WILKES-TAZEWELL-SMYTH-BLAND-WYTHE-GRAYSON- MERCER- 418 PM EDT SUN AUG 5 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST NORTH CAROLINA...SOUTHWEST VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...TONIGHT. A SLOW MOVING AREA OF HEAVY RAINFALL WITH A FEW EMBEDDED THUNDERSTORMS MAY CAUSE WATER PROBLEMS THIS EVENING AND EARLY TONIGHT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NCZ003-004-020-VAZ011-013-014-016>020-022>024-032>035-043-045>047- 059-WVZ043>045-062030- SURRY-STOKES-YADKIN-GILES-PULASKI-MONTGOMERY-CARROLL-FLOYD-CRAIG- ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN- BEDFORD-AMHERST-HENRY-CAMPBELL-APPOMATTOX-BUCKINGHAM-CHARLOTTE- SUMMERS-MONROE-GREENBRIER- 418 PM EDT SUN AUG 5 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. AN ISOLATED THUNDERSTORMS WITH HEAVY RAINFALL MAY LEAD TO LOCALIZED WATER ISSUES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NCZ005-006-VAZ044-058-062030- ROCKINGHAM-CASWELL-PITTSYLVANIA-HALIFAX- 418 PM EDT SUN AUG 5 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH CAROLINA AND SOUTH CENTRAL VIRGINIA. .DAY ONE...TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. A FEW AFTERNOON THUNDERSTORMS COULD BE STRONG WITH DAMAGING WINDS AND HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Aug 5, 3:15 PM EDT, 2 hours 7 minutes before
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</html>Special weather statement, Aug 5, 4:41 PM EDT, 41 minutes before
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</html>Special weather statement, Aug 5, 4:57 PM EDT, 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
457 PM EDT SUN AUG 5 2012
NCZ001-018-052200-
ASHE NC-WATAUGA NC-
457 PM EDT SUN AUG 5 2012
...A STRONG THUNDERSTORM WILL AFFECT ASHE AND WATAUGA COUNTIES...
AT 454 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES NORTH OF
SUGAR GROVE...MOVING NORTHEAST AT 5 MPH.
WIND GUSTS TO 40 MPH AND SMALL HAIL 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 SILVERSTONE AROUND 505 PM...SILVERSTONE
AROUND 510 PM...MEAT CAMP AROUND 545 PM AND TROUT AROUND 600 PM.
LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.
LAT...LON 3636 8181 3635 8177 3635 8173 3641 8175
3647 8170 3654 8171 3659 8168 3658 8152
3637 8124 3636 8129 3637 8134 3634 8137
3622 8185 3631 8190
KKThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 11:33 PM EDT | Special Weather Statement | RNK | Floyd | 57 min |
| Aug 5, 3:15 PM EDT | Special Weather Statement | RNK | Rockbridge, City of Buena Vista, City of Lexington | 60 min |
| Aug 5, 4:41 PM EDT | Special Weather Statement | RNK | Amherst, Botetourt, City of Buena Vista, City of Lexington | 64 min |
| Aug 5, 5:54 PM EDT | Special Weather Statement | RNK | Giles | 66 min |
| Aug 5, 6:16 PM EDT | Areal Flood Advisory | RNK | Bland, Giles | 4 hr |
| Aug 5, 7:03 PM EDT | Flash Flood Warning | RNK | Grayson, Smyth | 5 hr |
| Aug 5, 7:40 PM EDT | Special Weather Statement | RNK | Bedford, Botetourt, Carroll, Craig, Floyd, Grayson and 7 more | 65 min |
| Aug 4, 10:32 PM EDT | Special Weather Statement | RNK | Surry, Yadkin | 58 min |
| Aug 5, 4:57 PM EDT | Special Weather Statement | RNK | Ashe | 63 min |
Nearby
Areal Flood Warnings in North Carolina, 2012Every areal flood warning 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.