Alert archive / Virginia / Flash Flood Warnings in 2017
Flash Flood Warning 3, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Apr 29, 2017, 4:41 PM EDT for Smyth County, Wythe County, Virginia. It was in force for 6 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 29, 2017, 4:41 PM EDT (20:41 UTC)
- Expired
- Apr 29, 2017, 10:45 PM EDT
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Smyth County, VA, Wythe County, VA
The radar
The Roanoke radar (KFCX), 92 km from the middle of the area, began a volume at 20:45 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 29, 5:30 PM EDT | FLASH FLOOD | 3 Ssw Rural Retreat, VA | BROADCAST MEDIA FORWARDED REPORTS OF FLASH FLOODING INUNDATING PORTIONS OF THE RURAL RETREAT FAIRGROUNDS. FLOWING WATER OVERFLOWED ITS CULVERT RESTRAINTS TO FLOOD TRAILERS AND TENTS AT THIS LOCATION. 2 - 3 INCHES OF RAINFALL ESTIMATED OVER A SHORT AMOUNT OF TI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.7 hours before the alert went out and 153 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
- 1891 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 4.8
The text
As transmitted.
654 WGUS51 KRNK 292041 FFWRNK VAC173-197-300245- /O.NEW.KRNK.FF.W.0003.170429T2041Z-170430T0245Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service BLACKSBURG VA 441 PM EDT SAT APR 29 2017 The National Weather Service in BLACKSBURG has issued a * Flash Flood Warning for... East central Smyth County in southwestern Virginia... Southwestern Wythe County in southwestern Virginia... * Until 1045 PM EDT Saturday * At 440 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to two inches of rain have already fallen in the past 30 minutes. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Rural Retreat... Mount Rogers National Recreation Area... Sugar Grove... Atkins... and Marion Wytheville. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. When it is safe to do so, please send your reports of flooding, including mudslides or flooded roads, to the National Weather Service by calling toll free at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be shared on the National Weather Service Blacksburg Facebook page and on Twitter. && LAT...LON 3695 8123 3683 8116 3677 8141 3686 8145 $$ RS
2 follow-up statements
489 WGUS71 KRNK 292225 FFSRNK Flash Flood Statement National Weather Service BLACKSBURG VA 625 PM EDT SAT APR 29 2017 VAC173-197-300245- /O.CON.KRNK.FF.W.0003.000000T0000Z-170430T0245Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Smyth VA-Wythe VA- 625 PM EDT SAT APR 29 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT FOR EAST CENTRAL SMYTH AND SOUTHWESTERN WYTHE COUNTIES... At 620 PM EDT, Doppler radar indicated thunderstorms produced heavy rain across the warned area. Up to three inches of rain fell across the warned area. The heaviest of rain has exited the county, but there maybe a few pop up thunderstorm this evening. Some locations that will experience flooding include... Rural Retreat... Mount Rogers National Recreation Area... Sugar Grove... Atkins... and Marion Wytheville. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. When it is safe to do so, please send your reports of flooding, including mudslides or flooded roads, to the National Weather Service by calling toll free at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be shared on the National Weather Service Blacksburg Facebook page and on Twitter. && LAT...LON 3695 8123 3683 8116 3677 8141 3686 8145 $$ RS
372 WGUS71 KRNK 292355 FFSRNK Flash Flood Statement National Weather Service BLACKSBURG VA 755 PM EDT SAT APR 29 2017 VAC173-197-300005- /O.CAN.KRNK.FF.W.0003.000000T0000Z-170430T0245Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Smyth VA-Wythe VA- 755 PM EDT SAT APR 29 2017 ...THE FLASH FLOOD WARNING FOR EAST CENTRAL SMYTH AND SOUTHWESTERN WYTHE COUNTIES IS CANCELLED... Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. When it is safe to do so, please send your reports of flooding, including mudslides or flooded roads, to the National Weather Service by calling toll free at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be shared on the National Weather Service Blacksburg Facebook page and on Twitter. LAT...LON 3695 8123 3683 8116 3677 8141 3686 8145 $$ RS
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 3:26 PM EDT | Special Weather Statement | RNK | Wythe | 64 min |
| Apr 29, 3:36 PM EDT | Special Weather Statement | RNK | Smyth | 54 min |
| Apr 29, 4:07 PM EDT | Special Weather Statement | RNK | Bland | 38 min |
| Apr 29, 4:10 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Smyth, Wythe | 65 min |
| Apr 29, 4:51 PM EDT | Special Weather Statement | RNK | Smyth | 24 min |
| Apr 29, 5:16 PM EDT | Severe Thunderstorm Warning | RNK | Smyth | 36 min |
| Apr 29, 5:23 PM EDT | Special Weather Statement | RNK | Tazewell | 22 min |
| Apr 29, 5:29 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Bath, City of Covington | 43 min |
| Apr 29, 5:48 PM EDT | Severe Thunderstorm Warning | RNK | Smyth | 26 min |
| Apr 29, 6:07 PM EDT | Special Weather Statement | RNK | Tazewell | 23 min |
Nearby
Flash Flood Warnings in Virginia, 2017Every flash flood warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.