Alert archive / Virginia / Flash Flood Warnings in 2018
Flash Flood Warning 2, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at May 15, 2018, 2:03 PM EDT for 5 counties in Virginia. It was in force for 3 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
- May 15, 2018, 2:03 PM EDT (18:03 UTC)
- Expired
- May 15, 2018, 4:50 PM EDT
- In force
- 3 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Carroll County, VA, Grayson County, VA, Pulaski County, VA, Smyth County, VA, Wythe County, VA
The radar
The Roanoke radar (KFCX), 85 km from the middle of the area, began a volume at 18:03 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 |
|---|---|---|---|
| May 15, 3:45 PM EDT | FLASH FLOOD | 5 Ese Speedwell, VA | BRUSH CREEK REPORTED OUT OF ITS BANKS, WITH WATER OVER BRUSH CREEK ROAD IN SPOTS. |
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, 6.1 hours before the alert went out and 136 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
- 258 J/kg
- Mixed-layer CIN
- -163 J/kg
- Mixed-layer LCL
- 910 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -50 m²/s²
- 0-3 km storm-relative helicity
- -23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
529 WGUS51 KRNK 151803 FFWRNK VAC035-077-155-173-197-160000- /O.NEW.KRNK.FF.W.0002.180515T1803Z-180516T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service BLACKSBURG VA 203 PM EDT TUE MAY 15 2018 The National Weather Service in BLACKSBURG has issued a * Flash Flood Warning for... Southwestern Pulaski County in southwestern Virginia... Southeastern Smyth County in southwestern Virginia... Southern Wythe County in southwestern Virginia... Northwestern Carroll County in southwestern Virginia... Central Grayson County in southwestern Virginia... * Until 800 PM EDT * At 201 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to one to two inches of rain has already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Fries... Max Meadows... Patterson... Speedwell... and Sugar Grove. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3659 8142 3673 8153 3703 8081 3681 8065 $$ JR
2 follow-up statements
808 WGUS71 KRNK 151939 FFSRNK Flash Flood Statement National Weather Service BLACKSBURG VA 339 PM EDT TUE MAY 15 2018 VAC035-077-155-173-197-160000- /O.CON.KRNK.FF.W.0002.000000T0000Z-180516T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pulaski VA-Smyth VA-Wythe VA-Carroll VA-Grayson VA- 339 PM EDT TUE MAY 15 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR SOUTHWESTERN PULASKI...SOUTHEASTERN SMYTH...SOUTHERN WYTHE... NORTHWESTERN CARROLL AND CENTRAL GRAYSON COUNTIES... At 333 PM EDT, Doppler radar indicated that the thunderstorms producing heavy rain had mostly moved south of the warned area. Up to two or more inches of rain have fallen and runoff will continue for a few more hours continuing the flooding threat. No reports of flooding have been received from the warned area. Some locations that will experience flooding include... Fries... Max Meadows... Patterson... Speedwell... and Sugar Grove. PRECAUTIONARY/PREPAREDNESS ACTIONS... In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. When it is safe to do so, please send your reports of flooding, including mudslides or flooded roads, to the National Weather Service by calling toll free at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be shared on the National Weather Service Blacksburg Facebook page and on Twitter. && LAT...LON 3659 8142 3673 8153 3703 8081 3681 8065 $$ PC
661 WGUS71 KRNK 152050 FFSRNK Flash Flood Statement National Weather Service BLACKSBURG VA 450 PM EDT TUE MAY 15 2018 VAC035-077-155-173-197-152100- /O.CAN.KRNK.FF.W.0002.000000T0000Z-180516T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pulaski VA-Smyth VA-Wythe VA-Carroll VA-Grayson VA- 450 PM EDT TUE MAY 15 2018 ...THE FLASH FLOOD WARNING FOR SOUTHWESTERN PULASKI...SOUTHEASTERN SMYTH...SOUTHERN WYTHE... NORTHWESTERN CARROLL AND CENTRAL GRAYSON COUNTIES IS CANCELLED... The heavy rain has ended. 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 3659 8142 3673 8153 3703 8081 3681 8065 $$ PC
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 1:40 PM EDT | Special Weather Statement | RNK | Grayson, Wythe | 35 min |
| May 15, 2:09 PM EDT | Severe Thunderstorm Warning | RNK | Botetourt, Craig, Montgomery, Roanoke | 51 min |
| May 15, 2:13 PM EDT | Special Weather Statement | RNK | Giles | 47 min |
| May 15, 2:28 PM EDT | Special Weather Statement | RNK | Bland | 32 min |
| May 15, 2:58 PM EDT | Special Weather Statement | RNK | Botetourt, Craig, Roanoke, City of Roanoke, City of Salem | 47 min |
| May 15, 3:11 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Botetourt, Craig, Franklin, Roanoke, City of Roanoke and 1 more | 64 min |
| May 15, 3:18 PM EDT | Areal Flood Advisory | RNK | Botetourt, Roanoke, City of Roanoke, City of Salem | 3 hr |
| May 15, 3:25 PM EDT | Special Weather Statement | RNK | Franklin | 50 min |
| May 15, 3:38 PM EDT | Severe Thunderstorm Warning | RNK | Floyd, Franklin, Montgomery | 67 min |
| May 15, 3:40 PM EDT | Special Weather Statement | RNK | Bland | 50 min |
| May 15, 3:56 PM EDT | Flash Flood Warning | RNK | Botetourt, Roanoke, City of Roanoke, City of Salem | 87 min |
| May 15, 4:26 PM EDT | Special Weather Statement | RNK | Patrick | 64 min |
| May 15, 5:03 PM EDT | Special Weather Statement | RNK | Bath | 27 min |
| May 15, 6:17 PM EDT | Special Weather Statement | RNK | Tazewell | 58 min |
Nearby
Flash Flood Warnings in Virginia, 2018Every flash flood warning in 2018
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.