Alert archive / North Carolina / Areal Flood Warnings in 2017
Areal Flood Warning 4, NWS Blacksburg, VA
NWS Blacksburg, VA issued this areal flood warning at Apr 23, 2017, 8:59 PM EDT for Alleghany County, Wilkes County, North Carolina. It was in force for 16 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 23, 2017, 8:59 PM EDT (00:59 UTC)
- Expired
- Apr 24, 2017, 12:29 PM EDT
- In force
- 16 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Alleghany County, NC, Wilkes County, NC
The radar
The Roanoke radar (KFCX), 108 km from the middle of the area, began a volume at 00:59 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 00:00Z, 1.0 hours before the alert went out and 116 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 544 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 246 m²/s²
- 0-3 km storm-relative helicity
- 516 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 Apr 23, 7:36 PM EDT, 1 hour 23 minutes earlier.
Area forecast discussion, Apr 23, 7:36 PM EDT, 1 hour 23 minutes before
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</html>Hazardous weather outlook, Apr 23, 4:03 PM EDT, 4 hours 56 minutes before
Hazardous Weather Outlook National Weather Service Blacksburg VA 403 PM EDT Sun Apr 23 2017 NCZ001>006-018>020-VAZ007-009>018-022-023-032>034-043>046-058-059- WVZ042-241200- Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes- Yadkin-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Grayson- Carroll-Floyd-Craig-Roanoke-Botetourt-Patrick-Franklin-Bedford-Henry- Pittsylvania-Campbell-Appomattox-Halifax-Charlotte-Mercer- 403 PM EDT Sun Apr 23 2017 ...FLOOD WATCH IN EFFECT THROUGH MONDAY EVENING... 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. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. VAZ019-020-024-035-047-WVZ043-044-507-508-241200- Alleghany VA-Bath-Rockbridge-Amherst-Buckingham-Summers-Monroe- Eastern Greenbrier-Western Greenbrier- 403 PM EDT Sun Apr 23 2017 This Hazardous Weather Outlook is for central Virginia, west central Virginia and southeast West Virginia. .DAY ONE...Tonight. Rainfall may become heavy at times this evening and tonight, which could cause localized flooding. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Rain will persist into early Tuesday. The rainfall from the past couple of days through Tuesday could lead to rises on creeks, streams and rivers, with localized minor flooding possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Apr 23, 7:44 PM EDT, 1 hour 15 minutes before
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</html>Local storm report, Apr 23, 8:36 PM EDT, 23 minutes before
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</html>Local storm report, Apr 23, 8:39 PM EDT, 20 minutes before
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</html>Local storm report, Apr 23, 8:43 PM EDT, 16 minutes before
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</html>Local storm report, Apr 23, 8:55 PM EDT, 4 minutes before
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</html>The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 8:25 PM EDT | Flash Flood Warning | RNK | Bland, Smyth, Tazewell, Wythe | 10 hr |
| Apr 23, 11:25 PM EDT | Areal Flood Advisory | RNK | Carroll, Grayson, Wythe | 12 hr |
| Apr 24, 1:02 AM EDT | River Flood Warning | RNK | Pittsylvania, City of Danville | 3 days |
| Apr 24, 1:02 AM EDT | River Flood Warning | RNK | Halifax | 4 days |
| Apr 24, 1:02 AM EDT | River Flood Warning | RNK | Halifax | 5 days |
| Apr 24, 6:18 AM EDT | Areal Flood Advisory | RNK | Bland, Grayson, Smyth, Tazewell, Wythe | 6 hr |
| Apr 24, 6:31 AM EDT | Areal Flood Advisory | RNK | Floyd, Giles, Montgomery, Pulaski, City of Radford | 12 hr |
| Apr 24, 6:42 AM EDT | Areal Flood Advisory | RNK | Patrick | 6 hr |
| Apr 24, 9:40 AM EDT | Areal Flood Advisory | RNK | Roanoke, City of Roanoke, City of Salem | 12 hr |
| Apr 24, 10:37 AM EDT | River Flood Warning | RNK | Montgomery, Pulaski, City of Radford | 30 hr |
| Apr 24, 12:57 PM EDT | Areal Flood Advisory | RNK | Wythe | 6 hr |
| Apr 24, 2:53 PM EDT | River Flood Warning | RNK | Giles | 34 hr |
| Apr 24, 3:30 PM EDT | River Flood Warning | RNK | Charlotte, Halifax | 4 days |
| Apr 24, 6:25 PM EDT | Areal Flood Advisory | RNK | Giles, Pulaski | 6 hr |
| Apr 24, 6:53 PM EDT | Areal Flood Advisory | RNK | Wythe | 6 hr |
| Apr 24, 2:15 AM EDT | Areal Flood Advisory | RNK | Watauga | 6 hr |
| Apr 24, 3:40 AM EDT | Flash Flood Warning | RNK | Wilkes | 6 hr |
| Apr 24, 5:04 AM EDT | River Flood Warning | RNK | Surry, Yadkin | 29 hr |
| Apr 24, 6:43 PM EDT | Areal Flood Warning | RNK | Caswell, Rockingham, Stokes | 12 hr |
| Apr 24, 5:20 AM EDT | Areal Flood Advisory | RNK | Mercer | 6 hr |
| Apr 24, 11:17 AM EDT | Areal Flood Advisory | RNK | Mercer, Summers | 6 hr |
| Apr 24, 5:15 PM EDT | Areal Flood Advisory | RNK | Mercer, Summers | 6 hr |
Nearby
Areal Flood Warnings in North Carolina, 2017Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.