Alert archive / Tennessee / Areal Flood Warnings in 2017
Areal Flood Warning 3, NWS Nashville, TN
NWS Nashville, TN issued this areal flood warning at Aug 11, 2017, 6:05 PM CDT for Giles County, Tennessee. It was in force for 3 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
- Aug 11, 2017, 6:05 PM CDT (23:05 UTC)
- Expired
- Aug 11, 2017, 9:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Flood severity
- None
County Giles County, TN
The radar
The Northeast Alabama radar (KHTX), 92 km from the middle of the area, began a volume at 23:08 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
Nashville Metro, TN (KBNA), launched 12:00Z, 11.1 hours before the alert went out and 110 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
- 732 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 766 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 9:43 PM CDT | Special Weather Statement | OHX | Lawrence | 32 min |
| Aug 10, 10:14 PM CDT | Areal Flood Advisory | OHX | Lawrence, Wayne | 2 hr |
| Aug 10, 11:21 PM CDT | Areal Flood Advisory | OHX | Giles, Lawrence | 114 min |
| Aug 11, 1:47 PM CDT | Areal Flood Advisory | OHX | Marshall | 118 min |
| Aug 11, 2:59 PM CDT | Areal Flood Advisory | OHX | Marshall, Maury | 2 hr |
| Aug 11, 3:20 PM CDT | Flash Flood Warning | OHX | Marshall | 3 hr |
| Aug 11, 5:33 PM CDT | Special Weather Statement | OHX | Giles, Lawrence | 57 min |
Nearby
Areal Flood Warnings in Tennessee, 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.