Alert archive / Tennessee / Areal Flood Advisories in 2021
Areal Flood Advisory 42, NWS Nashville, TN
NWS Nashville, TN issued this areal flood advisory at Jul 11, 2021, 6:18 PM CDT for Cumberland County, White County, Tennessee. It was in force for 117 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 2021, 6:18 PM CDT (23:18 UTC)
- Expired
- Jul 11, 2021, 8:15 PM CDT
- In force
- 117 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
Counties Cumberland County, TN, White County, TN
The radar
The Nashville radar (KOHX), 125 km from the middle of the area, began a volume at 23:18 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, 11.3 hours before the alert went out and 125 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
- 343 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 642 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 158 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 4:37 PM CDT | Special Weather Statement | OHX | Van Buren, Warren, White | 23 min |
Nearby
Areal Flood Advisories in Tennessee, 2021Every areal flood advisory in 2021
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.