Alert archive / Tennessee / Areal Flood Advisories in 2021
Areal Flood Advisory 111, NWS Nashville, TN
NWS Nashville, TN issued this areal flood advisory at Aug 28, 2021, 12:47 PM CDT for Fentress County, Overton County, Pickett County, Tennessee. It was in force for 118 min.
The area
The counties it named.
The facts
- Issued
- Aug 28, 2021, 12:47 PM CDT (17:47 UTC)
- Expired
- Aug 28, 2021, 2:45 PM CDT
- In force
- 118 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
Counties Fentress County, TN, Overton County, TN, Pickett County, TN
The radar
The Nashville radar (KOHX), 133 km from the middle of the area, began a volume at 17:51 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, 5.8 hours before the alert went out and 139 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
- 1024 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1035 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 53 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 advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Nashville, TN wrote its last area forecast discussion before this areal flood advisory went out at Aug 28, 12:39 PM CDT, 8 minutes earlier.
Area forecast discussion, Aug 28, 12:39 PM CDT, 8 minutes before
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</html>Hazardous weather outlook, Aug 28, 5:00 AM CDT, 7 hours 47 minutes before
Hazardous Weather Outlook National Weather Service Nashville TN 500 AM CDT Sat Aug 28 2021 TNZ005>011-023>034-056>066-075-077>080-093>095-291000- Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston- Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson- Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-Maury- Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee- Warren-Grundy-Van Buren-Wayne-Lawrence-Giles- 500 AM CDT Sat Aug 28 2021 This Hazardous Weather Outlook is for Middle Tennessee. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Hurricane Ida is forecast to make landfall in Louisiana on Sunday night, then turn northeast and weaken to a Tropical Depression as it moves near or across Middle Tennessee from Tuesday into Wednesday. Although the amount of rainfall we receive will be highly dependent on the track of Ida, current indications are that 2 to 4 inches of rain, with some locally higher amounts, is possible during this timeframe. This may lead to localized flooding issues. In addition, damaging wind gusts and an isolated tornadoes cannot be ruled out as the remnant low crosses our area. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed next Tuesday & Wednesday depending on the future track of Hurricane Ida. Adcock
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 2:26 PM CDT | Areal Flood Advisory | OHX | Jackson, Putnam | 2 hr |
| Aug 28, 3:46 PM CDT | Areal Flood Advisory | OHX | Sumner, Wilson | 74 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.