Alert archive / Tennessee / Flood Watches in 2023

Flood Watch 2, NWS Nashville, TN

April 5, 202327 counties in Tennessee

NWS Nashville, TN issued this flood watch at Apr 5, 2023, 1:58 PM CDT for 27 counties in Tennessee. It took effect at Apr 5, 2023, 11:00 PM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Apr 5, 2023, 1:58 PM CDT (18:58 UTC)
In effect from: Apr 5, 2023, 11:00 PM CDT
Expired: Apr 6, 2023, 9:26 AM CDT
In force: 10 hr
Issued by: NWS Nashville, TN
Flood severity: None

All 27 counties

Bedford County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Giles County, TN, Hickman County, TN, Humphreys County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Overton County, TN, Perry County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Wayne County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 32 km from the middle of the area, began a volume at 18:58 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, 7.0 hours before the alert went out and 19 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 57 J/kg
Mixed-layer CIN: -339 J/kg
Mixed-layer LCL: 1182 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 296 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch 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 flood watch went out at Apr 5, 12:27 PM CDT, 1 hour 31 minutes earlier.

Area forecast discussion, Apr 5, 12:27 PM CDT, 1 hour 31 minutes before

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The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 5, 2:13 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	47 min
Apr 5, 2:27 PM CDT	Special Weather Statement	OHX	Humphreys	18 min
Apr 5, 2:45 PM CDT	Special Weather Statement	OHX	Houston, Humphreys, Stewart	30 min
Apr 5, 2:49 PM CDT	Special Weather Statement	OHX	Perry	26 min
Apr 5, 2:54 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Humphreys, Perry	21 min
Apr 5, 3:06 PM CDT	Special Weather Statement	OHX	Montgomery, Stewart	39 min
Apr 5, 3:14 PM CDT	Special Weather Statement	OHX	Dickson	46 min
Apr 5, 3:24 PM CDT	Special Weather Statement	OHX	Hickman	36 min
Apr 5, 3:28 PM CDT	Special Weather Statement	OHX	Wayne	17 min
Apr 5, 3:36 PM CDT	Special Weather Statement	OHX	Cheatham	39 min
Apr 5, 3:41 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence, Lewis, Wayne	34 min
Apr 5, 3:47 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson	43 min
Apr 5, 3:50 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Williamson	40 min
Apr 5, 4:06 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner, Wilson	24 min
Apr 5, 4:14 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence, Lewis, Maury	31 min
Apr 5, 4:24 PM CDT	Severe Thunderstorm Warning	OHX	Sumner, Wilson	36 min
Apr 5, 4:26 PM CDT	Special Weather Statement	OHX	Wilson	49 min
Apr 5, 4:31 PM CDT	Severe Thunderstorm Warning	OHX	Williamson	16 min
Apr 5, 4:36 PM CDT	Special Weather Statement	OHX	Maury	24 min
Apr 5, 4:50 PM CDT	Special Weather Statement	OHX	Macon, Trousdale	25 min
Apr 5, 5:23 PM CDT	Special Weather Statement	OHX	Giles	37 min
Apr 5, 5:31 PM CDT	Special Weather Statement	OHX	Giles	44 min

Nearby

Flood Watches in Tennessee, 2023 Every flood watch in 2023

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.