Alert archive / Tennessee / Flash Flood Warnings in 2019

Flash Flood Warning 39, NWS Nashville, TN

June 9, 2019Smith County, Tennessee

NWS Nashville, TN issued this flash flood warning at Jun 9, 2019, 8:56 PM CDT for Smith County, Tennessee. It was in force for 94 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 9, 2019, 8:56 PM CDT (01:56 UTC)
Expired: Jun 9, 2019, 10:30 PM CDT
In force: 94 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

County Smith County, TN

The radar

The Nashville radar (KOHX), 59 km from the middle of the area, began a volume at 01:54 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 00:00Z, 1.9 hours before the alert went out and 66 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: 295 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 910 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: -23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

531 
WGUS54 KOHX 100156
FFWOHX
TNC159-100330-
/O.NEW.KOHX.FF.W.0039.190610T0156Z-190610T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
856 PM CDT Sun Jun 9 2019

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Northern Smith County in Middle Tennessee...

* Until 1030 PM CDT.

* At 855 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Radar estimates up to 2 inches 
  of rain have fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Pleasant Shade.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3642 8590 3641 8583 3638 8583 3626 8588
      3629 8606 3640 8599 3640 8598 3642 8597

$$

Barnwell

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:04 PM CDT	Areal Flood Advisory	OHX	Bedford, Marshall, Maury, Williamson	116 min
Jun 9, 8:28 PM CDT	Areal Flood Advisory	OHX	Macon, Smith	2 hr
Jun 9, 9:54 PM CDT	Areal Flood Advisory	OHX	Fentress, Pickett	2 hr

Nearby

Flash Flood Warnings in Tennessee, 2019 Every flash flood warning in 2019

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.