Alert archive / Tennessee / Flash Flood Warnings in 2019

Flash Flood Warning 49, NWS Nashville, TN

July 13, 20194 counties in Tennessee

NWS Nashville, TN issued this flash flood warning at Jul 13, 2019, 9:09 PM CDT for 4 counties in 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 outline as issued.

The facts

Issued: Jul 13, 2019, 9:09 PM CDT (02:09 UTC)
Expired: Jul 14, 2019, 12:15 AM CDT
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

Counties DeKalb County, TN, Putnam County, TN, Smith County, TN, White County, TN

The radar

The Nashville radar (KOHX), 106 km from the middle of the area, began a volume at 02:11 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, 2.2 hours before the alert went out and 106 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: 1752 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1517 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: -24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.7

Open this sounding in Storm Lab

The text

As transmitted.

127 
WGUS54 KOHX 140209
FFWOHX
TNC041-141-159-185-140515-
/O.NEW.KOHX.FF.W.0049.190714T0209Z-190714T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
909 PM CDT Sat Jul 13 2019

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Southeastern Smith County in Middle Tennessee...
  Northeastern De Kalb County in Middle Tennessee...
  White County in Middle Tennessee...
  Southwestern Putnam County in Middle Tennessee...

* Until 1215 AM CDT.

* At 909 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Sparta, Carthage, Baxter, Hamptons Crossroads, Bakers Crossroads,
  Virgin Falls State Natural Area and Burgess Falls State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3627 8584 3625 8582 3623 8571 3606 8542
      3604 8530 3599 8531 3598 8526 3597 8526
      3592 8525 3591 8521 3589 8523 3582 8524
      3580 8526 3577 8525 3577 8526 3578 8527
      3582 8527 3580 8534 3602 8575 3629 8597

$$

Whitehead

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 7:00 PM CDT	Areal Flood Advisory	OHX	Cumberland, Fentress, Overton, Putnam	3 hr
Jul 13, 7:22 PM CDT	Areal Flood Advisory	OHX	Montgomery, Robertson	113 min
Jul 13, 7:37 PM CDT	Areal Flood Advisory	OHX	Jackson, Overton, Putnam	113 min
Jul 13, 7:58 PM CDT	Special Weather Statement	OHX	Putnam	47 min
Jul 13, 8:21 PM CDT	Flash Flood Warning	OHX	Jackson, Overton, Putnam	4 hr
Jul 13, 8:27 PM CDT	Special Weather Statement	OHX	DeKalb	33 min
Jul 13, 8:37 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Putnam, White	23 min
Jul 13, 8:56 PM CDT	Flash Flood Warning	OHX	Cheatham, Dickson, Montgomery, Robertson	3 hr
Jul 13, 8:58 PM CDT	Flash Flood Warning	OHX	Clay, Jackson, Macon, Overton, Smith, Trousdale	3 hr
Jul 13, 8:58 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Putnam, White	37 min
Jul 13, 10:13 PM CDT	Areal Flood Advisory	OHX	Macon, Sumner	2 hr
Jul 14, 4:16 PM CDT	Special Weather Statement	OHX	Wayne	44 min
Jul 14, 4:27 PM CDT	Areal Flood Advisory	OHX	Wayne	3 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.