Alert archive / Tennessee / Flash Flood Warnings in 2018

Flash Flood Warning 2, NWS Nashville, TN

March 1, 20184 counties in Tennessee

NWS Nashville, TN issued this flash flood warning at Mar 1, 2018, 7:15 AM CST for 4 counties in Tennessee. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 1, 2018, 7:15 AM CST (13:15 UTC)
Expired: Mar 1, 2018, 10:15 AM CST
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

Counties Hickman County, TN, Lewis County, TN, Maury County, TN, Perry County, TN

The radar

The Nashville radar (KOHX), 112 km from the middle of the area, began a volume at 13:18 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.

What was reported inside it

Time	Report	Where	Remark
Mar 1, 7:30 AM CST	FLASH FLOOD	5 Se Lobelville, TN	WATER RESCUE CONDUCTED ON LOWER CANE CREEK ROAD PER WOPC RADIO
Mar 1, 10:00 AM CST	FLASH FLOOD	2 W Centerville, TN	HICKMAN SPRINGS ROAD FLOODED AND CLOSED

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 1.3 hours before the alert went out and 102 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: -57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

888 
WGUS54 KOHX 011315
FFWOHX
TNC081-101-119-135-011615-
/O.NEW.KOHX.FF.W.0002.180301T1315Z-180301T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
715 AM CST THU MAR 1 2018

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Lewis County in Middle Tennessee...
  Maury County in Middle Tennessee...
  Perry County in Middle Tennessee...
  Hickman County in Middle Tennessee...

* Until 1015 AM CST

* At 715 AM CST, Doppler radar indicated heavy rain will move into 
  the warned area. Three to four inches of rain have already fallen 
  and another one to one and half inches is possible over the next 
  hour. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Columbia, Hohenwald, Centerville, Linden, Spring Hill, Mount
  Pleasant, Lobelville, Gordonsburg, Bon Aqua, Kimmins, Culleoka,
  Flatwoods, Primm Springs, Lyles, I-65 East Of Columbia, Bucksnort,
  Santa Fe, Mousetail Landing State Park, Pinewood and Hampshire.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Stay away or be swept away. River banks and culverts can become
unstable and unsafe.

&&

LAT...LON 3551 8798 3562 8804 3584 8796 3580 8785
      3584 8772 3591 8770 3599 8753 3596 8720
      3585 8721 3571 8678 3553 8685 3541 8696
      3546 8712 3543 8723 3546 8745 3542 8745
      3540 8757 3549 8773 3542 8802 3545 8804

$$

27

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 6:28 PM CST	Areal Flood Advisory	OHX	Bedford, Giles, Hickman, Lawrence, Lewis, Marshall and 3 more	3 hr
Feb 28, 9:13 PM CST	Areal Flood Advisory	OHX	Bedford, Coffee, Giles, Grundy, Hickman, Lawrence and 7 more	12 hr
Feb 28, 9:17 PM CST	River Flood Advisory	OHX	Perry, Wayne	16 hr
Feb 28, 10:45 PM CST	Areal Flood Advisory	OHX	Cheatham, Davidson, Dickson, Hickman, Humphreys, Maury and 2 more	6 hr
Feb 28, 10:52 PM CST	Areal Flood Advisory	OHX	Cannon, Coffee, Davidson, DeKalb, Rutherford, Smith and 4 more	6 hr
Mar 1, 1:29 AM CST	River Flood Advisory	OHX	Bedford	12 hr
Mar 1, 4:42 AM CST	Areal Flood Advisory	OHX	Cheatham, Davidson, Dickson, Hickman, Humphreys, Maury and 2 more	4 hr
Mar 1, 4:44 AM CST	Areal Flood Advisory	OHX	Cannon, Coffee, Davidson, DeKalb, Rutherford, Smith and 4 more	4 hr
Mar 1, 4:47 AM CST	River Flood Advisory	OHX	Coffee	16 hr
Mar 1, 4:49 AM CST	River Flood Advisory	OHX	Bedford	3 hr
Mar 1, 5:20 AM CST	River Flood Advisory	OHX	Marshall	11 hr
Mar 1, 7:03 AM CST	River Flood Advisory	OHX	Grundy	14 hr
Mar 1, 7:06 AM CST	Flash Flood Warning	OHX	Giles, Lawrence, Wayne	3 hr
Mar 1, 7:23 AM CST	Flash Flood Warning	OHX	Bedford, Marshall, Rutherford, Williamson	3 hr
Mar 1, 7:24 AM CST	Flash Flood Warning	OHX	Cannon, Coffee, Grundy, Warren	6 hr
Mar 1, 8:09 AM CST	River Flood Warning	OHX	Bedford	24 hr
Mar 1, 8:09 AM CST	River Flood Warning	OHX	Bedford, Marshall	24 hr
Mar 1, 8:11 AM CST	Areal Flood Advisory	OHX	Cumberland, DeKalb, Putnam, Van Buren, White	4 hr
Mar 1, 8:41 AM CST	River Flood Warning	OHX	Stewart	24 hr
Mar 1, 10:15 AM CST	Flash Flood Warning	OHX	Giles, Lawrence, Wayne	3 hr
Mar 1, 10:17 AM CST	Flash Flood Warning	OHX	Hickman, Lewis, Maury, Perry	3 hr
Mar 1, 10:19 AM CST	Flash Flood Warning	OHX	Bedford, Marshall, Rutherford, Williamson	3 hr
Mar 1, 1:19 PM CST	River Flood Warning	OHX	Perry, Wayne	47 hr
Mar 1, 1:49 PM CST	River Flood Advisory	OHX	Davidson, Williamson	19 hr
Mar 1, 4:17 PM CST	River Flood Warning	OHX	Marshall	38 hr

Nearby

Flash Flood Warnings in Tennessee, 2018 Every flash flood warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.