Alert archive / Tennessee / Flood Watches in 2015

Flood Watch 5, NWS Nashville, TN

December 24, 201530 counties in Tennessee

NWS Nashville, TN issued this flood watch at Dec 24, 2015, 8:47 PM CST for 30 counties in Tennessee. It took effect at Dec 25, 2015, 6:00 AM CST. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: Dec 24, 2015, 8:47 PM CST (02:47 UTC)
In effect from: Dec 25, 2015, 6:00 AM CST
Expired: Dec 26, 2015, 6:00 AM CST
In force: 24 hr
Issued by: NWS Nashville, TN
Flood severity: None

All 30 counties

Bedford County, TN, Cannon County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Fentress County, TN, Giles County, TN, Grundy County, TN, Hickman 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, Pickett County, TN, Putnam County, TN, Rutherford County, TN, Smith County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 49 km from the middle of the area, began a volume at 02:53 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, 2.8 hours before the alert went out and 42 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: 2047 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 172 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 Dec 24, 8:35 PM CST, 12 minutes earlier.

Area forecast discussion, Dec 24, 8:35 PM CST, 12 minutes before

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Hazardous weather outlook, Dec 24, 5:01 AM CST, 15 hours 46 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
Dec 25, 4:35 AM CST	Special Weather Statement	OHX	Perry, Wayne	40 min
Dec 25, 5:19 AM CST	Special Weather Statement	OHX	Dickson, Hickman, Humphreys, Lewis	41 min
Dec 25, 5:42 AM CST	Special Weather Statement	OHX	Cheatham, Davidson, Williamson	48 min
Dec 25, 6:52 AM CST	Special Weather Statement	OHX	Smith, Trousdale, Wilson	38 min
Dec 25, 6:53 AM CST	Special Weather Statement	OHX	Smith, Trousdale, Wilson	52 min
Dec 25, 7:05 AM CST	Special Weather Statement	OHX	Bedford, Cannon, Coffee	40 min
Dec 25, 7:47 AM CST	Special Weather Statement	OHX	Coffee, Van Buren, Warren	43 min
Dec 25, 7:58 AM CST	Severe Thunderstorm Warning	OHX	Jackson, Overton, Putnam	16 min
Dec 25, 8:26 AM CST	Areal Flood Warning	OHX	Coffee, Cumberland, Fentress, Grundy, Overton, Putnam and 3 more	3 hr
Dec 25, 8:34 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 8:52 AM CST	Areal Flood Advisory	OHX	Bedford, Cannon, Coffee, DeKalb, Giles, Marshall and 4 more	3 hr
Dec 25, 8:59 AM CST	Areal Flood Advisory	OHX	Clay, DeKalb, Fentress, Jackson, Overton, Pickett and 3 more	3 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Giles	47 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Perry	58 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 9:08 AM CST	River Flood Advisory	OHX	Davidson	36 hr
Dec 25, 9:19 AM CST	River Flood Advisory	OHX	Bedford	36 hr
Dec 25, 9:41 AM CST	River Flood Warning	OHX	Davidson	24 hr
Dec 25, 11:30 AM CST	Areal Flood Warning	OHX	Coffee, Cumberland, Fentress, Grundy, Overton, Putnam and 3 more	3 hr
Dec 25, 11:52 AM CST	Areal Flood Warning	OHX	Bedford, Cannon, Coffee, DeKalb, Giles, Grundy and 8 more	3 hr
Dec 25, 11:59 AM CST	Areal Flood Advisory	OHX	Clay, DeKalb, Fentress, Jackson, Overton, Pickett and 3 more	3 hr
Dec 25, 2:28 PM CST	Areal Flood Warning	OHX	Bedford, Cannon, Coffee, Cumberland, DeKalb, Giles and 6 more	3 hr
Dec 25, 5:29 PM CST	Areal Flood Warning	OHX	Bedford, Cannon, Coffee, Cumberland, DeKalb, Fentress and 13 more	3 hr

Nearby

Flood Watches in Tennessee, 2015 Every flood watch in 2015

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.