Alert archive / Tennessee / Flood Watches in 2013

Flood Watch 3, NWS Nashville, TN

July 3, 201313 counties in Tennessee

NWS Nashville, TN issued this flood watch at Jul 3, 2013, 4:18 AM CDT for 13 counties in Tennessee. It took effect at Jul 4, 2013, 12:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Jul 3, 2013, 4:18 AM CDT (09:18 UTC)
In effect from: Jul 4, 2013, 12:00 AM CDT
Expired: Jul 3, 2013, 2:05 PM CDT
In force
Issued by: NWS Nashville, TN
Flood severity: None

Counties Bedford County, TN, Cannon County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Grundy County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Nashville radar (KOHX), 95 km from the middle of the area, began a volume at 09:22 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

Birmingham, AL (KBMX), launched 00:00Z, 9.3 hours before the alert went out and 323 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: 135 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1523 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

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 Jul 2, 11:53 PM CDT, 4 hours 25 minutes earlier.

Area forecast discussion, Jul 2, 11:53 PM CDT, 4 hours 25 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
Jul 3, 2:05 PM CDT	Flash Flood Watch	OHX	Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 33 more	4 days

Nearby

Flood Watches in Tennessee, 2013 Every flood watch in 2013

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.