Alert archive / Tennessee / Freeze Watches in 2012

Freeze Watch 3, NWS Nashville, TN

October 31, 201229 counties in Tennessee

NWS Nashville, TN issued this freeze watch at Oct 31, 2012, 3:09 AM CDT for 29 counties in Tennessee. It took effect at Nov 1, 2012, 1:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Oct 31, 2012, 3:09 AM CDT (08:09 UTC)
In effect from: Nov 1, 2012, 1:00 AM CDT
Expired: Oct 31, 2012, 11:00 AM CDT
In force
Issued by: NWS Nashville, TN

All 29 counties

Bedford County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Grundy County, TN, Houston County, TN, Jackson County, TN, Macon County, TN, Montgomery County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 37 km from the middle of the area, began a volume at 08:14 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, 8.2 hours before the alert went out and 38 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: 3053 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 215 m²/s²
0-3 km storm-relative helicity: 249 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 freeze 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 freeze watch went out at Oct 30, 11:33 PM CDT, 3 hours 36 minutes earlier.

Area forecast discussion, Oct 30, 11:33 PM CDT, 3 hours 36 minutes before

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Hazardous weather outlook, Oct 30, 7:54 PM CDT, 7 hours 15 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
Oct 31, 11:00 AM CDT	Freeze Warning	OHX	Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 33 more	21 hr

Nearby

Freeze Watches in Tennessee, 2012 Every freeze watch in 2012

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.