Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Nashville, TN

October 1, 2012Putnam County, Tennessee

NWS Nashville, TN issued this special weather statement at Oct 1, 2012, 6:41 PM CDT for Putnam County, Tennessee. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 1, 2012, 6:41 PM CDT (23:41 UTC)
Expired
Oct 1, 2012, 7:15 PM CDT
In force
34 min
Issued by
NWS Nashville, TN

County Putnam County, TN

The radar

The Nashville radar (KOHX), 116 km from the middle of the area, began a volume at 23:41 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.7 hours before the alert went out and 315 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2012-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 512 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2012-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 240 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
512 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
479 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
240 m²/s²
0-3 km storm-relative helicity
301 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Oct 1, 3:56 PM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, Oct 1, 3:56 PM CDT, 2 hours 45 minutes before
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Hazardous weather outlook, Oct 1, 5:50 PM CDT, 51 minutes before
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In the hours before

Local storm report, Oct 1, 6:05 PM CDT, 36 minutes before
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Local storm report, Oct 1, 6:13 PM CDT, 28 minutes before
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Local storm report, Oct 1, 6:19 PM CDT, 22 minutes before
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Local storm report, Oct 1, 6:20 PM CDT, 21 minutes before
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Local storm report, Oct 1, 6:40 PM CDT, 1 minute before
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Special weather statement, Oct 1, 6:41 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 1, 1:46 PM CDTSpecial Weather StatementOHXBedford, Marshall, Rutherford29 min
Oct 1, 2:30 PM CDTSpecial Weather StatementOHXRutherford30 min
Oct 1, 3:18 PM CDTSpecial Weather StatementOHXSmith, Trousdale27 min
Oct 1, 4:05 PM CDTSpecial Weather StatementOHXRutherford25 min
Oct 1, 4:37 PM CDTSpecial Weather StatementOHXCannon23 min
Oct 1, 5:06 PM CDTSpecial Weather StatementOHXSmith, Wilson24 min
Oct 1, 5:13 PM CDTTornado WarningOHXDeKalb, Smith, Trousdale, Wilson32 min
Oct 1, 5:21 PM CDTAreal Flood AdvisoryOHXRutherford, Trousdale, Wilson3 hr
Oct 1, 5:41 PM CDTTornado WarningOHXSmith, Trousdale19 min
Oct 1, 5:57 PM CDTSpecial Weather StatementOHXJackson33 min
Oct 1, 6:06 PM CDTFlash Flood WarningOHXRutherford, Trousdale, Wilson2 hr

Nearby

Special Weather Statements in Tennessee, 2012Every special weather statement 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.