Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Memphis, TN

May 6, 2012Decatur County, Tennessee

NWS Memphis, TN issued this special weather statement at May 6, 2012, 2:08 AM CDT for Decatur County, Tennessee. It was in force for 37 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
May 6, 2012, 2:08 AM CDT (07:08 UTC)
Expired
May 6, 2012, 2:45 AM CDT
In force
37 min
Issued by
NWS Memphis, TN

County Decatur County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 7.1 hours before the alert went out and 136 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, Nashville Metro, TN at 00:00Z on 2012-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1125 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2012-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.1939Sfc1 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
1125 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
1540 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

182 
WWUS84 KMEG 060708
SPSMEG

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
208 AM CDT SUN MAY 6 2012

TNZ055-060745-
DECATUR TN-
208 AM CDT SUN MAY 6 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 245 AM CDT FOR...

  NORTHEASTERN DECATUR COUNTY IN TENNESSEE...

A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER AND WINDS AT
LEAST 40 MPH WAS LOCATED 4 MILES NORTH OF SUGAR TREE AT 208 AM CDT...
MOVING SOUTHEAST AT 20 MPH.

PEOPLE IN DECATUR COUNTY SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3574 8801 3574 8802 3582 8818 3584 8818
      3585 8807 3582 8802 3582 8796
TIME...MOT...LOC 0708Z 298DEG 16KT 3588 8802

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 2:48 PM CDTSevere Thunderstorm WarningMEGCalhoun, Yalobusha27 min
May 6, 3:12 PM CDTSevere Thunderstorm WarningMEGCalhoun, Yalobusha33 min
May 6, 3:53 PM CDTSevere Thunderstorm WarningMEGCalhoun, Chickasaw, Pontotoc37 min
May 6, 4:35 PM CDTSpecial Weather StatementMEGChickasaw25 min
May 6, 5:30 PM CDTSpecial Weather StatementMEGMonroe30 min
May 6, 6:11 PM CDTSpecial Weather StatementMEGMonroe34 min
May 5, 11:03 PM CDTSpecial Weather StatementMEGWeakley42 min
May 5, 11:28 PM CDTSevere Thunderstorm WarningMEGHenry, Weakley47 min
May 6, 12:23 AM CDTSpecial Weather StatementMEGWeakley37 min
May 6, 12:43 AM CDTSpecial Weather StatementMEGHenry32 min
May 6, 12:45 AM CDTSevere Thunderstorm WarningMEGCarroll, Henderson, Henry, Weakley45 min
May 6, 3:02 AM CDTSpecial Weather StatementMEGCarroll43 min
May 6, 4:02 AM CDTFlash Flood WarningMEGCarroll, Weakley4 hr
May 6, 4:18 AM CDTSpecial Weather StatementMEGCarroll42 min
May 6, 6:58 PM CDTSpecial Weather StatementMEGMississippi32 min
May 6, 5:18 PM CDTSpecial Weather StatementMEGPemiscot27 min
May 6, 5:55 PM CDTSpecial Weather StatementMEGPemiscot35 min
May 6, 6:31 PM CDTSpecial Weather StatementMEGDunklin29 min

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.