Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Nashville, TN

June 28, 2021Robertson County, Tennessee

NWS Nashville, TN issued this special weather statement at Jun 28, 2021, 3:00 PM CDT for Robertson County, Tennessee. It was in force for 30 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
Jun 28, 2021, 3:00 PM CDT (20:00 UTC)
Expired
Jun 28, 2021, 3:30 PM CDT
In force
30 min
Issued by
NWS Nashville, TN

County Robertson County, TN

The radar

The Nashville radar (KOHX), 25 km from the middle of the area, began a volume at 20:03 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 12:00Z, 8.0 hours before the alert went out and 34 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 12:00Z on 2021-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 78 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 12:00Z on 2021-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -38 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
78 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
1282 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-38 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

844 
WWUS84 KOHX 282000
SPSOHX

Special Weather Statement
National Weather Service Nashville TN
300 PM CDT Mon Jun 28 2021
 
TNZ007-008-027-282030-
Robertson TN-Davidson TN-Sumner TN-
300 PM CDT Mon Jun 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN DAVIDSON...WEST CENTRAL
SUMNER AND SOUTH CENTRAL ROBERTSON COUNTIES UNTIL 330 PM CDT...

At 258 PM CDT, trained weather spotters reported pea size hail with 
a strong thunderstorm near Ridgetop, or 9 miles southeast of 
Springfield, moving northwest at 10 mph.

Pea size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Springfield, Goodlettsville, Millersville, Greenbrier and Ridgetop. 

This includes Interstate 65 between mile markers 98 and 105.
 
LAT...LON 3635 8667 3632 8676 3649 8692 3656 8675
TIME...MOT...LOC 1958Z 153DEG 9KT 3640 8675 

$$

Shamburger

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 6:07 PM CDTSpecial Weather StatementOHXWarren23 min
Jun 28, 6:36 PM CDTSpecial Weather StatementOHXCoffee24 min

Nearby

Special Weather Statements in Tennessee, 2021Every special weather statement in 2021

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.