Alert archive / Tennessee / Special Weather Statements in 2018

Special Weather Statement, NWS Memphis, TN

May 5, 2018Shelby County, Tennessee

NWS Memphis, TN issued this special weather statement at May 5, 2018, 4:13 PM CDT for Shelby County, Tennessee. It was in force for 32 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 5, 2018, 4:13 PM CDT (21:13 UTC)
Expired: May 5, 2018, 4:45 PM CDT
In force: 32 min
Issued by: NWS Memphis, TN

County Shelby County, TN

The radar

The Memphis radar (KNQA), 29 km from the middle of the area, began a volume at 21:15 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, 9.2 hours before the alert went out and 327 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: 277 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 453 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -48 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 4:14 PM CDT	Special Weather Statement	MEG	Fayette	31 min
May 5, 4:32 PM CDT	Special Weather Statement	MEG	Marshall	28 min
May 5, 4:44 PM CDT	Special Weather Statement	MEG	Benton	31 min
May 5, 5:05 PM CDT	Special Weather Statement	MEG	Marshall	25 min
May 5, 5:14 PM CDT	Special Weather Statement	MEG	Tippah	31 min
May 5, 5:46 PM CDT	Special Weather Statement	MEG	Marshall	29 min
May 5, 6:05 PM CDT	Special Weather Statement	MEG	Itawamba	25 min

Nearby

Special Weather Statements in Tennessee, 2018 Every special weather statement in 2018

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.