Alert archive / Tennessee / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 137, NWS Memphis, TN

July 26, 2007Shelby County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Jul 26, 2007, 6:11 PM CDT for Shelby County, Tennessee. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 26, 2007, 6:11 PM CDT (23:11 UTC)
Expired: Jul 26, 2007, 7:00 PM CDT
In force: 49 min
Issued by: NWS Memphis, TN
Area: Counties, with a storm outline in the text

County Shelby County, TN

The radar

The Memphis radar (KNQA), 18 km from the middle of the area, began a volume at 23:12 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, 11.2 hours before the alert went out and 316 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: 1476 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 752 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 84 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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 3:20 PM CDT, 2 hours 51 minutes earlier.

Area forecast discussion, Jul 26, 3:20 PM CDT, 2 hours 51 minutes before

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Hazardous weather outlook, Jul 26, 2:29 PM CDT, 3 hours 42 minutes before

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In the hours before

Special weather statement, Jul 26, 3:02 PM CDT, 3 hours 9 minutes before

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Special weather statement, Jul 26, 3:03 PM CDT, 3 hours 8 minutes before

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Special weather statement, Jul 26, 5:39 PM CDT, 32 minutes before

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Nearby

Severe Thunderstorm Warnings in Tennessee, 2007 Every severe thunderstorm warning in 2007

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.