Alert archive / Tennessee / Flash Flood Warnings in 2010

Flash Flood Warning 213, NWS Memphis, TN

July 11, 2010Lake County, Obion County, Tennessee

NWS Memphis, TN issued this flash flood warning at Jul 11, 2010, 6:52 PM CDT for Lake County, Obion County, Tennessee. It was in force for 3 hr. 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 11, 2010, 6:52 PM CDT (23:52 UTC)
Expired: Jul 11, 2010, 9:45 PM CDT
In force: 3 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Lake County, TN, Obion County, TN

The radar

The Paducah radar (KPAH), 94 km from the middle of the area, began a volume at 23:53 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

Springfield, MO (KSGF), launched 12:00Z, 11.9 hours before the alert went out and 404 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: 1329 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 876 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jul 11, 2:12 PM CDT, 4 hours 40 minutes earlier.

Area forecast discussion, Jul 11, 2:12 PM CDT, 4 hours 40 minutes before

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Hazardous weather outlook, Jul 11, 2:27 PM CDT, 4 hours 25 minutes before

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In the hours before

Special weather statement, Jul 11, 3:48 PM CDT, 3 hours 4 minutes before

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Special weather statement, Jul 11, 3:54 PM CDT, 2 hours 58 minutes before

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Special weather statement, Jul 11, 5:00 PM CDT, 1 hour 52 minutes before

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Special weather statement, Jul 11, 5:01 PM CDT, 1 hour 51 minutes before

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Special weather statement, Jul 11, 5:47 PM CDT, 1 hour 5 minutes before

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Special weather statement, Jul 11, 6:22 PM CDT, 30 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 5:06 PM CDT	Severe Thunderstorm Warning	MEG	Lake, Obion	39 min
Jul 11, 6:22 PM CDT	Areal Flood Advisory	MEG	Lake, Obion	3 hr

Nearby

Flash Flood Warnings in Tennessee, 2010 Every flash flood warning in 2010

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.