Alert archive / Tennessee / Areal Flood Warnings in 2016

Areal Flood Warning 3, NWS Nashville, TN

May 11, 20168 counties in Tennessee

NWS Nashville, TN issued this areal flood warning at May 11, 2016, 11:57 AM CDT for 8 counties in Tennessee. It was in force for 6 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: May 11, 2016, 11:57 AM CDT (16:57 UTC)
Expired: May 11, 2016, 5:45 PM CDT
In force: 6 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

Counties Clay County, TN, Jackson County, TN, Macon County, TN, Robertson County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 43 km from the middle of the area, began a volume at 16:59 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, 5.0 hours before the alert went out and 53 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: 1524 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 790 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 6.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Nashville, TN wrote its last area forecast discussion before this areal flood warning went out at May 11, 11:50 AM CDT, 7 minutes earlier.

Area forecast discussion, May 11, 11:50 AM CDT, 7 minutes before

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Hazardous weather outlook, May 11, 5:01 AM CDT, 6 hours 56 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
501 AM CDT WED MAY 11 2016

TNZ005>011-023>034-056>066-075-077>080-093>095-121015-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-HOUSTON-
HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-SMITH-
JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS-WILLIAMSON-
MAURY-MARSHALL-RUTHERFORD-CANNON-DE KALB-WHITE-CUMBERLAND-BEDFORD-
COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-GILES-
501 AM CDT WED MAY 11 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE
TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THERE IS A MARGINAL RISK FOR SEVERE THUNDERSTORMS TODAY ACROSS
NORTHERN MIDDLE TENNESSEE...MAINLY THIS MORNING.

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TODAY MAINLY
ACROSS AREAS ALONG AND NORTH OF I-40. A FEW STORMS COULD BE
STRONG TO POSSIBLY SEVERE WITH LARGE HAIL OR DAMAGING WINDS.
FLASH FLOODING IS ALSO POSSIBLE AS SOME AREAS RECEIVED BETWEEN 2
AND 6 INCHES OF RAINFALL TUESDAY NIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A MARGINAL RISK FOR SEVERE THUNDERSTORMS ACROSS MIDDLE
TENNESSEE ON THURSDAY INTO THURSDAY NIGHT.

A COLD FRONT WILL MOVE ACROSS MIDDLE TENNESSEE LATE THURSDAY.
AHEAD OF THE FRONT...SCATTERED TO NUMEROUS SHOWERS AND
THUNDERSTORMS ARE EXPECTED. A FEW STORMS MAY BE STRONG OR
POSSIBLY SEVERE...WITH DAMAGING WINDS AND LARGE HAIL THE MAIN
THREATS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS MORNING...AND AGAIN ON
THURSDAY INTO THURSDAY NIGHT.

SPOTTER THUNDERSTORM REPORTING CRITERIA...
TORNADO
FUNNEL CLOUD
FLOODING
HAIL >= 1/2 INCH
WINDS > 50 MPH
STRUCTURAL DAMAGE
TREES OR POWER LINE DOWN

55

In the hours before

Special weather statement, May 11, 9:41 AM CDT, 2 hours 16 minutes before

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Local storm report, May 11, 9:56 AM CDT, 2 hours 1 minute before

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Local storm report, May 11, 10:19 AM CDT, 1 hour 38 minutes before

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Local storm report, May 11, 10:39 AM CDT, 1 hour 18 minutes before

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Local storm report, May 11, 10:52 AM CDT, 1 hour 5 minutes before

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Local storm report, May 11, 10:56 AM CDT, 1 hour 1 minute before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:17 PM CDT	Special Weather Statement	OHX	Stewart	43 min
May 10, 7:51 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery	24 min
May 10, 8:01 PM CDT	Tornado Warning	OHX	Montgomery	29 min
May 10, 8:14 PM CDT	Special Weather Statement	OHX	Stewart	46 min
May 10, 8:26 PM CDT	Tornado Warning	OHX	Montgomery	34 min
May 10, 8:41 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Montgomery, Stewart	34 min
May 10, 8:47 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Robertson	28 min
May 10, 9:06 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	24 min
May 10, 9:13 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Montgomery	47 min
May 10, 9:16 PM CDT	Special Weather Statement	OHX	Robertson	44 min
May 10, 9:18 PM CDT	Severe Thunderstorm Warning	OHX	Robertson, Sumner	27 min
May 10, 9:43 PM CDT	Severe Thunderstorm Warning	OHX	Robertson, Sumner	32 min
May 10, 9:51 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Montgomery, Robertson	24 min
May 10, 10:05 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Robertson	25 min
May 10, 10:12 PM CDT	Severe Thunderstorm Warning	OHX	Sumner	33 min
May 10, 10:14 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner	46 min
May 10, 10:40 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	40 min
May 10, 10:51 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner	39 min
May 10, 11:11 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Sumner, Wilson	34 min
May 10, 11:45 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Sumner, Wilson	30 min
May 10, 11:53 PM CDT	Flash Flood Warning	OHX	Davidson, Rutherford, Sumner, Wilson	112 min
May 10, 11:58 PM CDT	Flash Flood Warning	OHX	Cheatham, Davidson, Robertson, Sumner	3 hr
May 11, 12:18 AM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Wilson	27 min
May 11, 12:44 AM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Wilson	31 min
May 11, 1:10 AM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Rutherford, Wilson	35 min
May 11, 1:33 AM CDT	Special Weather Statement	OHX	Sumner	27 min
May 11, 1:39 AM CDT	Special Weather Statement	OHX	DeKalb	51 min
May 11, 1:43 AM CDT	Areal Flood Warning	OHX	Cheatham, Davidson, Robertson, Sumner, Wilson	2 hr
May 11, 2:02 AM CDT	Special Weather Statement	OHX	Trousdale	28 min
May 11, 2:20 AM CDT	Areal Flood Advisory	OHX	Robertson, Sumner	115 min
May 11, 2:57 AM CDT	Special Weather Statement	OHX	Macon, Smith, Sumner, Trousdale	63 min
May 11, 3:45 AM CDT	Special Weather Statement	OHX	Jackson, Smith, Trousdale	45 min
May 11, 4:03 AM CDT	Flash Flood Warning	OHX	Smith, Trousdale	117 min
May 11, 4:14 AM CDT	Flash Flood Warning	OHX	Sumner	2 hr
May 11, 4:35 AM CDT	Special Weather Statement	OHX	Jackson, Smith	40 min
May 11, 4:39 AM CDT	Special Weather Statement	OHX	Davidson	36 min
May 11, 5:55 AM CDT	Flash Flood Warning	OHX	Macon, Smith, Sumner, Trousdale	2 hr
May 11, 7:07 AM CDT	Special Weather Statement	OHX	Sumner	23 min
May 11, 7:21 AM CDT	Special Weather Statement	OHX	Jackson	24 min
May 11, 7:47 AM CDT	Special Weather Statement	OHX	Jackson, Putnam	58 min
May 11, 7:54 AM CDT	Flash Flood Warning	OHX	Jackson, Macon, Robertson, Smith, Sumner, Trousdale	4 hr
May 11, 8:32 AM CDT	Special Weather Statement	OHX	Sumner, Trousdale	43 min
May 11, 8:41 AM CDT	Flash Flood Warning Emergency	OHX	Macon, Sumner, Trousdale	4 hr
May 11, 8:43 AM CDT	Special Weather Statement	OHX	Cumberland	32 min
May 11, 9:24 AM CDT	Flash Flood Warning	OHX	Cumberland, Fentress, Overton, Putnam	3 hr
May 11, 9:41 AM CDT	Special Weather Statement	OHX	Putnam	34 min

Nearby

Areal Flood Warnings in Tennessee, 2016 Every areal flood warning in 2016

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.