Alert archive / Tennessee / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 84, NWS Nashville, TN

May 2, 2010Davidson County, Sumner County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 2, 2010, 1:00 PM CDT for Davidson County, Sumner County, Tennessee. It was in force for 20 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: May 2, 2010, 1:00 PM CDT (18:00 UTC)
Expired: May 2, 2010, 1:20 PM CDT
In force: 20 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Davidson County, TN, Sumner County, TN

The radar

The Nashville radar (KOHX), 10 km from the middle of the area, began a volume at 18:03 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 2, 11:57 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.0 hours before the alert went out and 21 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: 1271 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 546 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 387 m²/s²
0-3 km storm-relative helicity: 551 m²/s²
Significant tornado parameter: 4.6
Supercell composite: 20.1

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 Nashville, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at May 2, 12:31 PM CDT, 29 minutes earlier.

Area forecast discussion, May 2, 12:31 PM CDT, 29 minutes before

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Hazardous weather outlook, May 2, 5:43 AM CDT, 7 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
543 AM CDT SUN MAY 2 2010

TNZ005>011-022>034-056>066-075-077>080-093>095-031030-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-BENTON-
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-
543 AM CDT SUN MAY 2 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THE THREAT OF MORE FLOODING AS WELL AS SEVERE THUNDERSTORMS
PRODUCING ISOLATED TORNADOES WILL CONTINUE AGAIN TODAY. THIS
THREAT WILL CARRY INTO TONIGHT BUT LESSEN GREATLY AFTER MIDNIGHT.
MODERATE TO MAJOR FLOODING WILL CONTINUE ALONG RIVERS AND STREAMS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

MODERATE TO MAJOR FLOODING WILL CONTINUE ALONG AREA RIVERS.

.SPOTTER INFORMATION STATEMENT...

A SIGNIFICANT SEVERE WEATHER EVENT IS EXPECTED. SPOTTER REPORTS
WILL BE NEEDED.

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

07

In the hours before

Local storm report, May 2, 9:21 AM CDT, 3 hours 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
921 AM CDT SUN MAY 02 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0919 AM     FLOOD            1 W MOUNT JULIET        36.21N 86.54W
05/02/2010                   WILSON             TN   PUBLIC

            FLOODING OF DIVISION STREET AND SOUTH GREEN HILL ROAD
            JUST WEST OF MOUNT JULIET ROAD WAS REPORTED.

&&

JLAROSA

Local storm report, May 2, 9:29 AM CDT, 3 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
929 AM CDT SUN MAY 02 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0627 AM     TSTM WND DMG     HENDERSONVILLE          36.29N 86.60W
05/02/2010                   SUMNER             TN   LAW ENFORCEMENT

            TREES DOWN AND A FEW HOMES DAMAGED

&&

21

Local storm report, May 2, 11:11 AM CDT, 1 hour 49 minutes before

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Local storm report, May 2, 12:46 PM CDT, 14 minutes before

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Local storm report, May 2, 12:50 PM CDT, 10 minutes before

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Local storm report, May 2, 12:58 PM CDT, 2 minutes 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 1, 7:44 PM CDT	River Flood Warning	OHX	Hickman	5 days
May 1, 8:47 PM CDT	River Flood Warning	OHX	Bedford, Marshall	43 hr
May 1, 8:47 PM CDT	River Flood Warning	OHX	Maury	4 days
May 1, 8:47 PM CDT	River Flood Warning	OHX	Lawrence	43 hr
May 1, 8:47 PM CDT	River Flood Warning	OHX	Giles	43 hr
May 1, 8:47 PM CDT	River Flood Warning	OHX	Giles	43 hr
May 1, 9:31 PM CDT	River Flood Warning	OHX	Montgomery	7 days
May 1, 9:37 PM CDT	Tornado Warning	OHX	Hickman, Lawrence, Lewis, Maury	23 min
May 1, 9:48 PM CDT	Tornado Warning	OHX	Hickman, Lewis, Perry, Wayne	27 min
May 1, 9:59 PM CDT	Tornado Warning	OHX	Lawrence, Lewis, Maury	31 min
May 1, 10:01 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Houston, Humphreys, Stewart	29 min
May 1, 10:17 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Robertson	13 min
May 1, 10:23 PM CDT	Tornado Warning	OHX	Hickman, Lewis, Maury, Williamson	37 min
May 1, 10:24 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery	6 min
May 1, 10:27 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	18 min
May 2, 1:40 AM CDT	River Flood Warning	OHX	Bedford	5 hr
May 2, 3:05 AM CDT	Tornado Warning	OHX	Benton, Houston, Humphreys, Stewart	55 min
May 2, 4:28 AM CDT	Tornado Warning	OHX	Benton, Humphreys, Perry	32 min
May 2, 4:46 AM CDT	Tornado Warning	OHX	Hickman, Humphreys, Perry	29 min
May 2, 5:06 AM CDT	Tornado Warning	OHX	Dickson, Hickman	24 min
May 2, 5:31 AM CDT	Tornado Warning	OHX	Cheatham, Davidson, Dickson, Williamson	29 min
May 2, 5:53 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Williamson	37 min
May 2, 5:57 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Montgomery, Robertson, Sumner	42 min
May 2, 6:12 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Sumner, Wilson	48 min
May 2, 6:31 AM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Maury, Williamson	29 min
May 2, 6:36 AM CDT	River Flood Advisory	OHX	Clay, Jackson	12 hr
May 2, 6:36 AM CDT	River Flood Advisory	OHX	Davidson	3 hr
May 2, 6:36 AM CDT	River Flood Advisory	OHX	Smith	3 hr
May 2, 6:59 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Williamson	31 min
May 2, 7:36 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner, Trousdale, Wilson	24 min
May 2, 7:49 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Williamson	26 min
May 2, 8:13 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Smith, Sumner, Trousdale and 1 more	32 min
May 2, 8:49 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Smith, Trousdale	41 min
May 2, 8:58 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Smith, Sumner, Trousdale, Williamson and 1 more	47 min
May 2, 9:21 AM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Lewis, Perry, Wayne, Williamson	24 min
May 2, 9:35 AM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Lewis, Perry, Wayne, Williamson	10 min
May 2, 9:50 AM CDT	River Flood Warning	OHX	Davidson	4 days
May 2, 9:50 AM CDT	River Flood Warning	OHX	Smith	6 hr
May 2, 9:54 AM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury, Williamson	21 min
May 2, 11:04 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Maury, Rutherford, Williamson	26 min
May 2, 11:25 AM CDT	River Flood Warning	OHX	Davidson	20 hr
May 2, 11:25 AM CDT	River Flood Warning	OHX	Davidson	7 hr
May 2, 11:25 AM CDT	River Flood Warning	OHX	Davidson	7 hr
May 2, 11:25 AM CDT	River Flood Warning	OHX	Davidson	7 hr
May 2, 11:34 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Williamson, Wilson	26 min
May 2, 12:35 PM CDT	Severe Thunderstorm Warning	OHX	Williamson	25 min
May 2, 2:09 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Overton, Putnam, Smith	21 min
May 2, 4:59 PM CDT	Severe Thunderstorm Warning	OHX	Jackson, Overton, Putnam	31 min
May 2, 5:27 PM CDT	Areal Flood Warning	OHX	Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 33 more	24 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2010 Every severe thunderstorm 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.