Alert archive / Tennessee / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 128, NWS Nashville, TN
NWS Nashville, TN issued this severe thunderstorm warning at May 15, 2009, 5:08 PM CDT for Davidson County, Sumner County, Wilson County, Tennessee. It was in force for 37 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 15, 2009, 5:08 PM CDT (22:08 UTC)
- Expired
- May 15, 2009, 5:45 PM CDT
- In force
- 37 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
Counties Davidson County, TN, Sumner County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 5 km from the middle of the area, began a volume at 22:11 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, 10.1 hours before the alert went out and 17 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.
- Mixed-layer CAPE
- 1735 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 673 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 15, 3:59 PM CDT, 1 hour 9 minutes earlier.
Area forecast discussion, May 15, 3:59 PM CDT, 1 hour 9 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 359 PM CDT FRI MAY 15 2009 .SHORT TERM (THROUGH SUN NIGHT)... UNSTAB AIR/WEAK CIRCULATION ALOFT TOUCHED OFF SCATTERED SHOWERS AND THUNDERSTORMS ACROSS MID TN...MAINLY EAST OF INTERSTATE 65. A FEW STRONG CELLS IN LAWRENCE/GILES COUNTIES ATTM WITH 3000+ CAPES NEARBY. KEY WAS THE VERY UNSTAB AIR IN THE 12Z RAOB THIS MORNING THAT CONTAINED DESTAB WITH UPR WAVE ALOFT. WEAK UPR DISTURBANCE IS STATIONARY AS PER SUBSISTENCE OVR WEST TN IN VIS IMAGERY...WITH CELL MERGERS ON ACTIVE SIDE IN THE CNTL PLATEAU. SOME HYDRO CONCERNS IN THE CNTRL PLATEAU WITH FLOOD ADVISORY IN EFFECT UNTIL 23Z. EVENING STORMS SHOULD DIE DOWN OR DIE OUT WITH NOCTURNAL COOLING. NOT EXPECTED STORMS TO REFIRE AFT MIDNIGHT ACR MID TN. INSTEAD...MCS ACTIVITY IN MO WL SINK SOUTH AND EXPAND TO A SQUALL LINE. THIS FEATURE IS EXPECTED TO MOVE INTO MID TN SAT SUSTAINED BY A COLD FRONT. SHOWERS AND THUNDERSTORMS WL INC DURING THE DAY WITH FROPA EXPECTED EARLY TO MID AFTERNOON. MODELS CONSISTENT WITH LOW SHEAR EVENT...SO PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER REMAINS LOW. ISOLATED STRONG TO SEVERE STORMS POSSIBLE. PCPN SHOULD SCATTER SAT NITE WITH A FEW LINGERING SHOWERS SUN MORNING. .LONG TERM (MON-FRI)... DRY PERIOD WITH SFC HIGH PRES IN CONTROL. COOL MORNING LOWS MON- TUE...WITH UPR RIDGE/WARM AFTERNOON HIGHS WED-FRI. && .PRELIMINARY POINT TEMPS/POPS... NASHVILLE 66 80 53 67 / 20 80 60 20 CLARKSVILLE 65 78 51 67 / 20 80 50 10 CROSSVILLE 61 76 52 61 / 30 80 80 30 COLUMBIA 65 81 55 66 / 20 80 70 20 LAWRENCEBURG 65 81 56 66 / 20 80 80 20 WAVERLY 65 79 53 67 / 20 80 50 10 && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && 04
Hazardous weather outlook, May 15, 9:50 AM CDT, 7 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE NASHVILLE TN 950 AM CDT FRI MAY 15 2009 ADDED SPOTTER INFORMATION STATEMENT TNZ005>011-022>034-056>066-075-077>080-093>095-161500- 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-DEKALB-WHITE- CUMBERLAND-BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE- GILES- 950 AM CDT FRI MAY 15 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP TODAY. STRONGER STORMS COULD PRODUCE SMALL HAIL AND WINDS GUSTS TO 50 MPH. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SHOWERS AND THUNDERSTORMS WILL DEVELOP SATURDAY AHEAD OF A COLD FRONT. ISOLATED STRONG TO SEVERE THUNDESTORMS ARE POSSIBLE. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... DUE TO THE BRIEF AND ISOLATED NATURE OF POSSIBLE SEVERE WEATHER SATURDAY...SPOTTER ACTIVATION IS NOT ANTICIPATED. 04
In the hours before
Special weather statement, May 15, 1:29 PM CDT, 3 hours 39 minutes before
SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE NASHVILLE TN 129 PM CDT FRI MAY 15 2009 TNZ007>011-027>034-059>066-075-077>080-152115- ROBERTSON-SUMNER-MACON-CLAY-PICKETT-DAVIDSON-WILSON-TROUSDALE- SMITH-JACKSON-PUTNAM-OVERTON-FENTRESS-WILLIAMSON-MAURY-MARSHALL- RUTHERFORD-CANNON-DEKALB-WHITE-CUMBERLAND-BEDFORD-COFFEE-WARREN- GRUNDY-VAN BUREN- INCLUDING THE CITIES OF...SPRINGFIELD...GALLATIN...LAFAYETTE... CELINA...BYRDSTOWN...NASHVILLE...LEBANON...MOUNT JULIET... HARTSVILLE...CARTHAGE...GAINESBORO...COOKEVILLE...LIVINGSTON... JAMESTOWN...ALLARDT...FRANKLIN...BRENTWOOD...COLUMBIA... LEWISBURG...MURFREESBORO...WOODBURY...SMITHVILLE...SPARTA... CROSSVILLE...FAIRFIELD GLADE...SHELBYVILLE...TULLAHOMA... MANCHESTER...MCMINNVILLE...TRACY CITY...ALTAMONT...COALMONT... SPENCER 129 PM CDT FRI MAY 15 2009 ...SCATTERED STRONG THUNDERSTORMS WILL CONTINUE ACROSS MIDDLE TENNESSEE EAST OF THE INTERSTATE 65 CORRIDOR THIS AFTERNOON... UNSTABLE AIR AND A MID LEVEL CIRCULATION WILL CONTINUE TO DEVELOP SCATTERED SHOWERS AND THUNDERSTORMS ACROSS EAST MIDDLE TENNESSEE THIS AFTERNOON. ISOLATED CELLS COULD PRODUCE HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 50 MPH. BECAUSE OF THE BRIEF AND ISOLATED NATURE OF THE STORMS...NO SEVERE THUNDERSTORM WATCH IS ANTICIPATED. 04
Local storm report, May 15, 2:21 PM CDT, 2 hours 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
221 PM CDT FRI MAY 15 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0217 PM HAIL 5 S LAWRENCEBURG 35.17N 87.34W
05/15/2009 E0.50 INCH LAWRENCE TN TRAINED SPOTTER
DIME SIZE HAIL REPORTED BY SPOTTER NEAR LEOME
&&
RTROUTMNLocal storm report, May 15, 2:22 PM CDT, 2 hours 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
222 PM CDT FRI MAY 15 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0217 PM HAIL 2 S MURFREESBORO 35.82N 86.39W
05/15/2009 E0.88 INCH RUTHERFORD TN TRAINED SPOTTER
NICKEL SIZE HAIL ALONG HWY 231 SOUTH
&&
RTROUTMNLocal storm report, May 15, 2:28 PM CDT, 2 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
228 PM CDT FRI MAY 15 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0227 PM HAIL MURFREESBORO 35.85N 86.39W
05/15/2009 E1.00 INCH RUTHERFORD TN TRAINED SPOTTER
NEAR I-24 AND CHURCH STREET
&&
RTROUTMNLocal storm report, May 15, 2:45 PM CDT, 2 hours 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
245 PM CDT FRI MAY 15 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0240 PM HAIL SPARTA 35.93N 85.47W
05/15/2009 E1.00 INCH WHITE TN EMERGENCY MNGR
IN SPARTA
&&
RTROUTMNLocal storm report, May 15, 3:09 PM CDT, 1 hour 59 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE TN
309 PM CDT FRI MAY 15 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1123 AM HAIL 8 S JAMESTOWN 36.32N 84.94W
05/15/2009 M1.00 INCH FENTRESS TN LAW ENFORCEMENT
ONE INCH HAIL WAS REPORTED.
0217 PM HAIL 5 S LAWRENCEBURG 35.17N 87.34W
05/15/2009 E0.50 INCH LAWRENCE TN TRAINED SPOTTER
DIME SIZE HAIL REPORTED BY SPOTTER NEAR LEOME
0217 PM HAIL 2 S MURFREESBORO 35.82N 86.39W
05/15/2009 E0.88 INCH RUTHERFORD TN TRAINED SPOTTER
NICKEL SIZE HAIL ALONG HWY 231 SOUTH
0227 PM HAIL MURFREESBORO 35.85N 86.39W
05/15/2009 E1.00 INCH RUTHERFORD TN TRAINED SPOTTER
NEAR I-24 AND CHURCH STREET
0240 PM HAIL SPARTA 35.93N 85.47W
05/15/2009 E1.00 INCH WHITE TN EMERGENCY MNGR
IN SPARTA
&&
JBWThe office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 11:24 AM CDT | Severe Thunderstorm Warning | OHX | Fentress | 36 min |
| May 15, 12:04 PM CDT | Severe Thunderstorm Warning | OHX | Rutherford, Williamson | 26 min |
| May 15, 12:37 PM CDT | Severe Thunderstorm Warning | OHX | Jackson, Macon, Smith, Trousdale | 23 min |
| May 15, 12:54 PM CDT | Severe Thunderstorm Warning | OHX | Clay, Macon | 21 min |
| May 15, 1:05 PM CDT | Severe Thunderstorm Warning | OHX | Jackson | 55 min |
| May 15, 1:08 PM CDT | Severe Thunderstorm Warning | OHX | Williamson | 37 min |
| May 15, 1:11 PM CDT | Severe Thunderstorm Warning | OHX | Jackson | 49 min |
| May 15, 1:15 PM CDT | Severe Thunderstorm Warning | OHX | Coffee, Grundy | 30 min |
| May 15, 1:43 PM CDT | Severe Thunderstorm Warning | OHX | Overton | 32 min |
| May 15, 1:49 PM CDT | Severe Thunderstorm Warning | OHX | Jackson | 11 min |
| May 15, 1:53 PM CDT | Severe Thunderstorm Warning | OHX | Smith | 18 min |
| May 15, 1:56 PM CDT | Severe Thunderstorm Warning | OHX | Pickett | 34 min |
| May 15, 2:06 PM CDT | Severe Thunderstorm Warning | OHX | Lawrence | 54 min |
| May 15, 2:14 PM CDT | Severe Thunderstorm Warning | OHX | Cannon, DeKalb, Warren | 31 min |
| May 15, 2:17 PM CDT | Severe Thunderstorm Warning | OHX | Van Buren, White | 28 min |
| May 15, 2:19 PM CDT | Severe Thunderstorm Warning | OHX | Rutherford | 26 min |
| May 15, 2:22 PM CDT | Severe Thunderstorm Warning | OHX | Fentress, Overton, Pickett | 28 min |
| May 15, 2:42 PM CDT | Severe Thunderstorm Warning | OHX | Cumberland, Putnam, White | 48 min |
| May 15, 2:47 PM CDT | Severe Thunderstorm Warning | OHX | Cannon, Rutherford | 28 min |
| May 15, 2:50 PM CDT | Areal Flood Advisory | OHX | Pickett | 3 hr |
| May 15, 2:56 PM CDT | Areal Flood Advisory | OHX | White | 3 hr |
| May 15, 2:59 PM CDT | Severe Thunderstorm Warning | OHX | Overton, Putnam | 34 min |
| May 15, 3:27 PM CDT | Areal Flood Advisory | OHX | Van Buren | 3 hr |
| May 15, 5:13 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Robertson, Sumner | 32 min |
| May 15, 5:40 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Robertson, Sumner, Wilson | 35 min |
| May 15, 6:15 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Robertson, Sumner | 30 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2009Every severe thunderstorm warning in 2009
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.