Alert archive / Tennessee / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 47, NWS Nashville, TN

March 31, 2006Bedford County, Coffee County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 31, 2006, 8:55 PM CST for Bedford County, Coffee County, Tennessee. It was in force for 35 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: Mar 31, 2006, 8:55 PM CST (02:55 UTC)
Expired: Mar 31, 2006, 9:30 PM CST
In force: 35 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Bedford County, TN, Coffee County, TN

The radar

The Northeast Alabama radar (KHTX), 66 km from the middle of the area, began a volume at 02:57 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
Mar 31, 4:53 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.9 hours before the alert went out and 76 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: 419 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 589 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 235 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.7

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 Mar 31, 3:17 PM CST, 5 hours 38 minutes earlier.

Area forecast discussion, Mar 31, 3:17 PM CST, 5 hours 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
317 PM CST FRI MAR 31 2006

.DISCUSSION...
THIS AFTERNOON...A COLD FRONT STRETCHES FROM IN SOUTHWEST ACROSS
NORTHWESTERN AR AND INTO OK. THE WIDESPREAD PREFRONTAL MOISTURE IS
PUSHING EAST AND IS LOCATED PRIMARILY TO THE EAST OF I-65.
HOWEVER...AN INCREASE IN INSTABILITY EXISTS WESTWARD FROM MIDDLE TN
TO THE COLD FRONT. SCATTERED TO BROKEN CONVECTION IS FIRING ACROSS
MS...WESTERN TN AND INTO THE MO BOOTHEAL. THIS ACTIVITY IS MOVING
EASTWARD SO RAIN CHANCES WILL CONTINUE FOR THE ENTIRE MID STATE INTO
THIS EVENING. SOME GUSTY WINDS COULD ACCOMPANY THE STORMS ACROSS
WESTERN PORTIONS OF THE MID STATE LATE THIS AFTERNOON AND INTO
EARLY THIS EVENING.

BEST THETA-E RIDGING WILL SHIFT EASTWARD BUT SFC INSTABILITIES WILL
STILL BE SUFFICIENT FOR THUNDERSTORMS INTO THIS EVENING. 850 MB
WINDS WILL BE AROUND 35-40 KTS WITH SFC CAPES BELOW 1,000 J/KG SO
SVR STORMS ARE NOT EXPECTED. THE FORCING AXIS WILL BE POSITIONED
FROM THE PLATEAU THROUGH SOUTHERN MIDDLE TN AROUND 00Z. BY
06Z...THE PRECIPITATION WILL BE COMING TO AN END AND PULLING SOUTH
AND EAST OF MIDDLE TN. WILL INCLUDE LIKELY POPS THIS EVENING
ACROSS THE PLATEAU...50 POPS ELSEWHERE.

DRIER AIR TO MOVE IN ON SATURDAY WITH A RETURN OF PARTLY CLOUDY
CONDITIONS. TEMPERATURES WILL REMAIN ABOVE NORMAL AS THE MERCURY
REACHES INTO THE 70S.

ANOTHER STORM SYSTEM AND ASSOCIATED COLD FRONT WILL AGAIN BRING A
CHANCE OF SHOWERS AND STORMS TO THE AREA ON SUNDAY AND SUNDAY NIGHT.
COOLER AIR WILL FOLLOW WITH TEMPERATURES RETURNING TO NEAR OR
SLIGHTLY BELOW NORMAL FOR TUESDAY AND WEDNESDAY. MILDER TEMPERATURES
AND A RETURN OF SHOWERS AND THUNDERSTORMS WILL ROUND OUT THE
REMAINDER OF THE WORK WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
NASHVILLE    54  76  51  77 /  50  10  10  40
CLARKSVILLE  51  73  51  74 /  50  10  10  40
CROSSVILLE   51  70  48  72 /  70  10  10  40

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

21

Hazardous weather outlook, Mar 31, 4:44 AM CST, 16 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
444 AM CST FRI MAR 31 2006

TNZ005>011-022>034-056>066-075-077>080-093>095-011030-
BEDFORD-BENTON-CANNON-CHEATHAM-CLAY-COFFEE-CUMBERLAND-DAVIDSON-
DEKALB-DICKSON-FENTRESS-GILES-GRUNDY-HICKMAN-HOUSTON-HUMPHREYS-
JACKSON-LAWRENCE-LEWIS-MACON-MARSHALL-MAURY-MONTGOMERY-OVERTON-PERRY-
PICKETT-PUTNAM-ROBERTSON-RUTHERFORD-SMITH-STEWART-SUMNER-TROUSDALE-
VAN BUREN-WARREN-WAYNE-WHITE-WILLIAMSON-WILSON-
444 AM CST FRI MAR 31 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL APPROACH MIDDLE TENNESSEE THIS MORNING...THEN
SWING ACROSS THE AREA THIS AFTERNOON AND TONIGHT. THERE WILL
BE A SLIGHT RISK FOR SEVERE THUNDERSTORMS OUT AHEAD OF THE
FRONT...ACROSS ALL OF THE MID STATE...TODAY AND TONIGHT. THE MAIN
HAZARD FROM THESE STORMS WILL BE DAMAGING STRAIGHT LINE WINDS
AND LARGE HAILSTONES.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ANOTHER COLD FRONT IS EXPECTED LATE SUNDAY THROUGH
EARLY MONDAY AND WILL BRING ALONG ANOTHER SLIGHT RISK FOR
SEVERE THUNDERSTORMS TO MIDDLE TENNESSEE

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT
PERSONNEL IS POSSIBLE LATER TODAY AND TONIGHT.

19

In the hours before

Special weather statement, Mar 31, 6:08 PM CST, 2 hours 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
608 PM CST FRI MAR 31 2006

TNZ093>095-010030-
GILES-LAWRENCE-WAYNE-
608 PM CST FRI MAR 31 2006

...TORNADO WATCH FOR THE WESTERN HALF OF MIDDLE TENNESSEE UNTIL
10 PM CST...

OUR NEIGHBORING OFFICE TO OUR SOUTH...IN HUNTSVILLE ALABAMA...HAS
CONTINUED THE TORNADO WARNING FOR LAUDERDALE COUNTY IN NORTHWEST
ALABAMA UNTIL 630 PM CST. THE TORNADO WARNING NOW INCLUDES LIMESTONE
COUNTY.

THE TORNADIC STORM AT 6 PM CST...IS MOVING EASTWARD AT 30 MPH...ALONG
THE LAUDERDALE...AND LIMESTONE COUNTY LINE...10 MILES SOUTH OF MINOR
HILL TENNESSEE.

WE WILL CONTINUE TO MONITOR THIS STORM CLOSELY. RESIDENTS IN
SOUTHERN MIDDLE TENNESSEE...SHOULD STAY ALERT...BY LISTENING
TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION.

BOYD

Local storm report, Mar 31, 7:09 PM CST, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
709 PM CST FRI MAR 31 2006

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

0705 PM     HAIL             1 N SPRING HILL         35.76N 86.92W
03/31/2006  M1.00 INCH       MAURY              TN   AMATEUR RADIO

&&

JCOHEN

Local storm report, Mar 31, 7:11 PM CST, 1 hour 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
711 PM CST FRI MAR 31 2006

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

0705 PM     TSTM WND GST     1 N SPRING HILL         35.76N 86.92W
03/31/2006  E70 MPH          MAURY              TN   AMATEUR RADIO

&&

JCOHEN

Local storm report, Mar 31, 7:13 PM CST, 1 hour 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
713 PM CST FRI MAR 31 2006

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

0705 PM     HAIL             4 E SPRING HILL         35.74N 86.85W
03/31/2006  M1.75 INCH       WILLIAMSON         TN   AMATEUR RADIO

&&

JCOHEN

Local storm report, Mar 31, 8:08 PM CST, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
808 PM CST FRI MAR 31 2006

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

0654 PM     HAIL             7 S DICKSON             35.98N 87.38W
03/31/2006  M1.00 INCH       HICKMAN            TN   LAW ENFORCEMENT

&&

JCOHEN

Local storm report, Mar 31, 8:54 PM CST, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
854 PM CST FRI MAR 31 2006

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

0825 PM     HAIL             5 N SHELBYVILLE         35.56N 86.45W
03/31/2006  E1.75 INCH       BEDFORD            TN   PUBLIC

&&

JCOHEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 6:32 PM CST	Tornado Warning	OHX	Dickson, Hickman, Humphreys	43 min
Mar 31, 6:39 PM CST	Tornado Warning	OHX	Maury, Williamson	36 min
Mar 31, 6:56 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson	34 min
Mar 31, 7:13 PM CST	Tornado Warning	OHX	Marshall, Maury, Williamson	32 min
Mar 31, 7:20 PM CST	Tornado Warning	OHX	Bedford, Rutherford	40 min
Mar 31, 7:44 PM CST	Severe Thunderstorm Warning	OHX	Marshall, Maury	46 min
Mar 31, 7:54 PM CST	Tornado Warning	OHX	Bedford, Marshall, Rutherford	36 min
Mar 31, 8:28 PM CST	Tornado Warning	OHX	Bedford	32 min
Mar 31, 8:58 PM CST	Flash Flood Warning	OHX	Maury	2 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2006 Every severe thunderstorm warning in 2006

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.