Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 101, NWS Nashville, TN

April 8, 1998White County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Apr 8, 1998, 9:54 PM CDT for White County, Tennessee. It was in force for 36 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: Apr 8, 1998, 9:54 PM CDT (02:54 UTC)
Expired: Apr 8, 1998, 10:30 PM CDT
In force: 36 min
Issued by: NWS Nashville, TN
Area: Whole counties

County White County, TN

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 8, 6:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.9 hours before the alert went out and 105 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: 1032 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 1081 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 297 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 8.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KBNA 090254 RRA
SVRBNA
TNC185-090330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
954 PM CDT WED APR 8 1998

THE NATIONAL WEATHER SERVICE IN NASHVILLE TN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN MIDDLE TENNESSEE

   ...WHITE
 
AT 955 PM CDT A SEVERE THUNDERSTORM WAS INDICATED IN WHITE COUNTY
NEAR SPARTA.  THE SEVERE THUNDERSTORM WILL MOVE EAST ALONG HIGHWAY
70 FOR THE NEXT HALF HOUR.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE
ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.

BOYD

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 Apr 8, 4:50 PM CDT, 5 hours 4 minutes earlier.

Area forecast discussion, Apr 8, 4:50 PM CDT, 5 hours 4 minutes before

AREA FORECAST DISCUSSION              ...INTERMEDIATE...
NATIONAL WEATHER SERVICE NASHVILLE TN
450 PM CDT WED APR 8 1998

DEWPOINT AXIS RUNNING UP INTO MIDDLE TENNESSEE THIS EVENING
WITH HUB-CAPS STILL SHOWING CAPES AROUND 1000 J/KG WITH > 3000 J/KG
ACROSS THE SOUTH HALF OF MISSISSIPPI INTO CENTRAL ALABAMA.
IMPRESSIVE THERMAL AXIS RUNNING OUT OF SOUTHEAST TEXAS AND
INTERSECTING DEWPOINT ACROSS SOUTH MISSISSIPPI INTO ALABAMA.

EXPECT IMPRESSIVE VORTICITY CENTER TO TAKE AIM ON TENNESSEE TONIGHT
AND WITH THE PARAMETERS IN PLACE EXPECT YET ANOTHER ROUND OF
SEVERE WEATHER IN MID STATE.

WOW 80 KT SPEED MAX PUNCHING INTO SOUTHWEST ARKANSAS AT 21Z.

WILL ISSUE SPS AND MENTION THREAT OF SEVERE WEATHER IN MID STATE
TONIGHT.

BOYD
01

In the hours before

Special weather statement, Apr 8, 5:03 PM CDT, 4 hours 51 minutes before

TNZ005>011-022>033-055>065-075>082-093>098-090955-

MIDDLE TENNESSEE SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
503 PM CDT WED APR 8 1998

...SEVERE WEATHER IS AGAIN POSSIBLE IN MIDDLE TENNESSEE TONIGHT...

A VIGOROUS UPPER LEVEL DISTURBANCE IS HEADING TOWARD MIDDLE
TENNESSEE ALONG WITH A STRONG MID AND UPPER LEVEL JET. THIS
SITUATION IS IMPRESSIVE AND IS BEING WATCHED CLOSELY HERE AT THE
NATIONAL WEATHER SERVICE OFFICE IN NASHVILLE.

THE PRIMARY THREAT WILL BE DAMAGING WINDS AND LARGE HAIL BUT
ISOLATED TORNADOES MAY ALSO OCCUR.

RESIDENTS ACROSS MIDDLE TENNESSEE SHOULD STAY TUNED TO NOAA WEATHER
RADIO OR ANOTHER RELIABLE SOURCE OF WEATHER INFORMATION FOR THE
LATEST ON THIS DEVELOPING WEATHER SITUATION.  YOU SHOULD ALSO
REVIEW SEVERE WEATHER SAFETY RULES BEFORE SEVERE WEATHER THREATENS
YOUR AREA.

BOYD

Special weather statement, Apr 8, 5:03 PM CDT, 4 hours 51 minutes before

TNZ005>011-022>033-055>065-075>082-093>098-090955-

MIDDLE TENNESSEE SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
503 PM CDT WED APR 8 1998

...SEVERE WEATHER IS AGAIN POSSIBLE IN MIDDLE TENNESSEE TONIGHT...

A VIGOROUS UPPER LEVEL DISTURBANCE IS HEADING TOWARD MIDDLE
TENNESSEE ALONG WITH A STRONG MID AND UPPER LEVEL JET. THIS
SITUATION IS IMPRESSIVE AND IS BEING WATCHED CLOSELY HERE AT THE
NATIONAL WEATHER SERVICE OFFICE IN NASHVILLE.

THE PRIMARY THREAT WILL BE DAMAGING WINDS AND LARGE HAIL BUT
ISOLATED TORNADOES MAY ALSO OCCUR.

RESIDENTS ACROSS MIDDLE TENNESSEE SHOULD STAY TUNED TO NOAA WEATHER
RADIO OR ANOTHER RELIABLE SOURCE OF WEATHER INFORMATION FOR THE
LATEST ON THIS DEVELOPING WEATHER SITUATION.  YOU SHOULD ALSO
REVIEW SEVERE WEATHER SAFETY RULES BEFORE SEVERE WEATHER THREATENS
YOUR AREA.

BOYD

Local storm report, Apr 8, 6:23 PM CDT, 3 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TENNESSEE
623 PM CDT WED APR 08 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 PM    WAYNESBORO                TN   1.5 INCH HAIL
04/08/98   WAYNE                          SILVER DOLLAR SIZED HAIL
                                          REPORTED BY STORM SPOTTER
                                          JUST NORTH OF WAYNESBORO

BOYD

Local storm report, Apr 8, 6:23 PM CDT, 3 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TENNESSEE
623 PM CDT WED APR 08 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 PM    WAYNESBORO                TN   1.5 INCH HAIL
04/08/98   WAYNE                          SILVER DOLLAR SIZED HAIL
                                          REPORTED BY STORM SPOTTER
                                          JUST NORTH OF WAYNESBORO

BOYD

Local storm report, Apr 8, 6:47 PM CDT, 3 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TENNESSEE
647 PM CDT WED APR 08 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0640 PM    WESTPOINT                 TN   60 MPH TSTM GUST
04/08/98   LAWRENCE                       LAWRENCE COUNTY EMA
                                          REPORTED WIND GUSTS TO 60
                                          MPH AND GOLF BALL SIZE
                                          HAIL AT WESTPOINT IN
                                          SOUTHWEST LAWRENCE COUNTY.

BOYD

Local storm report, Apr 8, 6:47 PM CDT, 3 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TENNESSEE
647 PM CDT WED APR 08 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0640 PM    WESTPOINT                 TN   60 MPH TSTM GUST
04/08/98   LAWRENCE                       LAWRENCE COUNTY EMA
                                          REPORTED WIND GUSTS TO 60
                                          MPH AND GOLF BALL SIZE
                                          HAIL AT WESTPOINT IN
                                          SOUTHWEST LAWRENCE COUNTY.

BOYD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 7:00 PM CDT	Tornado Warning	OHX	Giles	35 min
Apr 8, 7:08 PM CDT	Severe Thunderstorm Warning	OHX	Wilson	62 min
Apr 8, 7:16 PM CDT	Severe Thunderstorm Warning	OHX	Bedford	59 min
Apr 8, 7:20 PM CDT	Tornado Warning	OHX	Giles, Lincoln	60 min
Apr 8, 7:24 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Williamson	46 min
Apr 8, 7:26 PM CDT	Tornado Warning	OHX	Bedford	49 min
Apr 8, 7:37 PM CDT	Severe Thunderstorm Warning	OHX	Coffee	68 min
Apr 8, 7:42 PM CDT	Tornado Warning	OHX	Moore	33 min
Apr 8, 7:43 PM CDT	Tornado Warning	OHX	Coffee	47 min
Apr 8, 7:46 PM CDT	Severe Thunderstorm Warning	OHX	Putnam	44 min
Apr 8, 7:50 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence	40 min
Apr 8, 7:55 PM CDT	Tornado Warning	OHX	Franklin	50 min
Apr 8, 8:04 PM CDT	Severe Thunderstorm Warning	OHX	Maury	56 min
Apr 8, 8:08 PM CDT	Tornado Warning	OHX	Grundy, Warren	47 min
Apr 8, 8:13 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Overton	62 min
Apr 8, 8:32 PM CDT	Severe Thunderstorm Warning	OHX	Marshall	43 min
Apr 8, 8:36 PM CDT	Tornado Warning	OHX	Sequatchie, Van Buren	39 min
Apr 8, 8:42 PM CDT	Severe Thunderstorm Warning	OHX	White	48 min
Apr 8, 8:49 PM CDT	Severe Thunderstorm Warning	OHX	Bledsoe	56 min
Apr 8, 9:03 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford	57 min
Apr 8, 9:13 PM CDT	Severe Thunderstorm Warning	OHX	Cannon	47 min
Apr 8, 9:32 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Warren	58 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1998 Every severe thunderstorm warning in 1998

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.