Alert archive / Tennessee / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 202, NWS Nashville, TN

July 9, 2001Rutherford County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 9, 2001, 3:19 PM CDT for Rutherford 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: Jul 9, 2001, 3:19 PM CDT (20:19 UTC)
Expired: Jul 9, 2001, 3:55 PM CDT
In force: 36 min
Issued by: NWS Nashville, TN
Area: Whole counties

County Rutherford County, TN

The radar

The Nashville radar (KOHX), 47 km from the middle of the area, began a volume at 20:23 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
Jul 9, 1:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.3 hours before the alert went out and 36 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: 1891 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOHX 092020
SVRBNA

TNC149-092045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
319 PM CDT MON JUL 9 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL RUTHERFORD COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF MURFREESBORO

* UNTIL 355 PM CDT

* AT 317 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM OVER MURFREESBORO...MOVING VERY SLOWLY 
SOUTHEAST.
 
DAMAGING WINDS AND HAIL WITH TORRENTIAL RAINFALL ARE EXPECTED WITH
THIS STORM. TAKE COVER IN A STURDY STRUCTURE UNTIL THE STORM PASSES.

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY
MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO
RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT MONDAY
EVENING FOR TENNESSEE.

$$

GIRODO
LAT...LON 3584 8647 3576 8630 3592 8616 3597 8632
          3594 8642

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 Jul 9, 10:00 AM CDT, 5 hours 19 minutes earlier.

Area forecast discussion, Jul 9, 10:00 AM CDT, 5 hours 19 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
1000 AM CDT MON JUL 9 2001

CONVECTION HAS BEEN DEVELOPING FROM SOUTH IL INTO KY WITH MOVEMENT
TOWARD THE SOUTHEAST. VARIOUS BOUNDARIES HAVE MOVED ACROSS OUR
FORECAST AREA. AT LEAST A COUPLE BOUNDARIES EVIDENT FROM VISIBLE
IMAGES AND RADAR. ONE HAS MOVED INTO NORTH AL WITH ANOTHER MOVING
INTO SOUTH MID TN. MORE ARE CERTAINLY DRIFTING AROUND THE AREA. FEW
CELLS STARTING TO DEVELOP ALONG TN/KY BORDER.

CURRENT FORECAST HAS RIGHT IDEA WITH GREATEST PROBABILITY FOR
THUNDERSTORMS OVER PLATEAU...AND LOWEST CHANCE IN THE SOUTHWEST.
GREATER LOW LEVEL CONVERGENCE EXPECTED IN THE NORTHEAST...AND
CAPPING WILL HELP INHIBIT CONVECTION SOUTHWEST. MAY HAVE A FEW
SEVERE STORMS THIS AFTERNOON WITH HEAVY RAIN AND STRONG WINDS MAIN
THREATS.

ANOTHER COMPLICATING FACTOR IS EXTENSIVE CLOUDINESS OVER NORTH MID
TN. TEMPERATURES WILL HAVE A HARD TIME REACHING 90 IF THE CLOUDINESS
PERSISTS. EXPECTING SOME VARIABILITY IN CLOUDINESS ACROSS ZONE...MAY
HAVE TO MAKE A NEW ZONE GROUP FOR TEMPERATURE DIFFERENCE. WILL
MONITOR OBSERVATIONS...AND PROBABLY TRIM BACK HIGHS JUST A LITTLE
FOR NASHVILLE AREA. SOUTHWE\ST CORNER OF MID TN STILL EXPECTED TO HIT
MID 90S.

.BNA...NONE.

SH

In the hours before

Special weather statement, Jul 9, 11:41 AM CDT, 3 hours 38 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-101030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
1141 AM CDT MON JUL 9 2001

...SCATTERED STRONG TO SEVERE STORMS THIS AFTERNOON...

A VERY UNSTABLE AIRMASS WILL COMBINE WITH SEVERAL SURFACE
TROUGHS TO PRODUCE AFTERNOON STORMS. THE BEST CHANCE FOR STORMS WILL
GENERALLY RESIDE EAST OF INTERSTATE 24...MAINLY IN THE NORTHERN
CUMBERLAND PLATEAU. THE LEAST CHANCE WILL BE IN SOUTHWEST MIDDLE
TENNESSEE...TOWARD THE MISSISSIPPI BORDER.

SOME OF THESE STORMS WILL BE STRONG TO SEVERE...WITH THE MAIN
THREAT BEING LOCALLY HEAVY RAIN AND SOME FLOODING...DUE TO THE HIGH
WATER CONTENT IN THE ATMOSPHERE. THE OTHER THREAT IS< STRONG DAMAGING
WINDS...POSSIBLY IN EXCESS OF 60 MPH.  DUE TO VERY WARM MID LEVELS...
HAIL IS NOT A MAJOR CONCERN.

ACTIVATION OF EMERGENCY MANAGERS AND SPOTTERS MAY BE NEEDED THIS
AFTERNOON AND EVENING.

JDG

Local storm report, Jul 9, 2:33 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE,TN
233 PM CDT MON JUL 9 2001

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

0140 PM    COOKEVILLE                TN   WIND DAMAGE
07/09/01   PUTNAM                         PUBLIC REPORTED THREE
                                          TREES DOWN ON EAST SIDE OF
                                          COOKEVILLE

HS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 2:34 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	26 min
Jul 9, 3:25 PM CDT	Flash Flood Warning	OHX	Rutherford	2 hr
Jul 9, 3:42 PM CDT	Severe Thunderstorm Warning	OHX	Marshall	33 min
Jul 9, 4:21 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Marshall	54 min
Jul 9, 5:02 PM CDT	Severe Thunderstorm Warning	OHX	Lincoln	58 min
Jul 9, 6:44 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	61 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2001 Every severe thunderstorm warning in 2001

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.