Alert archive / Tennessee / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 215, NWS Nashville, TN

August 2, 2001Lawrence County, Lewis County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 2, 2001, 7:11 PM CDT for Lawrence County, Lewis County, Tennessee. It was in force for 34 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: Aug 2, 2001, 7:11 PM CDT (00:11 UTC)
Expired: Aug 2, 2001, 7:45 PM CDT
In force: 34 min
Issued by: NWS Nashville, TN
Area: Whole counties

Counties Lawrence County, TN, Lewis County, TN

The radar

The Nashville radar (KOHX), 126 km from the middle of the area, began a volume at 00:12 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 00:00Z, 0.2 hours before the alert went out and 114 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: 1779 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1300 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOHX 030013
SVRBNA

TNC099-101-030045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
711 PM CDT THU AUG 2 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN LAWRENCE COUNTY IN TENNESSEE
  SOUTHEASTERN LEWIS COUNTY IN TENNESSEE

* UNTIL 745 PM CDT

* AT 706 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER MOUNT PLEASANT...OR ABOUT 13 MILES
  SOUTHWEST OF COLUMBIA...MOVING SOUTHWEST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE ACROSS EXTREME SOUTHEAST LEWIS 
COUNTY, AND INTO NORTHERN LAWRENCE COUNTY. TOWNS IN THE PATH OF THIS 
STORM INCLUDE SUMMERTOWN.

DESTRUCTIVE WINDS CAN BE EXPECTED. IF YOU CANNOT GET UNDERGROUND...GO
TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS!
$$
MAR
LAT...LON 3550 8710 3563 8726 3540 8758 3524 8738

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 Aug 2, 3:09 PM CDT, 4 hours 2 minutes earlier.

Area forecast discussion, Aug 2, 3:09 PM CDT, 4 hours 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
309 PM CDT THU AUG 2 2001

CURRENTLY...ISOLATED SHOWERS HAVE DEVELOPED IN THE HEAT OF THE DAY.
TYPICAL SUMMER DAY...WITH TEMPS RISING INTO THE LOWER 90S...MIDDLE
80S PLATEAU. DEW POINTS FROM THE LOWER 70S NORTHWEST...TO THE UPPER
60S SOUTHEAST MIDDLE. SKIES ARE PARTLY SUNNY WITH THE AFTERNOON
CUMULUS. SFC TROUGH FROM SRN IA...TO NRN IL...TO MICHIGAN SHOULD
START SEEING MORE CONVECTION POPPING THROUGH THE REMAINDER OF THE
AFTERNOON. ALSO...THERE IS AN OUTFLOW BOUNDARY MOVING SOUTHWARD OUT
OF CENTRAL ILLINOIS...AS CONVECTION CONTINUES TO PLOD SOUTH FROM LAST
NIGHT. INTERESTING LOW PRESSURE SYSTEM IN THE EASTERN GULF
OF MEXICO...WHICH COULD AFFECT OUR WEATHER DOWN THE ROAD.

FORECAST CONCERNS...PRECIP CHANCES.

AFOREMENTIONED THUNDERSTORM/OUTFLOW BOUNDARY IN CENTRAL ILLINOIS
WILL NOT AFFECT MIDDLE TENNESSEE...AS THE NEW CONVECTION IS FEEDING
OFF THE BETTER SOUTHWEST FLOW FROM MISSOURI. FOR TONIGHT...WE CAN
EXPECT A FEW ISOLATED SHOWERS EARLY TONIGHT...THEN THE BOUNDARY
CURRENTLY STRETCHED FROM SRN IA...TO NRN ILLINOIS AND MICHIGAN WIL
DROP SOUTWARD INTO THE NW MIDSTATE BY DAYBREAK. NOT EXPECTING ALOT
OF CONVECTION...AS THE FORCING...DYNAMICS AND SFC CONVERGENCE ARE
UNIMPRESSIVE. MOISTURE AHEAD OF THE BOUNDARY WILL BE ON THE RISE...
AND AN INCREASE IN CLOUDS WIL LIKELY MOVE INTO THE NRN MIDSTATE.

THE ACTUAL BOUNDARY WILL BE COMING THROUGH TOMORROW DURING THE
DAY...THEN STALL OUT BY TOMORROW NIGHT JUST SOUTHEAST OF THE AREA.
THE CONVERGENCE...MOISTURE AND INCREASE IN THE LOW TO MID LEVEL
INSTABILITY WILL INDUCE SCATTERED SHOWERS AND THUNDERSTORMS. MAYBE
SOME ISOLATED ACTIVITY AROUND TOMORROW NIGHT BEFORE THE BOUNDARY
SLIDES SOUTHEAST. BEST CONVEREGNCE REMAINS NEAREST THE BOUNDARY...IN
SOUTHEAST MID TN ON SATURDAY...AND WILL LEAVE BEST POPS THERE.

SUNDAY...THROUGH THE REST OF THE FORECAST WILL BE INFLUENCED BY
THE LOW PRESSURE SYSTEM SPINNING OFF THE GULF. THIS SYSTEM IS
PROJECTED TO MOVE WESTWARD ACROSS THE GULF...DRAGGING AN INVERTED
TROUGH ALONG WITH IT. OUR WINDS WILL SHIFT FROM NORTH TO
SOUTHEAST...ALTHOUGH BEST CONVERGENCE LOOKS TO REMAIN ALONG THE
IMMEDIATE GULF COAST. HENCE...BEST RAIN CHANCES WITH THIS SYSTEM
WILL BE THERE. DO NOT HOLD MUCH STOCK IN GETTING RAIN IN MIDDLE
TENNESSEE ATTM. WILL NOT BITE YET.

TYPICAL SUMMERTIME TEMPS ARE IN STORE FOR THE NEXT COUPLE OF DAYS...
AS AXIS OF WARMER H8 AIR REMAINS OUT TO THE WEST...HIGHS WILL BE
FLIRTING WITH 90 WEST AND MIDDLE TO UPPER 80S EAST. NO REAL CHANGES
IN AIR MASS...SO LOWS WILL GENERALLY RANGE IN THE UPPER 60S TO
LOWER 70S THROUGH SATURDAY. INCREASE IN CLOUDS TONIGHT MAY RESULT
IN SOMEWHAT HIGHER MINS TONIGHT.

HERE ARE THE NUMBERS...

BNA 73/90/71/89 2321
CSV 66/83/65/84 1431

.BNA...NONE

DICKSON 15

In the hours before

Local storm report, Aug 2, 6:30 PM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE,TN
630 PM CDT THU AUG 2 2001

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

06(07 PM    5 S SPRING HILL           TN   65 MPH TSTM WIND GUST
08/02/01   MAURY                          AMATEUR RADIO REPORT OF A
                                          TREE DOWN.

END/ORCHANIAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 5:40 PM CDT	Severe Thunderstorm Warning	OHX	Robertson	35 min
Aug 3, 6:08 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys	37 min
Aug 3, 6:15 PM CDT	Severe Thunderstorm Warning	OHX	Sumner	45 min
Aug 3, 6:31 PM CDT	Severe Thunderstorm Warning	OHX	Davidson	29 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.