Alert archive / Tennessee / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 180, NWS Nashville, TN

June 9, 1999Lawrence County, Lewis County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 9, 1999, 12:20 PM CDT for Lawrence County, Lewis County, Tennessee. It was in force for 40 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
Jun 9, 1999, 12:20 PM CDT (17:20 UTC)
Expired
Jun 9, 1999, 1:00 PM CDT
In force
40 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 17:21 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, 5.3 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 1999-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1232 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 1999-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1232 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Jun 9, 10:00 AM CDT, 2 hours 20 minutes earlier.

Area forecast discussion, Jun 9, 10:00 AM CDT, 2 hours 20 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
1000 AM CDT WED JUN 9 1999

MD/UPR ATLANTIC RIDGE REACHING BACK ACROSS FA SHUD KEEP PRECIP AGAIN
AT A MINIMUM.  20 POP FOR THIS AFTERNOON ACROSS WESTERN ZONES LOOKING
GOOD WITH WEAK MOISTURE CONVERGENCE AND STRONG INSTABILITY AXIS IN
THE VICINITY.  TEMPS SHOULD AGAIN HAVE NO PROBLEM REACHING FORECAST
LEVELS.  NO UPDATES PLANNED AT THIS TIME.  07

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 12:29 PM CDTFlash Flood WarningOHXLawrence3 hr
Jun 9, 12:46 PM CDTSevere Thunderstorm WarningOHXWayne59 min
Jun 9, 4:12 PM CDTSevere Thunderstorm WarningOHXGiles48 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1999Every severe thunderstorm warning in 1999

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.