Alert archive / Tennessee / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 157, NWS Nashville, TN

August 2, 2024Cannon County, Warren County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 2, 2024, 2:45 PM CDT for Cannon County, Warren County, Tennessee. It was in force for 30 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, 2024, 2:45 PM CDT (19:45 UTC)
Expired
Aug 2, 2024, 3:15 PM CDT
In force
30 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cannon County, TN, Warren County, TN

The radar

The Nashville radar (KOHX), 80 km from the middle of the area, began a volume at 19:46 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, 7.8 hours before the alert went out and 75 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 2024-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1548 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 2024-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.193958Sfc1 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
1548 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
961 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.9

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 Aug 2, 12:43 PM CDT, 2 hours 2 minutes earlier.

Area forecast discussion, Aug 2, 12:43 PM CDT, 2 hours 2 minutes before
Area Forecast Discussion...CORRECTED
National Weather Service Nashville TN
1243 PM CDT Fri Aug 2 2024

...New AVIATION...

.SHORT TERM...
(Rest of today through Saturday)
Issued at 1102 AM CDT Fri Aug 2 2024

An upper-level low can be seen on satellite imagery to our north
over Indiana and Ohio, and surface observations show a cold front
just beginning to enter western TN. With abundant moisture present
as seen by dewpoints in the 70s and a PWAT of 1.63 inches on this
morning's sounding, storm coverage will once again increase this
afternoon with storms favoring areas east of I-65. Frequent
lightning and heavy rain will be the main concerns with any storm,
but damaging winds can't be ruled out and this lines up with the
current SPC Day 1 Outlook which places this area in a marginal
risk this afternoon.

Coverage will gradually come to an end after sunset, and the
upper-level low will slowly move to the east as the cold front
clears the area. Temperatures will be slightly cooler Saturday as
highs range from the mid 80s to low 90s. With drier air in place,
most will be storm-free, too, but isolated to scattered storms
will continue across the Plateau with troughing still in place in
this area.

&&

.LONG TERM...
(Saturday Night through next Friday)
Issued at 1102 AM CDT Fri Aug 2 2024

Weather conditions look to be much quieter as we head into the new
week as an area of high pressure builds over the Rockies and dry
northwest flow prevails over Middle TN. Dry conditions are
expected through at least the middle of next week, and high
temperatures will creep into the mid and upper 90s. Unfortunately,
this also means the return of triple digit heat index values.

There is uncertainty in the weather pattern by the time we get
into Thursday with models and ensembles advertising two primary
scenarios. The first scenario that is strongly supported by the
European and its ensembles and some of the Canadian ensembles is
that the upper-level high over the Rockies builds back towards the
east, producing strong ridging over the central CONUS. However,
the GFS and its ensembles support the breakdown of that high as a
troughing pattern reemerges over the Midwest area. Scenario 1
supports dry and very hot conditions while scenario 2 produces
more chances for rain and perhaps a break from the heat.
Unfortunately, scenario 1 appears to be the most likely scenario
at this point with about 60% of all ensembles supporting it. But
stay tuned.

&&

.AVIATION...
(18Z TAFS)
Issued at 1214 PM CDT Fri Aug 2 2024

A weak boundary will continue its way through middle TN. Have
included storms for BNA/MQY/CSV/SRB. In addition models are
hinting at low VIS and CIG overnight...especially for the plateau.

Winds will be westerly and swing around to the north.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      72  91  72  94 /  10  10  10   0
Clarksville    70  89  70  92 /  10   0  10   0
Crossville     66  82  64  86 /  30  50  10  10
Columbia       70  90  69  93 /  10  10  10   0
Cookeville     68  82  67  86 /  20  40  20   0
Jamestown      66  81  65  86 /  30  50  10   0
Lawrenceburg   70  88  69  91 /  10  10  10   0
Murfreesboro   70  90  69  93 /  20  10  10   0
Waverly        70  91  70  94 /  10   0  10   0

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
None.
&&

SHORT TERM...Clements
LONG TERM....Clements
AVIATION.....12

In the hours before

Special weather statement, Aug 2, 2:17 PM CDT, 28 minutes before
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Special weather statement, Aug 2, 2:18 PM CDT, 27 minutes before
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Special weather statement, Aug 2, 2:21 PM CDT, 24 minutes before
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Special weather statement, Aug 2, 2:22 PM CDT, 23 minutes before
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Special weather statement, Aug 2, 2:24 PM CDT, 21 minutes before
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Special weather statement, Aug 2, 2:41 PM CDT, 4 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 7:24 PM CDTSpecial Weather StatementOHXRobertson36 min
Aug 1, 8:22 PM CDTSevere Thunderstorm WarningOHXMontgomery38 min
Aug 1, 8:39 PM CDTSpecial Weather StatementOHXSumner36 min
Aug 1, 8:46 PM CDTSevere Thunderstorm WarningOHXSumner, Wilson24 min
Aug 1, 8:55 PM CDTSpecial Weather StatementOHXCheatham, Montgomery35 min
Aug 1, 9:37 PM CDTSpecial Weather StatementOHXDavidson38 min
Aug 1, 9:54 PM CDTSevere Thunderstorm WarningOHXDavidson, Sumner, Wilson36 min
Aug 2, 1:47 PM CDTSpecial Weather StatementOHXRutherford28 min
Aug 2, 1:49 PM CDTSpecial Weather StatementOHXFentress26 min
Aug 2, 2:11 PM CDTSpecial Weather StatementOHXCannon, DeKalb34 min
Aug 2, 2:17 PM CDTSpecial Weather StatementOHXWilson28 min
Aug 2, 2:18 PM CDTSpecial Weather StatementOHXFentress27 min
Aug 2, 2:21 PM CDTSpecial Weather StatementOHXDavidson24 min
Aug 2, 2:22 PM CDTSpecial Weather StatementOHXGiles23 min
Aug 2, 2:24 PM CDTSpecial Weather StatementOHXBedford36 min
Aug 2, 2:27 PM CDTAreal Flood AdvisoryOHXCannon, Rutherford63 min
Aug 2, 2:41 PM CDTSpecial Weather StatementOHXCannon34 min
Aug 2, 2:51 PM CDTSevere Thunderstorm WarningOHXWilson24 min
Aug 2, 3:12 PM CDTSpecial Weather StatementOHXCoffee33 min
Aug 2, 3:44 PM CDTSpecial Weather StatementOHXCoffee31 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2024Every severe thunderstorm warning in 2024

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.