Alert archive / Tennessee / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 147, NWS Nashville, TN

September 21, 2026Putnam County, White County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Sep 21, 2026, 8:41 PM CDT for Putnam County, White County, Tennessee. It was in force for 31 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: Sep 21, 2026, 8:41 PM CDT (01:41 UTC)
Expired: Sep 21, 2026, 9:12 PM CDT
In force: 31 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Putnam County, TN, White County, TN

The radar

The Nashville radar (KOHX), 101 km from the middle of the area, began a volume at 01:42 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, 1.7 hours before the alert went out and 102 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: 734 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 2090 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Sep 21, 6:33 PM CDT, 2 hours 8 minutes earlier. Its key messages:

Updated at 625 PM CDT Mon Sep 21 2026
Low chance of severe weather this evening across Middle TN. Damaging winds are the primary threat.
Major heat relief is on the way with temperatures falling to near normal levels by Wednesday.

Area forecast discussion, Sep 21, 6:33 PM CDT, 2 hours 8 minutes before

Area Forecast Discussion
National Weather Service Nashville TN
633 PM CDT Mon Sep 21 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 625 PM CDT Mon Sep 21 2026

- Low chance of severe weather this evening across Middle TN.
  Damaging winds are the primary threat.

- Major heat relief is on the way with temperatures falling to near
  normal levels by Wednesday.

&&

.SHORT TERM...
(Rest of today through Tuesday)
Issued at 1112 AM CDT Mon Sep 21 2026

A stationary front that has been draped across the TN Valley for
several days will finally get a move on today. Expect a
reinvigoration of convective activity along the front this
afternoon and evening aided by peak heating. CAMs are painting a
pretty sporadic picture in terms of spatial coverage of storms
today. The boundary is oriented SW-NE across TN but storms will be
pretty scattered across the state. Forecast soundings suggest
DCAPE on the order of 1000 J/kg, which is plenty to produce a few
strong downbursts up to 60 MPH. Shear is pretty lacking, so don't
expect any multicellular convection or organized updrafts. They'll
most likely be single celled microbursts like we see in the
summertime.

The front won't make it through Middle TN until Tuesday, so PoPs
are still in the 40-60% range through Tuesday morning. The
wonderful news is that things will FINALLY cool down for a
meaningful period behind this front. Tuesday is kind of our
transition day as rain cools the region and the cooler, drier air
behind the boundary starts to build in. Highs finally drop below
90 degrees on Tuesday afternoon for the first time in several
weeks.

&&

.LONG TERM...
(Tuesday Night through next Monday)
Issued at 1112 AM CDT Mon Sep 21 2026

Wednesday begins our first true taste of fall. Cool, dry air will
send temperatures much closer to normal in the low 80s for the
rest of the work week. With high pressure in place to promote
radiational cooling and resultant CAA, overnight lows continue to
cool and will drop into the 50s by Saturday. PoPs remain below
15% through the weekend but start to creep back up early next
week.

&&

.AVIATION...
(00Z TAFS)
Issued at 625 PM CDT Mon Sep 21 2026

A frontal zone moving in from the northwest will create isolated
showers and storms this evening with PROB30 groups in area
terminal forecasts. Otherwise, VFR conditions this evening will
drop to mainly MVFR overnight as lower cigs form. CSV and SRB will
drop to LIFR at times with dense fog and stratus. Conditions will
improve to VFR by 16Z Wednesday. Winds will be mainly N to NE
5-10KT through the period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      68  87  65  83 /  40  20   0   0
Clarksville    67  85  63  82 /  10  10   0   0
Crossville     64  82  61  77 /  50  60  20  50
Columbia       68  90  65  86 /  30  30   0   0
Cookeville     66  83  63  78 /  50  40  10  30
Jamestown      65  81  62  76 /  60  50  20  40
Lawrenceburg   67  89  64  84 /  50  40  10  10
Murfreesboro   68  89  65  85 /  40  30  10  10
Waverly        68  85  64  81 /  20  10   0   0

&&

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

SHORT TERM...Dirkes
LONG TERM....Dirkes
AVIATION.....13

In the hours before

Special weather statement, Sep 21, 5:42 PM CDT, 2 hours 59 minutes before

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Local storm report, Sep 21, 6:02 PM CDT, 2 hours 39 minutes before

Preliminary Local Storm Report
National Weather Service Nashville TN
602 PM CDT Mon Sep 21 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0518 PM     Hail             4 SE Lawrenceburg       35.20N 87.28W
09/21/2026  E0.70 Inch       Lawrence           TN   Emergency Mngr

            Hail up to dime size near US 64 and Wesley
            Chapel Rd and Marable Rd.

&&

AS

Local storm report, Sep 21, 6:04 PM CDT, 2 hours 37 minutes before

Preliminary Local Storm Report
National Weather Service Nashville TN
604 PM CDT Mon Sep 21 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0521 PM     Tstm Wnd Dmg     5 SE Lawrenceburg       35.19N 87.28W
09/21/2026                   Lawrence           TN   Emergency Mngr

            Numerous trees reported down along with
            utility lines, southeast portion of
            Lawrenceburg.

&&

AS

Special weather statement, Sep 21, 6:09 PM CDT, 2 hours 32 minutes before

Special Weather Statement
National Weather Service Nashville TN
609 PM CDT Mon Sep 21 2026

TNZ095-212345-
Giles TN-
609 PM CDT Mon Sep 21 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN GILES COUNTY
THROUGH 645 PM CDT...

At 609 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles south of Pulaski, moving southeast at 20 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Pulaski, Ardmore, Elkton, and Prospect.

This includes Interstate 65 between mile markers 1 and 12.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3500 8718 3521 8704 3516 8683 3499 8684
TIME...MOT...LOC 2309Z 297DEG 16KT 3509 8699

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

40/Sizemore

Special weather statement, Sep 21, 7:46 PM CDT, 55 minutes before

Special Weather Statement
National Weather Service Nashville TN
746 PM CDT Mon Sep 21 2026

TNZ011-220115-
Pickett TN-
746 PM CDT Mon Sep 21 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN PICKETT COUNTY
THROUGH 815 PM CDT...

At 746 PM CDT, Doppler radar was tracking a strong thunderstorm over
Mount Pisgah, or 12 miles south of Monticello, moving southeast at 15
mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Pickett State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3652 8478 3654 8481 3655 8482 3656 8484
      3660 8493 3661 8494 3660 8479 3653 8473
TIME...MOT...LOC 0046Z 294DEG 14KT 3666 8481

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

40/Sizemore

Special weather statement, Sep 21, 8:10 PM CDT, 31 minutes before

Special Weather Statement
National Weather Service Nashville TN
810 PM CDT Mon Sep 21 2026

TNZ032-065-220200-
Putnam TN-White TN-
810 PM CDT Mon Sep 21 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTH CENTRAL WHITE AND WESTERN
PUTNAM COUNTIES THROUGH 900 PM CDT...

At 810 PM CDT, Doppler radar was tracking a strong thunderstorm over
Baxter, or 9 miles west of Cookeville, moving east at 15 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Cookeville, Baxter, Burgess Falls State Park, and Hamptons
Crossroads.

This includes Interstate 40 between mile markers 271 and 289.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3625 8546 3602 8547 3606 8569 3608 8572
      3607 8574 3608 8577 3622 8573 3623 8567
      3622 8566 3622 8564 3621 8563 3623 8559
      3623 8558 3622 8557 3624 8554
TIME...MOT...LOC 0110Z 273DEG 13KT 3614 8567

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

40/Sizemore

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 21, 7:46 PM CDT	Special Weather Statement	OHX	Pickett	29 min
Sep 21, 8:10 PM CDT	Special Weather Statement	OHX	Putnam	50 min
Sep 21, 8:43 PM CDT	Special Weather Statement	OHX	Overton	47 min
Sep 21, 9:19 PM CDT	Flash Flood Warning	OHX	Cumberland	5 hr
Sep 21, 9:42 PM CDT	Flash Flood Warning	OHX	Jackson, Overton	3 hr
Sep 21, 9:50 PM CDT	Special Weather Statement	OHX	Cannon	25 min
Sep 21, 11:25 PM CDT	Special Weather Statement	OHX	Cumberland	50 min
Sep 22, 2:11 AM CDT	Special Weather Statement	OHX	Cumberland	49 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2026 Every severe thunderstorm warning in 2026

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.