Alert archive / Tennessee / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 192, NWS Nashville, TN

May 20, 20258 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 20, 2025, 5:21 PM CDT for 8 counties in Tennessee. It was in force for 54 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: May 20, 2025, 5:21 PM CDT (22:21 UTC)
Expired: May 20, 2025, 6:15 PM CDT
In force: 54 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cheatham County, TN, Dickson County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Montgomery County, TN, Perry County, TN, Williamson County, TN

The radar

The Ft Campbell radar (KHPX), 75 km from the middle of the area, began a volume at 22:21 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 20, 2:36 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.4 hours before the alert went out and 76 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: 1162 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 904 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 3.9

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 May 20, 12:46 PM CDT, 4 hours 35 minutes earlier. Its key messages:

Updated at 1237 PM CDT Tue May 20 2025
There is an enhanced risk (level 3 out of 5) for severe storms today. All modes of severe weather are possible, including damaging winds, hail, and tornadoes.
Cooler temperatures move over the area Wednesday and through early next week along with some chances for showers and thunderstorms through the weekend.

Area forecast discussion, May 20, 12:46 PM CDT, 4 hours 35 minutes before

Area Forecast Discussion
National Weather Service Nashville TN
Issued by National Weather Service Morristown TN
1246 PM CDT Tue May 20 2025

...New AVIATION...

.KEY MESSAGES...
Updated at 1237 PM CDT Tue May 20 2025

- There is an enhanced risk (level 3 out of 5) for severe storms
  today. All modes of severe weather are possible, including
  damaging winds, hail, and tornadoes.

- Cooler temperatures move over the area Wednesday and through
  early next week along with some chances for showers and
  thunderstorms through the weekend.

&&

.SHORT TERM...
(Rest of today through Wednesday)
Issued at 1055 AM CDT Tue May 20 2025

Our previously forecasted morning/early afternoon showers and
thunderstorms are moving through Middle TN. As expected, the
environment is not quite primed enough for any widespread severe
storms. At this time, biggest impacts with any of these storms
look to be gusty winds and heavy downpours as the line of storms
arrive.

We continue to monitor the severe threat with another round of
storms is forecasted to impact our area later this afternoon through
the evening. The question is, how much is the atmosphere going to
recover from this mornings convection before the next round.
Satellite imagery shows a sharp gradient of clear skies over W TN,
just behind this mornings convection. This dry slot is expected to
push east ahead of our advancing mid-level trough. As it does so,
surface instability should increase. Additionally, strong deep-
layer shear and surface to mid-level lapse rates will increase through
the late afternoon. With these factors in place, this afternoon
and evening's convection will have a better potential for severe
storms.

Storms move out of the area by 10 pm tonight, ushering in cooler
and dryer air. Wednesday looks reasonably dry with highs in the
upper 70s. Late Wednesday night, a shortwave lifts to the NE and
brings increasing showers and thunderstorm chances across the SW.
Not seeing any severe storm concerns with these at this time.

&&

.LONG TERM...
(Wednesday Night through next Tuesday)
Issued at 1055 AM CDT Tue May 20 2025

Thursday and Friday remain mostly dry as a ridge builds to the
SW. Cooler temperatures also stick around with highs in the 70s.
Middle TN will remain on the backside of the ridge by the weekend
with a short wave rolling over the ridge Sunday. This will
introduce better rain chances back into the forecast, sticking
around through early next week.

&&

.AVIATION...
(18Z TAFS)
Issued at 1237 PM CDT Tue May 20 2025

Mixed bag this afternoon with SRB/CSV seeing showers and
thunderstorms with some marginal CIGs, while CKV/BNA/MQY are
seeing clearing skies behind a line of storms. Widespread VFR
conditions will prevail until after 21z when another round of
showers and thunderstorms move through the area. Storms have the
potential to be severe with damaging winds, large hail, and
tornadoes. Clearing conditions return after 00z. Strong NW winds
develops after 12z tonight.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      64  81  60  77 /  60   0  20  20
Clarksville    60  78  58  74 /  40   0  20  10
Crossville     61  73  54  70 /  80  10  10  30
Columbia       61  80  59  77 /  50   0  20  20
Cookeville     62  75  56  71 /  80   0  10  30
Jamestown      60  74  53  70 /  90   0  10  40
Lawrenceburg   61  79  58  77 /  60   0  20  20
Murfreesboro   63  80  58  77 /  70   0  20  20
Waverly        57  78  57  74 /  40   0  20  10

&&

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

SHORT TERM...Cravens
LONG TERM....Cravens
AVIATION.....Cravens

In the hours before

Local storm report, May 20, 5:08 PM CDT, 13 minutes before

Preliminary Local Storm Report
National Weather Service Nashville TN
508 PM CDT Tue May 20 2025

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

0442 PM     Hail             7 SSE Franklin          35.84N 86.80W
05/20/2025  M3.00 Inch       Williamson         TN   NWS Employee

            Measured 3 inch hail in Franklin. Time
            estimated from radar.

&&

Local storm report, May 20, 5:10 PM CDT, 11 minutes before

Preliminary Local Storm Report
National Weather Service Nashville TN
510 PM CDT Tue May 20 2025

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

0436 PM     Hail             6 SW Franklin           35.88N 86.92W
05/20/2025  E2.75 Inch       Williamson         TN   Public

            Estimated baseball size hail near Franklin.
            Time estimated from radar.

&&

Local storm report, May 20, 5:11 PM CDT, 10 minutes before

Preliminary Local Storm Report
National Weather Service Nashville TN
511 PM CDT Tue May 20 2025

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

0456 PM     Hail             2 SSE Columbia          35.60N 87.04W
05/20/2025  E1.25 Inch       Maury              TN   Public

            Hail a little bigger than quarters reported
            in Columbia. Time estimated from radar.

&&

Local storm report, May 20, 5:13 PM CDT, 8 minutes before

Preliminary Local Storm Report
National Weather Service Nashville TN
513 PM CDT Tue May 20 2025

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

0440 PM     Tstm Wnd Dmg     2 W Dover               36.48N 87.88W
05/20/2025                   Stewart            TN   Emergency Mngr

            EM reports downed trees and structure damage
            west of Dover. Time estimated from radar.

&&

Local storm report, May 20, 5:16 PM CDT, 5 minutes before

Preliminary Local Storm Report
National Weather Service Nashville TN
516 PM CDT Tue May 20 2025

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

0502 PM     Hail             5 E Columbia            35.62N 86.96W
05/20/2025  M2.00 Inch       Maury              TN   Amateur Radio

            Measured 2 inch hail on Tom Osborne Road
            near Boyd Butler Road. Time estimated from
            radar.

&&

Local storm report, May 20, 5:21 PM CDT, 0 minutes before

Preliminary Local Storm Report
National Weather Service Nashville TN
521 PM CDT Tue May 20 2025

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

0521 PM     Tornado          4 NNW Clarksville       36.62N 87.38W
05/20/2025                   Montgomery         TN   Broadcast Media

            Ongoing tornado, also confirmed by radar.

&&

RRH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 9:39 AM CDT	Severe Thunderstorm Warning	OHX	Hickman, Perry	36 min
May 20, 10:02 AM CDT	Severe Thunderstorm Warning	OHX	Wayne	43 min
May 20, 10:20 AM CDT	Special Weather Statement	OHX	Williamson	40 min
May 20, 10:41 AM CDT	Special Weather Statement	OHX	Lewis	49 min
May 20, 12:40 PM CDT	Tornado Warning	OHX	Lawrence, Wayne	50 min
May 20, 1:26 PM CDT	Special Weather Statement	OHX	Giles	34 min
May 20, 1:59 PM CDT	Special Weather Statement	OHX	Giles	31 min
May 20, 2:14 PM CDT	Tornado Warning	OHX	Giles	15 min
May 20, 2:56 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Humphreys, Perry	64 min
May 20, 3:02 PM CDT	Tornado Warning Tornado observed	OHX	Hickman, Lewis, Maury	28 min
May 20, 3:39 PM CDT	Tornado Warning	OHX	Hickman	36 min
May 20, 3:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OHX	Davidson, Dickson, Hickman, Maury, Williamson	64 min
May 20, 3:58 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy	62 min
May 20, 4:23 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Montgomery, Stewart	67 min
May 20, 4:27 PM CDT	Tornado Warning	OHX	Lawrence, Lewis, Maury	33 min
May 20, 4:32 PM CDT	Tornado Warning	OHX	Stewart	28 min
May 20, 4:40 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys	54 min
May 20, 4:49 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OHX	Cannon, Davidson, Rutherford, Williamson, Wilson	56 min
May 20, 4:55 PM CDT	Tornado Warning	OHX	Marshall, Maury, Williamson	35 min
May 20, 5:11 PM CDT	Tornado Warning	OHX	Montgomery, Robertson	21 min
May 20, 5:23 PM CDT	Tornado Warning	OHX	Bedford, Marshall, Rutherford	37 min
May 20, 5:26 PM CDT	Tornado Warning	OHX	Montgomery, Robertson	34 min
May 20, 5:27 PM CDT	Areal Flood Advisory	OHX	Davidson, Maury, Rutherford, Williamson	4 hr
May 20, 5:30 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Montgomery, Robertson, Sumner	64 min
May 20, 5:39 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OHX	Cannon, DeKalb, Rutherford, Wilson	66 min
May 20, 5:48 PM CDT	Tornado Warning	OHX	Bedford, Cannon, Coffee, Grundy, Warren	42 min
May 20, 5:55 PM CDT	Tornado Warning	OHX	Cannon, Coffee, Rutherford	35 min
May 20, 6:06 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Hickman, Maury, Rutherford, Sumner and 3 more	54 min
May 20, 6:23 PM CDT	Flash Flood Warning	OHX	Cheatham, Davidson, Maury, Rutherford, Williamson, Wilson	3 hr
May 20, 6:24 PM CDT	Tornado Warning	OHX	Bedford, Cannon, Coffee, Rutherford	51 min
May 20, 6:26 PM CDT	Flash Flood Warning	OHX	Cheatham, Davidson, Dickson, Robertson, Sumner, Trousdale and 1 more	3 hr
May 20, 6:27 PM CDT	Tornado Warning	OHX	Van Buren, Warren	33 min
May 20, 6:30 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Macon, Sumner, Trousdale	25 min
May 20, 6:54 PM CDT	Tornado Warning	OHX	Cumberland, Van Buren, White	66 min
May 20, 6:58 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Jackson, Putnam, Smith, White, Wilson	47 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2025 Every severe thunderstorm warning in 2025

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.