Alert archive / Tennessee / Special Weather Statements in 2023

Special Weather Statement, NWS Nashville, TN

May 7, 2023Davidson County, Tennessee

NWS Nashville, TN issued this special weather statement at May 7, 2023, 6:21 PM CDT for Davidson County, Tennessee. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 7, 2023, 6:21 PM CDT (23:21 UTC)
Expired
May 7, 2023, 7:00 PM CDT
In force
39 min
Issued by
NWS Nashville, TN
Hail
0.25 in
Wind
30

County Davidson County, TN

The radar

The Nashville radar (KOHX), 24 km from the middle of the area, began a volume at 23:19 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, 11.4 hours before the alert went out and 15 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 2023-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 117 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 2023-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 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
117 J/kg
Mixed-layer CIN
-332 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
303 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 7, 2:16 PM CDT, 4 hours 5 minutes earlier.

Area forecast discussion, May 7, 2:16 PM CDT, 4 hours 5 minutes before
Area Forecast Discussion
National Weather Service Nashville TN
216 PM CDT Sun May 7 2023

...New SHORT TERM, LONG TERM...

.SHORT TERM...
(This afternoon through Tuesday Night)
Issued at 213 PM CDT Sun May 7 2023

Current regional mosaic showing The large area of showers and storms
moving southward across KY. We also see a developing complex across
se MO and northern AR. NBS pop data has been ticking upward and the
latest Hrrr and nam nest data showing increasing confidence levels
as well. So, the showers and storms across KY will impact our area
beginning around 2 PM or so. The developing complex west of the MS
river will be gaining strength and will intensify the existing
complex as it reach our area this evening. Furthermore, latest
instability parameters showing the most favorable areas across
across western TN and extending into our western and northwestern
areas. The higher downdraft capes are situated along the TN River at
this time. The storms to our north do have an earlier history of
some low end wind damage across northern KY. SPC has recently
upgraded basically our entire western half from marginal to slight
risk of severe. Wind and hail still look to be the likely threat
beginning this afternoon and into this evening.

Additionally to all of this is the potential for some localized
flooding in our northwest this evening and overnight. This will
depend largely on the trajectory of the aforementioned complex to
our west. If this can slam into the western flank of the southward
moving system, rainfall amounts will likely be enhanced. As it
stands right now, 2 inches of rainfall could be rather common across
our northwest by sunrise Monday. Local amounts of 3 inches can not
be ruled out. Note that there is not enough confidence to hoist a
flood watch. Also, understand that the short term model qpf maximums
are rather isolated and across our northwest. There also appears to
be some uncertainty as to the arrival of the developing MCS to our
west.

Moving on, the mcs pattern will remain into Monday as another system
moves through. The airmass will need to refuel in order for a second
round of severe to be possible. This looks somewhat questionable.
We are in a marginal for now. The primary cold front should move
through on Tuesday. We are not outlooked at this time. Improving
conditions will begin Tuesday night.

For the near term temps, it will be rather soupy and warm for early
May. Lows in the 60s with highs lower to mid 80s.

&&

.LONG TERM...
(Wednesday through next Sunday)
Issued at 213 PM CDT Sun May 7 2023

In the extended forecast, models are a little more bullish with
leaning toward some upper ridging for our area. There is some
progressiveness and the ridge looks rather narrow in scope. That
said, some shortwave impacts cannot be ruled out for Thursday and
Friday. We will see our shower and tstm chances climb into the
chance category for that time frame. Otw, continued mild and soupy.
Lows 60 to 65 and highs 80 to 85.

&&

.AVIATION...
(18Z TAFS)
Issued at 1237 PM CDT Sun May 7 2023

At 18Z watching a northern MCS coming down from KY. More is
expected to develop later this afternoon. This will mean ample
showers and thunderstorms in and around the TAF sites through the
overnight hours. Tried to time the best -TSRA with a TEMPO group
for the TAF sites. CIGs/VIS are currently VFR expect this to
become MVFR/IFR in and around the stronger storms. Gusty S winds
turning a bit SW.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      66  85  67  83 /  70  60  50  70
Clarksville    64  85  65  80 /  80  70  40  40
Crossville     59  76  62  78 /  70  70  60  80
Columbia       64  83  65  84 /  70  50  40  60
Cookeville     62  78  63  79 /  70  70  60  80
Jamestown      59  77  61  78 /  70  70  70  70
Lawrenceburg   64  82  65  83 /  70  50  40  60
Murfreesboro   63  82  64  83 /  70  60  50  70
Waverly        63  83  64  81 /  70  50  40  40

&&

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

SHORT TERM...21
LONG TERM....21
AVIATION.....12

In the hours before

Local storm report, May 7, 5:43 PM CDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
543 PM CDT SUN MAY 7 2023

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

0521 PM     HAIL             2 NW VANLEER            36.26N 87.46W
05/07/2023  E1.00 INCH       DICKSON            TN   PUBLIC

            QUARTER SIZE HAIL FELL AT THE INTERSECTION
            OF HWY 49 AND SLAYTON-MARION RD.

&&
Special weather statement, May 7, 5:47 PM CDT, 34 minutes before
Special Weather Statement
National Weather Service Nashville TN
547 PM CDT Sun May 7 2023

TNZ027-072315-
Davidson TN-
547 PM CDT Sun May 7 2023

...A strong thunderstorm will impact portions of central Davidson
County through 615 PM CDT...

At 546 PM CDT, Doppler radar was tracking a strong thunderstorm over
Belle Meade, or near Nashville, moving northeast at 20 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Nashville, Forest Hills, Oak Hill, Belle Meade, Bellevue, Berry Hill,
Bells Bend and Percy Priest Lake.

Those in the downtown Nashville area are in the path of this storm
and should prepare for lightning.

This includes the following highways...
 Interstate 40 between mile markers 197 and 219.
 Interstate 65 between mile markers 77 and 92.
 Interstate 24 between mile markers 41 and 55.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3630 8677 3612 8659 3604 8683 3605 8689
      3611 8699
TIME...MOT...LOC 2246Z 233DEG 17KT 3610 8687

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

10
Special weather statement, May 7, 5:49 PM CDT, 32 minutes before
Special Weather Statement
National Weather Service Nashville TN
549 PM CDT Sun May 7 2023

TNZ025>027-059-072315-
Williamson TN-Dickson TN-Davidson TN-Cheatham TN-
549 PM CDT Sun May 7 2023

...A strong thunderstorm will impact portions of southwestern
Davidson, eastern Dickson, northwestern Williamson and southeastern
Cheatham Counties through 615 PM CDT...

At 549 PM CDT, Doppler radar was tracking a strong thunderstorm near
White Bluff, or 10 miles northeast of Dickson, moving east at 15 mph.

HAZARD...Penny size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Ashland City, White Bluff, Kingston Springs, Pegram and Burns.

This includes Interstate 40 near mile marker 180, and between mile
markers 182 and 195.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3604 8732 3624 8730 3633 8696 3600 8698
TIME...MOT...LOC 2249Z 265DEG 15KT 3616 8721

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...<30 MPH

10
Special weather statement, May 7, 5:55 PM CDT, 26 minutes before
Special Weather Statement
National Weather Service Nashville TN
555 PM CDT Sun May 7 2023

TNZ008-009-029-072330-
Trousdale TN-Sumner TN-Macon TN-
555 PM CDT Sun May 7 2023

...A strong thunderstorm will impact portions of east central Sumner,
southwestern Macon and Trousdale Counties through 630 PM CDT...

At 554 PM CDT, Doppler radar was tracking a strong thunderstorm near
Gallatin, moving east at 30 mph.

HAZARD...Penny size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Gallatin, Lafayette, Hartsville, Westmoreland, Bethpage, Bledsoe
Creek State Park and Cottontown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3643 8601 3638 8603 3636 8607 3632 8611
      3633 8620 3634 8621 3634 8622 3635 8623
      3633 8625 3633 8627 3635 8627 3634 8630
      3634 8635 3636 8636 3634 8638 3635 8653
      3652 8654 3655 8607
TIME...MOT...LOC 2254Z 268DEG 26KT 3644 8642

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...<30 MPH

10
Special weather statement, May 7, 6:16 PM CDT, 5 minutes before
Special Weather Statement
National Weather Service Nashville TN
616 PM CDT Sun May 7 2023

TNZ062>064-078-072345-
Cannon TN-Rutherford TN-De Kalb TN-Warren TN-
616 PM CDT Sun May 7 2023

...A strong thunderstorm will impact portions of southwestern De
Kalb, east central Rutherford, northwestern Warren and Cannon
Counties through 645 PM CDT...

At 616 PM CDT, Doppler radar was tracking a strong thunderstorm over
Woodbury, moving east at 25 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Woodbury and Readyville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3573 8614 3588 8624 3600 8591 3591 8582
      3578 8577
TIME...MOT...LOC 2316Z 251DEG 22KT 3582 8612

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

10
Special weather statement, May 7, 6:21 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Nashville TN
621 PM CDT Sun May 7 2023

TNZ027-028-059-062-080000-
Rutherford TN-Williamson TN-Davidson TN-Wilson TN-
621 PM CDT Sun May 7 2023

...A strong thunderstorm will impact portions of southern Davidson,
northwestern Rutherford, northeastern Williamson and west central
Wilson Counties through 700 PM CDT...

At 620 PM CDT, Doppler radar was tracking a strong thunderstorm over
Bellevue, or 10 miles northwest of Franklin, moving east at 30 mph.

HAZARD...Pea size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Franklin, Nashville, Smyrna, Brentwood, La Vergne, Mount Juliet,
Nolensville, Forest Hills, Oak Hill, Belle Meade, Hermitage,
Bellevue, Antioch, Rural Hill, Berry Hill, Bells Bend, Natchez Trace
At Highway 96 and Percy Priest Lake.

This includes the following highways...
 Interstate 40 between mile markers 194 and 224.
 Interstate 65 between mile markers 68 and 85.
 Interstate 24 between mile markers 48 and 70.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3622 8653 3593 8652 3595 8700 3612 8701
      3616 8699
TIME...MOT...LOC 2320Z 266DEG 25KT 3606 8692

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...<30 MPH

10

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 2:18 PM CDTSpecial Weather StatementOHXMacon27 min
May 7, 2:42 PM CDTSpecial Weather StatementOHXFentress18 min
May 7, 3:12 PM CDTSpecial Weather StatementOHXMontgomery33 min
May 7, 3:40 PM CDTSpecial Weather StatementOHXPutnam35 min
May 7, 4:35 PM CDTSpecial Weather StatementOHXHouston25 min
May 7, 4:54 PM CDTSpecial Weather StatementOHXRobertson36 min
May 7, 5:11 PM CDTSpecial Weather StatementOHXHouston34 min
May 7, 5:15 PM CDTSevere Thunderstorm WarningOHXCheatham, Dickson, Houston, Montgomery30 min
May 7, 5:28 PM CDTSevere Thunderstorm WarningOHXHouston, Humphreys32 min
May 7, 5:47 PM CDTSpecial Weather StatementOHXDavidson28 min
May 7, 5:49 PM CDTSpecial Weather StatementOHXCheatham26 min
May 7, 5:51 PM CDTAreal Flood AdvisoryOHXDickson, Houston, Humphreys, Montgomery, Stewart3 hr
May 7, 5:51 PM CDTSevere Thunderstorm WarningOHXDickson, Houston, Humphreys24 min
May 7, 5:55 PM CDTSpecial Weather StatementOHXSumner, Trousdale35 min
May 7, 6:16 PM CDTSpecial Weather StatementOHXCannon29 min
May 7, 6:21 PM CDTAreal Flood AdvisoryOHXCheatham, Davidson, Dickson, Wilson4 hr
May 7, 6:38 PM CDTSevere Thunderstorm WarningOHXDavidson, Rutherford, Williamson, Wilson18 min
May 7, 6:43 PM CDTSpecial Weather StatementOHXDickson32 min
May 7, 6:54 PM CDTSpecial Weather StatementOHXWhite36 min

Nearby

Special Weather Statements in Tennessee, 2023Every special weather statement in 2023

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.