Alert archive / Tennessee / Special Weather Statements in 2021
Special Weather Statement, NWS Nashville, TN
NWS Nashville, TN issued this special weather statement at Jul 31, 2021, 9:16 PM CDT for Davidson County, Tennessee. It was in force for 59 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
- Jul 31, 2021, 9:16 PM CDT (02:16 UTC)
- Expired
- Jul 31, 2021, 10:15 PM CDT
- In force
- 59 min
- Issued by
- NWS Nashville, TN
County Davidson County, TN
The radar
The Nashville radar (KOHX), 6 km from the middle of the area, began a volume at 02:17 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, 2.3 hours before the alert went out and 19 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.
- Mixed-layer CAPE
- 1106 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1447 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.3
The text
As transmitted.
828 WWUS84 KOHX 010216 SPSOHX Special Weather Statement National Weather Service Nashville TN 916 PM CDT Sat Jul 31 2021 TNZ007-008-026>028-010315- Robertson TN-Davidson TN-Wilson TN-Cheatham TN-Sumner TN- 916 PM CDT Sat Jul 31 2021 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DAVIDSON...SOUTHWESTERN SUMNER...NORTHERN WILSON...NORTHEASTERN CHEATHAM AND SOUTHERN ROBERTSON COUNTIES UNTIL 1015 PM CDT... At 916 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near White House to near Coopertown. Movement was southeast at 35 mph. Winds in excess of 40 mph will be possible with these storms. Locations impacted include... Gallatin, Lebanon, Springfield, Madison, Hendersonville, Mount Juliet, Goodlettsville, White House, Millersville, Greenbrier, Coopertown, Lakewood, Ridgetop, Hermitage, Belinda City, Old Hickory, Joelton, Rural Hill, Pleasant View and Green Hill. This includes the following highways... Interstate 40 between mile markers 212 and 245. Interstate 65 between mile markers 86 and 110. Interstate 24 between mile markers 25 and 52. Interstate 840 between mile markers 75 and 76. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with these storms, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3619 8612 3610 8670 3649 8712 3652 8668 TIME...MOT...LOC 0216Z 305DEG 29KT 3649 8674 3645 8704 $$ Shamburger
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 Jul 31, 8:41 PM CDT, 35 minutes earlier.
Area forecast discussion, Jul 31, 8:41 PM CDT, 35 minutes before
Area Forecast Discussion National Weather Service Nashville TN 841 PM CDT Sat Jul 31 2021 .UPDATE... FOR EVENING DISCUSSION. && .DISCUSSION... 2nd complex arriving a little ahead of schedule and is on the KY TN border. Storms have been sub severe, a report of dime size hail was recently received at white bridge TN. Overall, the forecast appears to be on track although maximum pops will be achieved slightly ahead of schedule. Dewpoints are in the mid 70s now and have been increasing in conjunction with the onset of convection. No changes to forecast at this time. at this point it looks like scattered strong storms for the mid state instead of severe. && .AVIATION... 00Z TAF DISCUSSION. Capped atmosphere beginning to give way to some added forcing in the northwest. Will include a vcts group for CKV initially. Otw, vcts will be utilized within the next few hours for the taf sites. An MCS will be pushing southeastward toward the taf sites later this evening. Shower and thunderstorms will become more widespread generally after 03Z. Cigs aob 3 kft will be commonplace with the increased precipitation coverage. Atmosphere will stabilize with just rain showers expected aft 10Z. The precipitation should end from north to south aft 18Z. && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && DISCUSSION......21 AVIATION........21
Hazardous weather outlook, Jul 31, 5:01 AM CDT, 16 hours 15 minutes before
Hazardous Weather Outlook National Weather Service Nashville TN 501 AM CDT Sat Jul 31 2021 TNZ005>011-023>034-056>066-075-077>080-093>095-011015- Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston- Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson- Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-Maury- Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee- Warren-Grundy-Van Buren-Wayne-Lawrence-Giles- 501 AM CDT Sat Jul 31 2021 This Hazardous Weather Outlook is for Middle Tennessee. .DAY ONE...Today and tonight. A Heat Advisory continues this afternoon for counties south of I-40 and west of I-65. Heat Index values around 106 are expected. Some strong to severe thunderstorms may be possible late Saturday afternoon through the early morning hours Sunday. Main concerns with any strong thunderstorm development will be gusty strong winds as well as heavy rainfall which could lead to localized flooding. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Some showers and a few thunderstorms in the morning Sunday may produce heavy rain and localized flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. 06
In the hours before
Special weather statement, Jul 31, 7:31 PM CDT, 1 hour 45 minutes before
Special Weather Statement National Weather Service Nashville TN 731 PM CDT Sat Jul 31 2021 TNZ007-008-026-027-010115- Robertson TN-Davidson TN-Cheatham TN-Sumner TN- 731 PM CDT Sat Jul 31 2021 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN DAVIDSON... SOUTHWESTERN SUMNER...NORTHEASTERN CHEATHAM AND CENTRAL ROBERTSON COUNTIES UNTIL 815 PM CDT... At 731 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Springfield to near Coopertown. Movement was east at 20 mph. Pea size hail and winds in excess of 40 mph will be possible with these storms. Locations impacted include... Springfield, Ashland City, Nashville, Madison, Hendersonville, Goodlettsville, White House, Millersville, Greenbrier, Coopertown, Ridgetop, Cross Plains, Joelton, Pleasant View, Cedar Hill, Whites Creek, Cottontown and Beaman Park. This includes downtown Nashville and Nissan Stadium. This includes the following highways... Interstate 65 between mile markers 85 and 114. Interstate 24 between mile markers 21 and 48. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with these storms. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3655 8644 3616 8677 3631 8715 3656 8700 TIME...MOT...LOC 0031Z 274DEG 16KT 3651 8682 3635 8702 Shamburger
Special weather statement, Jul 31, 7:41 PM CDT, 1 hour 35 minutes before
Special Weather Statement
National Weather Service Nashville TN
741 PM CDT Sat Jul 31 2021
TNZ006-007-010115-
Robertson TN-Montgomery TN-
741 PM CDT Sat Jul 31 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MONTGOMERY AND
WESTERN ROBERTSON COUNTIES UNTIL 815 PM CDT...
At 741 PM CDT, Doppler radar was tracking a strong thunderstorm near
Guthrie, or 13 miles east of Clarksville, moving east at 30 mph.
Pea size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Springfield, Coopertown, Orlinda, Adams and Cedar Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3660 8672 3638 8687 3657 8721 3664 8717
3664 8701 3665 8700
TIME...MOT...LOC 0041Z 291DEG 25KT 3659 8710
ShamburgerSpecial weather statement, Jul 31, 7:51 PM CDT, 1 hour 25 minutes before
Special Weather Statement
National Weather Service Nashville TN
751 PM CDT Sat Jul 31 2021
TNZ007-008-026-027-010130-
Robertson TN-Davidson TN-Cheatham TN-Sumner TN-
751 PM CDT Sat Jul 31 2021
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DAVIDSON...SOUTHWESTERN
SUMNER...NORTHERN CHEATHAM AND SOUTHWESTERN ROBERTSON COUNTIES UNTIL
830 PM CDT...
At 749 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Joelton to Chapmansboro. Movement was
southeast at 30 mph.
Winds in excess of 40 mph and frequent cloud to ground lightning are
expected with these storms.
Locations impacted include...
Ashland City, Nashville, Madison, Hendersonville, Goodlettsville,
Forest Hills, Oak Hill, Coopertown, Belle Meade, Lakewood, Old
Hickory, Joelton, Pleasant View, Berry Hill, Bells Bend, Whites Creek
and Beaman Park.
Those in downtown Nashville and at Nissan Stadium are in the path of
these storms and should prepare for IMMINENT DANGEROUS WEATHER
CONDITIONS.
This includes the following highways...
Interstate 40 between mile markers 201 and 215.
Interstate 65 between mile markers 75 and 97.
Interstate 24 between mile markers 21 and 53.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3629 8656 3604 8678 3628 8715 3631 8716
3631 8719 3634 8723 3645 8712
TIME...MOT...LOC 0049Z 298DEG 24KT 3629 8691 3637 8716
ShamburgerSpecial weather statement, Jul 31, 8:05 PM CDT, 1 hour 11 minutes before
Special Weather Statement National Weather Service Nashville TN 805 PM CDT Sat Jul 31 2021 TNZ008-009-028-029-010145- Wilson TN-Trousdale TN-Sumner TN-Macon TN- 805 PM CDT Sat Jul 31 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SUMNER...NORTH CENTRAL WILSON...SOUTHWESTERN MACON AND TROUSDALE COUNTIES UNTIL 845 PM CDT... At 805 PM CDT, Doppler radar was tracking a strong thunderstorm 5 miles north of Gallatin, moving east at 30 mph. Pea size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Gallatin, Hartsville, Westmoreland, Bledsoe Creek State Park, Cottontown and Bethpage. LAT...LON 3637 8656 3655 8652 3655 8607 3630 8613 TIME...MOT...LOC 0105Z 279DEG 26KT 3645 8645 Shamburger
Local storm report, Jul 31, 9:13 PM CDT, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
913 PM CDT SAT JUL 31 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0732 PM TSTM WND DMG 10 SSE CLARKSVILLE 36.43N 87.28W
07/31/2021 MONTGOMERY TN LAW ENFORCEMENT
A FEW TREES DOWN IN THE SOUTHEASTERN PORTION OF THE
COUNTY.
&&
EVENT NUMBER OHX2100565
21Special weather statement, Jul 31, 9:16 PM CDT, 0 minutes before
Special Weather Statement National Weather Service Nashville TN 916 PM CDT Sat Jul 31 2021 TNZ007-008-026>028-010315- Robertson TN-Davidson TN-Wilson TN-Cheatham TN-Sumner TN- 916 PM CDT Sat Jul 31 2021 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DAVIDSON...SOUTHWESTERN SUMNER...NORTHERN WILSON...NORTHEASTERN CHEATHAM AND SOUTHERN ROBERTSON COUNTIES UNTIL 1015 PM CDT... At 916 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near White House to near Coopertown. Movement was southeast at 35 mph. Winds in excess of 40 mph will be possible with these storms. Locations impacted include... Gallatin, Lebanon, Springfield, Madison, Hendersonville, Mount Juliet, Goodlettsville, White House, Millersville, Greenbrier, Coopertown, Lakewood, Ridgetop, Hermitage, Belinda City, Old Hickory, Joelton, Rural Hill, Pleasant View and Green Hill. This includes the following highways... Interstate 40 between mile markers 212 and 245. Interstate 65 between mile markers 86 and 110. Interstate 24 between mile markers 25 and 52. Interstate 840 between mile markers 75 and 76. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with these storms, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3619 8612 3610 8670 3649 8712 3652 8668 TIME...MOT...LOC 0216Z 305DEG 29KT 3649 8674 3645 8704 Shamburger
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 7:03 PM CDT | Severe Thunderstorm Warning | OHX | Robertson | 27 min |
| Jul 31, 7:07 PM CDT | Special Weather Statement | OHX | Robertson | 23 min |
| Jul 31, 7:27 PM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Dickson, Montgomery | 20 min |
| Jul 31, 7:31 PM CDT | Special Weather Statement | OHX | Davidson, Robertson | 44 min |
| Jul 31, 7:41 PM CDT | Special Weather Statement | OHX | Robertson | 34 min |
| Jul 31, 7:51 PM CDT | Special Weather Statement | OHX | Cheatham, Davidson | 39 min |
| Jul 31, 7:58 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Wilson | 47 min |
| Jul 31, 8:05 PM CDT | Special Weather Statement | OHX | Sumner, Trousdale | 40 min |
| Jul 31, 8:24 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Williamson | 36 min |
| Jul 31, 8:47 PM CDT | Areal Flood Advisory | OHX | Robertson | 4 hr |
| Jul 31, 8:57 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Rutherford, Williamson | 33 min |
| Jul 31, 9:10 PM CDT | Severe Thunderstorm Warning | OHX | Houston, Montgomery, Stewart | 50 min |
| Jul 31, 9:48 PM CDT | Special Weather Statement | OHX | Cheatham, Dickson | 27 min |
| Jul 31, 9:53 PM CDT | Areal Flood Advisory | OHX | Cheatham, Davidson, Robertson, Sumner | 3 hr |
| Jul 31, 9:57 PM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Dickson, Hickman, Montgomery, Williamson | 33 min |
| Jul 31, 10:19 PM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Davidson, Marshall, Maury, Williamson | 41 min |
| Jul 31, 10:24 PM CDT | Flash Flood Warning | OHX | Cheatham, Davidson, Williamson | 4 hr |
| Jul 31, 10:52 PM CDT | Severe Thunderstorm Warning | OHX | Bedford, Marshall, Maury, Rutherford, Williamson | 38 min |
| Jul 31, 10:55 PM CDT | Areal Flood Advisory | OHX | Davidson, Rutherford, Wilson | 16 min |
| Jul 31, 11:10 PM CDT | Flash Flood Warning | OHX | Davidson, Rutherford, Wilson | 3 hr |
| Jul 31, 11:24 PM CDT | Severe Thunderstorm Warning | OHX | Lewis, Perry, Wayne | 36 min |
| Jul 31, 11:26 PM CDT | Severe Thunderstorm Warning | OHX | Bedford, Cannon, Coffee, Marshall, Rutherford, Warren | 34 min |
| Jul 31, 11:36 PM CDT | River Flood Warning | OHX | Davidson | 3 hr |
| Jul 31, 11:41 PM CDT | River Flood Advisory | OHX | Davidson | 3 hr |
| Jul 31, 11:55 PM CDT | Severe Thunderstorm Warning | OHX | Bedford, Cannon, Coffee, Grundy, Rutherford, Van Buren and 1 more | 53 min |
| Aug 1, 2:40 AM CDT | Special Weather Statement | OHX | Wayne | 50 min |
| Aug 1, 3:43 AM CDT | Special Weather Statement | OHX | Wayne | 47 min |
| Aug 1, 4:29 AM CDT | Special Weather Statement | OHX | Lawrence, Wayne | 46 min |
| Aug 1, 6:47 AM CDT | Special Weather Statement | OHX | Giles, Lawrence | 43 min |
Nearby
Special Weather Statements in Tennessee, 2021Every special weather statement in 2021
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.