Alert archive / Tennessee / Special Weather Statements in 2021
Special Weather Statement, NWS Nashville, TN
NWS Nashville, TN issued this special weather statement at May 3, 2021, 6:31 AM CDT for Maury County, Tennessee. It was in force for 29 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 3, 2021, 6:31 AM CDT (11:31 UTC)
- Expired
- May 3, 2021, 7:00 AM CDT
- In force
- 29 min
- Issued by
- NWS Nashville, TN
County Maury County, TN
The radar
The Nashville radar (KOHX), 111 km from the middle of the area, began a volume at 11:34 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, 11.5 hours before the alert went out and 98 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
- 2 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1344 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</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 3, 6:24 AM CDT, 7 minutes earlier.
Area forecast discussion, May 3, 6:24 AM CDT, 7 minutes before
Area Forecast Discussion National Weather Service Nashville TN 624 AM CDT Mon May 3 2021 .UPDATE... FOR 12Z AVIATION DISCUSSION. && .DISCUSSION... TODAY...Considerable activity is still ongoing across Middle Tennessee. Presently, an upper trough is working its way across the region that is providing the energy for these cells during the next several hours. However, look for the activity to diminish by late morning and through the afternoon as weak surface and upper ridging develops across Middle Tennessee and drier air fills in behind the departing shortwave. TONIGHT...Storm chances will increase as a surface boundary comes together to our immediate west. By 06Z, the NAM forecast sounding for BNA shows considerable instability (SBCAPE >2700 J/KG, Lifted Index of -9) and also moderate LLWS (0-3 km SRH of 238). Mid-level lapse rates >8.0 C/km can also be expected. However, one possible inhibitor could be an elevated inversion that may cap off some of these updrafts, especially after we lose the surface heating. The SPC does have nearly all of Middle Tennessee under a marginal or slight risk of severe storms through 12Z. TUESDAY...This is our best opportunity for severe storms. The slow-moving surface boundary will keep Middle Tennessee under a warm, moist and unstable air mass. The SPC has drawn an enhanced risk across areas generally south of I-40, with a slight risk over the remainder of the mid state. This environment appears able to support supercell development owing to pronounced wind shear, and steep lapse rates will definitely increase the potential for large hail. TUESDAY NIGHT...The severe potential will extend into the evening as the surface boundary finally inches its way across Middle Tennessee with the upper trough following shortly thereafter. Look for considerable drying after 06Z, with our rain and storm chances dropping off accordingly. WEDNESDAY THROUGH SUNDAY...Markedly cooler air will replace the pre-frontal air mass beginning on Wednesday. The remainder of the week looks to be rain-free, with the possible exception of a few showers mainly north of I-40 on Thursday afternoon as we get clipped by a fast-moving shortwave. Look for temperatures to rebound by Saturday. A low pressure system will bring our next chance of rain Saturday night and Sunday. && .AVIATION... 12Z TAF DISCUSSION. BNA/MQY/CKV/CSV...A large area of showers with a few imbedded thunderstorms is moving across Middle Tennessee this morning. Expect VSBY's to be periodically reduced with ceilings dropping to MVFR during showers. (CKV looks to be out of the rain area.) The activity will diminish by late morning with ceilings improving for a time this afternoon. Winds will also increase from the SSW as the showers diminish. Another round of storms will develop overnight. && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && DISCUSSION......08 AVIATION........08
Hazardous weather outlook, May 3, 5:00 AM CDT, 1 hour 31 minutes before
Hazardous Weather Outlook National Weather Service Nashville TN 500 AM CDT Mon May 3 2021 TNZ005>011-023>034-056>066-075-077>080-093>095-041000- 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- 500 AM CDT Mon May 3 2021 This Hazardous Weather Outlook is for Middle Tennessee. .DAY ONE...Today and tonight. Some severe storms are possible early this morning and again tonight across Middle Tennessee, mainly after midnight. Main threats are damaging winds and large hail. An isolated tornado cannot be ruled out. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Another round of showers and thunderstorms is expected on Tuesday in the late morning and afternoon hours. Some severe storms are possible with damaging winds and large hail the main threats. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines. 08
In the hours before
Special weather statement, May 3, 4:25 AM CDT, 2 hours 6 minutes before
Special Weather Statement National Weather Service Nashville TN 425 AM CDT Mon May 3 2021 TNZ058-060-094-095-031000- Lawrence TN-Lewis TN-Maury TN-Giles TN- 425 AM CDT Mon May 3 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LEWIS...NORTHERN LAWRENCE...SOUTHWESTERN MAURY AND NORTHWESTERN GILES COUNTIES UNTIL 500 AM CDT... At 424 AM CDT, Doppler radar was tracking a strong thunderstorm 9 miles west of Summertown, or 12 miles northwest of Lawrenceburg, moving northeast at 35 mph. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Mount Pleasant, Summertown, Henryville and Hampshire. LAT...LON 3541 8758 3566 8720 3543 8703 3530 8749 TIME...MOT...LOC 0924Z 239DEG 29KT 3538 8747 Shamburger
Special weather statement, May 3, 4:41 AM CDT, 1 hour 50 minutes before
Special Weather Statement
National Weather Service Nashville TN
441 AM CDT Mon May 3 2021
TNZ059-060-031015-
Williamson TN-Maury TN-
441 AM CDT Mon May 3 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MAURY AND
SOUTHEASTERN WILLIAMSON COUNTIES UNTIL 515 AM CDT...
At 440 AM CDT, Doppler radar was tracking a strong thunderstorm near
Spring Hill, moving northeast at 40 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Franklin, Columbia, Brentwood, Spring Hill, Nolensville, Thompson's
Station and Triune.
This includes the following highways...
Interstate 65 between mile markers 48 and 64.
Interstate 840 between mile markers 27 and 45.
LAT...LON 3564 8697 3572 8704 3600 8670 3597 8662
3591 8663 3587 8662 3585 8660 3584 8660
3583 8663 3582 8661 3581 8662 3581 8661
3579 8661 3579 8666 3577 8666 3577 8668
3575 8668 3575 8670 3574 8670
TIME...MOT...LOC 0940Z 235DEG 34KT 3571 8694
ShamburgerSpecial weather statement, May 3, 5:12 AM CDT, 1 hour 19 minutes before
Special Weather Statement National Weather Service Nashville TN 512 AM CDT Mon May 3 2021 TNZ027-028-062-031045- Rutherford TN-Davidson TN-Wilson TN- 512 AM CDT Mon May 3 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DAVIDSON... NORTHWESTERN RUTHERFORD AND CENTRAL WILSON COUNTIES UNTIL 545 AM CDT... At 512 AM CDT, Doppler radar was tracking a strong thunderstorm over La Vergne, or 12 miles northwest of Murfreesboro, moving northeast at 35 mph. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Lebanon, Smyrna, La Vergne, Mount Juliet, Watertown, Rural Hill, Belinda City, Cedars Of Lebanon State Park and Gladeville. This includes the following highways... Interstate 40 between mile markers 228 and 239. Interstate 24 between mile markers 61 and 70. Interstate 840 between mile markers 60 and 76. LAT...LON 3592 8656 3602 8667 3626 8637 3610 8615 TIME...MOT...LOC 1012Z 230DEG 32KT 3600 8655 Shamburger
Special weather statement, May 3, 6:31 AM CDT, 0 minutes before
Special Weather Statement National Weather Service Nashville TN 631 AM CDT Mon May 3 2021 TNZ058-060-094-095-031200- Lawrence TN-Lewis TN-Maury TN-Giles TN- 631 AM CDT Mon May 3 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LEWIS...NORTHEASTERN LAWRENCE...SOUTHWESTERN MAURY AND NORTHWESTERN GILES COUNTIES UNTIL 700 AM CDT... At 631 AM CDT, Doppler radar was tracking a strong thunderstorm near Summertown, or 11 miles southeast of Hohenwald, moving east at 45 mph. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Columbia, Mount Pleasant, Summertown and Henryville. LAT...LON 3532 8744 3550 8751 3565 8705 3542 8697 TIME...MOT...LOC 1131Z 250DEG 38KT 3545 8739 Shamburger
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 4:25 AM CDT | Special Weather Statement | OHX | Lewis | 35 min |
| May 3, 4:41 AM CDT | Special Weather Statement | OHX | Williamson | 34 min |
| May 3, 4:57 AM CDT | Tornado Warning | OHX | Maury | 23 min |
| May 3, 5:12 AM CDT | Special Weather Statement | OHX | Wilson | 33 min |
| May 3, 5:18 AM CDT | Tornado Warning | OHX | Marshall, Maury | 16 min |
| May 3, 5:52 AM CDT | Areal Flood Advisory | OHX | Lawrence, Lewis, Maury, Wayne | 2 hr |
| May 3, 6:27 AM CDT | Tornado Warning | OHX | Cannon, Rutherford | 9 min |
| May 3, 7:50 AM CDT | Flash Flood Warning | OHX | Hickman, Humphreys, Lewis, Maury, Perry, Williamson | 3 hr |
| May 3, 6:10 PM CDT | River Flood Advisory | OHX | Perry | 15 hr |
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.