Alert archive / Tennessee / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 58, NWS Nashville, TN
NWS Nashville, TN issued this severe thunderstorm warning at May 27, 2018, 4:21 PM CDT for Montgomery County, Robertson County, Tennessee. It was in force for 24 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 27, 2018, 4:21 PM CDT (21:21 UTC)
- Expired
- May 27, 2018, 4:45 PM CDT
- In force
- 24 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Montgomery County, TN, Robertson County, TN
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 9.4 hours before the alert went out and 63 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
- 547 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 908 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 26, 6:24 PM CDT, 21 hours 57 minutes earlier.
Area forecast discussion, May 26, 6:24 PM CDT, 21 hours 57 minutes before
Area Forecast Discussion National Weather Service Nashville TN 624 PM CDT Sat May 26 2018 .UPDATE... FOR 00Z AVIATION DISCUSSION. && .DISCUSSION... Scattered thunderstorms popped up once again today and by this evening are expected to be confined mainly to southern and eastern parts of the Mid-State, before undergoing the typical diurnal dissipation. Scattered showers and thunderstorms will develop yet again on Sunday, especially over southern and eastern areas, with very similar conditions on Monday. It still looks like a band of subsidence, on the outer fringes of subtropical storm Alberto, will likely work its way northward into our area Sunday night into Monday night, as Alberto's center approaches the Gulf Coast, and should help keep convection limited to the scattered variety for our neck of the woods. However, expect showers to become numerous on Tuesday, as Alberto's main moisture field finally starts to push into the Tennessee Valley. A few thunderstorms will also be possible on Tuesday. Showers and isolated thunderstorms continue through Tuesday night and into Wednesday morning, but then should diminish from the southwest, as the remnants of Alberto pull north and east of Middle Tennessee. Even though Alberto will be nothing more than a memory by late week, our atmosphere will remain infected by sufficient moisture to keep scattered showers and thunderstorms running each day. There should be more sunshine, however, by late week, which will allow highs to push back into the middle 80s to around 90 degrees by next Friday and Saturday. The bulk of our rains this upcoming week are expected to occur on Tuesday and Wednesday, with the western two-thirds of Middle Tennessee forecast to see between one and two inches of rain, with locally higher amounts to around 3 inches possible. This will be in areas just east of Alberto's circulation center, that is forecast to track northward, very close to the Tennessee River, Tuesday night and Wednesday morning. An additional inch or so of rain could fall Thursday and Friday, meaning that some folks could see upwards of 4 inches during that four-day period. Localized flooding could become a problem at some point during that four-day period, and an ESF may be issued at some point over the next day or so. && .AVIATION... 00Z TAF DISCUSSION. Radar trends show CKV, BNA, and MQY are VFR, while CSV could see a possible shower or thunderstorm over the next few hours. All sites recorded some precipitation this afternoon so have MVFR VIS reduction late tonight into early tomorrow. BNA and MQT will need to be monitored for possible IFR VIS late as they saw the more significant rainfall. After 14Z expect VFR conditions with SCT dirunal CU and lesser chances for convection than today. && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && DISCUSSION......19 AVIATION........05
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:16 PM CDT | Special Weather Statement | OHX | Overton, Pickett | 44 min |
| May 26, 7:44 PM CDT | Areal Flood Advisory | OHX | Overton | 2 hr |
| May 27, 4:30 PM CDT | Special Weather Statement | OHX | Stewart | 30 min |
| May 27, 5:19 PM CDT | Special Weather Statement | OHX | Wilson | 26 min |
| May 27, 6:01 PM CDT | Areal Flood Advisory | OHX | Sumner | 119 min |
| May 27, 6:52 PM CDT | Areal Flood Advisory | OHX | Wilson | 113 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2018Every severe thunderstorm warning in 2018
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.