The community should prepare for an increased chance of Thunderstorms across Metro Nashville Davidson County Thursday afternoon and on Friday.
According to the Nashville Office of the National Weather Service (NWS) storms could be strong to severe. The weather includes threats for damaging wind gusts and large hail. The threats of tornadoes and flash flooding remain very low, but both are still possible.
For important safety information and weather updates sign up for the Metro Emergency Alert and Notification System (MEANS). It is free to download.
Monitor local news and weather channels or websites for severe weather alerts and warnings. Check the National Weather Service website for the latest information.
Our area is under a Level 2 out 5 Risk from the NWS Storm Prediction Center. A Level 2 is considered a "Slight Risk."
The Storm Prediction Center (SPC) uses a five-point scale, ranging from "Marginal" to "High" Risk, and an Enhanced Risk is the middle option.
A Slight Risk means there is a potential for scattered, severe thunderstorms. These storms are likely to be short-lived and not widespread. While intense storms with the potential for strong winds, large hail, or even isolated tornadoes are possible, they are not expected to be widespread or persistent.
It is important to take steps now to prepare for the weather and know where to go inside your home for the best protection. Office of Emergency Management (OEM) Field Response staff and ESU members have ensured operational readiness with vehicles and equipment and will be monitoring and responding to any storms related calls and checking on known flood prone areas over the next several days.
What to Expect:
- Periods of showers and thunderstorms are forecast to persist through Saturday.
- Rain chances have increased over the weekend.
- Strong to severe thunderstorms possible Thursday and Friday.
- Primary threats are damaging wind gusts and hail, and the tornado threat is low.
- The best chances are during the afternoon and evening.
Outdoor Tornado Warning Siren System
The Nashville Office of Emergency Management's Outdoor Tornado Warning Siren System vendor continues its annual preventative maintenance of all 113 Outdoor Tornado Warning Siren Sites. Crews are checking each site to make needed repairs.
This preventative maintenance is typically done during the summer months; however, OEM started immediately following several rounds of severe weather this month.
Crews have already started repairs to those siren sites and the repairs will continue at the same time as the preventative maintenance work.
During the maintenance period we will conduct growl tests to ensure operational issues are corrected and the siren site is working properly.
This process will take at least 2 weeks. Any growl tests will be cancelled if there is a severe weather forecast.
Remember, you may not hear the siren growl test inside of homes and buildings. The Outdoor Tornado Warning Siren system is to help those in outdoor areas be aware that a tornado warning has been issued for any portion of the county.
Nighttime Severe Weather Checklist
- Have multiple ways to receive weather alerts.
- Make sure your NOAA Weather Radio is plugged in and programmed to your area's station.
- Add new batteries.
- Charge your cell phone.
- Turn off "Do Not Disturb" to make sure you can receive alerts.
If you lose power make sure to follow important food safety guidelines.
Act During a Tornado Warning
When a tornado warning is issued for your area:
- Go to the lowest most interior part of your home immediately. Put as many walls between you and the outside as possible.
- Stay away from windows.
- Do not open windows.
- Use your arms to protect your head, and/or cover yourself with a mattress or sleeping bag, pillow.
- Know where very heavy objects are on the floor above and do not go under them as they may fall through on top of you.
In a Mobile Home
- Get out! Even if your home is tied down, it is not as safe as an underground shelter or permanent, sturdy building.
- Go to one of those shelters, or to a nearby permanent structure.
At School
- Follow the drill! Go to the interior hall or room in an orderly way as you are told.
- Crouch low, head down, and protect the back of your head with your arms.
- Stay away from windows and large open rooms like gyms and auditoriums.
In a House, a Dorm, or an Apartment with no Basement
- Avoid windows.
- Go to the lowest floor, small center room (like a bathroom or closet), under a stairwell, or in an interior hallway with no windows.
- Crouch as low as possible to the floor, facing down; and cover your head with your hands.
- A bathtub may offer a shell of partial protection. Even in an interior room, you should cover yourself with some sort of thick padding (mattress, blankets, etc.), to protect against falling debris in case the roof and ceiling fail.
In an Office Building, Hospital, Nursing Home or Skyscraper
- Go directly to an enclosed, windowless area in the center of the building - away from glass and on the lowest floor possible.
- Then, crouch down and cover your head. Interior stairwells are usually good places to take shelter, and if not crowded, allow you to get to a lower level quickly.
- Stay off the elevators; you could be trapped in them if the power is lost.
In the Open Outdoors
- If possible, seek shelter in a sturdy building.
- If not, lie flat and face-down on low ground, protecting your head with your arms.
- Get as far away from trees and cars as you can; they may become flying debris.
If You Are Driving or Away From Shelter When a Tornado Warning Is Issued
- Get out of the car immediately and take shelter in a nearby building.
- Never try to out drive a tornado.
- Do not get under an overpass or bridge for protection.
- If you are caught in your car by extreme winds or flying debris, park the car out of the traffic lanes as quickly as possible.
- Stay in the car with the seat belt on. Put your head down below the windows; cover your head with your hands and a blanket, coat, or other cushion if possible.
- If you can safely get noticeably lower than the level of the roadway, leave your car and lie in that area, covering your head with your hands.
In a Shopping Mall or Large Store
- Do not panic.
- Listen for emergency messages over the store intercom and watch for others.
- Move as quickly as possible to an interior bathroom, storage room or other small, enclosed area, away from windows. Look for tornado shelter signage.
In a Church or Theater
- Do not panic. If possible, move quickly but orderly to an interior bathroom or hallway, away from windows.
- Crouch face-down and protect your head with your arms. If there is no time to do that, get under the seats or pews, protecting your head with your arms or hands
- Weather forecasting is not a perfect, and some tornadoes do occur without warning.
It Is Important That You Stay Alert to the Sky and Know Some Things to Look and Listen For
- Strong, persistent rotation in the base of a cloud
- Whirling dust or debris on the ground under the cloud base
- Hail or heavy rain followed by either dead calm or a fast, intense wind shift. Many tornadoes are wrapped in heavy precipitation and can't be seen.
- Day or night - loud, continuous roar or rumble, which doesn't fade within a few seconds like thunder.
- Nighttime - smaller, bright, blue green to white flashes at ground level near a thunderstorms. This means power lines are being snapped by very strong winds, perhaps a tornado.
- Nighttime - Persistent lowering from the cloud base, illuminated or silhouetted by lightning, especially if it's on the ground or there is a blue-green-white power flash underneath.
Tornado Quick Facts
- Can strike quickly, with little to no warning.
- May appear almost transparent until dust and debris are picked up, or a cloud forms in the funnel.
- Tornadoes are most likely to occur between 3:00 p.m. and 9:00 p.m., but can occur at any time
- Southern states have peak tornado season from March through May, but as we have experienced here, they can happen any time of the year.
- The average forward speed of a tornado is 30 mph, but vary from stationary to 70 mph
- The average tornado moves southwest to northeast, but have been known to move in any direction.
Practice
- It is important to have a tornado plan in place at home, at the office, or anywhere you may frequent.
- Know where you can quickly take shelter, and practice at home and at the office at least yearly.
- When a tornado watch is issued, start thinking about those safe places and what you may need to have ready if things get bad.
Portable Generator Safety
- Prevent carbon monoxide poisoning from the toxic engine exhaust by operating your generator outside for proper ventilation.
- Never refuel your generator when it is running. Let it cool down first.
- Do not store fuel in a garage, basement or inside your home. Vapors can be released that can cause illness and are a potential fire hazard.
- Install a carbon monoxide detector inside your home to warn you in case of a gas leak.
- Never hook up a generator directly to your home's electrical service or wiring. This can cause back feeding and poses a serious risk to NES line workers.
- Avoid carbon monoxide poisoning. Only use generators and grills outdoors and away from windows. Never heat your home with a gas stovetop or oven.
NES Power Outage Center
NES Power Outage Tips
TDOT Smartway Map