Alert archive / Tennessee / High Wind Watches in 2021
High Wind Watch 7, NWS Morristown, TN
NWS Morristown, TN issued this high wind watch at Oct 27, 2021, 2:57 AM EDT for 8 counties in Tennessee. It took effect at Oct 28, 2021, 8:00 AM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Oct 27, 2021, 2:57 AM EDT (06:57 UTC)
- In effect from
- Oct 28, 2021, 8:00 AM EDT
- Expired
- Oct 27, 2021, 2:49 PM EDT
- In force
- Issued by
- NWS Morristown, TN
Counties Blount County, TN, Carter County, TN, Cocke County, TN, Greene County, TN, Johnson County, TN, Monroe County, TN, Sevier County, TN, Unicoi County, TN
The radar
The Knoxville radar (KMRX), 41 km from the middle of the area, began a volume at 06:58 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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 7.0 hours before the alert went out and 280 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1405 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
102 WWUS74 KMRX 270657 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 257 AM EDT Wed Oct 27 2021 TNZ018-041-043-045-047-072-074-087-271900- /O.NEW.KMRX.HW.A.0007.211028T1200Z-211029T0000Z/ Johnson-Cocke Smoky Mountains-Southeast Greene-Unicoi- Southeast Carter-Blount Smoky Mountains-Sevier Smoky Mountains- Southeast Monroe- Including the cities of Doeville, Mountain City, Neva, Shady Valley, Trade, Laurel Bloomery, Hartford, Cedar Creek, Erwin, Unicoi, Limestone Cove, Hampton, Cades Cove, Elkmont, Gatlinburg, Citico, and Coker Creek 257 AM EDT Wed Oct 27 2021 ...HIGH WIND WATCH IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Southeast winds 20 to 40 mph with gusts up to 60 mph possible. * WHERE...Portions of east Tennessee. * WHEN...From Thursday morning through Thursday evening. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$
1 follow-up statement
528 WWUS74 KMRX 271849 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 249 PM EDT Wed Oct 27 2021 TNZ018-041-043-045-047-072-074-087-280300- /O.UPG.KMRX.HW.A.0007.211028T1200Z-211029T0000Z/ /O.NEW.KMRX.HW.W.0008.211028T1200Z-211029T0000Z/ Johnson-Cocke Smoky Mountains-Southeast Greene-Unicoi- Southeast Carter-Blount Smoky Mountains-Sevier Smoky Mountains- Southeast Monroe- Including the cities of Doeville, Mountain City, Neva, Shady Valley, Trade, Laurel Bloomery, Hartford, Cedar Creek, Erwin, Unicoi, Limestone Cove, Hampton, Cades Cove, Elkmont, Gatlinburg, Citico, and Coker Creek 249 PM EDT Wed Oct 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 8 AM TO 8 PM EDT THURSDAY... * WHAT...Southeast winds 20 to 40 mph with gusts up to 60 mph expected. Isolated gusts up to 70 mph are possible. * WHERE...Portions of east Tennessee. * WHEN...From 8 AM to 8 PM EDT Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 2:49 PM EDT | High Wind Warning | MRX | Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more | 29 hr |
Nearby
High Wind Watches in Tennessee, 2021Every high wind watch 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.