Alert archive / Tennessee / High Wind Warnings in 2021
High Wind Warning 7, NWS Morristown, TN
NWS Morristown, TN issued this high wind warning at Apr 24, 2021, 1:09 AM EDT for 8 counties in Tennessee. It took effect at Apr 24, 2021, 11:00 AM EDT. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 24, 2021, 1:09 AM EDT (05:09 UTC)
- In effect from
- Apr 24, 2021, 11:00 AM EDT
- Expired
- Apr 24, 2021, 3:11 PM EDT
- In force
- 4 hr
- 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 05:08 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, 5.2 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
- 2459 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
576 WWUS74 KMRX 240509 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 109 AM EDT Sat Apr 24 2021 TNZ041-043-045-047-072-074-087-241500- /O.UPG.KMRX.HW.A.0006.210424T1200Z-210425T0000Z/ /O.NEW.KMRX.HW.W.0007.210424T1500Z-210425T0000Z/ Cocke Smoky Mountains-Southeast Greene-Unicoi-Southeast Carter- Blount Smoky Mountains-Sevier Smoky Mountains-Southeast Monroe- Including the cities of Hartford, Cedar Creek, Erwin, Unicoi, Limestone Cove, Hampton, Cades Cove, Elkmont, Gatlinburg, Citico, and Coker Creek 109 AM EDT Sat Apr 24 2021 ...HIGH WIND WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... * WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Portions of east Tennessee. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * 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. && $$ TNZ018-241500- /O.NEW.KMRX.HW.W.0007.210424T1500Z-210425T0000Z/ Johnson- Including the cities of Doeville, Mountain City, Neva, Shady Valley, Trade, and Laurel Bloomery 109 AM EDT Sat Apr 24 2021 ...HIGH WIND WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... * WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Johnson County. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$
2 follow-up statements
381 WWUS74 KMRX 241700 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 100 PM EDT Sat Apr 24 2021 TNZ018-041-043-045-047-072-074-087-250000- /O.CON.KMRX.HW.W.0007.000000T0000Z-210425T0000Z/ 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 100 PM EDT Sat Apr 24 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Mountains and Foothills of Far East Tennessee. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Damaging winds will blow down trees and power lines. Isolated 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. && $$
895 WWUS74 KMRX 241911 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 311 PM EDT Sat Apr 24 2021 TNZ018-041-043-045-047-072-074-087-242015- /O.CAN.KMRX.HW.W.0007.000000T0000Z-210425T0000Z/ Johnson-Cocke Smoky Mountains-Southeast Greene-Unicoi- Southeast Carter-Blount Smoky Mountains-Sevier Smoky Mountains- Southeast Monroe- 311 PM EDT Sat Apr 24 2021 ...HIGH WIND WARNING IS CANCELLED... Southerly winds of 15 to 25 mph with gusts up to 35 mph will remain possible through the evening hours. $$
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 7:01 PM EDT | Special Weather Statement | MRX | Sequatchie | 44 min |
Nearby
High Wind Warnings in Tennessee, 2021Every high wind warning 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.