Alert archive / Tennessee / Wind Advisories in 2021

Wind Advisory 9, NWS Morristown, TN

March 30, 20218 counties in Tennessee

NWS Morristown, TN issued this wind advisory at Mar 30, 2021, 9:37 PM EDT for 8 counties in Tennessee. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Mar 30, 2021, 9:37 PM EDT (01:37 UTC)
Expired: Mar 31, 2021, 1:00 PM EDT
In force: 15 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 01:40 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, 1.6 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2152 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

598 
WWUS74 KMRX 310137
NPWMRX

URGENT - WEATHER MESSAGE
National Weather Service Morristown TN
937 PM EDT Tue Mar 30 2021

TNZ018-041-043-045-047-072-074-087-310945-
/O.NEW.KMRX.WI.Y.0009.210331T0137Z-210331T1700Z/
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
937 PM EDT Tue Mar 30 2021

...WIND ADVISORY IN EFFECT UNTIL 1 PM EDT WEDNESDAY...

* WHAT...South winds 15 to 25 mph with gusts up to 50 mph.

* WHERE...East Tennessee mountains and foothills.

* WHEN...Until 1 PM EDT Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

1 follow-up statement

580 
WWUS74 KMRX 310808 AAA
NPWMRX

URGENT - WEATHER MESSAGE...UPDATED
National Weather Service Morristown TN
408 AM EDT Wed Mar 31 2021

TNZ018-041-043-045-047-072-074-087-311700-
/O.CON.KMRX.WI.Y.0009.000000T0000Z-210331T1700Z/
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
408 AM EDT Wed Mar 31 2021

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS
AFTERNOON...

* WHAT...South winds 15 to 25 mph with gusts up to 50 mph.

* WHERE...East Tennessee mountains and foothills.

* WHEN...Until 1 PM EDT Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 31, 4:57 AM EDT	Areal Flood Advisory	MRX	Marion	2 hr
Mar 31, 5:40 AM EDT	Areal Flood Advisory	MRX	Bradley, Hamilton	3 hr
Mar 31, 7:57 AM EDT	Areal Flood Advisory	MRX	Marion	46 min
Mar 31, 8:42 AM EDT	Flash Flood Warning	MRX	Bradley, Hamilton, Marion, Sequatchie	5 hr
Mar 31, 8:52 AM EDT	Areal Flood Advisory	MRX	Blount, Jefferson, Loudon, Sevier	5 hr
Mar 31, 8:59 AM EDT	Areal Flood Advisory	MRX	Bledsoe, Rhea, Sequatchie	4 hr
Mar 31, 9:05 AM EDT	Areal Flood Advisory	MRX	Monroe	5 hr
Mar 31, 9:52 AM EDT	Areal Flood Advisory	MRX	Monroe, Polk	3 hr
Mar 31, 10:55 AM EDT	River Flood Warning	MRX	Bledsoe, Marion, Sequatchie	35 hr
Mar 31, 10:57 AM EDT	River Flood Warning	MRX	Hamilton	47 hr
Mar 31, 12:46 PM EDT	River Flood Warning	MRX	Cocke	22 hr
Mar 31, 1:31 PM EDT	Areal Flood Warning	MRX	Bradley, Hamilton, Marion, Sequatchie	6 hr
Mar 31, 2:04 PM EDT	River Flood Warning	MRX	Polk	14 hr
Mar 31, 3:38 PM EDT	Freeze Watch	MRX	Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 25 more	18 hr
Mar 31, 3:38 PM EDT	Freeze Warning	MRX	Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 25 more	17 hr
Mar 31, 3:38 PM EDT	Wind Advisory	MRX	Blount, Carter, Cocke, Greene, Johnson, Monroe and 3 more	12 hr

Nearby

Wind Advisories in Tennessee, 2021 Every wind advisory 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.