Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Nashville, TN

August 9, 2021Cumberland County, Tennessee

NWS Nashville, TN issued this special weather statement at Aug 9, 2021, 5:45 PM CDT for Cumberland County, Tennessee. It was in force for 15 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 9, 2021, 5:45 PM CDT (22:45 UTC)
Expired: Aug 9, 2021, 6:00 PM CDT
In force: 15 min
Issued by: NWS Nashville, TN
Hail: 0.25 in
Wind: 30

County Cumberland County, TN

The radar

The Knoxville radar (KMRX), 133 km from the middle of the area, began a volume at 22:48 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

Nashville Metro, TN (KBNA), launched 12:00Z, 10.8 hours before the alert went out and 155 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: 788 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 892 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

265 
WWUS84 KOHX 092245
SPSOHX

Special Weather Statement
National Weather Service Nashville TN
545 PM CDT Mon Aug 9 2021
 
TNZ066-092300-
Cumberland TN-
545 PM CDT Mon Aug 9 2021

...A strong thunderstorm will impact portions of northeastern
Cumberland County through 600 PM CDT...

At 544 PM CDT, Doppler radar was tracking a strong thunderstorm near
Fairfield Glade, or 11 miles northeast of Crossville, moving east at
35 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Fairfield Glade and Slate Springs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3595 8495 3612 8502 3615 8494 3615 8493
      3616 8491 3613 8487 3608 8483 3610 8482
      3609 8480 3605 8479 3600 8473
TIME...MOT...LOC 2244Z 249DEG 31KT 3607 8489 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

$$

FB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 4:38 PM CDT	Special Weather Statement	OHX	Jackson	52 min
Aug 9, 4:48 PM CDT	Special Weather Statement	OHX	Fentress	12 min
Aug 9, 4:49 PM CDT	Special Weather Statement	OHX	Fentress	11 min
Aug 9, 4:57 PM CDT	Special Weather Statement	OHX	Smith	33 min
Aug 9, 5:08 PM CDT	Areal Flood Advisory	OHX	Fentress	112 min
Aug 9, 5:30 PM CDT	Special Weather Statement	OHX	Smith	45 min
Aug 9, 5:44 PM CDT	Severe Thunderstorm Warning	OHX	Jackson, Putnam, Smith	31 min
Aug 9, 5:50 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	25 min
Aug 9, 6:16 PM CDT	Severe Thunderstorm Warning	OHX	Jackson, Smith	29 min

Nearby

Special Weather Statements in Tennessee, 2021 Every special weather statement 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.