Alert archive / Tennessee / Special Weather Statements in 2021
Special Weather Statement, NWS Morristown, TN
NWS Morristown, TN issued this special weather statement at Aug 27, 2021, 7:21 PM EDT for Sullivan County, Tennessee. It was in force for 39 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 27, 2021, 7:21 PM EDT (23:21 UTC)
- Expired
- Aug 27, 2021, 8:00 PM EDT
- In force
- 39 min
- Issued by
- NWS Morristown, TN
- Hail
- 0.50 in
- Wind
- 40
County Sullivan County, TN
The radar
The Knoxville radar (KMRX), 98 km from the middle of the area, began a volume at 23:25 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 12:00Z, 11.4 hours before the alert went out and 223 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
- 592 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 998 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
788
WWUS84 KMRX 272321
SPSMRX
Special Weather Statement
National Weather Service Morristown TN
721 PM EDT Fri Aug 27 2021
TNZ017-044-046-280000-
Sullivan TN-Washington TN-Northwest Carter TN-
721 PM EDT Fri Aug 27 2021
...A strong thunderstorm will impact portions of western Sullivan and
northeastern Washington Counties through 800 PM EDT...
At 720 PM EDT, Doppler radar was tracking a strong thunderstorm near
Oak Grove, or near Johnson City, moving northwest at 5 mph.
HAZARD...Winds in excess of 40 mph and half inch 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...
Johnson City, Kingsport, Bristol Tn, Gray, Oak Grove, Spurgeon,
Colonial Heights, Central, Pine Crest and Bluff City.
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 3642 8220 3628 8235 3642 8261 3658 8239
TIME...MOT...LOC 2320Z 132DEG 6KT 3641 8235
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
$$
TDThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 3:11 AM EDT | Dense Fog Advisory | MRX | Polk | 7 hr |
| Aug 26, 8:08 PM EDT | Areal Flood Advisory | MRX | Russell, Scott | 3 hr |
| Aug 27, 6:15 PM EDT | Special Weather Statement | MRX | Washington | 45 min |
Nearby
Special Weather Statements in Tennessee, 2021Every 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.