Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 31
NWS Storm Prediction Center Norman OK
1245 PM CDT Wed Mar 17 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Western Tennessee
* Effective this Wednesday afternoon and evening from 1245 PM
until 700 PM CDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...Generally linear clusters should persist east-northeast
across western Tennessee this afternoon. With a high shear, low CAPE
environment, a risk for damaging winds and a couple tornadoes may
develop.
The tornado watch area is approximately along and 45 statute miles
north and south of a line from 50 miles east of Jackson TN to 50
miles southwest of Dyersburg TN. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 26...WW 27...WW 28...WW
29...WW 30...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 24035.
...Grams
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 31
NWS Storm Prediction Center Norman OK
1245 PM CDT Wed Mar 17 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Western Tennessee
* Effective this Wednesday afternoon and evening from 1245 PM
until 700 PM CDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...Generally linear clusters should persist east-northeast
across western Tennessee this afternoon. With a high shear, low CAPE
environment, a risk for damaging winds and a couple tornadoes may
develop.
The tornado watch area is approximately along and 45 statute miles
north and south of a line from 50 miles east of Jackson TN to 50
miles southwest of Dyersburg TN. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 26...WW 27...WW 28...WW
29...WW 30...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 24035.
...Grams
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 31 TORNADO TN 171745Z - 180000Z
AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
50E MKL/JACKSON TN/ - 50SW DYR/DYERSBURG TN/
..AVIATION COORDS.. 40NM N/S /60NNW MSL - 26N MEM/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..65 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 24035.
LAT...LON 34958803 34849003 36149003 36258803
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 31 Status Report Messages:
STATUS REPORT #2 ON WW 31
VALID 172050Z - 172140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW MEM
TO 30 WSW MKL TO 25 E MKL TO 40 SSW CKV.
..BENTLEY..03/17/21
ATTN...WFO...MEG...
&&
STATUS REPORT FOR WT 31
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TNC047-069-071-109-157-172140-
TN
. TENNESSEE COUNTIES INCLUDED ARE
FAYETTE HARDEMAN HARDIN
MCNAIRY SHELBY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 31
VALID 171935Z - 172040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 208
..BENTLEY..03/17/21
ATTN...WFO...MEG...
&&
STATUS REPORT FOR WT 31
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TNC005-017-023-033-039-045-047-053-069-071-075-077-079-097-109-
113-157-167-183-172040-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BENTON CARROLL CHESTER
CROCKETT DECATUR DYER
FAYETTE GIBSON HARDEMAN
HARDIN HAYWOOD HENDERSON
HENRY LAUDERDALE MCNAIRY
MADISON SHELBY TIPTON
WEAKLEY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (40%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
@NWSSPC
