Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 159
NWS Storm Prediction Center Norman OK
340 PM CDT Sun May 3 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern Alabama
Middle Tennessee
* Effective this Sunday afternoon and evening from 340 PM until
800 PM CDT.
* Primary threats include...
Widespread damaging wind gusts to 70 mph likely
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...A long-lived and fast-moving line of severe thunderstorms
over western Tennessee will track eastward across the watch area
this afternoon and early evening. Damaging winds along the leading
edge of the storms is the primary threat.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 70 miles west southwest
of Nashville TN to 30 miles south southeast of Crossville TN. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 158...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28040.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 159 SEVERE TSTM AL TN 032040Z - 040100Z
AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
70WSW BNA/NASHVILLE TN/ - 30SSE CSV/CROSSVILLE TN/
..AVIATION COORDS.. 50NM N/S /61WSW BNA - 38NNE GQO/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28040.
LAT...LON 36618783 36418488 34688488 34878783
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 159 Status Report Messages:
STATUS REPORT #2 ON WW 159
VALID 032335Z - 040040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 WNW RMG
TO 25 SSW CSV TO 15 NW CSV TO 55 ESE BWG.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 523
..SQUITIERI..05/03/20
ATTN...WFO...HUN...OHX...MRX...
&&
STATUS REPORT FOR WS 159
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TNC007-035-049-065-121-133-137-143-153-040040-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BLEDSOE CUMBERLAND FENTRESS
HAMILTON MEIGS OVERTON
PICKETT RHEA SEQUATCHIE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 159
VALID 032250Z - 032340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ENE HSV
TO 55 WSW CSV TO 30 ENE BNA TO 25 SW BWG.
..SQUITIERI..05/03/20
ATTN...WFO...HUN...OHX...MRX...
&&
STATUS REPORT FOR WS 159
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC071-032340-
AL
. ALABAMA COUNTIES INCLUDED ARE
JACKSON
$$
TNC007-015-027-031-035-041-049-061-065-087-111-115-121-133-137-
141-143-153-159-165-169-175-177-185-032340-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BLEDSOE CANNON CLAY
COFFEE CUMBERLAND DE KALB
FENTRESS GRUNDY HAMILTON
JACKSON MACON MARION
MEIGS OVERTON PICKETT
PUTNAM RHEA SEQUATCHIE
SMITH SUMNER TROUSDALE
VAN BUREN WARREN WHITE
$$
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
|
Low (10%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
High (80%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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.