Source: US National Oceanic and Atmospheric Administration
Note: The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.Note: Click for Watch Status Reports.
SEL0
URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 240
NWS Storm Prediction Center Norman OK
330 PM EDT Thu May 8 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Kentucky
Far Southwest North Carolina
Eastern Tennessee
Far Southwest Virginia
* Effective this Thursday afternoon and evening from 330 PM until
1100 PM EDT.
* Primary threats include…
Scattered large hail likely with isolated very large hail events
to 2 inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY…Thunderstorms will continue to intensify this afternoon
and evening while moving eastward and posing a threat for large hail
up to 1-2 inches in diameter. Scattered damaging winds with peak
gusts to 60-70 mph should also occur with any thunderstorm clusters
that can develop.
The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 85 miles east northeast
of London KY to 10 miles east southeast of Chattanooga TN. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).
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 238…WW 239…
AVIATION…A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27030.
…Gleason
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW0
WW 240 SEVERE TSTM KY NC TN VA 081930Z – 090300Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
85ENE LOZ/LONDON KY/ – 10ESE CHA/CHATTANOOGA TN/
..AVIATION COORDS.. 55NM E/W /71NNW HMV – 6E GQO/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27030.
LAT…LON 37548146 34978389 34978618 37548383
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 240 Status Report Message has not been issued yet.
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 ( 65 knots
Low (20%)
Hail
Probability of 10 or more severe hail events
High (70%)
Probability of 1 or more hailstones > 2 inches
Mod (30%)
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
High (90%)
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.