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.
SEL5
URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 65
NWS Storm Prediction Center Norman OK
310 PM PDT Wed Mar 26 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Oregon
Western Washington
* Effective this Wednesday afternoon and evening from 310 PM
until 900 PM PDT.
* Primary threats include…
Scattered large hail and isolated very large hail events to 2
inches in diameter likely
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY…Thunderstorms are expected to develop this afternoon over
parts of northwest Oregon and track north-northeastward across the
watch area through early evening. Large hail and damaging wind
gusts are possible in the strongest cells.
The severe thunderstorm watch area is approximately along and 45
statute miles east and west of a line from 45 miles south of Salem
OR to 5 miles north northwest of Seattle WA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU5).
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.
&&
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
22030.
…Hart
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW5
WW 65 SEVERE TSTM OR WA 262210Z – 270400Z
AXIS..45 STATUTE MILES EAST AND WEST OF LINE..
45S SLE/SALEM OR/ – 5NNW SEA/SEATTLE WA/
..AVIATION COORDS.. 40NM E/W /13NE EUG – 5NNW SEA/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 22030.
LAT…LON 44272391 47512331 47512138 44272209
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 65 Status Report Message has not been issued yet.
Note: Click for Complete Product Text.Tornadoes
Probability of 2 or more tornadoes
Low (20%)
Probability of 1 or more strong (EF2-EF5) tornadoes
Low (5%)
Wind
Probability of 10 or more severe wind events
Mod (40%)
Probability of 1 or more wind events > 65 knots
Low (20%)
Hail
Probability of 10 or more severe hail events
Mod (60%)
Probability of 1 or more hailstones > 2 inches
Mod (60%)
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.