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.
SEL4
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 304
NWS Storm Prediction Center Norman OK
145 PM CDT Tue May 20 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central Illinois
West Central Indiana
* Effective this Tuesday afternoon and evening from 145 PM until
800 PM CDT.
* Primary threats include…
A few tornadoes possible
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…A few strong to severe thunderstorms will track
northeastward across the watch area. Large hail and a few tornadoes
appear to be the main threats.
The tornado watch area is approximately along and 65 statute miles
east and west of a line from 55 miles north northeast of Peoria IL
to 15 miles south southeast of Mattoon IL. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU4).
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 302…WW 303…
AVIATION…Tornadoes and 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 450. Mean
storm motion vector 24030.
…Hart
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW4
WW 304 TORNADO IL IN 201845Z – 210100Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
55NNE PIA/PEORIA IL/ – 15SSE MTO/MATTOON IL/
..AVIATION COORDS.. 55NM E/W /20NE BDF – 43SE AXC/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 24030.
LAT…LON 41408802 39258696 39258939 41409053
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 304 Status Report Message has not been issued yet.
Note: Click for Complete Product Text.Tornadoes
Probability of 2 or more tornadoes
Mod (50%)
Probability of 1 or more strong (EF2-EF5) tornadoes
Low (20%)
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 (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.