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.
SEL9
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 99
NWS Storm Prediction Center Norman OK
315 PM CDT Wed Apr 2 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central and Eastern Illinois
Western and Central Indiana
* Effective this Wednesday afternoon and evening from 315 PM
until 1000 PM CDT.
* Primary threats include…
Several tornadoes likely with a couple intense tornadoes
possible
Widespread damaging winds likely with isolated significant gusts
to 80 mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY…Severe storms are expected to develop and increase
initially across central/northeast Illinois late this afternoon, and
steadily progress east-northeastward into eastern Illinois and much
of western/central/northern Indiana by evening.
The tornado watch area is approximately along and 90 statute miles
north and south of a line from 30 miles west northwest of Decatur IL
to 45 miles north northeast of Indianapolis IN. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
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 97…WW 98…
AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23035.
…Guyer
SEL9
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 99
NWS Storm Prediction Center Norman OK
315 PM CDT Wed Apr 2 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central and Eastern Illinois
Western and Central Indiana
* Effective this Wednesday afternoon and evening from 315 PM
until 1000 PM CDT.
* Primary threats include…
Several tornadoes likely with a couple intense tornadoes
possible
Widespread damaging winds likely with isolated significant gusts
to 80 mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY…Severe storms are expected to develop and increase
initially across central/northeast Illinois late this afternoon, and
steadily progress east-northeastward into eastern Illinois and much
of western/central/northern Indiana by evening.
The tornado watch area is approximately along and 90 statute miles
north and south of a line from 30 miles west northwest of Decatur IL
to 45 miles north northeast of Indianapolis IN. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
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 97…WW 98…
AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23035.
…Guyer
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW9
WW 99 TORNADO IL IN 022015Z – 030300Z
AXIS..90 STATUTE MILES NORTH AND SOUTH OF LINE..
30WNW DEC/DECATUR IL/ – 45NNE IND/INDIANAPOLIS IN/
..AVIATION COORDS.. 80NM N/S /29WNW AXC – 36NNE IND/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 23035.
LAT…LON 41308939 41628595 39028595 38688939
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 99 Status Report Message has not been issued yet.
Note: Click for Complete Product Text.Tornadoes
Probability of 2 or more tornadoes
High (80%)
Probability of 1 or more strong (EF2-EF5) tornadoes
Mod (50%)
Wind
Probability of 10 or more severe wind events
High (90%)
Probability of 1 or more wind events > 65 knots
Mod (50%)
Hail
Probability of 10 or more severe hail events
Mod (50%)
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.