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.
SEL7
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 257
NWS Storm Prediction Center Norman OK
930 PM EDT Thu May 15 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Northern and West-Central Indiana
Far Southern Lower Michigan
Lake Michigan
* Effective this Thursday night and Friday morning from 930 PM
until 300 AM EDT.
* Primary threats include…
A few tornadoes and a couple intense tornadoes possible
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
SUMMARY…Thunderstorms will spread east-northeastward this evening
and overnight while posing a threat for a few tornadoes, scattered
severe/damaging winds with the ongoing cluster, and large hail with
any sustained supercells.
The tornado watch area is approximately along and 45 statute miles
east and west of a line from 30 miles east of Benton Harbor MI to 90
miles south of South Bend IN. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU7).
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 253…WW 255…WW 256…
AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24040.
…Gleason
SEL7
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 257
NWS Storm Prediction Center Norman OK
930 PM EDT Thu May 15 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Northern and West-Central Indiana
Far Southern Lower Michigan
Lake Michigan
* Effective this Thursday night and Friday morning from 930 PM
until 300 AM EDT.
* Primary threats include…
A few tornadoes and a couple intense tornadoes possible
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
SUMMARY…Thunderstorms will spread east-northeastward this evening
and overnight while posing a threat for a few tornadoes, scattered
severe/damaging winds with the ongoing cluster, and large hail with
any sustained supercells.
The tornado watch area is approximately along and 45 statute miles
east and west of a line from 30 miles east of Benton Harbor MI to 90
miles south of South Bend IN. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU7).
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 253…WW 255…WW 256…
AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24040.
…Gleason
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW7
WW 257 TORNADO IN MI LM 160130Z – 160700Z
AXIS..45 STATUTE MILES EAST AND WEST OF LINE..
30E BEH/BENTON HARBOR MI/ – 90S SBN/SOUTH BEND IN/
..AVIATION COORDS.. 40NM E/W /24SSE PMM – 35N IND/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24040.
LAT…LON 42138497 40398546 40398718 42138672
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 257 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
Mod (30%)
Wind
Probability of 10 or more severe wind events
Mod (60%)
Probability of 1 or more wind events > 65 knots
Mod (30%)
Hail
Probability of 10 or more severe hail events
Mod (50%)
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 (80%)
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.