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.
SEL1
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 501
NWS Storm Prediction Center Norman OK
310 PM CDT Thu Jul 10 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Far Western Iowa
Northeast Nebraska
Extreme Southeast South Dakota
* Effective this Thursday afternoon and evening from 310 PM until
1000 PM CDT.
* Primary threats include…
A couple tornadoes possible
Scattered damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter likely
SUMMARY…Thunderstorm development is anticipated within the very
unstable airmass across central/northeast NE this afternoon.
Environmental conditions support initial supercells capable of all
severe hazards, including large to very large hail and tornadoes.
Upscale growth is anticipated after the initial cellular mode, with
the resultant convective line progressing quickly eastward. Strong
wind gusts are possible within this line, including gusts over 75
mph.
The tornado watch area is approximately along and 75 statute miles
north and south of a line from 5 miles north northwest of Broken Bow
NE to 10 miles east of Denison IA. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU1).
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.
&&
AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27035.
…Mosier
SEL1
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 501
NWS Storm Prediction Center Norman OK
310 PM CDT Thu Jul 10 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Far Western Iowa
Northeast Nebraska
Extreme Southeast South Dakota
* Effective this Thursday afternoon and evening from 310 PM until
1000 PM CDT.
* Primary threats include…
A couple tornadoes possible
Scattered damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter likely
SUMMARY…Thunderstorm development is anticipated within the very
unstable airmass across central/northeast NE this afternoon.
Environmental conditions support initial supercells capable of all
severe hazards, including large to very large hail and tornadoes.
Upscale growth is anticipated after the initial cellular mode, with
the resultant convective line progressing quickly eastward. Strong
wind gusts are possible within this line, including gusts over 75
mph.
The tornado watch area is approximately along and 75 statute miles
north and south of a line from 5 miles north northwest of Broken Bow
NE to 10 miles east of Denison IA. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU1).
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.
&&
AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27035.
…Mosier
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW1
WW 501 TORNADO IA NE SD 102010Z – 110300Z
AXIS..75 STATUTE MILES NORTH AND SOUTH OF LINE..
5NNW BBW/BROKEN BOW NE/ – 10E DNS/DENISON IA/
..AVIATION COORDS.. 65NM N/S /52ENE LBF – 55NNE OVR/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27035.
LAT…LON 42589967 43079519 40899519 40419967
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 501 Status Report Message has not been issued yet.
Note: Click for Complete Product Text.Tornadoes
Probability of 2 or more tornadoes
Mod (40%)
Probability of 1 or more strong (EF2-EF5) tornadoes
Low (20%)
Wind
Probability of 10 or more severe wind events
Mod (60%)
Probability of 1 or more wind events > 65 knots
Mod (60%)
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 (>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.