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
Tornado Watch Number 505
NWS Storm Prediction Center Norman OK
1255 PM CDT Fri Jul 11 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
South-Central and Southeast Iowa
Far Northwest Illinois
Far Northern Missouri
* Effective this Friday afternoon and evening from 1255 PM until
800 PM CDT.
* Primary threats include…
A few tornadoes likely
Scattered damaging wind gusts to 70 mph likely
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY…Thunderstorm development is anticipated this afternoon in
close proximity to a surface low over far southwest IA, and
associated warm front that extends eastward across southern IA into
far northwest IL. Ample low-level moisture is supporting strong
buoyancy, and the potential for robust updrafts. Supercells capable
of all severe hazards, including tornadoes, are possible within this
environment.
The tornado watch area is approximately along and 40 statute miles
north and south of a line from 45 miles west northwest of Lamoni IA
to 30 miles northeast of Moline IL. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU5).
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 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24035.
…Mosier
SEL5
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 505
NWS Storm Prediction Center Norman OK
1255 PM CDT Fri Jul 11 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
South-Central and Southeast Iowa
Far Northwest Illinois
Far Northern Missouri
* Effective this Friday afternoon and evening from 1255 PM until
800 PM CDT.
* Primary threats include…
A few tornadoes likely
Scattered damaging wind gusts to 70 mph likely
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY…Thunderstorm development is anticipated this afternoon in
close proximity to a surface low over far southwest IA, and
associated warm front that extends eastward across southern IA into
far northwest IL. Ample low-level moisture is supporting strong
buoyancy, and the potential for robust updrafts. Supercells capable
of all severe hazards, including tornadoes, are possible within this
environment.
The tornado watch area is approximately along and 40 statute miles
north and south of a line from 45 miles west northwest of Lamoni IA
to 30 miles northeast of Moline IL. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU5).
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 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24035.
…Mosier
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW5
WW 505 TORNADO IA IL MO 111755Z – 120100Z
AXIS..40 STATUTE MILES NORTH AND SOUTH OF LINE..
45WNW LWD/LAMONI IA/ – 30NE MLI/MOLINE IL/
..AVIATION COORDS.. 35NM N/S /50ESE OVR – 42NNW BDF/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
LAT…LON 41449473 42349009 41189009 40289473
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 505 Status Report Message has not been issued yet.
Note: Click for Complete Product Text.Tornadoes
Probability of 2 or more tornadoes
Mod (60%)
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
Low (20%)
Hail
Probability of 10 or more severe hail events
Mod (40%)
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 (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.