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 311
NWS Storm Prediction Center Norman OK
730 AM CDT Thu Jun 11 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern and Eastern Iowa
Northwest Illinois
Far northern Missouri
* Effective this Thursday morning and afternoon from 730 AM until
300 PM CDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes possible
Widespread damaging winds likely with isolated significant gusts
to 80 mph possible
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
SUMMARY...A well-organized and intense bowing linear system will
continue eastward this morning with the potential for widespread
damaging winds and potentially an increasing tornado risk, with the
intense convective line as well as any storms developing ahead of
it.
The tornado watch area is approximately along and 90 statute miles
north and south of a line from Knoxville IA to 40 miles east
southeast of Moline IL. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 310...
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 600. Mean
storm motion vector 27045.
...Guyer
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 311
NWS Storm Prediction Center Norman OK
730 AM CDT Thu Jun 11 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern and Eastern Iowa
Northwest Illinois
Far northern Missouri
* Effective this Thursday morning and afternoon from 730 AM until
300 PM CDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes possible
Widespread damaging winds likely with isolated significant gusts
to 80 mph possible
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
SUMMARY...A well-organized and intense bowing linear system will
continue eastward this morning with the potential for widespread
damaging winds and potentially an increasing tornado risk, with the
intense convective line as well as any storms developing ahead of
it.
The tornado watch area is approximately along and 90 statute miles
north and south of a line from Knoxville IA to 40 miles east
southeast of Moline IL. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 310...
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 600. Mean
storm motion vector 27045.
...Guyer
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1 WW 311 TORNADO IA IL MO 111230Z - 112000Z AXIS..90 STATUTE MILES NORTH AND SOUTH OF LINE.. OXV/KNOXVILLE IA/ - 40ESE MLI/MOLINE IL/ ..AVIATION COORDS.. 80NM N/S /25ESE DSM - 10WNW BDF/ HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..70 KNOTS. MAX TOPS TO 600. MEAN STORM MOTION VECTOR 27045. LAT...LON 42609312 42538979 39918979 40009312 THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS FOR WOU1.
Watch 311 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 |
High (90%) |
| Probability of 1 or more wind events > 65 knots |
Mod (50%) |
Hail
| Probability of 10 or more severe hail events |
Mod (40%) |
| 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 (>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.