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Knoxville, IA Severe Weather Alertstar_ratehome

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Personal Weather Station
Location: Knoxville, IA
Elevation: 886ft
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Active Weather Alerts

Flood Watch
Issued: 3:30 PM Jun. 11, 2026 – National Weather Service
...FLOOD WATCH NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of central, south central, and southeast Iowa,
including the following counties, in central Iowa, Jasper and
Poweshiek. In south central Iowa, Appanoose, Clarke, Decatur,
Lucas, Mahaska, Marion, Monroe, Ringgold, Warren and Wayne. In
southeast Iowa, Davis and Wapello.

* WHEN...Until 4 PM CDT this afternoon.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
- More rain midday through this afternoon in addition to recent
rainfall from Wednesday through this morning may lead to
renewed, additional or more significant flooding.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

For the latest stream observations and forecasts refer to
weather.gov/desmoines/water.

&&

Tornado Watch
Issued: 12:34 PM Jun. 11, 2026 – National Weather Service
THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 311 UNTIL
3 PM CDT THIS AFTERNOON WHICH REPLACES A PORTION OF SEVERE
THUNDERSTORM WATCH 310. THE NEW WATCH IS VALID FOR THE FOLLOWING
AREAS

IN IOWA THE NEW WATCH INCLUDES 10 COUNTIES

IN CENTRAL IOWA

JASPER                POWESHIEK

IN SOUTH CENTRAL IOWA

APPANOOSE             LUCAS                 MAHASKA
MARION                MONROE                WAYNE

IN SOUTHEAST IOWA

DAVIS                 WAPELLO

THIS INCLUDES THE CITIES OF ALBIA, ALLERTON, BLOOMFIELD,
CENTERVILLE, CHARITON, CORYDON, GRINNELL, HUMESTON, KNOXVILLE,
NEWTON, OSKALOOSA, OTTUMWA, PELLA, AND SEYMOUR.

* 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.

PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES                        :  50%
PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES       :  30%
PROB OF 10 OR MORE SEVERE WIND EVENTS              :  90%
PROB OF 1 OR MORE WIND EVENTS >= 75 MPH            :  50%
PROB OF 10 OR MORE SEVERE HAIL EVENTS              :  40%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES          :  30%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : >95%
MEAN STORM MOTION /MPH/                            :  E 50

Flood Warning
Issued: 10:54 AM Jun. 11, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...A portion of south central Iowa, including the following
county, Marion.

* WHEN...Until 1000 PM CDT Thursday.

* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is occurring.

* ADDITIONAL DETAILS...
- At 551 AM CDT, Emergency management reported road closures
due to heavy rain. Flooding is ongoing. Between 1 and 3
inches of rain have fallen. Additional heavy rain this
morning will likely prolong or worsen the flooding,
especially along Cedar Creek.
- Some locations that will experience flooding include...
Knoxville, Melcher-Dallas, Bussey, Hamilton, Marysville and
Knoxville Municipal Airport.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

For the latest stream observations and forecasts refer to
weather.gov/desmoines/water.

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&



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