At 604 PM CDT, severe thunderstorms were located along a line
extending from Bradford to 5 miles southeast of Hudson, moving
northeast at 40 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Waterloo, Cedar Falls, Waverly, Hudson, Clarksville, Shell Rock,
Dike, Uni-Dome And McLeod Center, Waterloo Municipal Airport,
Janesville, New Hartford, Plainfield, Morrison, Waverly Municipal
Airport, and George Wyth State Park.

A Tornado Watch remains in effect until 900 PM CDT for central, north
central and northeastern Iowa.

For your protection move to an interior room on the lowest floor of a
building.

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

* WHERE...Portions of central, north central, and northeast Iowa,
including the following counties, in central Iowa, Grundy, Hardin,
Jasper, Marshall, Polk, Poweshiek, Story and Tama. In north
central Iowa, Butler and Franklin. In northeast Iowa, Black Hawk
and Bremer.

* WHEN...Until 1115 PM CDT Tuesday.

* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is imminent or occurring. Numerous roads
remain closed due to flooding. Streams continue to rise due to
excess runoff from earlier rainfall. It will take several hours
for all the water from these storms to work through local drainage
systems in urban areas.

* ADDITIONAL DETAILS...
- At 425 PM CDT, Emergency management reported ongoing flooding
across the warned area. Several road closures, road washouts
and isolated landslides have been reported. Additional
rainfall of around 1 inch over the next few hours may lead to
renewed, additional or worse flooding.

For the latest river and 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.

TORNADO WATCH 277 REMAINS VALID UNTIL 9 PM CDT THIS EVENING FOR
THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 16 COUNTIES

IN CENTRAL IOWA

GRUNDY                JASPER                MARSHALL
POWESHIEK             TAMA

IN NORTH CENTRAL IOWA

BUTLER

IN NORTHEAST IOWA

BLACK HAWK            BREMER

IN SOUTH CENTRAL IOWA

APPANOOSE             LUCAS                 MAHASKA
MARION                MONROE                WAYNE

IN SOUTHEAST IOWA

DAVIS                 WAPELLO

THIS INCLUDES THE CITIES OF ALBIA, ALLERTON, ALLISON, APLINGTON,
BLOOMFIELD, CEDAR FALLS, CENTERVILLE, CHARITON, CLARKSVILLE,
CONRAD, CORYDON, DIKE, DUMONT, DYSART, GLADBROOK, GREENE,
GRINNELL, GRUNDY CENTER, HUMESTON, KNOXVILLE, MARSHALLTOWN,
NEWTON, OSKALOOSA, OTTUMWA, PARKERSBURG, PELLA, REINBECK,
SEYMOUR, SHELL ROCK, TAMA, TOLEDO, TRAER, WATERLOO, WAVERLY,
AND WELLSBURG.

...THIS IS A PARTICULARLY DANGEROUS SITUATION. STRONG LONG LIVED
TORNADOES MAY OCCUR...

* PRIMARY THREATS INCLUDE...

SEVERAL TORNADOES AND A FEW INTENSE TORNADOES LIKELY.
WIDESPREAD DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 90
MPH LIKELY.
SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
TO 4 INCHES IN DIAMETER POSSIBLE.

* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Much of central Iowa.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
- Rainfall of 3 to 5 inches with isolated higher amounts fell
over parts of central Iowa last night into this morning and
led to flash flooding in some areas. Additional round of
storms is expected this afternoon that may cause new flash
flooding or prolong or renew flash flooding in areas that
experienced flash flooding earlier.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

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