Watches, Warnings & Advisories



5 products issued by NWS for: Altoona IA

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Des Moines IA
344 AM CDT Tue May 21 2024

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-220845-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
344 AM CDT Tue May 21 2024

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

Thunderstorms from overnight are expected to linger through the
morning with damaging winds and flash flooding the primary
threats. Additional storms are expected to develop during the
afternoon with tornadoes, damaging winds, flash flooding, and
large hail all possible. The worst of the storms will be primarily
after 3pm. Winds could gust over 40mph at times as storms exit.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Additional thunderstorm chances return at times Friday and
through the weekend. The severe weather potential for these days
will be better determined in the coming days.

.SPOTTER INFORMATION STATEMENT...

Spotters will likely be needed at times today.

$$




Flood Watch

Flood Watch
National Weather Service Des Moines IA
1132 AM CDT Tue May 21 2024

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-220000-
/O.CON.KDMX.FA.A.0003.000000T0000Z-240522T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-
Including the cities of Grundy Center, Boone, Stuart, Conrad,
Denison, Aplington, Adair, Waverly, Pomeroy, Belmond,
Clarksville, Sac City, Odebolt, Wall Lake, Mason City, Forest
City, Northwood, Laurens, Perry, Winterset, Fort Dodge, Waukee,
Norwalk, Clarion, Gladbrook, Exira, Estherville, Lake Mills,
Wellsburg, Fontanelle, Bayard, Fonda, Eldora, Ames, Des Moines,
Rolfe, Iowa Falls, Toledo, Greenfield, Lake View, Indianola,
Schaller, Britt, Manly, Kanawha, Hampton, Reinbeck, Traer,
Gilmore City, Lake City, Panora, Allison, Clear Lake, Emmetsburg,
Dysart, Dike, Knoxville, Greene, Pocahontas, Shell Rock, Eagle
Grove, Guthrie Center, Newton, Cedar Falls, Humboldt, Pella,
Grinnell, Marshalltown, Earlham, Algona, Manson, Dumont, Casey,
Ackley, Oskaloosa, Carroll, Jefferson, Garner, Rockwell City,
Early, Tama, Atlantic, Parkersburg, Waterloo, Adel, Audubon,
Webster City, and Carlisle
1132 AM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* 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.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$



Flood Warning

Flood Warning
National Weather Service Des Moines IA
1116 AM CDT Tue May 21 2024

IAC013-017-023-069-075-083-099-127-153-157-169-171-220415-
/O.NEW.KDMX.FA.W.0003.240521T1616Z-240522T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Black Hawk IA-Bremer IA-Butler IA-Franklin IA-Grundy IA-Hardin IA-
Jasper IA-Marshall IA-Polk IA-Poweshiek IA-Story IA-Tama IA-
1116 AM CDT Tue May 21 2024

...FLOOD WARNING IN EFFECT UNTIL 1115 PM CDT THIS EVENING...

* WHAT...Flooding caused by excessive rainfall is occurring.

* 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.

* ADDITIONAL DETAILS...
  - At 1115 AM CDT, Emergency management reported continued
    flooding in the warned area. Flooding is already occurring.
    Between 5 and 6 inches of rain have fallen. Additional
    showers and thunderstorms are expected this afternoon which
    may lead to renewed or additional flooding.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 4280 9208 4230 9207 4230 9230 4151 9230
      4151 9326 4202 9349 4221 9350 4221 9346
      4247 9346 4247 9350 4282 9350


$$

Zogg




Flood Watch

Flood Watch
National Weather Service Des Moines IA
1114 AM CDT Tue May 21 2024

...The National Weather Service in Des Moines IA has issued a Flood
Watch for the following rivers in Iowa...

  Des Moines River at Fort Dodge affecting Webster County.

  Des Moines River near Stratford affecting Hamilton, Webster and
  Boone Counties.

  Des Moines River at Des Moines SE 6th St affecting Polk County.

  Raccoon River at Des Moines Fleur Dr affecting Polk County.

  North Raccoon River near Perry affecting Greene and Dallas
  Counties.

...The Flood Watch continues for the following rivers in Iowa...

  Black Hawk Creek at Hudson affecting Black Hawk county.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

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

River forecasts include observed precipitation plus forecast
precipitation over the next 24 hours.

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

&&

IAZ060-220015-
/O.NEW.KDMX.FL.A.0007.240523T1720Z-240526T1800Z/
/DEMI4.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1114 AM CDT Tue May 21 2024

...FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON TO EARLY SUNDAY
AFTERNOON...

* WHAT...Flooding is possible.

* WHERE...The Raccoon River at Des Moines Fleur Dr, or from Walnut
  Creek...to the Des Moines River.

* WHEN...From Thursday afternoon to early Sunday afternoon.

* IMPACTS...At 13.3 feet, SW 30th St is closed from George Flagg
  Parkway to Bell Ave. George Flagg Parkway is closed from SW 30th
  St to SW 28th St.

* ADDITIONAL DETAILS...
  - At 9:45 AM CDT Tuesday the stage was 6.2 feet.
  - Forecast...Flood stage may be reached early Thursday
    afternoon.
  - Flood stage is 12.0 feet.


&&

LAT...LON 4157 9361 4156 9368 4158 9367 4159 9362

$$



Flood Watch

Flood Watch
National Weather Service Des Moines IA
1114 AM CDT Tue May 21 2024

...The National Weather Service in Des Moines IA has issued a Flood
Watch for the following rivers in Iowa...

  Des Moines River at Fort Dodge affecting Webster County.

  Des Moines River near Stratford affecting Hamilton, Webster and
  Boone Counties.

  Des Moines River at Des Moines SE 6th St affecting Polk County.

  Raccoon River at Des Moines Fleur Dr affecting Polk County.

  North Raccoon River near Perry affecting Greene and Dallas
  Counties.

...The Flood Watch continues for the following rivers in Iowa...

  Black Hawk Creek at Hudson affecting Black Hawk county.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

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

River forecasts include observed precipitation plus forecast
precipitation over the next 24 hours.

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

&&

IAZ060-220015-
/O.NEW.KDMX.FL.A.0010.240524T0200Z-240525T0731Z/
/DESI4.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1114 AM CDT Tue May 21 2024

...FLOOD WATCH IN EFFECT FROM THURSDAY EVENING TO EARLY SATURDAY
MORNING...

* WHAT...Flooding is possible.

* WHERE...The Des Moines River at Des Moines SE 6th St, or from
  below the Center Street dam...to Runnells.

* WHEN...From Thursday evening to early Saturday morning.

* IMPACTS...At 24.0 feet, The bike trail is closed east of Water St.
  Water affects portions of other bike trails.

* ADDITIONAL DETAILS...
  - At 10:00 AM CDT Tuesday the stage was 20.7 feet.
  - Forecast...Flood stage may be reached late Thursday evening.
  - Flood stage is 24.0 feet.


&&

LAT...LON 4159 9356 4152 9333 4145 9333 4154 9356
      4159 9366

$$