Alert archive / Iowa / River Flood Warnings in 2010

River Flood Warning 61, NWS Des Moines, IA

May 12, 2010Decatur County, Iowa

NWS Des Moines, IA issued this river flood warning at May 12, 2010, 11:11 AM CDT for Decatur County, Iowa. It took effect at May 13, 2010, 8:00 AM CDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: May 12, 2010, 11:11 AM CDT (16:11 UTC)
In effect from: May 13, 2010, 8:00 AM CDT
Expired: May 13, 2010, 9:39 PM CDT
In force: 14 hr
Issued by: NWS Des Moines, IA
Flood severity: Minor

County Decatur County, IA

The radar

The Des Moines radar (KDMX), 111 km from the middle of the area, began a volume at 16:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Thompson River at Davis City (DVSI4). The gauge peaked at 9.52 ft at May 13, 2010, 12:00 PM CDT.

Action stage: 8 ft
Minor stage: 12 ft
Moderate stage: 20 ft
Major stage: 24 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06898000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this river flood warning went out at May 12, 7:20 AM CDT, 3 hours 51 minutes earlier.

Area forecast discussion, May 12, 7:20 AM CDT, 3 hours 51 minutes before

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Hazardous weather outlook, May 12, 4:28 AM CDT, 6 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
428 AM CDT WED MAY 12 2010

IAZ061-062-073>075-082>086-092>097-130930-
JASPER-POWESHIEK-WARREN-MARION-MAHASKA-UNION-CLARKE-LUCAS-MONROE-
WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
428 AM CDT WED MAY 12 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT FOR THE AREA. PLEASE REFER TO
THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR
FURTHER DETAILS.

STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON AND CONTINUE ACROSS THE AREA TONIGHT. LARGE HAIL AND
DAMAGING WINDS WILL BE THE MAIN THREAT WITH THE SEVERE WEATHER.
HOWEVER...AN ISOLATED TORNADO CANNOT BE RULED OUT ALONG THE
MISSOURI BORDER. IN ADDITION TO THE SEVERE WEATHER
POTENTIAL...AREAS OF FLASH FLOODING ARE POSSIBLE AS THE GROUND IS
STILL VERY SATURATED FROM THE RAIN EARLIER IN THE WEEK AND THE
RAINFALL AMOUNTS FORECAST FOR TONIGHT RANGE FROM 1 TO 2 INCHES
AND LOCALLY HIGHER AMOUNTS. RIVER FLOODING MAY ALSO POSE A PROBLEM
IN SOME AREAS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND
TONIGHT.

KLP

IAZ004>007-015>017-023>028-033>039-044>050-057>060-070>072-081-
130930-
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-CASS-ADAIR-
MADISON-ADAMS-
428 AM CDT WED MAY 12 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE LATE THIS
MORNING INTO TONIGHT. THE SEVERE THREAT IS LOW...BUT AN ISOLATED
STRONG THUNDERSTORM COULD PRODUCE HAIL AT TIMES. LOCALLY HEAVY
RAIN IS ALSO EXPECTED WERE UP TO AN INCH OF NEW RAINFALL MAY
ACCUMULATE BY LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAYBE NEEDED TODAY AND TONIGHT.

KLP

In the hours before

Special weather statement, May 12, 7:30 AM CDT, 3 hours 41 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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Special weather statement, May 12, 7:52 AM CDT, 3 hours 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
752 AM CDT WED MAY 12 2010

IAZ004>007-015>017-023>028-033>039-121400-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO
752 AM CDT WED MAY 12 2010

...STRONG WINDS POSSIBLE THIS MORNING OVER NORTHERN IOWA...

WINDS MAY GUST IN EXCESS OF 40 MPH AS SHOWERS AND A FEW
THUNDERSTORMS MOVE THROUGH THE AREA THIS MORNING. THE GUSTY WINDS
WILL LIKELY BE FROM THE EAST...AND INCREASE AROUND THE TIME THAT
THE PRECIPITATION ENDS.

WINDS GUSTED TO 44 MPH AT STORM LAKE AT 735 AM...AND SIMILAR
SPEEDS MAY OCCUR TOWARD MASON CITY BY 900 AM OR 1000 AM IF THE
GUSTY WINDS MAINTAIN THEIR SPEED AND STRENGTH.

SMALL

Special weather statement, May 12, 8:55 AM CDT, 2 hours 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
855 AM CDT WED MAY 12 2010

IAZ004>007-015>017-023>026-033>037-044>048-057>060-070>073-
081>083-092>094-121500-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-SAC-CALHOUN-WEBSTER-HAMILTON-
HARDIN-CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-
POLK-CASS-ADAIR-MADISON-WARREN-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-
DECATUR-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...SAC CITY...ROCKWELL CITY...
FORT DODGE...WEBSTER CITY...ELDORA...DENISON...CARROLL...
JEFFERSON...BOONE...AMES...AUDUBON...GUTHRIE CENTER...ADEL...
DES MOINES...ATLANTIC...GREENFIELD...WINTERSET...INDIANOLA...
CORNING...CRESTON...OSCEOLA...BEDFORD...MOUNT AYR...LEON
855 AM CDT WED MAY 12 2010

...GUSTY WINDS THIS MORNING OVER CENTRAL IOWA...

AN AREA OF DIMINISHING THUNDERSTORMS IS PRODUCING WIND GUSTS IN
EXCESS OF 35 MPH THIS MORNING ACROSS CENTRAL IOWA. GUSTS TO UP TO 40
MPH AT TIMES MAY OCCUR OVER THE NEXT SEVERAL HOURS AS THIS AREA OF
RAINFALL MOVES FROM WEST TO EAST ACROSS THE REGION WITH THE GUSTY
WINDS INCREASING IN SPEED AS THE RAINFALL ENDS IN YOUR AREA.

EXPECT THE GUSTY WINDS TO LAST ANYWHERE FROM ONE TO THREE HOURS
ONCE THE WINDS BEGIN. THE AREA OF RAINFALL WILL CONTINUE TO PASS
EAST OF THE REGION...AND END BY THE NOON HOUR. MORE RAIN AND
THUNDERSTORMS ARE EXPECTED TO DEVELOP BY LATE AFTERNOON AND
CONTINUE THIS EVENING.

REV

Special weather statement, May 12, 9:34 AM CDT, 1 hour 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
934 AM CDT WED MAY 12 2010

IAZ005>007-016-017-024>028-035>039-046>050-058>062-071>075-
082>086-093>097-121545-
KOSSUTH-WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-HUMBOLDT-WRIGHT-
FRANKLIN-BUTLER-BREMER-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
GREENE-BOONE-STORY-MARSHALL-TAMA-GUTHRIE-DALLAS-POLK-JASPER-
POWESHIEK-ADAIR-MADISON-WARREN-MARION-MAHASKA-UNION-CLARKE-LUCAS-
MONROE-WAPELLO-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...ALGONA...FOREST CITY...NORTHWOOD...
GARNER...MASON CITY...HUMBOLDT...CLARION...HAMPTON...ALLISON...
WAVERLY...FORT DODGE...WEBSTER CITY...ELDORA...GRUNDY CENTER...
WATERLOO...JEFFERSON...BOONE...AMES...MARSHALLTOWN...TOLEDO...
GUTHRIE CENTER...ADEL...DES MOINES...NEWTON...GRINNELL...
GREENFIELD...WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...
CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...MOUNT AYR...
LEON...CORYDON...CENTERVILLE...BLOOMFIELD
934 AM CDT WED MAY 12 2010

...GUSTY WINDS THIS MORNING OVER CENTRAL IOWA...

AN AREA OF DIMINISHING THUNDERSTORMS IS PRODUCING WIND GUSTS IN
EXCESS OF 35 MPH THIS MORNING ACROSS CENTRAL IOWA. GUSTS TO UP TO
35 MPH AT TIMES MAY OCCUR OVER THE NEXT SEVERAL HOURS AS THIS AREA
OF RAINFALL MOVES FROM WEST TO EAST ACROSS THE REGION WITH THE
GUSTY WINDS INCREASING IN SPEED AS THE RAINFALL ENDS IN YOUR AREA.

EXPECT THE GUSTY WINDS TO LAST ANYWHERE FROM ONE TO THREE HOURS
ONCE THE WINDS BEGIN. THE AREA OF RAINFALL WILL CONTINUE TO PASS
EAST OF THE REGION...AND END BY THE NOON HOUR. MORE RAIN AND THUNDERSTORMS
ARE EXPECTED TO DEVELOP BY LATE AFTERNOON AND CONTINUE THIS EVENING.

REV

Special weather statement, May 12, 10:31 AM CDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1031 AM CDT WED MAY 12 2010

IAZ048>050-060>062-073>075-084>086-095>097-121745-
STORY-MARSHALL-TAMA-POLK-JASPER-POWESHIEK-WARREN-MARION-MAHASKA-
LUCAS-MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...AMES...MARSHALLTOWN...TOLEDO...
DES MOINES...NEWTON...GRINNELL...INDIANOLA...KNOXVILLE...
OSKALOOSA...CHARITON...ALBIA...OTTUMWA...CORYDON...CENTERVILLE...
BLOOMFIELD
1031 AM CDT WED MAY 12 2010

...GUSTY WINDS THIS MORNING OVER CENTRAL AND SOUTH CENTRAL IOWA...

AN AREA OF DIMINISHING THUNDERSTORMS IS PRODUCING WIND GUSTS IN
EXCESS OF 35 MPH THIS MORNING ACROSS CENTRAL AND SOUTH CENTRAL IOWA.
GUSTS TO UP TO 35 MPH AT TIMES MAY OCCUR OVER THE NEXT COUPLE HOURS
AS THIS AREA OF RAINFALL MOVES FROM WEST TO EAST ACROSS THE REGION
WITH THE GUSTY WINDS INCREASING IN SPEED AS THE RAINFALL ENDS IN
YOUR AREA.

EXPECT THE GUSTY WINDS TO LAST ANYWHERE FROM ONE TO THREE HOURS
ONCE THE WINDS BEGIN. THE AREA OF RAINFALL WILL CONTINUE TO PASS
EAST OF THE REGION...AND END BY THE NOON HOUR. MORE RAIN AND THUNDERSTORMS
ARE EXPECTED TO DEVELOP BY LATE AFTERNOON AND CONTINUE THIS EVENING.

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 12, 4:04 AM CDT	Flash Flood Watch	DMX	Appanoose, Clarke, Davis, Decatur, Jasper, Lucas and 15 more	26 hr
May 12, 11:11 AM CDT	River Flood Warning	DMX	Mahaska, Marion	50 hr
May 12, 11:11 AM CDT	River Flood Warning	DMX	Appanoose, Wayne	42 hr
May 12, 1:38 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Guthrie	37 min
May 12, 2:05 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Hamilton, Hardin, Wright	40 min
May 12, 2:40 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene, Guthrie	50 min
May 12, 2:48 PM CDT	Areal Flood Advisory	DMX	Audubon, Greene, Guthrie	3 hr
May 12, 3:35 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton	40 min
May 12, 4:14 PM CDT	Areal Flood Advisory	DMX	Boone, Hamilton, Hardin, Webster	3 hr
May 12, 4:16 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Madison	44 min
May 12, 4:54 PM CDT	River Flood Warning	DMX	Madison, Warren	62 hr
May 12, 5:09 PM CDT	Areal Flood Advisory	DMX	Black Hawk, Bremer, Butler, Grundy	3 hr
May 12, 6:03 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk	28 min
May 12, 6:51 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Marshall, Tama	24 min

Nearby

River Flood Warnings in Iowa, 2010 Every river flood warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.