Alert archive / Iowa / River Flood Warnings in 2010

River Flood Warning 220, NWS Des Moines, IA

August 9, 2010Mahaska County, Marion County, Iowa

NWS Des Moines, IA issued this river flood warning at Aug 9, 2010, 6:39 AM CDT for Mahaska County, Marion County, Iowa. It was in force for 39 hr.

The area

The counties it named.

The facts

Issued: Aug 9, 2010, 6:39 AM CDT (11:39 UTC)
Expired: Aug 10, 2010, 9:32 PM CDT
In force: 39 hr
Issued by: NWS Des Moines, IA
Flood severity: Minor

Counties Mahaska County, IA, Marion County, IA

The radar

The Des Moines radar (KDMX), 84 km from the middle of the area, began a volume at 11:38 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 Cedar Creek near Bussey (BSSI4). The gauge peaked at 25.01 ft at Aug 9, 2010, 10:00 PM CDT.

Action stage: 16 ft
Minor stage: 25 ft
Moderate stage: 30 ft
Major stage: 32 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05489000, 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 Aug 9, 4:38 AM CDT, 2 hours 1 minute earlier.

Area forecast discussion, Aug 9, 4:38 AM CDT, 2 hours 1 minute before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
438 AM CDT MON AUG 9 2010

.UPDATE AVIATION DISCUSSION 09/12Z...

.SHORT TERM /TODAY/...
AT LEAST A COUPLE OF SFC BOUNDARIES AND THIS VERY HUMID AIRMASS
WILL MEAN AN ACTIVE DAY NO DOUBT. CURRENT MCS THAT JUST WILL NOT
QUIT...FEEDING OFF LOW LEVEL JET AND UPPER LEVEL WAVE SHOULD
GRADUALLY DIMINISH OR PUSH OFF TO THE EAST. FLASH FLOOD THREAT
CONTINUES AND HAVE EXPANDED THE WATCH FARTHER EAST THROUGH MID
MORNING. MULTIPLE OUTFLOW BOUNDARIES AND THE MAIN SYNOPTIC
BOUNDARY LINGERING THROUGH CENTRAL IOWA WILL BE THE FOCUS FOR
ADDITIONAL DEVELOPMENT ESPECIALLY THIS AFTERNOON AS AIRMASS
BECOMES VERY UNSTABLE AGAIN. THERE IS THE RISK FOR SEVERE
WEATHER...WITH REALLY ANYTHING POSSIBLE...EVEN A TORNADO THREAT
GIVEN BOUNDARY INTERACTIONS. EXCESSIVE HEAT WARNING STILL IN
EFFECT FOR FAR SOUTHWESTERN COUNTIES AND ALSO ADDED A HEAT
ADVISORY FOR SOUTHERN COUNTIES. AM SOMEWHAT CONCERNED ABOUT THE
CLOUD COVER EARLY IN THE DAY POSSIBLY LIMITING THE WARMUP...BUT
ODDS ARE THE FARTHER SOUTH AND WEST YOU ARE...THE MORE LIKLEY TO
SEE MORE SUNSHINE. DEWPOINTS WILL ONCE AGAIN REBOUND INTO THE
UPPER 70S TO LOWER 80S...MAKING FOR THE OPPRESSIVE CONDITIONS.

.LONG TERM /TONIGHT THROUGH SUNDAY/...
EXPECT MORE OF THE SAME THROUGH AT LEAST WEDNESDAY. MAINLY NIGHT
AND MORNING THUNDERSTORM COMPLEXES RIDING UP AND OVER UPPER LEVEL
RIDGE AXIS. THE MOST LIKELY TRACK WILL ALLOW FOR THESE STORMS TO
AFFECT MAINLY THE NORTH AND EAST HALVES OF CENTRAL IOWA. SO FARTHER
SOUTHWEST...THE OPPRESSIVE HEAT WILL LIKELY CONTINUE. ADDITIONAL
HEAT WARNINGS OR ADVISORIES WILL LIKELY BE ISSUED LATER TODAY FOR
ADDITIONAL DAYS THIS WEEK. THE ONLY LIMITING FACTOR WILL BE
POTENTIAL FOR LINGERING MORNING RAIN OR DEBRIS CLOUDS THAT KEEP US
COOLER THAN PREDICTED. RIDGE AMPLIFIES OVER THE REGION THURSDAY
ENOUGH TO PROBABLY KEEP US DRY...BUT A MORE SIGNIFICANT UPPER
LEVEL TROUGH LOOKS POISED TO SWING THROUGH OUR REGION FRIDAY
NIGHT...WITH FORCING FOR MORE SHOWERS/STORMS ARRIVING AS EARLY AS
THURSDAY NIGHT.

&&

.AVIATION...09/12Z
STORMS WHICH PUSHED THROUGH CENTRAL IOWA OVER NIGHT WILL CONTINUE TO
PUSH EASTWARD...AFFECTING KALO AND KOTM EARLY IN THE PERIOD.
CEILINGS WILL REMAIN VFR THROUGH THE EARLY AFTERNOON...HOWEVER
ANOTHER ROUND OF STORMS IS POSSIBLE AFTER 18Z AS INSTABILITY
REDEVELOPS ACROSS THE REGION. HAVE PUSHED TIMING BACK A BIT FROM
PREVIOUS FORECAST TO ALLOW THE ATMOSPHERE TO RECOVER AND DUE TO
UNCERTAINTY. OVERNIGHT CONVECTION IS ONCE AGAIN POSSIBLE...AND HAVE
TRENDED TOWARDS THIS WITH THE TAFS. HAVE LEFT VSBYS LOWER THROUGH
12Z ALLOWING FOR FOG DEVELOPMENT.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
EXCESSIVE HEAT WARNING UNTIL 7 PM CDT THIS EVENING FOR ADAIR-
ADAMS-AUDUBON-CARROLL-CASS-CRAWFORD-GUTHRIE-RINGGOLD-SAC-TAYLOR-
UNION.

FLASH FLOOD WATCH UNTIL 9 AM CDT THIS MORNING FOR BOONE-CALHOUN-
HAMILTON-JASPER-MAHASKA-MARION-MARSHALL-POCAHONTAS-POLK-
POWESHIEK-STORY-TAMA-WARREN-WEBSTER.

HEAT ADVISORY FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING
FOR APPANOOSE-CLARKE-DAVIS-DECATUR-LUCAS-MADISON-MONROE-WAPELLO-
WAYNE.

&&

SHORT TERM...MOYER
LONG TERM...MOYER
AVIATION...AW

Hazardous weather outlook, Aug 9, 6:01 AM CDT, 38 minutes before

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In the hours before

Local storm report, Aug 9, 4:52 AM CDT, 1 hour 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
452 AM CDT MON AUG 09 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0432 AM     HEAVY RAIN       6 ENE STORY CITY        42.22N 93.49W
08/09/2010  M2.60 INCH       HAMILTON           IA   TRAINED SPOTTER

            OVERNIGHT RAINFALL TOTAL.

&&

AW

Local storm report, Aug 9, 5:03 AM CDT, 1 hour 36 minutes before

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Local storm report, Aug 9, 5:10 AM CDT, 1 hour 29 minutes before

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Local storm report, Aug 9, 5:21 AM CDT, 1 hour 18 minutes before

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Local storm report, Aug 9, 5:23 AM CDT, 1 hour 16 minutes before

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Local storm report, Aug 9, 6:31 AM CDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 7:43 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford, Sac	62 min
Aug 8, 8:13 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Greene, Pocahontas, Webster	62 min
Aug 8, 8:42 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Humboldt, Kossuth, Palo Alto, Pocahontas	63 min
Aug 8, 9:00 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene, Hamilton, Story, Webster	60 min
Aug 8, 9:36 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Guthrie	54 min
Aug 8, 9:38 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Wright	52 min
Aug 8, 9:48 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Jasper, Marshall, Polk, Story	57 min
Aug 8, 9:50 PM CDT	Flash Flood Warning	DMX	Emmet, Hancock, Kossuth, Palo Alto, Winnebago	2 hr
Aug 8, 10:02 PM CDT	Severe Thunderstorm Warning	DMX	Boone	13 min
Aug 8, 10:04 PM CDT	Flash Flood Warning	DMX	Carroll, Crawford, Greene	6 hr
Aug 8, 10:16 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin, Marshall, Story, Tama	44 min
Aug 8, 10:17 PM CDT	Flash Flood Warning	DMX	Emmet, Palo Alto	95 min
Aug 8, 10:29 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison	27 min
Aug 8, 10:35 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Crawford	55 min
Aug 8, 10:40 PM CDT	Flash Flood Warning	DMX	Dallas, Guthrie	6 hr
Aug 8, 10:41 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Franklin	64 min
Aug 8, 10:54 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Marshall, Tama	51 min
Aug 8, 11:10 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Greene, Guthrie	50 min
Aug 8, 11:12 PM CDT	Flash Flood Warning	DMX	Jasper, Polk	6 hr
Aug 9, 12:50 AM CDT	River Flood Warning	DMX	Polk	20 hr
Aug 9, 12:55 AM CDT	River Flood Warning	DMX	Dallas, Polk	13 hr
Aug 9, 1:21 AM CDT	Flash Flood Warning	DMX	Boone	6 hr
Aug 9, 1:42 AM CDT	Flash Flood Warning	DMX	Calhoun, Greene, Sac	4 hr
Aug 9, 1:58 AM CDT	River Flood Warning	DMX	Polk	19 hr
Aug 9, 1:59 AM CDT	Flash Flood Warning	DMX	Boone, Greene, Hamilton, Webster	5 hr
Aug 9, 2:35 AM CDT	Flash Flood Warning	DMX	Grundy, Hamilton, Hardin, Jasper, Marshall, Story	6 hr
Aug 9, 3:59 AM CDT	Flash Flood Warning	DMX	Jasper, Mahaska, Marion, Poweshiek	6 hr
Aug 9, 3:59 AM CDT	Heat Advisory	DMX	Appanoose, Clarke, Davis, Decatur, Lucas, Madison and 3 more	14 hr
Aug 9, 4:19 AM CDT	River Flood Warning	DMX	Jasper, Marion, Polk	9 days
Aug 9, 4:19 AM CDT	River Flood Warning	DMX	Mahaska	16 days
Aug 9, 4:19 AM CDT	River Flood Warning	DMX	Boone, Hamilton, Webster	11 hr
Aug 9, 4:19 AM CDT	River Flood Warning	DMX	Polk	9 days
Aug 9, 4:19 AM CDT	River Flood Warning	DMX	Dallas, Greene	8 days
Aug 9, 4:19 AM CDT	River Flood Warning	DMX	Polk	9 days
Aug 9, 4:19 AM CDT	River Flood Warning	DMX	Polk	9 days
Aug 9, 4:27 AM CDT	River Flood Warning	DMX	Polk	6 days
Aug 9, 4:53 AM CDT	Flash Flood Warning	DMX	Monroe, Wapello	6 hr
Aug 9, 4:54 AM CDT	Areal Flood Warning	DMX	Jasper, Polk	12 hr
Aug 9, 6:30 AM CDT	River Flood Warning	DMX	Polk, Story	5 days
Aug 9, 6:30 AM CDT	River Flood Warning	DMX	Story	14 hr
Aug 9, 8:44 AM CDT	Areal Flood Warning	DMX	Story	12 hr
Aug 9, 10:00 AM CDT	Areal Flood Warning	DMX	Marion	12 hr
Aug 9, 10:55 AM CDT	Areal Flood Warning	DMX	Monroe, Wapello	6 hr

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.