Alert archive / Iowa / River Flood Warnings in 2008

River Flood Warning 51, NWS Des Moines, IA

April 25, 2008Black Hawk County, Iowa

NWS Des Moines, IA issued this river flood warning at Apr 25, 2008, 7:27 AM CDT for Black Hawk County, Iowa. It took effect at Apr 25, 2008, 9:11 AM CDT. It was in force for 6 days.

The area

The counties it named.

The facts

Issued: Apr 25, 2008, 7:27 AM CDT (12:27 UTC)
In effect from: Apr 25, 2008, 9:11 AM CDT
Expired: May 1, 2008, 12:01 AM CDT
In force: 6 days
Issued by: NWS Des Moines, IA
Flood severity: Moderate

County Black Hawk County, IA

The radar

The Des Moines radar (KDMX), 143 km from the middle of the area, began a volume at 12:28 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 River at Cedar Falls (CEDI4). The gauge peaked at 93.93 ft at Apr 26, 2008, 4:00 PM CDT.

Action stage: 85 ft
Minor stage: 89 ft
Moderate stage: 92 ft
Major stage: 94 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05463050, 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 Apr 25, 6:44 AM CDT, 43 minutes earlier.

Area forecast discussion, Apr 25, 6:44 AM CDT, 43 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE DES MOINES IA
644 AM CDT FRI APR 25 2008

UPDATED AVIATION DISCUSSION

.SHORT TERM /TODAY/...
STRONG LOW PRESSURE SYSTEM BOTH AT THE SURFACE AND ALOFT TO MOVE
OVER THE AREA TODAY. AS OF 2 AM...THE SFC LOW WAS IN CENTRAL
KANSAS AND POISED TO MOVE NORTHEAST ALONG FRONTAL BOUNDARY
EXTENDING NORTHEAST THROUGH WESTERN IOWA AND SOUTHEAST MINNESOTA.
WARM AND MOIST AIRMASS AHEAD OF THE LOW ACROSS MUCH OF CENTRAL AND
EASTERN IOWA...BUT ALREADY COOLING OFF TO THE NW WITH KEST ALREADY
DOWN TO 43 DEGREES AND A NORTH WIND GUSTING TO 35 MPH. EARLIER
CONVECTIVE COMPLEX EXITING NORTHEAST IOWA...BUT A LARGER MCS MOVING
INTO SW IOWA WITH MANY WARNINGS BEING ISSUED UPSTREAM. SVR TSTM
THREAT WILL CONTINUE EARLY THIS MORNING ACROSS SOUTHERN IA AS MUCAPES
REMAIN AROUND 1000 J/KG AND BULK SHEAR SUPPORTIVE OF STORM
ORGANIZATION. SFC LOW WILL MOVE RAPIDLY INTO NRN IA BY MIDDAY WITH
COLD FRONT SWEEPING EAST...AND LIKELY OUT OF CENTRAL IA BY MID
AFTERNOON. THUNDERSTORMS WILL CONTINUE AHEAD OF SFC LOW AND COLD
FRONT...BUT DRY SLOT WILL MOVE RAPIDLY UP THROUGH CENTRAL IA DURING
THE MORNING. DEFORMATION ZONE RAIN WILL OCCUR OVER NW IA WHERE
TEMPERATURES WILL BE FALLING INTO THE 30S. WILL HAVE TO WATCH THIS
AREA CAREFULLY FOR THE POTENTIAL OF LIGHT SNOW ACCUMULATIONS.
OTHERWISE...TEMPERATURES WILL FALL DRAMATICALLY BEHIND THE COLD
FRONT WITH SOME PLACES IN CENTRAL IA SOME 20 DEGREES COLDER AT
SUPPER TIME THAN AT BREAKFAST TODAY. WINDS WILL ALSO PICK UP BEHIND
THE FRONT AND COULD BE FLIRTING WITH ADVISORY CRITERIA. FLASH FLOOD
THREAT STILL THERE AS LONG AS THUNDERSTORMS IN THE FORECAST...THOUGH
THE NW EXTENT OF THE WATCH MAY NOT HAVE THE BEST CHANCES FOR
REALIZING FLOODING.

.LONG TERM /TONIGHT-THURSDAY/...
WILL DEAL WITH SOME WRAP AROUND PRECIP ACROSS THE NORTH EARLY
TONIGHT...WHICH WILL LIKELY FALL AS SNOW. BUT...WITH ONLY LIGHT
QPF EXPECTED...ANY SNOW ACCUMULATIONS SHOULD BE LIGHT. TREND IN
THE FORECAST WAS TO COOL TEMPS A BIT MORE OVER THE WEEKEND AND
INCREASE POPS FOR SATURDAY NIGHT. MODELS CONTINUE TO COME FARTHER
SOUTH WITH UPPER LEVEL SHORTWAVE AND A BIT STRONGER ON THE SFC
CYCLONGENESIS SOMEWHERE IN THE VICINTY OF NORTHERN MISSOURI. MODEL
CROSS SECTIONS PRETTY EMPHATIC WITH STRONG LIFT OVER CENTAL AND
SOUTHERN IA IN DEF ZONE. THIS HAS ME A BIT WORRIED WITH MUCH OF
THE SOUNDINGS BELOW ZERO UNTIL THE VERY LOWEST 25 TO 50 MB. WILL
CONTINUE TO ERR ON THE SIDE OF CLIMATOLOGY AND KEEP PRECIP MAINLY
LIQUID. BUT THIS DOES BEAR WATCHING. SUNDAY WILL BE THE COOLEST DAY
IN THE WAKE OF THIS SYSTEM WITH TEMPS 15 TO 20 DEGREES BELOW
NORMAL...AND THE POTENTIAL FOR SCATTERED SHOWERS...AND POSSIBLY SOME
THUNDER AND GRAUPEL. MADE NO CHANGES AND DID NOT HAVE A CHANCE TO
LOOK AT MUCH BEYOND MONDAY.

&&

.AVIATION...25/12Z
SHOWERS AND THUNDERSTORMS ALONG WITH IFR CONDITIONS WILL CONTINUE
FOR THE EASTERN SITES THROUGH MID TO LATE MORNING. PRECIP ENDS BY
17Z...BUT LOW CEILINGS AND GUSTY W TO NW WINDS WILL AFFECT TAF SITES
THROUGH EARLY TONIGHT. CEILINGS WILL LIKELY BECOME MVFR FOR NORTHERN
SITES...WHILE SOUTHERN SITES GRADUALLY CLEAR OUT AFTER 06Z.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL NOON CDT TODAY FOR ADAIR-ADAMS-APPANOOSE-
AUDUBON-BLACK HAWK-BOONE-BREMER-BUTLER-CALHOUN-CARROLL-CASS-
CERRO GORDO-CLARKE-CRAWFORD-DALLAS-DAVIS-DECATUR-EMMET-FRANKLIN-
GREENE-GRUNDY-GUTHRIE-HAMILTON-HANCOCK-HARDIN-HUMBOLDT-JASPER-
KOSSUTH-LUCAS-MADISON-MAHASKA-MARION-MARSHALL-MONROE-PALO ALTO-
POCAHONTAS-POLK-POWESHIEK-RINGGOLD-SAC-STORY-TAMA-TAYLOR-UNION-
WAPELLO-WARREN-WAYNE-WEBSTER-WINNEBAGO-WORTH-WRIGHT.

&&

PUBLIC...MOYER
AVIATION...MOYER

Hazardous weather outlook, Apr 25, 5:56 AM CDT, 1 hour 31 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
556 AM CDT FRI APR 25 2008

IAZ004>007-015>017-023>027-033>037-044>048-057>060-070>073-
081>083-092>094-261100-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-SAC-CALHOUN-WEBSTER-
HAMILTON-HARDIN-CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-
GUTHRIE-DALLAS-POLK-CASS-ADAIR-MADISON-WARREN-ADAMS-UNION-CLARKE-
TAYLOR-RINGGOLD-DECATUR-
556 AM CDT FRI APR 25 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE POSSIBLE THIS MORNING. AN ISOLATED
SEVERE THUNDERSTORM PRODUCING HAIL UP TO THE SIZE OF A PENNY IS
POSSIBLE.

A FLASH FLOOD WATCH IS IN EFFECT FOR THE AREA DUE TO HEAVY RAIN
FROM THUNDERSTORMS FALLING ON ALREADY SATURATED GROUND CONDITIONS.
PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A CHANCE OF THUNDERSTORMS WILL RETURN NEXT WEDNESDAY AND THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

IAZ028-038-039-049-050-061-062-074-075-084>086-095>097-261100-
BREMER-GRUNDY-BLACK HAWK-MARSHALL-TAMA-JASPER-POWESHIEK-MARION-
MAHASKA-LUCAS-MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
556 AM CDT FRI APR 25 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

NUMEROUS THUNDERSTORMS WILL OCCUR THIS MORNING. THERE IS A SLIGHT
RISK OF SEVERE THUNDERSTORMS WITH LARGE HAIL THE MAIN THREAT.
HOWEVER...DAMAGING WINDS AND AN ISOLATED TORNADO CANNOT BE RULED
OUT.

A FLASH FLOOD WATCH IS IN EFFECT FOR THE AREA DUE TO HEAVY RAIN
FROM THUNDERSTORMS FALLING ON ALREADY SATURATED GROUND CONDITIONS.
PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A CHANCE OF THUNDERSTORMS WILL RETURN NEXT WEDNESDAY AND THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS MORNING.

MOYER

In the hours before

Local storm report, Apr 25, 4:08 AM CDT, 3 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
408 AM CDT FRI APR 25 2008

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

0356 AM     HAIL             4 S NORWALK             41.45N 93.67W
04/25/2008  E1.00 INCH       WARREN             IA   EMERGENCY MNGR

&&

BMOYER

Local storm report, Apr 25, 4:21 AM CDT, 3 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
421 AM CDT FRI APR 25 2008

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

0417 AM     HAIL             11 SSE INDIANOLA        41.20N 93.50W
04/25/2008  E1.00 INCH       WARREN             IA   FIRE DEPT/RESCUE

&&

BMOYER

Local storm report, Apr 25, 4:25 AM CDT, 3 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
425 AM CDT FRI APR 25 2008

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

0411 AM     HAIL             5 ESE DES MOINES        41.55N 93.53W
04/25/2008  E0.88 INCH       POLK               IA   UNKNOWN

            PUBLIC REPORT THROUGH ESPOTTER

&&

BMOYER

Local storm report, Apr 25, 4:51 AM CDT, 2 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
451 AM CDT FRI APR 25 2008

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

0427 AM     FLASH FLOOD      CEDAR FALLS             42.52N 92.45W
04/25/2008                   BLACK HAWK         IA   EMERGENCY MNGR

            SANDBAGGING OPERATIONS AROUND FIRE STATION DUE TO DRY RUN
            CREEK OVERRUNNING BANKS.

&&

MRUSSELL

Local storm report, Apr 25, 6:17 AM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
617 AM CDT FRI APR 25 2008

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

0614 AM     FLASH FLOOD      1 W REINBECK            42.32N 92.62W
04/25/2008                   GRUNDY             IA   LAW ENFORCEMENT

            6 INCHES OF WATER OVER THE ROAD DUE TO FLASH FLOODING OF
            BLACK HAWK CREEK.

&&

MRUSSELL

Local storm report, Apr 25, 6:38 AM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
638 AM CDT FRI APR 25 2008

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

0130 AM     FLASH FLOOD      1 WNW GLADBROOK         42.19N 92.73W
04/25/2008                   TAMA               IA   LAW ENFORCEMENT

            WATER OVER 170TH STREET IN THE GLADBROOK AREA.

&&

MRUSSELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 7:35 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene, Guthrie	55 min
Apr 24, 8:16 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Hamilton, Hardin, Wright	44 min
Apr 24, 8:29 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene	35 min
Apr 24, 8:35 PM CDT	Tornado Warning	DMX	Franklin, Hamilton, Hardin, Wright	40 min
Apr 24, 8:47 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene	18 min
Apr 24, 9:07 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin, Grundy, Hardin	38 min
Apr 24, 9:17 PM CDT	Areal Flood Advisory	DMX	Bremer, Butler, Franklin	3 hr
Apr 24, 10:56 PM CDT	Areal Flood Advisory	DMX	Black Hawk, Grundy	3 hr
Apr 25, 1:59 AM CDT	Areal Flood Advisory	DMX	Black Hawk, Grundy	3 hr
Apr 25, 2:16 AM CDT	River Flood Warning	DMX	Boone, Webster	5 days
Apr 25, 2:18 AM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	42 min
Apr 25, 2:23 AM CDT	River Flood Warning	DMX	Cerro Gordo, Floyd, Worth	32 hr
Apr 25, 2:32 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass	43 min
Apr 25, 2:38 AM CDT	River Flood Warning	DMX	Black Hawk, Butler	65 hr
Apr 25, 2:41 AM CDT	River Flood Warning	DMX	Black Hawk	5 days
Apr 25, 3:00 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie, Madison, Union	45 min
Apr 25, 3:19 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Union, Warren	41 min
Apr 25, 3:47 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Marion, Warren	43 min
Apr 25, 3:53 AM CDT	Severe Thunderstorm Warning	DMX	Marion, Polk, Warren	52 min
Apr 25, 4:25 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion	50 min
Apr 25, 4:42 AM CDT	Flash Flood Warning	DMX	Black Hawk	6 hr
Apr 25, 4:54 AM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Monroe, Wapello	40 min
Apr 25, 4:59 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Poweshiek	46 min
Apr 25, 5:06 AM CDT	Flash Flood Warning	DMX	Bremer, Butler, Franklin, Grundy, Hardin	6 hr
Apr 25, 6:51 AM CDT	River Flood Warning	DMX	Marshall	3 days
Apr 25, 7:03 AM CDT	River Flood Warning	DMX	Humboldt, Kossuth	5 days
Apr 25, 7:09 AM CDT	River Flood Warning	DMX	Hamilton, Webster	14 hr
Apr 25, 7:17 AM CDT	River Flood Warning	DMX	Black Hawk, Butler	6 days
Apr 25, 7:19 AM CDT	River Flood Warning	DMX	Black Hawk, Bremer, Butler	61 hr
Apr 25, 7:51 AM CDT	River Flood Warning	DMX	Dallas	13 hr
Apr 25, 7:55 AM CDT	River Flood Warning	DMX	Polk	27 hr
Apr 25, 7:55 AM CDT	River Flood Warning	DMX	Polk	13 hr
Apr 25, 7:58 AM CDT	River Flood Warning	DMX	Madison, Warren	26 hr
Apr 25, 8:06 AM CDT	River Flood Warning	DMX	Mahaska	5 days
Apr 25, 10:01 AM CDT	Areal Flood Warning	DMX	Tama	12 hr
Apr 25, 10:58 AM CDT	Areal Flood Warning	DMX	Black Hawk, Bremer, Butler, Franklin, Grundy, Hardin and 2 more	12 hr
Apr 25, 11:11 AM CDT	River Flood Warning	DMX	Black Hawk, Bremer	23 hr
Apr 25, 11:11 AM CDT	River Flood Warning	DMX	Polk	10 hr
Apr 25, 11:11 AM CDT	River Flood Warning	DMX	Dallas, Polk	10 hr
Apr 25, 11:11 AM CDT	River Flood Warning	DMX	Humboldt	10 hr
Apr 25, 11:11 AM CDT	River Flood Warning	DMX	Polk, Story	28 hr
Apr 25, 11:11 AM CDT	River Flood Warning	DMX	Jasper	9 hr
Apr 25, 3:08 PM CDT	River Flood Warning	DMX	Story	5 hr

Nearby

River Flood Warnings in Iowa, 2008 Every river flood warning in 2008

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.