Alert archive / Iowa / River Flood Warnings in 2010

River Flood Warning 148, NWS Sioux Falls, SD

August 10, 2010Lyon County, Iowa

NWS Sioux Falls, SD issued this river flood warning at Aug 10, 2010, 9:03 AM CDT for Lyon County, Iowa. It took effect at Aug 11, 2010, 1:40 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Aug 10, 2010, 9:03 AM CDT (14:03 UTC)
In effect from: Aug 11, 2010, 1:40 AM CDT
Expired: Aug 10, 2010, 9:31 PM CDT
In force
Issued by: NWS Sioux Falls, SD
Flood severity: Minor

County Lyon County, IA

The radar

The Sioux Falls radar (KFSD), 48 km from the middle of the area, began a volume at 14:05 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 Rock River at Rock Rapids (RAPI4).

Action stage: 11 ft
Minor stage: 13 ft
Moderate stage: 16 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06483290, 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 Sioux Falls, SD wrote its last area forecast discussion before this river flood warning went out at Aug 10, 6:06 AM CDT, 2 hours 57 minutes earlier.

Area forecast discussion, Aug 10, 6:06 AM CDT, 2 hours 57 minutes before

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Hazardous weather outlook, Aug 10, 6:25 AM CDT, 2 hours 38 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
625 AM CDT TUE AUG 10 2010

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-111200-
AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA-
CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE-
DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON-
IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN-
LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN-
OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN-
SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON-
625 AM CDT TUE AUG 10 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
THUNDERSTORMS WILL CONTINUE TO LIFT NORTHEAST ACROSS EASTERN
SOUTH DAKOTA...SOUTHWEST MINNESOTA AND NORTHWEST IOWA EARLY THIS
MORNING. A FEW STORMS MAY PRODUCE WINDS OF 40 TO 60 MPH...AND
HEAVY RAINFALL WITH UP TO 2 TO 3 INCHES PER HOUR RATES COULD
PRODUCE SOME FLASH FLOODING...ESPECIALLY IN URBAN AREAS.

AFTER A BREAK FROM PRECIPITATION DURING THE MID TO LATE MORNING
HOURS...ADDITIONAL SCATTERED THUNDERSTORMS ARE EXPECTED TO
REDEVELOP EARLY TO MID AFTERNOON. THE MOST LIKELY AREA FOR THIS
REDEVELOPMENT WILL BE AROUND THE INTERSTATE 29 CORRIDOR...WITH
STORMS PUSHING EAST THROUGH EARLY EVENING. THESE STORMS WILL
GENERALLY BE CAPABLE OF PRODUCING DAMAGING WINDS UP TO 70
MPH...HAIL TO HALF DOLLAR SIZE... AND PERHAPS A TORNADO EARLY IN
THE DEVELOPMENT CYCLE THROUGH EARLY EVENING. HEAVY RAINFALL AND
FLASH FLOODING WILL ALSO BE A THREAT.

FLOODING...
RIVER FLOODING WILL CONTINUE ALONG THE JAMES RIVER FOR AN
EXTENDED PERIOD. MINOR RIVER FLOODING IS ALSO OCCURRING OVER
PARTS OF THE VERMILLION RIVER NEAR WAKONDA...AND ON THE LITTLE
SIOUX RIVER NEAR LINN GROVE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A FEW THUNDERSTORMS WILL BE POSSIBLE THROUGH THE DAY
THURSDAY...MAINLY NORTH OF A LINE FROM MARSHALL TO YANKTON.
SIGNIFICANT DEVELOPMENT OF THUNDERSTORM WILL BE POSSIBLE BY LATE
AFTERNOON AND EARLY EVENING. AT THIS TIME...THE GREATEST CHANCE
FOR SEVERE STORMS WITH LARGE HAIL AND DAMAGING WINDS WILL BE
ALONG AND NORTH OF INTERSTATE 90. HEAVY RAINFALL IS ALSO PROBABLE
SHOULD STORMS ORGANIZE THURSDAY NIGHT.

ADDITIONAL THUNDERSTORMS ARE EXPECTED ON FRIDAY INTO FRIDAY
NIGHT... WITH THE THREAT FOR HEAVIER RAINFALL AND PERHAPS
ISOLATED SEVERE STORMS THROUGH NORTHWEST IOWA.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL BE POSSIBLE AFTER 3 PM.

&&

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.WEATHER.GOV/SIOUXFALLS. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

In the hours before

Local storm report, Aug 10, 4:45 AM CDT, 4 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
445 AM CDT TUE AUG 10 2010

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

0441 AM     FLASH FLOOD      3 SE SIOUX FALLS        43.51N 96.69W
08/10/2010                   MINNEHAHA          SD   TRAINED SPOTTER

            1 FOOT OF WATER IN INTERSECTION OF 26TH AND ALPINE.

&&

JCHAPMAN

Local storm report, Aug 10, 5:53 AM CDT, 3 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
553 AM CDT TUE AUG 10 2010

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

0552 AM     FLASH FLOOD      LUVERNE                 43.65N 96.21W
08/10/2010                   ROCK               MN   LAW ENFORCEMENT

            SOUTH DONALDSON IS UNDER WATER AS WELL AS PORTIONS OF
            HIGHWAY 75.

&&

KWEISSER

Local storm report, Aug 10, 6:39 AM CDT, 2 hours 24 minutes before

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Local storm report, Aug 10, 7:48 AM CDT, 1 hour 15 minutes before

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Local storm report, Aug 10, 8:25 AM CDT, 38 minutes before

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Local storm report, Aug 10, 8:34 AM CDT, 29 minutes before

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The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 3:10 AM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas, Gregory	35 min
Aug 10, 4:25 AM CDT	Flash Flood Warning	FSD	Lincoln, Minnehaha	2 hr
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Lincoln, Union	5 days
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Union	5 days
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Bon Homme, Charles Mix	50 days
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Bon Homme	118 days
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Bon Homme	118 days
Aug 10, 9:09 AM CDT	River Flood Warning	FSD	Turner	24 hr
Aug 10, 4:22 AM CDT	Heat Advisory	FSD	Buena Vista, Cherokee, Ida, Woodbury	7 hr
Aug 10, 6:47 AM CDT	Flash Flood Warning	FSD	Clay, Dickinson, O'Brien, Osceola	3 hr
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	O'Brien	49 hr
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Sioux	4 days
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Plymouth	12 hr
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Clay	4 days
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Clay	6 days
Aug 10, 9:03 AM CDT	River Flood Warning	FSD	Cherokee	8 days
Aug 10, 1:39 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	36 min
Aug 10, 4:55 AM CDT	Severe Thunderstorm Warning	FSD	Rock	35 min
Aug 10, 5:42 AM CDT	Flash Flood Warning	FSD	Nobles, Rock	67 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.