Alert archive / South Dakota / River Flood Warnings in 2010

River Flood Warning 66, NWS Sioux Falls, SD

June 19, 2010Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this river flood warning at Jun 19, 2010, 9:31 PM CDT for Minnehaha County, South Dakota. It took effect at Jun 20, 2010, 1:00 AM CDT. It was in force for 4 days.

The area

The counties it named.

The facts

Issued: Jun 19, 2010, 9:31 PM CDT (02:31 UTC)
In effect from: Jun 20, 2010, 1:00 AM CDT
Expired: Jun 24, 2010, 10:57 AM CDT
In force: 4 days
Issued by: NWS Sioux Falls, SD
Flood severity: Minor

County Minnehaha County, SD

The radar

The Sioux Falls radar (KFSD), 11 km from the middle of the area, began a volume at 02:31 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 Big Sioux River at Sioux Falls I-90 (SFLS2).

Action stage: 11 ft
Minor stage: 12 ft
Moderate stage: 15 ft
Major stage: 17 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record, 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 Jun 19, 4:15 PM CDT, 5 hours 16 minutes earlier.

Area forecast discussion, Jun 19, 4:15 PM CDT, 5 hours 16 minutes before

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Hazardous weather outlook, Jun 19, 10:56 AM CDT, 10 hours 35 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1056 AM CDT SAT JUN 19 2010

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-201200-
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-
1056 AM CDT SAT JUN 19 2010

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
A WARM FRONT WILL LIFT NORTHWARD INTO NEBRASKA TONIGHT WITH
THUNDERSTORMS BECOMING LIKELY SOUTH OF INTERSTATE 90 DURING THE
NIGHT. A FEW OF THESE STORMS MAY PRODUCE HAIL TO THE SIZE OF
QUARTERS...ESPECIALLY SOUTH OF A LINE FROM SPENCER IOWA TO
YANKTON SOUTH DAKOTA.

FLOODING...
STORMS ARE EXPECTED TO DEVELOP ACROSS FAR SOUTHEASTERN SOUTH
DAKOTA INTO NORTHEAST NEBRASKA AND NORTHWEST IOWA TONIGHT. THESE
STORMS MAY PRODUCE AN INCH TO AN INCH AND A HALF OF RAIN ACROSS
THIS AREA. ADDITIONAL THUNDERSTORMS ARE EXPECTED TO DEVELOP ON
SUNDAY EVENING NEAR THE NEBRASKA AND SOUTH DAKOTA BORDER. WHILE A
FEW STORMS MAY MOVE NORTH OF INTERSTATE 90...STORMS ARE MOST
LIKELY SOUTH OF INTERSTATE 90.	A FEW STORMS MAY BE SEVERE WITH
LARGE HAIL DURING THE EVENING SOUTH OF A LINE FROM LAKE ANDES
SOUTH DAKOTA TO SPENCER IOWA. THERE IS ALSO THE POTENTIAL FOR
HEAVY RAIN SUNDAY NIGHT ALONG THE SOUTH DAKOTA AND NEBRASKA
BORDER INTO NORTHWESTERN IOWA. WITH THE GROUND NEARLY SATURATED
THIS MAY RESULT IN FLASH FLOODING. THE HEAVY RAIN MAY ALSO HAVE
AN IMPACT OF RIVER FLOODING THAT IS ONGOING ACROSS THE REGION.

RUNOFF FROM HEAVY RAINFALL RECENTLY HAS CAUSED FLOODING ON MANY
RIVERS AND STREAMS ACROSS THIS AREA. PARTS OF MAIN STEM RIVERS
WHICH ARE IN FLOOD...AND EXPECTED TO CONTINUE FLOODING FOR THE
NEXT SEVERAL DAYS INCLUDE...THE BIG SIOUX AND VERMILLION RIVERS
IN SOUTHEAST SOUTH DAKOTA...AS WELL AS THE LITTLE SIOUX RIVER IN
NORTHWEST IOWA NEAR LINN GROVE. THE JAMES RIVER WILL REMAIN IN
FLOOD FOR THE FORESEEABLE FUTURE. AREAL FLOODING OF SMALL STREAMS
AND CREEKS DUE TO HEAVY RAIN LAST WEEKEND CONTINUES IN SOUTH
CENTRAL SOUTH DAKOTA BETWEEN THE JAMES RIVER AND MISSOURI
RIVER...RESULTING IN NUMEROUS ROAD CLOSURES IN RURAL AREAS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THUNDERSTORMS ARE ONCE AGAIN EXPECTED SUNDAY NIGHT.  A FEW OF
THESE STORMS MAY BE CAPABLE OF PRODUCING HAIL TO THE SIZE OF HALF
DOLLARS...BUT OF BIGGER CONCERN WILL BE THE POTENTIAL FOR HEAVY
RAINS AND FLASH FLOODING.

THERE IS A CHANCE OF THUNDERSTORMS MONDAY THROUGH WEDNESDAY WITH
THE BEST CHANCE FOR RAIN MAINLY DURING THE NIGHT. WHILE SEVERE
WEATHER CANNOT BE RULED OUT...THE GREATEST CONCERN WILL BE THE
POTENTIAL FOR HEAVY RAIN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE POSSIBLE AFTER 7 PM ALONG AND SOUTH OF
A LINE FROM STORM LAKE IOWA TO LAKE ANDES SOUTH DAKOTA.

&&

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

RSR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 11:13 PM CDT	Areal Flood Warning	FSD	Aurora, Charles Mix, Davison, Douglas, Hanson, Hutchinson	24 hr
Jun 20, 5:38 AM CDT	Severe Thunderstorm Warning	FSD	Union	37 min

Nearby

River Flood Warnings in South Dakota, 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.