Alert archive / South Dakota / River Flood Warnings in 2011

River Flood Warning 11, NWS Aberdeen, SD

March 21, 2011Hamlin County, South Dakota

NWS Aberdeen, SD issued this river flood warning at Mar 21, 2011, 9:39 AM CDT for Hamlin County, South Dakota. It took effect at Mar 21, 2011, 11:13 PM CDT. It was in force for 6 days.

The area

The counties it named.

The facts

Issued: Mar 21, 2011, 9:39 AM CDT (14:39 UTC)
In effect from: Mar 21, 2011, 11:13 PM CDT
Expired: Mar 27, 2011, 12:02 PM CDT
In force: 6 days
Issued by: NWS Aberdeen, SD
Flood severity: Minor

County Hamlin County, SD

The radar

The Sioux Falls radar (KFSD), 126 km from the middle of the area, began a volume at 14:42 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 near Castlewood (CSWS2).

Action stage: 8 ft
Minor stage: 9 ft
Moderate stage: 11 ft
Major stage: 16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06479525, 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 Aberdeen, SD wrote its last area forecast discussion before this river flood warning went out at Mar 21, 4:09 AM CDT, 5 hours 30 minutes earlier.

Area forecast discussion, Mar 21, 4:09 AM CDT, 5 hours 30 minutes before

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Hazardous weather outlook, Mar 21, 7:26 AM CDT, 2 hours 13 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE ABERDEEN SD
726 AM CDT MON MAR 21 2011

SDZ003>005-009-010-015>017-033>037-045-048-051-221230-
CORSON-CAMPBELL-MCPHERSON-WALWORTH-EDMUNDS-DEWEY-POTTER-FAULK-
STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-LYMAN-BUFFALO-
726 AM CDT MON MAR 21 2011 /626 AM MDT MON MAR 21 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH
DAKOTA AND NORTH CENTRAL SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

PRECIPITATION AHEAD OF A DEVELOPING STORM SYSTEM WILL BEGIN TO
REACH THE REGION LATE MONDAY NIGHT/TUESDAY MORNING...WITH
WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY. THUNDERSTORMS ARE NOT
EXPECTED TO BE SEVERE...HOWEVER RAINFALL DURING THE DAY TUESDAY
COULD EXACERBATE ANY ONGOING FLOOD ISSUES. PRECIPITATION WILL
CHANGE OVER TO SNOW STARTING AT THE NORTH DAKOTA BORDER DURING
MID DAY TUESDAY...PROGRESSING SOUTH THROUGH THE AFTERNOON AND
EVENING...WITH THE ENTIRE CWA UNDER A COLD ENOUGH AIRMASS FOR
ACCUMULATING SNOW BY WEDNESDAY MORNING. IMPROVING CONDITIONS
EXPECTED LATE WEDNESDAY INTO EARLY THURSDAY...HOWEVER LOCATIONS IN
THE NORTHERN SISSETON HILLS/WEST CENTRAL MINNESOTA COULD SEE AS
MUCH AS 4" OF SNOW. LOWER AMOUNTS ARE EXPECTED ELSEWHERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.

MNZ039-046-SDZ006>008-011-018>023-221230-
TRAVERSE-BIG STONE-BROWN-MARSHALL-ROBERTS-DAY-SPINK-CLARK-
CODINGTON-GRANT-HAMLIN-DEUEL-
726 AM CDT MON MAR 21 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA AND NORTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

MORNING FOG IS EXPECTED FOR LOCATIONS LOCATED IN THE JAMES VALLEY
AND SISSETON HILLS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

PRECIPITATION AHEAD OF A DEVELOPING STORM SYSTEM WILL BEGIN TO
REACH THE REGION LATE MONDAY NIGHT/TUESDAY MORNING...WITH
WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY. THUNDERSTORMS ARE NOT
EXPECTED TO BE SEVERE...HOWEVER RAINFALL DURING THE DAY TUESDAY
COULD EXACERBATE ANY ONGOING FLOOD ISSUES. PRECIPITATION WILL
CHANGE OVER TO SNOW STARTING AT THE NORTH DAKOTA BORDER DURING
MID DAY TUESDAY...PROGRESSING SOUTH THROUGH THE AFTERNOON AND
EVENING...WITH THE ENTIRE CWA UNDER A COLD ENOUGH AIRMASS FOR
ACCUMULATING SNOW BY WEDNESDAY MORNING. IMPROVING CONDITIONS
EXPECTED LATE WEDNESDAY INTO EARLY THURSDAY...HOWEVER LOCATIONS IN
THE NORTHERN SISSETON HILLS/WEST CENTRAL MINNESOTA COULD SEE AS
MUCH AS 4" OF SNOW. LOWER AMOUNTS ARE EXPECTED ELSEWHERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.

CONNELLY

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 20, 8:01 PM CDT	Areal Flood Warning	ABR	Clark, Hamlin	24 hr
Mar 20, 8:59 PM CDT	River Flood Warning	ABR	Spink	243 days
Mar 20, 8:59 PM CDT	River Flood Warning	ABR	Spink	243 days
Mar 20, 8:59 PM CDT	River Flood Warning	ABR	Spink	67 days
Mar 20, 10:29 PM CDT	River Flood Warning	ABR	Codington	64 hr
Mar 20, 10:29 PM CDT	River Flood Warning	ABR	Codington	4 days
Mar 21, 7:06 AM CDT	Areal Flood Warning	ABR	Brown	60 hr
Mar 21, 9:24 AM CDT	Areal Flood Warning	ABR	Edmunds	5 days

Nearby

River Flood Warnings in South Dakota, 2011 Every river flood warning in 2011

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.