River Forecast
Issued by NWS
Issued by NWS
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FGUS53 KKRF 171300
RVFSIO
RIVER FORECAST
NWS MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO
1255Z SUN AUG 17 2025
:
: THIS PRODUCT HAS PRELIMINARY DATA AND SUBJECT TO REVISION.
: REFER TO YOUR LOCAL WFO FOR THE LATEST OFFICIAL RIVER FORECAST.
: FORECAST GROUP IS SIOUXS
: ==> This forecast includes obsd precip & 24 hours of QPF
RIVER/STATION FS TDY F O R E C A S T
BIG SIOUX RIVER
WATERTOWN SD 9.0 8.0 CONTINUE TO FALL..LAST FCST
FCST PRECIP TOTALS CHANGED
WATERTOWN SD 10.5 9.5 WITHIN BANK RISE..NO
FURTHER FCSTS EXPECTED
FCST PRECIP TOTALS CHANGED
CASTLEWOOD 1 NW SD 9.0 8.5 CREST NEAR 9.0 FT 08/18
EARLY PM
FCST PRECIP TOTALS CHANGED
BROOKINGS 10 SE SD 9.0 6.2 WITHIN BANK RISE..NO
FURTHER FCSTS EXPECTED
FCST PRECIP TOTALS CHANGED
:________________________________________________________________
:WATERTOWN, SD - BIG SIOUX RIVER HSA - ABR
:MINOR FLOOD STAGE 9.0 FT FCST ISSUANCE STAGE 8.0 FT
:MODERATE FLOOD STAGE 10.0 FT MAJOR FLOOD STAGE 12.0 FT
:LATEST RIVER STAGE 8.0 FT AT 1215Z ON AUG 17
:obs Stage / 18Z / 00Z / 06Z / 12Z
: 0816 / 8.1 / 8.1 / 8.1 / 8.0
.ER WBSS2 20250817 Z DC202508171255/DH18/HGIFFZZ/DIH6
:Stage Fcst / 12Z / 18Z / 00Z / 06Z
.E1 : 0817 : / 8.0 / 8.0 / 8.0
.E2 : 0818 : / 8.0 / 7.9 / 7.9 / 7.9
.E3 : 0819 : / 7.9 / 7.9 / 7.9 / 7.8
.E4 : 0820 : / 7.8 / 7.8 / 7.8 / 7.8
.E5 : 0821 : / 7.8 / 7.8 / 7.7 / 7.7
.E6 : 0822 : / 7.7
:Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs):
: / 18Z / 00Z / 06Z / 12Z
: 0816 / 0.00 / 0.00 / 0.00 / 0.03
:
:Local observed 24-hr basin-averaged precip total
: QPE Total Ending Aug 17 at 12Z is 0.03 inches
:
:Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs):
: / 12Z / 18Z / 00Z / 06Z
: 0817 / 0.01 / 0.11 / 0.30
: 0818 / 0.00
:
:Local forecast 24-hr basin-averaged precip total
: QPF Total Ending Aug 18 0.42 inches
:________________________________________________________________
:WATERTOWN, SD - BIG SIOUX RIVER HSA - ABR
:MINOR FLOOD STAGE 10.5 FT FCST ISSUANCE STAGE 10.0 FT
:MODERATE FLOOD STAGE 11.0 FT MAJOR FLOOD STAGE 13.5 FT
:LATEST RIVER STAGE 9.5 FT AT 1200Z ON AUG 17
:obs Stage / 18Z / 00Z / 06Z / 12Z
: 0816 / 9.6 / 9.5 / 9.5 / 9.5
.ER WBWS2 20250817 Z DC202508171255/DH18/HGIFFZZ/DIH6
:Stage Fcst / 12Z / 18Z / 00Z / 06Z
.E1 : 0817 : / 9.4 / 9.3 / 9.4
.E2 : 0818 : / 9.5 / 9.4 / 9.3 / 9.3
.E3 : 0819 : / 9.2 / 9.1 / 9.1 / 9.1
.E4 : 0820 : / 9.1 / 9.1 / 9.0 / 9.0
.E5 : 0821 : / 9.0 / 9.0 / 8.9 / 8.9
.E6 : 0822 : / 8.9
:Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs):
: / 18Z / 00Z / 06Z / 12Z
: 0816 / 0.01 / 0.00 / 0.00 / 0.01
:
:Local observed 24-hr basin-averaged precip total
: QPE Total Ending Aug 17 at 12Z is 0.02 inches
:
:Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs):
: / 12Z / 18Z / 00Z / 06Z
: 0817 / 0.01 / 0.10 / 0.30
: 0818 / 0.00
:
:Local forecast 24-hr basin-averaged precip total
: QPF Total Ending Aug 18 0.41 inches
:________________________________________________________________
:CASTLEWOOD 1 NW, SD - BIG SIOUX RIVER HSA - ABR
:MINOR FLOOD STAGE 9.0 FT FCST ISSUANCE STAGE 8.0 FT
:MODERATE FLOOD STAGE 11.0 FT MAJOR FLOOD STAGE 16.0 FT
:LATEST RIVER STAGE 8.5 FT AT 1245Z ON AUG 17
:obs Stage / 18Z / 00Z / 06Z / 12Z
: 0816 / 8.7 / 8.6 / 8.6 / 8.6
.AR :CREST: CSWS2 0818 Z DC202508171255/DH1800/HGIFFXZ 9.0
.ER CSWS2 20250817 Z DC202508171255/DH18/HGIFFZZ/DIH6
:Stage Fcst / 12Z / 18Z / 00Z / 06Z
.E1 : 0817 : / 8.5 / 8.5 / 8.5
.E2 : 0818 : / 8.8 / 9.0 / 9.0 / 9.0
.E3 : 0819 : / 8.9 / 8.7 / 8.6 / 8.5
.E4 : 0820 : / 8.4 / 8.3 / 8.2 / 8.2
.E5 : 0821 : / 8.2 / 8.1 / 8.1 / 8.1
.E6 : 0822 : / 8.1
:Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs):
: / 18Z / 00Z / 06Z / 12Z
: 0816 / 0.00 / 0.00 / 0.00 / 0.02
:
:Local observed 24-hr basin-averaged precip total
: QPE Total Ending Aug 17 at 12Z is 0.02 inches
:
:Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs):
: / 12Z / 18Z / 00Z / 06Z
: 0817 / 0.01 / 0.15 / 0.31
: 0818 / 0.00
:
:Local forecast 24-hr basin-averaged precip total
: QPF Total Ending Aug 18 0.47 inches
:________________________________________________________________
:BROOKINGS 10 SE, SD - BIG SIOUX RIVER HSA - FSD
:MINOR FLOOD STAGE 9.0 FT FCST ISSUANCE STAGE 8.0 FT
:MODERATE FLOOD STAGE 10.5 FT MAJOR FLOOD STAGE 15.0 FT
:LATEST RIVER STAGE 6.2 FT AT 1145Z ON AUG 17
:obs Stage / 18Z / 00Z / 06Z / 12Z
: 0816 / 6.3 / 6.3 / 6.3 / 6.2
.ER BRKS2 20250817 Z DC202508171255/DH18/HGIFFZZ/DIH6
:Stage Fcst / 12Z / 18Z / 00Z / 06Z
.E1 : 0817 : / 6.3 / 6.3 / 6.3
.E2 : 0818 : / 6.3 / 6.4 / 6.5 / 6.5
.E3 : 0819 : / 6.6 / 6.7 / 6.8 / 6.9
.E4 : 0820 : / 7.0 / 7.2 / 7.3 / 7.4
.E5 : 0821 : / 7.5 / 7.6 / 7.6 / 7.5
.E6 : 0822 : / 7.5
:Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs):
: / 18Z / 00Z / 06Z / 12Z
: 0816 / 0.03 / 0.00 / 0.01 / 0.04
:
:Local observed 24-hr basin-averaged precip total
: QPE Total Ending Aug 17 at 11Z is 0.08 inches
:
:Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs):
: / 12Z / 18Z / 00Z / 06Z
: 0817 / 0.00 / 0.20 / 0.38
: 0818 / 0.04
:
:Local forecast 24-hr basin-averaged precip total
: QPF Total Ending Aug 18 0.62 inches
:****************************************************************
:COMMENT
:
:
:HSA - Hydrologic Service Area
:WFO - Weather Forecast Office
:FSD - NWS WFO Sioux Falls, South Dakota
:DMX - NWS WFO Des Moines, Iowa
:OAX - NWS WFO Omaha, Nebraska
:ABR - NWS WFO Aberdeen, South Dakota
:OBS - Observed
:EST - Estimated
:M - Missing
:Stage Fcst - River Stage forecast including future precipitation
:Flow Fcst - River Flow forecast including future precipitation
:Precip - Precipitation
:QPE - Observed radar estimated precipitation
:QPF - Forecasted mean areal precipitation for local basin
:
:
$$
:MBRFC ecd
:...END of MESSAGE...