River Forecast
Issued by NWS
Issued by NWS
761
FGUS53 KKRF 231432
RVFSIO
RIVER FORECAST
NWS MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO
1431Z SAT AUG 23 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 9.0 CRESTING
WATERTOWN SD 10.5 10.8 FALL BLO FS 08/24 EARLY AM
CASTLEWOOD 1 NW SD 9.0 11.1 CREST NEAR 11.2 FT 08/23
EARLY PM
BROOKINGS 10 SE SD 9.0 7.5 CREST NEAR 8.3 FT 08/26 AM
:________________________________________________________________
: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 9.0 FT AT 1415Z ON AUG 23
:obs Stage / 18Z / 00Z / 06Z / 12Z
: 0822 / 8.1 / 8.5 / 9.0 / 9.0
:
.AR :CREST: WBSS2 0823 Z DC202508231431/DH1800/HGIFFXZ 9.0
.ER WBSS2 20250823 Z DC202508231431/DH18/HGIFFZZ/DIH6
:Stage Fcst / 12Z / 18Z / 00Z / 06Z
.E1 : 0823 : / 9.0 / 9.0 / 8.8
.E2 : 0824 : / 8.6 / 8.4 / 8.3 / 8.2
.E3 : 0825 : / 8.2 / 8.2 / 8.2 / 8.2
.E4 : 0826 : / 8.2 / 8.2 / 8.2 / 8.2
.E5 : 0827 : / 8.2 / 8.1 / 8.1 / 8.1
.E6 : 0828 : / 8.1
:Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs):
: / 18Z / 00Z / 06Z / 12Z
: 0822 / 0.98 / 0.00 / 0.00 / 0.00
:
:Local observed 24-hr basin-averaged precip total
: QPE Total Ending Aug 23 at 14Z is 0.98 inches
:
:Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs):
: / 12Z / 18Z / 00Z / 06Z
: 0823 / 0.00 / 0.00 / 0.00
: 0824 / 0.00
:
:Local forecast 24-hr basin-averaged precip total
: QPF Total Ending Aug 24 0.00 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 10.8 FT AT 1400Z ON AUG 23
:obs Stage / 18Z / 00Z / 06Z / 12Z
: 0822 / 10.6 / 10.8 / 10.9 / 10.8
:
:FALL BELOW FLOOD STAGE AROUND 09Z ON 08/24/2025
.ER WBWS2 20250823 Z DC202508231431/DH18/HGIFFZZ/DIH6
:Stage Fcst / 12Z / 18Z / 00Z / 06Z
.E1 : 0823 : / 10.8 / 10.7 / 10.6
.E2 : 0824 : / 10.4 / 10.1 / 9.9 / 9.9
.E3 : 0825 : / 9.9 / 9.8 / 9.8 / 9.8
.E4 : 0826 : / 9.8 / 9.8 / 9.8 / 9.8
.E5 : 0827 : / 9.7 / 9.7 / 9.7 / 9.7
.E6 : 0828 : / 9.7
:Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs):
: / 18Z / 00Z / 06Z / 12Z
: 0822 / 0.34 / 0.00 / 0.00 / 0.00
:
:Local observed 24-hr basin-averaged precip total
: QPE Total Ending Aug 23 at 14Z is 0.34 inches
:
:Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs):
: / 12Z / 18Z / 00Z / 06Z
: 0823 / 0.00 / 0.00 / 0.00
: 0824 / 0.00
:
:Local forecast 24-hr basin-averaged precip total
: QPF Total Ending Aug 24 0.00 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 11.1 FT AT 1345Z ON AUG 23
:obs Stage / 18Z / 00Z / 06Z / 12Z
: 0822 / 9.6 / 10.3 / 10.8 / 11.1
:
.AR :CREST: CSWS2 0823 Z DC202508231431/DH1800/HGIFFXZ 11.2
:FALL BELOW FLOOD STAGE AROUND 06Z ON 08/26/2025
.ER CSWS2 20250823 Z DC202508231431/DH18/HGIFFZZ/DIH6
:Stage Fcst / 12Z / 18Z / 00Z / 06Z
.E1 : 0823 : / 11.2 / 11.2 / 11.1
.E2 : 0824 : / 11.0 / 10.8 / 10.5 / 10.1
.E3 : 0825 : / 9.7 / 9.4 / 9.2 / 9.0
.E4 : 0826 : / 8.9 / 8.9 / 8.8 / 8.7
.E5 : 0827 : / 8.6 / 8.6 / 8.6 / 8.6
.E6 : 0828 : / 8.6
:Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs):
: / 18Z / 00Z / 06Z / 12Z
: 0822 / 0.67 / 0.00 / 0.00 / 0.00
:
:Local observed 24-hr basin-averaged precip total
: QPE Total Ending Aug 23 at 13Z is 0.67 inches
:
:Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs):
: / 12Z / 18Z / 00Z / 06Z
: 0823 / 0.00 / 0.00 / 0.00
: 0824 / 0.00
:
:Local forecast 24-hr basin-averaged precip total
: QPF Total Ending Aug 24 0.00 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 7.5 FT AT 1345Z ON AUG 23
:obs Stage / 18Z / 00Z / 06Z / 12Z
: 0822 / 7.3 / 7.3 / 7.4 / 7.4
:
.AR :CREST: BRKS2 0826 Z DC202508231431/DH1200/HGIFFXZ 8.3
.ER BRKS2 20250823 Z DC202508231431/DH18/HGIFFZZ/DIH6
:Stage Fcst / 12Z / 18Z / 00Z / 06Z
.E1 : 0823 : / 7.5 / 7.6 / 7.7
.E2 : 0824 : / 7.8 / 7.9 / 8.0 / 8.0
.E3 : 0825 : / 8.1 / 8.1 / 8.2 / 8.2
.E4 : 0826 : / 8.3 / 8.3 / 8.3 / 8.2
.E5 : 0827 : / 8.1 / 8.0 / 8.0 / 7.9
.E6 : 0828 : / 7.9
:Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs):
: / 18Z / 00Z / 06Z / 12Z
: 0822 / 0.21 / 0.00 / 0.00 / 0.00
:
:Local observed 24-hr basin-averaged precip total
: QPE Total Ending Aug 23 at 13Z is 0.21 inches
:
:Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs):
: / 12Z / 18Z / 00Z / 06Z
: 0823 / 0.00 / 0.00 / 0.00
: 0824 / 0.00
:
:Local forecast 24-hr basin-averaged precip total
: QPF Total Ending Aug 24 0.00 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 RLW
:...END of MESSAGE...