


River Forecast
Issued by NWS
Issued by NWS
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312 FGUS53 KKRF 180138 RVFSIO RIVER FORECAST NWS MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO 0137Z MON AUG 18 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 : *** EVENING FORECAST *** : ********************************************************** : *** THESE FORECASTS ARE SIGNIFICANTLY AFFECTED BY QPF *** : ********************************************************** : ==> This forecast includes obsd precip & 24 hours of QPF RIVER/STATION FS TDY F O R E C A S T BIG SIOUX RIVER CASTLEWOOD 1 NW SD 9.0 8.7 CREST NEAR 9.8 FT 08/18 PM :________________________________________________________________ :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 8.7 FT AT 0045Z ON AUG 18 :obs Stage / 06Z / 12Z / 18Z / 00Z : 0817 / 8.6 / 8.6 / 8.5 / 8.7 : :RISE ABOVE FLOOD STAGE AROUND 09Z ON 08/18/2025 .AR :CREST: CSWS2 0819 Z DC202508180137/DH0000/HGIFFXZ 9.8 :FALL BELOW FLOOD STAGE AROUND 15Z ON 08/20/2025 .ER CSWS2 20250818 Z DC202508180137/DH06/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0817 : / 8.9 .E2 : 0818 : / 9.4 / 9.7 / 9.8 / 9.7 .E3 : 0819 : / 9.6 / 9.4 / 9.3 / 9.1 .E4 : 0820 : / 9.0 / 9.0 / 8.9 / 8.9 .E5 : 0821 : / 8.8 / 8.8 / 8.8 / 8.7 .E6 : 0822 : / 8.6 / 8.6 / 8.5 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 06Z / 12Z / 18Z / 00Z : 0817 / 0.00 / 0.01 / 0.04 / 0.35 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending Aug 18 at 00Z is 0.40 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 24 hrs): : / 12Z / 18Z / 00Z / 06Z : 0817 / 0.39 : 0818 / 0.00 / 0.00 / 0.00 : :Local forecast 24-hr basin-averaged precip total : QPF Total Ending Aug 19 0.39 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 cwh :...END of MESSAGE...