FGUS53 KKRF 181525 RVFMIL RIVER FORECAST NWS MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO 1525Z MON MAY 18 2026 : : THIS PRODUCT HAS PRELIMINARY DATA AND SUBJECT TO REVISION. : REFER TO YOUR LOCAL WFO FOR THE LATEST OFFICIAL RIVER FORECAST. : FORECAST GROUP IS MILK : ************************************************************** : *** This forecast includes projected snowmelt due to *** : *** forecasted 6-hour mean temperatures for next 15 days. *** : ************************************************************** : ==> This forecast includes obsd precip & 72 hours of QPF :________________________________________________________________ :INTL BOUNDARY, MT - SAINT MARY RIVER HSA - TFX :MINOR FLOOD STAGE 7.5 FT FCST ISSUANCE STAGE 6.5 FT :MODERATE FLOOD STAGE 8.5 FT MAJOR FLOOD STAGE 9.5 FT :LATEST RIVER STAGE 5.6 FT AT 1410Z ON MAY 18 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0517 / 5.7 / 5.7 / 5.7 / 5.6 : .ER SMBM8 20260518 Z DC202605181525/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0518 : / 5.6 / 5.5 / 5.4 .E2 : 0519 : / 5.4 / 5.3 / 5.3 / 5.3 .E3 : 0520 : / 5.3 / 5.3 / 5.3 / 5.3 .E4 : 0521 : / 5.4 / 5.4 / 5.4 / 5.4 .E5 : 0522 : / 5.4 / 5.4 / 5.4 / 5.3 .E6 : 0523 : / 5.3 / 5.3 / 5.3 / 5.3 .E7 : 0524 : / 5.3 / 5.3 / 5.3 / 5.3 .E8 : 0525 : / 5.3 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0517 / 0.10 / 0.01 / 0.03 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 18 at 14Z is 0.14 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0518 / 0.00 / 0.02 / 0.01 : 0519 / 0.00 / 0.00 / 0.01 / 0.00 : 0520 / 0.00 / 0.08 / 0.18 / 0.13 : 0521 / 0.01 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 21 0.44 inches :INTL BOUNDARY, MT - SAINT MARY RIVER HSA - TFX :LATEST RIVER DISCHARGE 1.630 KCFS AT 1410Z ON MAY 18 : .ER SMBM8 20260518 Z DC202605181525/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0518 : / 1.549 / 1.468 / 1.395 .E2 : 0519 : / 1.342 / 1.309 / 1.280 / 1.255 .E3 : 0520 : / 1.244 / 1.245 / 1.252 / 1.273 .E4 : 0521 : / 1.335 / 1.401 / 1.419 / 1.408 .E5 : 0522 : / 1.389 / 1.368 / 1.344 / 1.319 .E6 : 0523 : / 1.298 / 1.285 / 1.274 / 1.264 .E7 : 0524 : / 1.259 / 1.257 / 1.255 / 1.250 .E8 : 0525 : / 1.244 : :________________________________________________________________ :EASTERN CROSSING, MT - MILK RIVER HSA - TFX :MINOR FLOOD STAGE 9.5 FT FCST ISSUANCE STAGE 8.5 FT :MODERATE FLOOD STAGE 11.0 FT MAJOR FLOOD STAGE 13.0 FT :LATEST RIVER STAGE 4.0 FT AT 1415Z ON MAY 18 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0517 / 3.9 / 3.9 / 4.0 / 4.0 : .ER ERNM8 20260518 Z DC202605181525/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0518 : / 4.0 / 4.0 / 4.0 .E2 : 0519 : / 4.0 / 4.0 / 4.1 / 4.1 .E3 : 0520 : / 4.1 / 4.0 / 4.0 / 4.0 .E4 : 0521 : / 4.0 / 4.0 / 4.0 / 4.0 .E5 : 0522 : / 4.0 / 4.0 / 4.0 / 4.0 .E6 : 0523 : / 4.0 / 4.0 / 4.0 / 4.0 .E7 : 0524 : / 4.0 / 4.0 / 4.0 / 4.0 .E8 : 0525 : / 4.0 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0517 / 0.04 / 0.03 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 18 at 14Z is 0.07 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0518 / 0.00 / 0.00 / 0.00 : 0519 / 0.00 / 0.00 / 0.01 / 0.00 : 0520 / 0.00 / 0.00 / 0.03 / 0.01 : 0521 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 21 0.05 inches :EASTERN CROSSING, MT - MILK RIVER HSA - TFX :LATEST RIVER DISCHARGE 0.502 KCFS AT 1415Z ON MAY 18 : .ER ERNM8 20260518 Z DC202605181525/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0518 : / 0.480 / 0.489 / 0.501 .E2 : 0519 : / 0.512 / 0.520 / 0.522 / 0.523 .E3 : 0520 : / 0.521 / 0.515 / 0.506 / 0.498 .E4 : 0521 : / 0.493 / 0.492 / 0.493 / 0.493 .E5 : 0522 : / 0.490 / 0.490 / 0.491 / 0.491 .E6 : 0523 : / 0.492 / 0.492 / 0.492 / 0.493 .E7 : 0524 : / 0.493 / 0.493 / 0.494 / 0.494 .E8 : 0525 : / 0.494 : :________________________________________________________________ :HARLEM 4 SSE, MT - MILK RIVER HSA - TFX :MINOR FLOOD STAGE 21.0 FT FCST ISSUANCE STAGE 19.0 FT :MODERATE FLOOD STAGE 23.0 FT MAJOR FLOOD STAGE 25.0 FT :LATEST RIVER STAGE 6.8 FT AT 1430Z ON MAY 18 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0517 / 6.4 / 6.6 / 6.8 / 6.9 : .ER HRLM8 20260518 Z DC202605181525/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0518 : / 6.8 / 6.9 / 7.1 .E2 : 0519 : / 7.3 / 7.4 / 7.6 / 7.7 .E3 : 0520 : / 7.8 / 7.8 / 7.7 / 7.7 .E4 : 0521 : / 7.8 / 7.8 / 7.8 / 7.8 .E5 : 0522 : / 7.8 / 7.8 / 7.8 / 7.8 .E6 : 0523 : / 7.8 / 7.7 / 7.7 / 7.7 .E7 : 0524 : / 7.6 / 7.6 / 7.6 / 7.5 .E8 : 0525 : / 7.5 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0517 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 18 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0518 / 0.00 / 0.00 / 0.00 : 0519 / 0.00 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.02 / 0.00 : 0521 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 21 0.02 inches :HARLEM 4 SSE, MT - MILK RIVER HSA - TFX :LATEST RIVER DISCHARGE 0.590 KCFS AT 1430Z ON MAY 18 : .ER HRLM8 20260518 Z DC202605181525/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0518 : / 0.580 / 0.595 / 0.620 .E2 : 0519 : / 0.644 / 0.664 / 0.685 / 0.701 .E3 : 0520 : / 0.706 / 0.707 / 0.699 / 0.700 .E4 : 0521 : / 0.706 / 0.711 / 0.712 / 0.712 .E5 : 0522 : / 0.712 / 0.712 / 0.711 / 0.708 .E6 : 0523 : / 0.704 / 0.701 / 0.699 / 0.697 .E7 : 0524 : / 0.691 / 0.685 / 0.682 / 0.676 .E8 : 0525 : / 0.672 : :________________________________________________________________ :NASHUA 1 SW, MT - MILK RIVER HSA - GGW :MINOR FLOOD STAGE 20.0 FT FCST ISSUANCE STAGE 18.0 FT :MODERATE FLOOD STAGE 28.0 FT MAJOR FLOOD STAGE 30.0 FT :LATEST RIVER STAGE 1.6 FT AT 1400Z ON MAY 18 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0517 / 1.5 / 1.5 / 1.6 / 1.6 : .ER NSHM8 20260518 Z DC202605181525/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0518 : / 1.6 / 1.6 / 1.7 .E2 : 0519 : / 1.7 / 1.7 / 1.7 / 1.7 .E3 : 0520 : / 1.7 / 1.7 / 1.6 / 1.6 .E4 : 0521 : / 1.6 / 1.5 / 1.5 / 1.5 .E5 : 0522 : / 1.5 / 1.5 / 1.5 / 1.5 .E6 : 0523 : / 1.5 / 1.5 / 1.5 / 1.5 .E7 : 0524 : / 1.5 / 1.5 / 1.5 / 1.5 .E8 : 0525 : / 1.5 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0517 / 0.00 / 0.07 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 18 at 14Z is 0.07 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0518 / 0.00 / 0.00 / 0.00 : 0519 / 0.00 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.02 / 0.00 : 0521 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 21 0.02 inches :NASHUA 1 SW, MT - MILK RIVER HSA - GGW :LATEST RIVER DISCHARGE 0.106 KCFS AT 1400Z ON MAY 18 : .ER NSHM8 20260518 Z DC202605181525/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0518 : / 0.108 / 0.114 / 0.118 .E2 : 0519 : / 0.123 / 0.130 / 0.135 / 0.135 .E3 : 0520 : / 0.129 / 0.118 / 0.109 / 0.100 .E4 : 0521 : / 0.093 / 0.087 / 0.082 / 0.078 .E5 : 0522 : / 0.075 / 0.074 / 0.074 / 0.074 .E6 : 0523 : / 0.074 / 0.075 / 0.075 / 0.075 .E7 : 0524 : / 0.075 / 0.075 / 0.076 / 0.076 .E8 : 0525 : / 0.077 : :**************************************************************** :COMMENT : : :HSA - Hydrologic Service Area :WFO - Weather Forecast Office :TFX - NWS WFO Great Falls, Montana :GGW - NWS WFO Glasgow, Montana :BIS - NWS WFO Bismarck, North 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 jmt :...END of MESSAGE...