FGUS53 KKRF 191541 RVFUMO RIVER FORECAST NWS MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO 1541Z TUE MAY 19 2026 : : THIS PRODUCT HAS PRELIMINARY DATA AND SUBJECT TO REVISION. : REFER TO YOUR LOCAL WFO FOR THE LATEST OFFICIAL RIVER FORECAST. : FORECAST GROUP IS UPRMO : ************************************************************** : *** 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 :________________________________________________________________ :MELROSE 7 S, MT - BIG HOLE RIVER HSA - TFX :MINOR FLOOD STAGE 6.0 FT FCST ISSUANCE STAGE 5.0 FT :MODERATE FLOOD STAGE 7.5 FT MAJOR FLOOD STAGE 8.0 FT :LATEST RIVER STAGE 3.5 FT AT 1515Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 3.6 / 3.6 / 3.5 / 3.5 : .ER MLRM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.4 / 3.4 / 3.4 .E2 : 0520 : / 3.3 / 3.3 / 3.3 / 3.2 .E3 : 0521 : / 3.2 / 3.2 / 3.2 / 3.2 .E4 : 0522 : / 3.2 / 3.2 / 3.2 / 3.2 .E5 : 0523 : / 3.2 / 3.2 / 3.2 / 3.2 .E6 : 0524 : / 3.3 / 3.3 / 3.3 / 3.3 .E7 : 0525 : / 3.3 / 3.4 / 3.4 / 3.4 .E8 : 0526 : / 3.5 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 15Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.01 / 0.03 : 0521 / 0.01 / 0.02 / 0.00 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.07 inches :MELROSE 7 S, MT - BIG HOLE RIVER HSA - TFX :LATEST RIVER DISCHARGE 2.440 KCFS AT 1415Z ON MAY 19 : .ER MLRM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.402 / 2.335 / 2.273 .E2 : 0520 : / 2.211 / 2.153 / 2.102 / 2.060 .E3 : 0521 : / 2.030 / 2.022 / 2.028 / 2.025 .E4 : 0522 : / 2.009 / 1.989 / 1.967 / 1.959 .E5 : 0523 : / 1.957 / 1.963 / 1.991 / 2.030 .E6 : 0524 : / 2.075 / 2.127 / 2.169 / 2.207 .E7 : 0525 : / 2.247 / 2.300 / 2.357 / 2.403 .E8 : 0526 : / 2.438 : :________________________________________________________________ :TWIN BRIDGES 5 N, MT - JEFFERSON RIVER HSA - TFX :MINOR FLOOD STAGE 10.0 FT FCST ISSUANCE STAGE 9.0 FT :MODERATE FLOOD STAGE 11.0 FT MAJOR FLOOD STAGE 12.0 FT :LATEST RIVER STAGE 5.2 FT AT 1515Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 5.3 / 5.3 / 5.3 / 5.1 : .ER TWIM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 5.1 / 5.0 / 4.9 .E2 : 0520 : / 4.9 / 4.8 / 4.7 / 4.7 .E3 : 0521 : / 4.6 / 4.6 / 4.6 / 4.6 .E4 : 0522 : / 4.6 / 4.6 / 4.6 / 4.6 .E5 : 0523 : / 4.5 / 4.5 / 4.5 / 4.6 .E6 : 0524 : / 4.6 / 4.6 / 4.7 / 4.7 .E7 : 0525 : / 4.8 / 4.8 / 4.9 / 4.9 .E8 : 0526 : / 5.0 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 15Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.01 / 0.01 / 0.04 : 0521 / 0.03 / 0.02 / 0.00 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.11 inches :TWIN BRIDGES 5 N, MT - JEFFERSON RIVER HSA - TFX :LATEST RIVER DISCHARGE 2.500 KCFS AT 1415Z ON MAY 19 : .ER TWIM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.379 / 2.297 / 2.226 .E2 : 0520 : / 2.162 / 2.102 / 2.045 / 1.990 .E3 : 0521 : / 1.942 / 1.904 / 1.877 / 1.865 .E4 : 0522 : / 1.865 / 1.869 / 1.866 / 1.855 .E5 : 0523 : / 1.842 / 1.838 / 1.842 / 1.855 .E6 : 0524 : / 1.884 / 1.927 / 1.980 / 2.037 .E7 : 0525 : / 2.091 / 2.143 / 2.195 / 2.253 .E8 : 0526 : / 2.313 : :________________________________________________________________ :THREE FORKS 3 NW, MT - JEFFERSON RIVER HSA - TFX :MINOR FLOOD STAGE 8.0 FT FCST ISSUANCE STAGE 7.0 FT :MODERATE FLOOD STAGE 8.5 FT MAJOR FLOOD STAGE 9.0 FT :LATEST RIVER STAGE 4.6 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 4.6 / 4.6 / 4.6 / 4.6 : .ER TFKM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 4.5 / 4.5 / 4.4 .E2 : 0520 : / 4.3 / 4.3 / 4.2 / 4.2 .E3 : 0521 : / 4.1 / 4.1 / 4.1 / 4.1 .E4 : 0522 : / 4.0 / 4.0 / 4.0 / 4.0 .E5 : 0523 : / 4.0 / 4.0 / 4.0 / 3.9 .E6 : 0524 : / 3.9 / 3.9 / 3.9 / 3.9 .E7 : 0525 : / 4.0 / 4.0 / 4.0 / 4.1 .E8 : 0526 : / 4.1 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 15Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.04 / 0.08 : 0521 / 0.05 / 0.02 / 0.00 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.19 inches :THREE FORKS 3 NW, MT - JEFFERSON RIVER HSA - TFX :LATEST RIVER DISCHARGE 2.470 KCFS AT 1400Z ON MAY 19 : .ER TFKM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.587 / 2.516 / 2.411 .E2 : 0520 : / 2.315 / 2.224 / 2.141 / 2.083 .E3 : 0521 : / 2.031 / 1.991 / 1.945 / 1.910 .E4 : 0522 : / 1.888 / 1.868 / 1.852 / 1.845 .E5 : 0523 : / 1.836 / 1.822 / 1.805 / 1.790 .E6 : 0524 : / 1.769 / 1.758 / 1.766 / 1.787 .E7 : 0525 : / 1.820 / 1.857 / 1.897 / 1.957 .E8 : 0526 : / 2.017 : :________________________________________________________________ :GALLATIN GATEWAY 7 S, MT - GALLATIN RIVER HSA - TFX :MINOR FLOOD STAGE 6.0 FT FCST ISSUANCE STAGE 5.0 FT :MODERATE FLOOD STAGE 7.0 FT MAJOR FLOOD STAGE 7.5 FT :LATEST RIVER STAGE 2.5 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 2.7 / 2.6 / 2.6 / 2.6 : .ER GLGM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.5 / 2.5 / 2.4 .E2 : 0520 : / 2.4 / 2.3 / 2.3 / 2.3 .E3 : 0521 : / 2.4 / 2.5 / 2.5 / 2.4 .E4 : 0522 : / 2.4 / 2.4 / 2.4 / 2.4 .E5 : 0523 : / 2.4 / 2.4 / 2.4 / 2.4 .E6 : 0524 : / 2.5 / 2.6 / 2.6 / 2.6 .E7 : 0525 : / 2.7 / 2.7 / 2.7 / 2.7 .E8 : 0526 : / 2.8 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.01 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 15Z is 0.01 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.01 / 0.08 / 0.12 : 0521 / 0.14 / 0.07 / 0.01 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.43 inches :GALLATIN GATEWAY 7 S, MT - GALLATIN RIVER HSA - TFX :LATEST RIVER DISCHARGE 1.220 KCFS AT 1400Z ON MAY 19 : .ER GLGM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 1.271 / 1.222 / 1.177 .E2 : 0520 : / 1.134 / 1.093 / 1.052 / 1.066 .E3 : 0521 : / 1.173 / 1.278 / 1.241 / 1.204 .E4 : 0522 : / 1.188 / 1.181 / 1.178 / 1.171 .E5 : 0523 : / 1.168 / 1.175 / 1.184 / 1.191 .E6 : 0524 : / 1.251 / 1.339 / 1.330 / 1.350 .E7 : 0525 : / 1.458 / 1.520 / 1.480 / 1.480 .E8 : 0526 : / 1.565 : :________________________________________________________________ :LOGAN 1 W, MT - GALLATIN RIVER HSA - TFX :MINOR FLOOD STAGE 9.0 FT FCST ISSUANCE STAGE 8.0 FT :MODERATE FLOOD STAGE 10.0 FT MAJOR FLOOD STAGE 11.0 FT :LATEST RIVER STAGE 5.6 FT AT 1400Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 5.7 / 5.7 / 5.6 / 5.6 : .ER LOGM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 5.5 / 5.5 / 5.4 .E2 : 0520 : / 5.3 / 5.3 / 5.3 / 5.3 .E3 : 0521 : / 5.4 / 5.4 / 5.4 / 5.4 .E4 : 0522 : / 5.5 / 5.4 / 5.4 / 5.3 .E5 : 0523 : / 5.3 / 5.3 / 5.3 / 5.3 .E6 : 0524 : / 5.2 / 5.2 / 5.2 / 5.3 .E7 : 0525 : / 5.3 / 5.3 / 5.3 / 5.4 .E8 : 0526 : / 5.4 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.06 / 0.13 : 0521 / 0.11 / 0.07 / 0.01 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.38 inches :LOGAN 1 W, MT - GALLATIN RIVER HSA - TFX :LATEST RIVER DISCHARGE 1.050 KCFS AT 1400Z ON MAY 19 : .ER LOGM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 1.025 / 0.996 / 0.921 .E2 : 0520 : / 0.875 / 0.818 / 0.826 / 0.887 .E3 : 0521 : / 0.916 / 0.908 / 0.912 / 0.968 .E4 : 0522 : / 0.992 / 0.946 / 0.906 / 0.878 .E5 : 0523 : / 0.857 / 0.837 / 0.823 / 0.834 .E6 : 0524 : / 0.805 / 0.789 / 0.802 / 0.857 .E7 : 0525 : / 0.878 / 0.857 / 0.865 / 0.915 .E8 : 0526 : / 0.913 : :________________________________________________________________ :TOSTON 2 SE, MT - MISSOURI RIVER HSA - TFX :MINOR FLOOD STAGE 10.5 FT FCST ISSUANCE STAGE 8.5 FT :MODERATE FLOOD STAGE 11.0 FT MAJOR FLOOD STAGE 12.0 FT :LATEST RIVER STAGE 4.9 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 5.1 / 5.0 / 5.0 / 5.0 : .ER TOSM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 4.9 / 4.9 / 4.8 .E2 : 0520 : / 4.7 / 4.7 / 4.6 / 4.6 .E3 : 0521 : / 4.5 / 4.5 / 4.5 / 4.5 .E4 : 0522 : / 4.5 / 4.5 / 4.5 / 4.4 .E5 : 0523 : / 4.4 / 4.4 / 4.4 / 4.3 .E6 : 0524 : / 4.3 / 4.3 / 4.3 / 4.3 .E7 : 0525 : / 4.3 / 4.3 / 4.3 / 4.3 .E8 : 0526 : / 4.4 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 15Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.04 / 0.10 : 0521 / 0.10 / 0.04 / 0.01 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.29 inches :TOSTON 2 SE, MT - MISSOURI RIVER HSA - TFX :LATEST RIVER DISCHARGE 4.970 KCFS AT 1400Z ON MAY 19 : .ER TOSM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 4.883 / 4.794 / 4.683 .E2 : 0520 : / 4.532 / 4.380 / 4.241 / 4.161 .E3 : 0521 : / 4.145 / 4.135 / 4.098 / 4.053 .E4 : 0522 : / 4.035 / 4.016 / 3.968 / 3.907 .E5 : 0523 : / 3.853 / 3.808 / 3.767 / 3.726 .E6 : 0524 : / 3.692 / 3.644 / 3.609 / 3.600 .E7 : 0525 : / 3.636 / 3.676 / 3.689 / 3.727 .E8 : 0526 : / 3.793 : :________________________________________________________________ :ULM 6 E, MT - MISSOURI RIVER HSA - TFX :MINOR FLOOD STAGE 13.5 FT FCST ISSUANCE STAGE 11.5 FT :MODERATE FLOOD STAGE 15.0 FT MAJOR FLOOD STAGE 17.0 FT :LATEST RIVER STAGE 3.6 FT AT 1430Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 3.7 / 3.7 / 3.6 / 3.6 : .ER ULMM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.6 / 3.6 / 3.6 .E2 : 0520 : / 3.6 / 3.6 / 3.6 / 3.6 .E3 : 0521 : / 3.6 / 3.7 / 3.7 / 3.7 .E4 : 0522 : / 3.8 / 3.8 / 3.9 / 3.9 .E5 : 0523 : / 3.9 / 4.0 / 4.0 / 4.0 .E6 : 0524 : / 3.9 / 3.9 / 3.9 / 3.8 .E7 : 0525 : / 3.8 / 3.8 / 3.8 / 3.8 .E8 : 0526 : / 3.8 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.01 / 0.00 : 0520 / 0.00 / 0.02 / 0.16 / 0.14 : 0521 / 0.04 / 0.00 / 0.00 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.37 inches :ULM 6 E, MT - MISSOURI RIVER HSA - TFX :LATEST RIVER DISCHARGE 4.120 KCFS AT 1430Z ON MAY 19 : .ER ULMM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.930 / 3.924 / 3.923 .E2 : 0520 : / 3.922 / 3.927 / 3.940 / 3.947 .E3 : 0521 : / 3.963 / 3.989 / 4.023 / 4.065 .E4 : 0522 : / 4.111 / 4.162 / 4.217 / 4.267 .E5 : 0523 : / 4.302 / 4.321 / 4.324 / 4.306 .E6 : 0524 : / 4.273 / 4.247 / 4.211 / 4.188 .E7 : 0525 : / 4.168 / 4.149 / 4.136 / 4.131 .E8 : 0526 : / 4.125 : :________________________________________________________________ :VAUGHN 3 SE, MT - SUN RIVER HSA - TFX :MINOR FLOOD STAGE 6.0 FT FCST ISSUANCE STAGE 5.0 FT :MODERATE FLOOD STAGE 8.0 FT MAJOR FLOOD STAGE 9.0 FT :LATEST RIVER STAGE 3.1 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 3.1 / 3.2 / 3.2 / 3.1 : .ER VAUM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.1 / 3.1 / 3.0 .E2 : 0520 : / 3.0 / 3.0 / 3.1 / 3.1 .E3 : 0521 : / 3.1 / 3.1 / 3.1 / 3.1 .E4 : 0522 : / 3.1 / 3.1 / 3.1 / 3.2 .E5 : 0523 : / 3.2 / 3.3 / 3.4 / 3.4 .E6 : 0524 : / 3.4 / 3.5 / 3.5 / 3.5 .E7 : 0525 : / 3.5 / 3.5 / 3.5 / 3.5 .E8 : 0526 : / 3.5 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 15Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.01 / 0.00 : 0520 / 0.00 / 0.02 / 0.11 / 0.15 : 0521 / 0.03 / 0.00 / 0.00 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.32 inches :VAUGHN 3 SE, MT - SUN RIVER HSA - TFX :LATEST RIVER DISCHARGE 1.400 KCFS AT 1400Z ON MAY 19 : .ER VAUM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 1.263 / 1.218 / 1.175 .E2 : 0520 : / 1.173 / 1.192 / 1.221 / 1.242 .E3 : 0521 : / 1.253 / 1.265 / 1.275 / 1.280 .E4 : 0522 : / 1.292 / 1.312 / 1.352 / 1.423 .E5 : 0523 : / 1.529 / 1.646 / 1.772 / 1.889 .E6 : 0524 : / 1.983 / 2.051 / 2.097 / 2.127 .E7 : 0525 : / 2.144 / 2.152 / 2.148 / 2.150 .E8 : 0526 : / 2.154 : :________________________________________________________________ :FT BENTON, MT - MISSOURI RIVER HSA - TFX :MINOR FLOOD STAGE 13.5 FT FCST ISSUANCE STAGE 12.0 FT :MODERATE FLOOD STAGE 15.0 FT MAJOR FLOOD STAGE 17.0 FT :LATEST RIVER STAGE 2.6 FT AT 1430Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 2.4 / 2.4 / 2.6 / 2.6 : .ER FBNM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.6 / 2.6 / 2.6 .E2 : 0520 : / 2.6 / 2.5 / 2.5 / 2.5 .E3 : 0521 : / 2.5 / 2.5 / 2.5 / 2.5 .E4 : 0522 : / 2.5 / 2.6 / 2.6 / 2.6 .E5 : 0523 : / 2.6 / 2.6 / 2.7 / 2.7 .E6 : 0524 : / 2.7 / 2.8 / 2.8 / 2.8 .E7 : 0525 : / 2.8 / 2.8 / 2.8 / 2.8 .E8 : 0526 : / 2.8 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.03 / 0.01 : 0520 / 0.00 / 0.02 / 0.08 / 0.06 : 0521 / 0.03 / 0.01 / 0.00 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.24 inches :FT BENTON, MT - MISSOURI RIVER HSA - TFX :LATEST RIVER DISCHARGE 6.710 KCFS AT 1430Z ON MAY 19 : .ER FBNM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 6.780 / 6.768 / 6.688 .E2 : 0520 : / 6.525 / 6.390 / 6.322 / 6.298 .E3 : 0521 : / 6.302 / 6.324 / 6.357 / 6.398 .E4 : 0522 : / 6.441 / 6.486 / 6.537 / 6.598 .E5 : 0523 : / 6.672 / 6.762 / 6.867 / 6.980 .E6 : 0524 : / 7.093 / 7.192 / 7.270 / 7.326 .E7 : 0525 : / 7.359 / 7.374 / 7.378 / 7.374 .E8 : 0526 : / 7.366 : :________________________________________________________________ :SHELBY 6 S, MT - MARIAS RIVER HSA - TFX :MINOR FLOOD STAGE 9.0 FT FCST ISSUANCE STAGE 8.0 FT :MODERATE FLOOD STAGE 13.0 FT MAJOR FLOOD STAGE 15.0 FT :LATEST RIVER STAGE 4.4 FT AT 1430Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 4.6 / 4.5 / 4.4 / 4.4 : .ER SHLM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 4.3 / 4.2 / 4.2 .E2 : 0520 : / 4.1 / 4.1 / 4.0 / 4.0 .E3 : 0521 : / 3.9 / 3.9 / 3.9 / 4.0 .E4 : 0522 : / 4.0 / 4.1 / 4.1 / 4.2 .E5 : 0523 : / 4.2 / 4.1 / 4.1 / 4.1 .E6 : 0524 : / 4.0 / 4.0 / 4.0 / 4.0 .E7 : 0525 : / 4.0 / 4.0 / 4.0 / 4.0 .E8 : 0526 : / 4.1 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.03 / 0.03 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.06 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.01 / 0.00 : 0520 / 0.00 / 0.06 / 0.08 / 0.06 : 0521 / 0.01 / 0.00 / 0.00 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.22 inches :SHELBY 6 S, MT - MARIAS RIVER HSA - TFX :LATEST RIVER DISCHARGE 1.350 KCFS AT 1430Z ON MAY 19 : .ER SHLM8 20260519 Z DC202605191541/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 1.341 / 1.275 / 1.217 .E2 : 0520 : / 1.169 / 1.123 / 1.070 / 1.040 .E3 : 0521 : / 1.015 / 1.000 / 1.005 / 1.034 .E4 : 0522 : / 1.080 / 1.140 / 1.182 / 1.199 .E5 : 0523 : / 1.191 / 1.167 / 1.139 / 1.112 .E6 : 0524 : / 1.087 / 1.068 / 1.059 / 1.061 .E7 : 0525 : / 1.067 / 1.075 / 1.086 / 1.098 .E8 : 0526 : / 1.108 : :________________________________________________________________ :LANDUSKY 20 S, MT - MISSOURI RIVER HSA - TFX :MINOR FLOOD STAGE 27.0 FT FCST ISSUANCE STAGE 26.0 FT :MODERATE FLOOD STAGE 29.0 FT MAJOR FLOOD STAGE 33.0 FT :LATEST RIVER STAGE 14.2 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 14.6 / 14.5 / 14.3 / 14.2 : .ER LDKM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 14.1 / 14.1 / 14.0 .E2 : 0520 : / 14.0 / 14.0 / 14.1 / 14.2 .E3 : 0521 : / 14.3 / 14.4 / 14.4 / 14.4 .E4 : 0522 : / 14.4 / 14.3 / 14.3 / 14.3 .E5 : 0523 : / 14.3 / 14.3 / 14.3 / 14.3 .E6 : 0524 : / 14.3 / 14.4 / 14.4 / 14.4 .E7 : 0525 : / 14.4 / 14.5 / 14.5 / 14.5 .E8 : 0526 : / 14.6 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 15Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.01 : 0520 / 0.00 / 0.00 / 0.06 / 0.00 : 0521 / 0.01 / 0.00 / 0.00 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.08 inches :________________________________________________________________ :HARLOWTON 1 SW, MT - MUSSELSHELL RIVER HSA - BYZ :MINOR FLOOD STAGE 7.0 FT FCST ISSUANCE STAGE 5.5 FT :MODERATE FLOOD STAGE Missing MAJOR FLOOD STAGE Missing :LATEST RIVER STAGE 3.4 FT AT 1400Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 3.5 / 3.5 / 3.5 / 3.4 : .ER HLWM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.4 / 3.4 / 3.3 .E2 : 0520 : / 3.3 / 3.3 / 3.3 / 3.3 .E3 : 0521 : / 3.3 / 3.3 / 3.3 / 3.3 .E4 : 0522 : / 3.4 / 3.5 / 3.6 / 3.7 .E5 : 0523 : / 3.7 / 3.7 / 3.7 / 3.7 .E6 : 0524 : / 3.7 / 3.7 / 3.7 / 3.7 .E7 : 0525 : / 3.7 / 3.7 / 3.6 / 3.6 .E8 : 0526 : / 3.6 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.06 / 0.19 : 0521 / 0.17 / 0.05 / 0.02 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.49 inches :________________________________________________________________ :SHAWMUT, MT - MUSSELSHELL RIVER HSA - BYZ :MINOR FLOOD STAGE 8.0 FT FCST ISSUANCE STAGE 6.0 FT :MODERATE FLOOD STAGE Missing MAJOR FLOOD STAGE Missing :LATEST RIVER STAGE 3.7 FT AT 1430Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 3.7 / 3.8 / 3.7 / 3.7 : .ER SHAM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.6 / 3.6 / 3.6 .E2 : 0520 : / 3.6 / 3.5 / 3.5 / 3.5 .E3 : 0521 : / 3.4 / 3.4 / 3.4 / 3.4 .E4 : 0522 : / 3.4 / 3.4 / 3.4 / 3.4 .E5 : 0523 : / 3.4 / 3.5 / 3.6 / 3.8 .E6 : 0524 : / 3.8 / 3.8 / 3.8 / 3.8 .E7 : 0525 : / 3.8 / 3.8 / 3.8 / 3.8 .E8 : 0526 : / 3.8 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.05 / 0.19 : 0521 / 0.19 / 0.05 / 0.02 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.50 inches :________________________________________________________________ :LAVINA 1 S, MT - MUSSELSHELL RIVER HSA - BYZ :MINOR FLOOD STAGE 9.5 FT FCST ISSUANCE STAGE 7.5 FT :MODERATE FLOOD STAGE Missing MAJOR FLOOD STAGE Missing :LATEST RIVER STAGE 2.7 FT AT 1430Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 2.7 / 2.7 / 2.7 / 2.7 : .ER LVNM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.7 / 2.7 / 2.6 .E2 : 0520 : / 2.6 / 2.6 / 2.5 / 2.5 .E3 : 0521 : / 2.5 / 2.5 / 2.4 / 2.4 .E4 : 0522 : / 2.4 / 2.4 / 2.3 / 2.3 .E5 : 0523 : / 2.3 / 2.3 / 2.3 / 2.2 .E6 : 0524 : / 2.2 / 2.3 / 2.3 / 2.4 .E7 : 0525 : / 2.4 / 2.4 / 2.4 / 2.4 .E8 : 0526 : / 2.4 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.01 / 0.00 : 0520 / 0.00 / 0.00 / 0.07 / 0.18 : 0521 / 0.16 / 0.05 / 0.02 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.49 inches :________________________________________________________________ :ROUNDUP 2 SW, MT - MUSSELSHELL RIVER HSA - BYZ :MINOR FLOOD STAGE 10.0 FT FCST ISSUANCE STAGE 8.0 FT :MODERATE FLOOD STAGE 10.5 FT MAJOR FLOOD STAGE 11.0 FT :LATEST RIVER STAGE 2.6 FT AT 1400Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 2.5 / 2.6 / 2.6 / 2.6 : .ER RUPM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.6 / 2.6 / 2.5 .E2 : 0520 : / 2.5 / 2.5 / 2.5 / 2.5 .E3 : 0521 : / 2.4 / 2.4 / 2.4 / 2.3 .E4 : 0522 : / 2.3 / 2.3 / 2.2 / 2.2 .E5 : 0523 : / 2.1 / 2.0 / 2.0 / 2.0 .E6 : 0524 : / 2.0 / 1.9 / 1.9 / 1.9 .E7 : 0525 : / 2.0 / 2.0 / 2.1 / 2.1 .E8 : 0526 : / 2.1 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.07 / 0.14 : 0521 / 0.15 / 0.06 / 0.03 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.45 inches :________________________________________________________________ :MUSSELSHELL, MT - MUSSELSHELL RIVER HSA - BYZ :MINOR FLOOD STAGE 11.0 FT FCST ISSUANCE STAGE 9.0 FT :MODERATE FLOOD STAGE 11.5 FT MAJOR FLOOD STAGE 12.0 FT :LATEST RIVER STAGE 2.7 FT AT 1430Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 2.7 / 2.7 / 2.7 / 2.7 : .ER MUSM8 20260519 Z DC202605191541/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.7 / 2.7 / 2.7 .E2 : 0520 : / 2.7 / 2.7 / 2.7 / 2.7 .E3 : 0521 : / 2.7 / 2.7 / 2.7 / 2.7 .E4 : 0522 : / 2.6 / 2.6 / 2.6 / 2.6 .E5 : 0523 : / 2.4 / 2.4 / 2.4 / 2.4 .E6 : 0524 : / 2.4 / 2.3 / 2.3 / 2.3 .E7 : 0525 : / 2.3 / 2.3 / 2.4 / 2.4 .E8 : 0526 : / 2.5 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.00 / 0.00 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 14Z is 0.00 inches : :Local forecast 6-hr basin-averaged precip(inches) (NEXT 72 hrs): : / 12Z / 18Z / 00Z / 06Z : 0519 / 0.00 / 0.00 / 0.00 : 0520 / 0.00 / 0.00 / 0.06 / 0.10 : 0521 / 0.08 / 0.05 / 0.01 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.30 inches :**************************************************************** :COMMENT : : :HSA - Hydrologic Service Area :WFO - Weather Forecast Office :TFX - NWS WFO Great Falls, Montana :BYZ - NWS WFO Billings, Montana :GGW - NWS WFO Glasgow, Montana :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...