FGUS53 KKRF 191610 RVFYEL RIVER FORECAST NWS MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO 1610Z 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 YELLOW : ************************************************************** : *** 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 :________________________________________________________________ :CORWIN SPRINGS, MT - YELLOWSTONE RIVER HSA - BYZ :MINOR FLOOD STAGE 11.0 FT FCST ISSUANCE STAGE 9.5 FT :MODERATE FLOOD STAGE 12.0 FT MAJOR FLOOD STAGE 13.0 FT :LATEST RIVER STAGE 4.1 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 4.3 / 4.2 / 4.2 / 4.1 : .ER CORM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 4.0 / 4.0 / 3.9 .E2 : 0520 : / 3.8 / 3.7 / 3.7 / 3.7 .E3 : 0521 : / 3.7 / 3.7 / 3.7 / 3.8 .E4 : 0522 : / 3.9 / 3.9 / 3.9 / 3.9 .E5 : 0523 : / 4.0 / 4.0 / 4.0 / 4.0 .E6 : 0524 : / 4.6 / 4.1 / 3.8 / 4.0 .E7 : 0525 : / 4.7 / 5.0 / 4.5 / 4.8 .E8 : 0526 : / 5.6 :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 / 0.00 : 0520 / 0.00 / 0.01 / 0.08 / 0.07 : 0521 / 0.16 / 0.07 / 0.01 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.40 inches :CORWIN SPRINGS, MT - YELLOWSTONE RIVER HSA - BYZ :LATEST RIVER DISCHARGE 5.410 KCFS AT 1500Z ON MAY 19 : .ER CORM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 5.193 / 5.035 / 4.872 .E2 : 0520 : / 4.727 / 4.607 / 4.494 / 4.572 .E3 : 0521 : / 4.573 / 4.615 / 4.567 / 4.674 .E4 : 0522 : / 4.841 / 4.878 / 4.865 / 4.992 .E5 : 0523 : / 5.175 / 5.188 / 5.157 / 5.210 .E6 : 0524 : / 6.401 / 5.427 / 4.721 / 5.155 .E7 : 0525 : / 6.675 / 7.220 / 6.282 / 6.859 .E8 : 0526 : / 8.881 : :________________________________________________________________ :LIVINGSTON 5 S, MT - YELLOWSTONE 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 3.8 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 4.0 / 3.9 / 3.8 / 3.8 : .ER LIVM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.7 / 3.7 / 3.6 .E2 : 0520 : / 3.5 / 3.5 / 3.4 / 3.4 .E3 : 0521 : / 3.5 / 3.5 / 3.4 / 3.4 .E4 : 0522 : / 3.5 / 3.5 / 3.5 / 3.5 .E5 : 0523 : / 3.6 / 3.6 / 3.6 / 3.6 .E6 : 0524 : / 3.7 / 4.0 / 3.8 / 3.6 .E7 : 0525 : / 3.6 / 4.0 / 4.2 / 4.1 .E8 : 0526 : / 4.2 :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 / 0.08 / 0.17 : 0521 / 0.16 / 0.09 / 0.01 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.51 inches :LIVINGSTON 5 S, MT - YELLOWSTONE RIVER HSA - BYZ :LATEST RIVER DISCHARGE 6.240 KCFS AT 1500Z ON MAY 19 : .ER LIVM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 5.907 / 5.732 / 5.567 .E2 : 0520 : / 5.398 / 5.244 / 5.111 / 4.988 .E3 : 0521 : / 5.267 / 5.183 / 5.160 / 5.134 .E4 : 0522 : / 5.189 / 5.317 / 5.384 / 5.392 .E5 : 0523 : / 5.468 / 5.645 / 5.692 / 5.682 .E6 : 0524 : / 5.719 / 6.572 / 6.140 / 5.517 .E7 : 0525 : / 5.616 / 6.730 / 7.451 / 7.009 .E8 : 0526 : / 7.271 : :________________________________________________________________ :LIVINGSTON 7 NE, MT - SHIELDS RIVER HSA - BYZ :MINOR FLOOD STAGE 5.5 FT FCST ISSUANCE STAGE 4.5 FT :MODERATE FLOOD STAGE Missing MAJOR FLOOD STAGE Missing :LATEST RIVER STAGE 1.5 FT AT 1415Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 1.6 / 1.5 / 1.5 / 1.5 : .ER SLDM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 1.4 / 1.4 / 1.4 .E2 : 0520 : / 1.4 / 1.5 / 1.4 / 1.4 .E3 : 0521 : / 1.6 / 1.9 / 1.6 / 1.6 .E4 : 0522 : / 1.6 / 1.6 / 1.6 / 1.6 .E5 : 0523 : / 1.7 / 1.7 / 1.6 / 1.6 .E6 : 0524 : / 1.6 / 1.6 / 1.6 / 1.6 .E7 : 0525 : / 1.6 / 1.6 / 1.6 / 1.6 .E8 : 0526 : / 1.6 :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 / 0.03 / 0.19 : 0521 / 0.17 / 0.06 / 0.02 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.47 inches :LIVINGSTON 7 NE, MT - SHIELDS RIVER HSA - BYZ :LATEST RIVER DISCHARGE 0.248 KCFS AT 1515Z ON MAY 19 : .ER SLDM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 0.242 / 0.231 / 0.225 .E2 : 0520 : / 0.221 / 0.262 / 0.236 / 0.239 .E3 : 0521 : / 0.340 / 0.439 / 0.344 / 0.332 .E4 : 0522 : / 0.329 / 0.348 / 0.345 / 0.328 .E5 : 0523 : / 0.377 / 0.357 / 0.345 / 0.330 .E6 : 0524 : / 0.324 / 0.330 / 0.331 / 0.320 .E7 : 0525 : / 0.321 / 0.330 / 0.330 / 0.322 .E8 : 0526 : / 0.327 : :________________________________________________________________ :BIG TIMBER 1 E, MT - BOULDER RIVER HSA - BYZ :MINOR FLOOD STAGE 8.0 FT FCST ISSUANCE STAGE 6.5 FT :MODERATE FLOOD STAGE Missing MAJOR FLOOD STAGE Missing :LATEST RIVER STAGE 2.6 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 2.7 / 2.7 / 2.7 / 2.7 : .ER BTMM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.6 / 2.5 / 2.5 .E2 : 0520 : / 2.4 / 2.3 / 2.3 / 2.3 .E3 : 0521 : / 2.3 / 2.3 / 2.4 / 2.5 .E4 : 0522 : / 2.6 / 2.7 / 2.7 / 2.7 .E5 : 0523 : / 2.6 / 2.6 / 2.7 / 2.7 .E6 : 0524 : / 2.7 / 2.8 / 2.8 / 2.8 .E7 : 0525 : / 2.8 / 3.0 / 3.0 / 2.9 .E8 : 0526 : / 3.0 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.01 / 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 / 0.25 : 0521 / 0.33 / 0.21 / 0.03 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.91 inches :BIG TIMBER 1 E, MT - BOULDER RIVER HSA - BYZ :LATEST RIVER DISCHARGE 0.749 KCFS AT 1500Z ON MAY 19 : .ER BTMM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 0.730 / 0.693 / 0.650 .E2 : 0520 : / 0.607 / 0.582 / 0.563 / 0.546 .E3 : 0521 : / 0.538 / 0.547 / 0.618 / 0.686 .E4 : 0522 : / 0.750 / 0.788 / 0.797 / 0.792 .E5 : 0523 : / 0.769 / 0.751 / 0.794 / 0.794 .E6 : 0524 : / 0.792 / 0.886 / 0.896 / 0.851 .E7 : 0525 : / 0.896 / 1.004 / 1.027 / 1.003 .E8 : 0526 : / 1.032 : :________________________________________________________________ :ABSAROKEE 1 NE, MT - STILLWATER RIVER HSA - BYZ :MINOR FLOOD STAGE 7.5 FT FCST ISSUANCE STAGE 6.0 FT :MODERATE FLOOD STAGE 8.0 FT MAJOR FLOOD STAGE 9.0 FT :LATEST RIVER STAGE 2.3 FT AT 1515Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 2.5 / 2.4 / 2.4 / 2.4 : .ER SRAM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 2.3 / 2.3 / 2.2 .E2 : 0520 : / 2.2 / 2.1 / 2.1 / 2.1 .E3 : 0521 : / 2.2 / 2.2 / 2.3 / 2.3 .E4 : 0522 : / 2.3 / 2.3 / 2.2 / 2.2 .E5 : 0523 : / 2.2 / 2.2 / 2.2 / 2.1 .E6 : 0524 : / 2.2 / 2.2 / 2.2 / 2.3 .E7 : 0525 : / 2.4 / 2.4 / 2.5 / 2.5 .E8 : 0526 : / 2.6 :Local observed 6-hr basin-averaged precip(inches) (PAST 24 hrs): : / 18Z / 00Z / 06Z / 12Z : 0518 / 0.00 / 0.02 / 0.01 / 0.00 : :Local observed 24-hr basin-averaged precip total : QPE Total Ending May 19 at 15Z is 0.03 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 / 0.13 / 0.25 : 0521 / 0.36 / 0.30 / 0.05 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 1.09 inches :ABSAROKEE 1 NE, MT - STILLWATER RIVER HSA - BYZ :LATEST RIVER DISCHARGE 0.902 KCFS AT 1515Z ON MAY 19 : .ER SRAM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 0.838 / 0.801 / 0.767 .E2 : 0520 : / 0.740 / 0.716 / 0.692 / 0.675 .E3 : 0521 : / 0.740 / 0.786 / 0.800 / 0.805 .E4 : 0522 : / 0.804 / 0.800 / 0.783 / 0.755 .E5 : 0523 : / 0.745 / 0.735 / 0.719 / 0.689 .E6 : 0524 : / 0.718 / 0.761 / 0.794 / 0.833 .E7 : 0525 : / 0.885 / 0.933 / 0.977 / 1.025 .E8 : 0526 : / 1.087 : :________________________________________________________________ :BELFRY 10 SW, MT - CLARKS YELLOWSTONE RIVER HSA - BYZ :MINOR FLOOD STAGE 9.0 FT FCST ISSUANCE STAGE 7.5 FT :MODERATE FLOOD STAGE 10.0 FT MAJOR FLOOD STAGE 11.5 FT :LATEST RIVER STAGE 3.1 FT AT 1600Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 3.4 / 3.3 / 3.2 / 3.1 : .ER BFYM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.1 / 3.0 / 2.9 .E2 : 0520 : / 2.8 / 2.9 / 2.7 / 2.7 .E3 : 0521 : / 3.2 / 3.2 / 3.1 / 3.0 .E4 : 0522 : / 3.6 / 3.4 / 3.2 / 3.2 .E5 : 0523 : / 3.8 / 3.6 / 3.4 / 3.4 .E6 : 0524 : / 4.0 / 3.8 / 3.6 / 3.6 .E7 : 0525 : / 4.2 / 4.3 / 4.1 / 4.0 .E8 : 0526 : / 4.7 :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 16Z 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 / 0.07 : 0521 / 0.13 / 0.19 / 0.04 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.49 inches :BELFRY 10 SW, MT - CLARKS YELLOWSTONE RIVER HSA - BYZ :LATEST RIVER DISCHARGE 1.930 KCFS AT 1500Z ON MAY 19 : .ER BFYM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 1.776 / 1.695 / 1.607 .E2 : 0520 : / 1.514 / 1.591 / 1.442 / 1.403 .E3 : 0521 : / 1.970 / 1.986 / 1.803 / 1.753 .E4 : 0522 : / 2.439 / 2.193 / 1.984 / 1.921 .E5 : 0523 : / 2.673 / 2.455 / 2.221 / 2.151 .E6 : 0524 : / 2.993 / 2.737 / 2.477 / 2.398 .E7 : 0525 : / 3.337 / 3.394 / 3.071 / 2.974 .E8 : 0526 : / 4.137 : :________________________________________________________________ :EDGAR, MT - CLARKS YELLOWSTONE RIVER HSA - BYZ :MINOR FLOOD STAGE 9.0 FT FCST ISSUANCE STAGE 7.5 FT :MODERATE FLOOD STAGE 10.0 FT MAJOR FLOOD STAGE 11.5 FT :LATEST RIVER STAGE 4.0 FT AT 1530Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 4.3 / 4.3 / 4.1 / 4.0 : .ER EDGM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 4.0 / 3.9 / 3.7 .E2 : 0520 : / 3.7 / 3.6 / 3.5 / 3.5 .E3 : 0521 : / 3.4 / 3.5 / 3.9 / 3.9 .E4 : 0522 : / 3.7 / 3.8 / 4.2 / 4.0 .E5 : 0523 : / 3.9 / 4.0 / 4.4 / 4.2 .E6 : 0524 : / 4.0 / 4.1 / 4.6 / 4.4 .E7 : 0525 : / 4.2 / 4.3 / 4.9 / 4.9 .E8 : 0526 : / 4.7 :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 / 0.09 : 0521 / 0.14 / 0.23 / 0.05 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.55 inches :EDGAR, MT - CLARKS YELLOWSTONE RIVER HSA - BYZ :LATEST RIVER DISCHARGE 1.890 KCFS AT 1530Z ON MAY 19 : .ER EDGM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 1.767 / 1.691 / 1.603 .E2 : 0520 : / 1.531 / 1.455 / 1.403 / 1.421 .E3 : 0521 : / 1.315 / 1.378 / 1.730 / 1.703 .E4 : 0522 : / 1.574 / 1.650 / 2.032 / 1.837 .E5 : 0523 : / 1.690 / 1.769 / 2.197 / 2.015 .E6 : 0524 : / 1.851 / 1.941 / 2.419 / 2.215 .E7 : 0525 : / 2.039 / 2.145 / 2.741 / 2.723 .E8 : 0526 : / 2.505 : :________________________________________________________________ :BILLINGS 1 NE, MT - YELLOWSTONE RIVER HSA - BYZ :MINOR FLOOD STAGE 13.5 FT FCST ISSUANCE STAGE 11.5 FT :MODERATE FLOOD STAGE 14.5 FT MAJOR FLOOD STAGE 15.0 FT :LATEST RIVER STAGE 5.2 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 5.5 / 5.4 / 5.3 / 5.2 : .ER BILM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 5.1 / 5.0 / 4.9 .E2 : 0520 : / 4.7 / 4.6 / 4.5 / 4.4 .E3 : 0521 : / 4.4 / 4.3 / 4.2 / 4.3 .E4 : 0522 : / 4.4 / 4.4 / 4.3 / 4.4 .E5 : 0523 : / 4.4 / 4.4 / 4.4 / 4.4 .E6 : 0524 : / 4.4 / 4.4 / 4.5 / 4.5 .E7 : 0525 : / 4.7 / 4.7 / 4.6 / 4.6 .E8 : 0526 : / 4.9 :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 / 0.05 / 0.21 : 0521 / 0.27 / 0.18 / 0.04 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.75 inches :BILLINGS 1 NE, MT - YELLOWSTONE RIVER HSA - BYZ :LATEST RIVER DISCHARGE 10.300 KCFS AT 1500Z ON MAY 19 : .ER BILM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 9.571 / 9.142 / 8.761 .E2 : 0520 : / 8.410 / 8.056 / 7.675 / 7.317 .E3 : 0521 : / 7.217 / 7.099 / 6.886 / 7.067 .E4 : 0522 : / 7.248 / 7.200 / 7.061 / 7.204 .E5 : 0523 : / 7.269 / 7.306 / 7.233 / 7.384 .E6 : 0524 : / 7.468 / 7.462 / 7.520 / 7.704 .E7 : 0525 : / 8.146 / 8.322 / 7.886 / 7.980 .E8 : 0526 : / 8.823 : :________________________________________________________________ :FORSYTH, MT - YELLOWSTONE RIVER HSA - BYZ :MINOR FLOOD STAGE 14.0 FT FCST ISSUANCE STAGE 12.0 FT :MODERATE FLOOD STAGE Missing MAJOR FLOOD STAGE Missing :LATEST RIVER STAGE 3.7 FT AT 1545Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 4.0 / 4.0 / 3.9 / 3.8 : .ER FRYM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 3.7 / 3.6 / 3.5 .E2 : 0520 : / 3.4 / 3.3 / 3.2 / 3.1 .E3 : 0521 : / 3.1 / 3.0 / 2.9 / 2.8 .E4 : 0522 : / 2.7 / 2.7 / 2.7 / 2.7 .E5 : 0523 : / 2.7 / 2.7 / 2.7 / 2.7 .E6 : 0524 : / 2.7 / 2.7 / 2.7 / 2.7 .E7 : 0525 : / 2.7 / 2.8 / 2.8 / 2.8 .E8 : 0526 : / 2.9 :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 / 0.02 / 0.07 : 0521 / 0.05 / 0.04 / 0.01 / 0.00 : 0522 / 0.00 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.19 inches :FORSYTH, MT - YELLOWSTONE RIVER HSA - BYZ :LATEST RIVER DISCHARGE 14.600 KCFS AT 1445Z ON MAY 19 : .ER FRYM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 14.086 / 13.631 / 13.139 .E2 : 0520 : / 12.607 / 12.042 / 11.512 / 11.049 .E3 : 0521 : / 10.621 / 10.203 / 9.809 / 9.476 .E4 : 0522 : / 9.247 / 9.100 / 9.005 / 9.014 .E5 : 0523 : / 9.069 / 9.106 / 9.086 / 9.105 .E6 : 0524 : / 9.143 / 9.154 / 9.149 / 9.178 .E7 : 0525 : / 9.229 / 9.272 / 9.360 / 9.536 .E8 : 0526 : / 9.756 : :________________________________________________________________ :MILES CITY 1 NW, MT - YELLOWSTONE RIVER HSA - BYZ :MINOR FLOOD STAGE 14.0 FT FCST ISSUANCE STAGE 12.0 FT :MODERATE FLOOD STAGE Missing MAJOR FLOOD STAGE Missing :LATEST RIVER STAGE 5.3 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 5.5 / 5.4 / 5.4 / 5.3 : .ER MILM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 5.2 / 5.2 / 5.1 .E2 : 0520 : / 5.0 / 4.9 / 4.8 / 4.7 .E3 : 0521 : / 4.6 / 4.5 / 4.4 / 4.3 .E4 : 0522 : / 4.2 / 4.1 / 4.1 / 4.0 .E5 : 0523 : / 4.0 / 4.0 / 4.0 / 4.0 .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 / 0.00 / 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 / 0.02 / 0.05 : 0521 / 0.04 / 0.03 / 0.01 / 0.00 : 0522 / 0.01 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.16 inches :MILES CITY 1 NW, MT - YELLOWSTONE RIVER HSA - BYZ :LATEST RIVER DISCHARGE 14.700 KCFS AT 1500Z ON MAY 19 : .ER MILM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 14.518 / 14.127 / 13.695 .E2 : 0520 : / 13.273 / 12.827 / 12.353 / 11.849 .E3 : 0521 : / 11.361 / 10.922 / 10.525 / 10.153 .E4 : 0522 : / 9.775 / 9.445 / 9.196 / 9.025 .E5 : 0523 : / 8.913 / 8.887 / 8.918 / 8.956 .E6 : 0524 : / 8.956 / 8.967 / 8.993 / 9.008 .E7 : 0525 : / 9.007 / 9.024 / 9.061 / 9.101 .E8 : 0526 : / 9.171 : :________________________________________________________________ :GLENDIVE 1 E, MT - YELLOWSTONE RIVER HSA - GGW :MINOR FLOOD STAGE 53.5 FT FCST ISSUANCE STAGE 51.5 FT :MODERATE FLOOD STAGE 60.0 FT MAJOR FLOOD STAGE 65.0 FT :LATEST RIVER STAGE 45.2 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 45.5 / 45.4 / 45.4 / 45.3 : .ER GLNM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 45.2 / 45.1 / 45.1 .E2 : 0520 : / 45.0 / 44.9 / 44.9 / 44.8 .E3 : 0521 : / 44.7 / 44.6 / 44.5 / 44.5 .E4 : 0522 : / 44.4 / 44.3 / 44.3 / 44.2 .E5 : 0523 : / 44.1 / 44.1 / 44.0 / 44.0 .E6 : 0524 : / 44.0 / 44.0 / 44.0 / 44.0 .E7 : 0525 : / 44.0 / 44.0 / 44.0 / 44.0 .E8 : 0526 : / 44.0 :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 / 0.00 / 0.01 / 0.01 : 0521 / 0.01 / 0.03 / 0.01 / 0.03 : 0522 / 0.02 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.12 inches :GLENDIVE 1 E, MT - YELLOWSTONE RIVER HSA - GGW :LATEST RIVER DISCHARGE 16.300 KCFS AT 1500Z ON MAY 19 : .ER GLNM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 16.007 / 15.568 / 15.173 .E2 : 0520 : / 14.768 / 14.324 / 13.848 / 13.354 .E3 : 0521 : / 12.842 / 12.370 / 11.892 / 11.431 .E4 : 0522 : / 11.000 / 10.601 / 10.227 / 9.884 .E5 : 0523 : / 9.587 / 9.353 / 9.191 / 9.100 .E6 : 0524 : / 9.068 / 9.076 / 9.097 / 9.115 .E7 : 0525 : / 9.131 / 9.147 / 9.162 / 9.175 .E8 : 0526 : / 9.194 : :________________________________________________________________ :SIDNEY 2 S, MT - YELLOWSTONE RIVER HSA - GGW :MINOR FLOOD STAGE 19.0 FT FCST ISSUANCE STAGE 17.0 FT :MODERATE FLOOD STAGE 20.0 FT MAJOR FLOOD STAGE 21.7 FT :LATEST RIVER STAGE 6.3 FT AT 1500Z ON MAY 19 :obs Stage / 18Z / 00Z / 06Z / 12Z : 0518 / 6.8 / 6.6 / 6.5 / 6.3 : .ER SIDM8 20260519 Z DC202605191610/DH18/HGIFFZZ/DIH6 :Stage Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 6.2 / 6.1 / 6.0 .E2 : 0520 : / 5.8 / 5.7 / 5.6 / 5.5 .E3 : 0521 : / 5.4 / 5.2 / 5.1 / 4.9 .E4 : 0522 : / 4.8 / 4.6 / 4.5 / 4.4 .E5 : 0523 : / 4.2 / 4.1 / 4.0 / 3.9 .E6 : 0524 : / 3.8 / 3.8 / 3.8 / 3.8 .E7 : 0525 : / 3.7 / 3.7 / 3.7 / 3.7 .E8 : 0526 : / 3.7 :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 / 0.02 / 0.00 : 0521 / 0.00 / 0.02 / 0.01 / 0.02 : 0522 / 0.01 : :Local forecast 72-hr basin-averaged precip total : QPF Total Ending May 22 0.08 inches :SIDNEY 2 S, MT - YELLOWSTONE RIVER HSA - GGW :LATEST RIVER DISCHARGE 16.500 KCFS AT 1500Z ON MAY 19 : .ER SIDM8 20260519 Z DC202605191610/DH18/QRIFFZZ/DIH6 :Flow Fcst / 12Z / 18Z / 00Z / 06Z .E1 : 0519 : / 16.046 / 15.487 / 14.982 .E2 : 0520 : / 14.525 / 14.110 / 13.709 / 13.274 .E3 : 0521 : / 12.822 / 12.351 / 11.863 / 11.386 .E4 : 0522 : / 10.916 / 10.466 / 10.032 / 9.626 .E5 : 0523 : / 9.242 / 8.890 / 8.594 / 8.352 .E6 : 0524 : / 8.157 / 8.036 / 7.984 / 7.953 .E7 : 0525 : / 7.921 / 7.917 / 7.876 / 7.873 .E8 : 0526 : / 7.859 : :**************************************************************** :COMMENT : : :HSA - Hydrologic Service Area :WFO - Weather Forecast Office :RIW - NWS WFO Riverton, Wyoming :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 gks :...END of MESSAGE...