138
FGUS63 KKRF 271511
ESPUMO
HYDROLOGIC ENSEMBLE FORECAST SERVICE
NATIONAL WEATHER SERVICE
MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO
1511Z WED MAY 27 2026
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**** THESE ARE 10 DAY FORECASTS PRODUCED WITH HEFS ****
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HYDROLOGIC ENSEMBLE FORECAST SERVICE (HEFS) PROBABILITIES
ARE DISPLAYED IN THE TABLE BELOW. THE TABLE LISTS THE FLOOD
CATEGORIES AND PROBABILITY OF EXCEEDING EACH CATEGORY IN THE
NEXT 10 DAYS.
-- UPPER MISSOURI FORECAST GROUP --
ISSUANCE MINOR MODERATE MAJOR
STG PROB STG PROB STG PROB STG PROB
:BIG HOLE R AT MELROSE MT
MLRM8 (TFX) 5.0 <5% 6.0 <5% 7.5 <5% 8.0 <5%
:BEAVERHEAD R AT TWIN BRIDGES MT
TWNM8 (TFX) 6.0 <5% 7.0 <5% 8.0 <5% 9.0 <5%
:JEFFERSON R AT TWIN BRIDGES MT 5N
TWIM8 (TFX) 9.0 <5% 10.0 <5% 11.0 <5% 12.0 <5%
:JEFFERSON R AT THREE FORKS MT 3NW
TFKM8 (TFX) 7.0 <5% 8.0 <5% 8.5 <5% 9.0 <5%
:GALLATIN R AT GALLATIN GTWY MT 7S
GLGM8 (TFX) 5.0 <5% 6.0 <5% 7.0 <5% 7.5 <5%
:GALLATIN R AT LOGAN MT 1W
LOGM8 (TFX) 8.0 9% 9.0 5% 10.0 <5% 11.0 <5%
:MISSOURI R AT TOSTON MT
TOSM8 (TFX) 8.5 <5% 10.5 <5% 11.0 <5% 12.0 <5%
:DEARBORN R AT CRAIG MT 11NW
DBRM8 (TFX) 5.5 <5% 6.5 <5% 8.0 <5% 11.0 <5%
:SMITH R AT ULM MT 8SE
ULLM8 (TFX) 8.0 <5% 9.0 <5% 12.0 <5% 15.0 <5%
:MISSOURI R AT ULM MT 6E
ULMM8 (TFX) 11.5 <5% 13.5 <5% 15.0 <5% 17.0 <5%
:SUN R AT SIMMS MT 1N
SSRM8 (TFX) 6.0 <5% 7.5 <5% 8.5 <5% 10.5 <5%
:MUDDY CR AT VAUGHN MT
MDYM8 (TFX) 11.0 <5% 12.0 <5% 16.0 <5% 25.0 <5%
:SUN R AT VAUGHN MT 3SE
VAUM8 (TFX) 5.0 <5% 6.0 <5% 8.0 <5% 9.0 <5%
:MISSOURI R AT FT BENTON MT
FBNM8 (TFX) 12.0 <5% 13.5 <5% 15.0 <5% 17.0 <5%
:TETON R AT DUTTON MT 10NE
DTTM8 (TFX) 8.0 <5% 9.0 <5% NA -- NA --
:MARIAS R AT SHELBY 6S
SHLM8 (TFX) 8.0 9% 9.0 <5% 13.0 <5% 15.0 <5%
:MISSOURI R AT LANDUSKY MT 20S
LDKM8 (TFX) 26.0 <5% 27.0 <5% 29.0 <5% 33.0 <5%
:MUSSELSHELL R AT HARLOWTON MT 1SW
HLWM8 (BYZ) 5.5 <5% 7.0 <5% NA -- NA --
:MUSSELSHELL R AT SHAWMUT MT
SHAM8 (BYZ) 6.0 <5% 8.0 <5% NA -- NA --
:MUSSELSHELL R AT LAVINA MT 1S
LVNM8 (BYZ) 7.5 <5% 9.5 <5% NA -- NA --
:MUSSELSHELL R AT ROUNDUP MT 2SW
RUPM8 (BYZ) 8.0 <5% 10.0 <5% 10.5 <5% 11.0 <5%
:MUSSELSHELL R AT MUSSELSHELL MT
MUSM8 (BYZ) 9.0 <5% 11.0 <5% 11.5 <5% 12.0 <5%
:MUSSELSHELL R AT MOSBY MT
MSBM8 (GGW) 8.0 <5% 10.0 <5% 12.0 <5% 14.0 <5%
:END OF MESSAGE
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