On August 9th a mud slide occurred one mile past the east fort of Baker Creek. Warm Springs Road was impassable from the west of the Hot Springs in Ketchum.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PIH wrote it up.
On August 9th a mud slide occurred one mile past the east fort of Baker Creek. Warm Springs Road was impassable from the west of the Hot Springs in Ketchum. 3 to 5 inches of mud covered the road.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pocatello, ID wrote its last area forecast discussion before the first event at Aug 9, 12:29 PM MST, 2 hours 31 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 129 PM MDT Fri Aug 9 2019 .DISCUSSION...Tonight through next Friday. Early afternoon satellite imagery was showing weak convection over the CNTRL mountains in the wake of an ejecting disturbance currently lifting NNE through the panhandle. Further destabilization this afternoon will likely result in isolated to scattered thunderstorm activity. Further south and west, a second broader disturbance was ejecting from the coastal low which is expected to reach Boise sometime around 6 PM with attending thunderstorm activity translating north and east into the CNTRL mountains and Eastern Magic Valley area. Convective debris and weak showers will likely shift east through the Snake Plain and NE mountains late tonight. By Saturday afternoon, the low moves into SW Oregon with a dry SSW flow spreading north into the Snake Plain and SE mountains through the day and strong dynamical support for enhanced thunderstorm activity overspreading WRN Idaho and perhaps the western portion of the CNTRL mountains. The low lifts further north and east into NW Montana by Sunday with attending showers and thunderstorms shifting north into WRN Montana Sunday evening. A dry and breezy west flow overspreads the region in the wake of the exiting low Monday through Wednesday. With the passing low and westerly flow, winds are expected to remain below advisory criteria Saturday through Wednesday. By Thursday, the next Pacific low settles into the NW coast. Run to run placement of the low has varied considerably with associated weather impacts varying from clear skies to a chance of showers. Huston && .AVIATION...A chance for lowered VIS will exist in association with quick moving TS this evening. Confidence in TS on station is low with the best chances at DIJ this afternoon. VFR conditions are otherwise anticipated. Winds should be below 15 kts outside of outflow winds and gusts associated with thunderstorm activity. Expect shifting directions after midnight. NP && .FIRE WEATHER...Scattered thunderstorms will exist across mountainous terrain through early tomorrow morning with favored areas across 475 and 476 and perhaps portions of 427 as well during this time period. Moisture content in the storms may very well provide decent wetting rains of 30 to 40 percent this evening. There will be a brief break around sunrise tomorrow morning before convection begins again late tomorrow morning across 475 alongside a cold front with storms then tracking slightly southeastward into 476 through the day. Substantially higher wetting rains are forecast tomorrow into the 70+ percentages. Severe weather is also more probable, with hail and damaging winds the result in addition to the heavy rain. As a result of the scattered nature of the thunderstorms and all the parameters listed above during this extended period of time we will go forward with a Red Flag Warning from late this afternoon through Saturday evening. Outflow from the storms may impact the northern portions of 410 and 411. Gusty winds with abrupt changes in wind direction can be expected in and near any thunderstorm activity. The southern half of Idaho is expected to remain dry and unaffected by these thunderstorms; however, strong southerly winds are expected to develop over 413, 427 and 410 ahead of the frontal boundary. Border line critical fire weather conditions are noted in these areas as a result for Saturday afternoon and early evening and fire starts are possible from the dry and windy conditions. Sunday and Monday look to bring increased moisture to the region with little to no fire weather concerns before drier conditions redevelop into the region Tuesday, along with some windier conditions. NP && .PIH WATCHES/WARNINGS/ADVISORIES... Red Flag Warning for scattered thunderstorms 3 PM this afternoon to 9 PM Saturday evening IDZ475-476. &&
The national radar mosaic for the moment the first event began.
1 debris flow. Local standard time, as filed.
On August 9th a mud slide occurred one mile past the east fort of Baker Creek. Warm Springs Road was impassable from the west of the Hot Springs in Ketchum. 3 to 5 inches of mud covered the road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2019Every state in 2019This day in weather historyWarnings in Idaho, August 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 848655.