Rainfall and snow melt combined to increase the flow on the Weiser River to minor flood stage.
Every event with a place to put it. Tap one for its entry below.
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 BOI wrote it up.
Rainfall and snow melt combined to increase the flow on the Weiser River to minor flood stage.
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 Boise, ID wrote its last area forecast discussion before the first event at Mar 8, 3:13 AM MST, 5 hours 47 minutes earlier.
Area Forecast Discussion National Weather Service Boise ID 313 AM MST Wed Mar 8 2017 .SHORT TERM...Today through Thursday...Strong, moist, westerly flow aloft will continue over the area through Thursday. Precip will continue over the mountains, especially west facing slopes, throughout the period. A slight increase in moisture Wednesday night and early Thursday will help to overcome mountain downslope effects, and thus the precip chances for valley locations are highest during this period. Snow levels will continue to rise slowly, from about 5000-6000 ft MSL today, to 6000-7000 ft MSL on Thursday. Surface temperatures will be 5 to 10 degrees above normal. Snowmelt will continue to be of the most concern, see Hydrology section below. .LONG TERM...Thursday night through Wednesday...A system moving through Friday brings ample moisture and precipitation to the West Central and Boise Mountains. Snow levels sit right around 7000 feet MSL on this day so most of the precipitation will fall as rain. Heavy runoff and melting snow means concerns for flooding potential. Ridging builds back into the area by Saturday morning with temperatures climbing into the upper 50's for valley locations. Things remain dry until Sunday when disturbances begin to pass through the flow. Most of the precipitation stays in the northern portions of the CWA. Slight chances of precipitation remain for extreme northern zones through Tuesday morning. Models are in disagreement on timing of a disturbance towards the end of the period. The ECMWF wants to bring in a small wave Tuesday while the GFS holds off until Wednesday. Temperatures remain above normal for this time of year throughout the period with some models suggesting highs in the low 60's for valley locations by the end of the period. && .AVIATION...Mostly VFR. Showers continue to push through the area and will continue through the morning and into Thursday, especially in the West Central and Boise Mountains. Snow levels sit right around 5k feet MSL through Wednesday night then climb above 6k feet. Surface winds, southerly 10-30 kts. Winds aloft to 10k feet MSL, westerly 30-45 kts. && .HYDROLOGY...A flood warning will continue until further notice for the Boise River below Lucky Peak Dam, where controlled releases have the river slightly above flood stage. Elsewhere, small streams and rivers started rising on Tuesday with the first batch of rainfall and warmer temperatures, and are expected to rise again each day this week as warmer temperatures, westerly winds, and significant precip (with rainfall below about 6000 feet MSL) contribute to significant snowmelt. Rivers such as the Weiser, Malheur, and Payette - and all smaller creeks and streams - will continue to be monitored closely to determine the amount of snowmelt and precip that turns into runoff, which could easily lead to flooding issues later in the week. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && www.weather.gov/Boise www.facebook.com/NWSBoise www.twitter.com/NWSBoise SHORT TERM...TB LONG TERM....JC AVIATION.....JC HYDROLOGY...TB
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Flooding occurred along the Weiser River from Cambridge to Weiser and surrounding fields and roads.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2017Every state in 2017This day in weather historyWarnings in Idaho, March 2017
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: 697174.