The Black Knoll Wildfire began on the 21st just north of Saint Anthony and grew to 443 acres before being contained.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 PIH wrote it up.
The Black Knoll Wildfire began on the 21st just north of Saint Anthony and grew to 443 acres before being contained.
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 Jun 21, 12:21 PM MST, 3 hours 39 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 121 PM MDT Mon Jun 21 2021 .SHORT TERM...Tonight through Wednesday night. Strong high pressure is building back into the Great Basin while low pressure circulates off the California coast. We will remain dry through tonight, but the ridge axis is expected to swing into Idaho tomorrow while temperatures approach 100 degrees. We'll be looking at a heat advisory for tomorrow for the Eastern Magic Valley as a result. Isolated thunderstorms will likely develop in the Central Mountains tomorrow afternoon/evening. With a continued influx of moisture from the south, Wednesday afternoon/evening may see thunderstorm coverage expand across the rest of southeast Idaho. This will bring Wednesday's highs down a few degrees. Overall, precipitation totals will be unimpressive, though some areas could see brief heavy rainfall--as it the nature of summertime convection. Hinsberger .LONG TERM...Thursday through Monday. Remnants of upper trough continue Thursday with convection across higher terrain. As trough shifts east, expect a few thunderstorms to redevelop Friday along the Wyoming border. Beyond that, blocking upper ridge rebuilds along the coastal states into Saturday, gradually shifting center into Idaho by mid week. There is very strong agreement among ensemble clusters, so confidence is high that dry and abnormally hot conditions will redevelop by midweek for East Idaho. HeatRisk calculations are already giving very strong signals for potential extended multi-day heat event. Of greater concern is the number of ensemble members within a degree plus/minus of tying all-time record high, and the number of days in a row that this type of heat will be possible. To say that this is the concern for the extended range is an understatement. DMH && .AVIATION...VFR conditions continue under the influence of strong upper ridge. Expect terrain driven winds, mixing out to prevailing southwest for the Snake Plain zones during the afternoon. DMH && .FIRE WEATHER...High pressure is in control through tonight and tomorrow, with high temperatures tomorrow approaching 100 degrees. We'll see very dry conditions, but winds should be light enough to allay any critical fire weather concerns. Isolated thunderstorms are expected to develop in the Central Mountains tomorrow afternoon as ridging passes to the east. The thunderstorm threat expands to the rest of southeast Idaho on Wednesday, and most zones will see isolated coverage in the afternoon and evening. Humidities will get a bit of a bump due to the influx of moisture from the south, though some valley locations could see RH drop below 15 percent. Humidity will drop over the weekend as high pressure rebuilds into the region as temperatures climb back into triple digits early next week. Hinsberger && .PIH WATCHES/WARNINGS/ADVISORIES... Heat Advisory from 11 AM to 9 PM MDT Tuesday for IDZ051-055. &&
The national radar mosaic for the moment the first event began.
1 wildfire. Local standard time, as filed.
The Black Knoll Wildfire began on the 21st just north of Saint Anthony and grew to 443 acres before being contained.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2021Every state in 2021This day in weather historyWarnings in Idaho, June 2021
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: 965370.