Lightning caused a 10,000 acre 12 miles northwest of Aberdeen on September 5th. It burned grassland in remote areas on Bureau of Land Management property.
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The episode as NWS PIH wrote it up.
Lightning caused a 10,000 acre 12 miles northwest of Aberdeen on September 5th. It burned grassland in remote areas on Bureau of Land Management property. No structures were threatened. Rain stopped a spread of the fire.
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 Sep 5, 12:37 PM MST, 5 hours 23 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 137 PM MDT Thu Sep 5 2019 .DISCUSSION...Tonight through next Thursday. Early afternoon satellite imagery was showing a low pressure trough lifting north along the NW California coast as a veil of sub-tropical moisture continued to stream north through Utah into SE Idaho. Numerical models have keyed in on a little more thunderstorm activity across SE Idaho as a result of the interaction between the ejecting trough and moisture source this evening. Model trends continue to take the ejecting trough further north and west with each forecast cycle late tonight and Friday morning before shearing the wave east along the Canadian border Saturday afternoon. As a result, the best chance for thunderstorm activity appears to be Friday afternoon and evening across the CNTRL and NE mountains. Some of these may be fairly strong with accompanying heavy rain. The trough exits NE of the region late Friday evening with drier conditions working from west to east across the area Friday night. A transient ridge pushes through the area Saturday for dry conditions followed by the next incoming Pacific trough Saturday night through Sunday night. The operational GFS is now showing a somewhat less organized system while the ECMWF is maintaining a fairly deep closed low circulation with abundant precipitation rotating through SE Idaho. A broad upper trough spreads across the region in the wake of the aforementioned exiting low with numerous differing details between the GFS and ECMWF. Have generally allowed the National Blend of Models to drive the forecast sequence here as this is where is performs best. We certainly will see periods of breezy to windy conditions with each passing storm along with cooler temperatures Sunday through next week. Huston && .AVIATION...There will be an increase in showers and thunderstorms in the next 24 hours. We should coverage increase later this evening through tomorrow morning associated with the cold front, this includes possible overnight storms as well. Another round develops behind the front tomorrow as well. With today's storms, initially expect storms producing a brief downpour, small hail and gusts over 40kts. The round tonight could see a better chance of rainfall but not hail or strong winds. With the last round, there is a chance of brief heavy rainfall along with a better chance of hail. In terms of gusts, most will be in the 30-4kt range...but a few gusts might approach 50kts. Keyes && .FIRE WEATHER...The risk of showers and thunderstorms greatly increases over the next 24 hours. Storms through this evening, will be producing sporadic wetting rains...but storms will be more "dry" vs "wet. Coverage will also remain below scattered as well. Other risks with these storms will be small hail and gusts possibly over 40 mph. For tonight and Friday morning, the chance of rain, including rainfall over 0.10" increases with the band associated with a cold front. We will also see isolated coverage of storms through the same period. For tomorrow afternoon and evening, we are expecting a third round. Coverage will increase to at least scattered across most of central and eastern Idaho. We will also the risk of hail and locally heavy rainfall increasing due to the strength of these storms. Wind gusts in most cases will be over 40 mph. Farther east across the Snake Plain and into the highlands along the Wyoming border, even higher gusts are possible. With storms producing wetting rains, the potential for between 0.10-0.20" exists across most zones. In the central mountains, there is the potential for heavier rainfall. That means there could be issues on burn scars. That said, due to the recent long period of dry weather, dry fuels and higher fire weather indices...we are actually issuing FIRE WEATHER WATCHES for all of the central mountain fire zones (422, 475, 476), as well across 425 and 427. The concern is there could be new starts with lightning strikes even outside of the heavier rain cores. Oh, also expect gusty winds tomorrow behind the front outside of thunderstorms. Saturday will be dry and calm weather wise across the area. Another storm is coming in for Sunday. The storm might be moving through a bit quicker now, but expect much cooler weather (dropping 10+ degrees from Saturday) and breezy conditions. The risk of widespread of wetting rains is still there. Cool weather persists next week, with yet another chance of decent rainfall coming Wednesday. Keyes && .PIH WATCHES/WARNINGS/ADVISORIES... Fire Weather Watch Friday afternoon and evening for IDZ422-425- 427-475-476. &&
The national radar mosaic for the moment the first event began.
1 wildfire. Local standard time, as filed.
Lightning caused a 10,000 acre 12 miles northwest of Aberdeen on September 5th. It burned grassland in remote areas on Bureau of Land Management property. No structures were threatened. Rain stopped a spread of the fire.
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, September 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: 857081.