Strong mid level winds mixed to the surface and brought strong winds to the Cody Foothills around the wind prone areas near Clark. At the site 8 miles south-southwest of Clark, several wind gusts past 58 mph were reported including a maximum of 65 mph.
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The episode as NWS RIW wrote it up.
Strong mid level winds mixed to the surface and brought strong winds to the Cody Foothills around the wind prone areas near Clark. At the site 8 miles south-southwest of Clark, several wind gusts past 58 mph were reported including a maximum of 65 mph.
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 Riverton, WY wrote its last area forecast discussion before the first event at Oct 14, 1:58 PM MST, 6 hours 2 minutes earlier.
Area Forecast Discussion National Weather Service Riverton WY 258 PM MDT Sat Oct 14 2017 .SHORT TERM...(This evening through Sunday) Issued at 106 PM MDT Sat Oct 14 2017 Synopsis...Building high pressure, as the trough responsible for this morning's snow quickly exits into the Central Plains. The flow aloft will turn NW over the area through Tuesday, before a more zonal pattern sets up. Discussion...Snow has ended across the forecast area, with skies continuing to clear across Johnson/Natrona. Some CU has developed this afternoon across the west, as well as eastern Sweetwater County. With mainly clear skies expected by sunset, fog will be possible in the Wind River Basin and the western valleys. However, gusty winds near Dubois and along the Cody Foothills are expected to increase this evening. The winds near Dubois will translate down the basin toward Crowheart, with gusts of 45 to 55 mph expected. These winds could be just above the inversion near KRIW from 05-11Z tonight, either helping to erode the inversion away or keep fog from developing altogether. Have left fog in the forecast for now, mainly impacting the low lying areas. The aforementioned winds along the Cody Foothills are also expected to quickly increase after sunset this evening. Wind gusts of 70 to 80 mph will be possible in the favored areas along Highway 120 between Clark and Cody. Chief Joseph Highway has already gusted to 59 mph just before 3pm. The local models depict 40-50kt boundary level winds in this area through 16Z Sunday, before quickly dropping off to 15-25kt by 18Z. Have issued a High Wind Warning for this area. Otherwise, dry and warm conditions are expected through the rest of the period. Model guidance is still too low for high temps Monday and Tuesday and have bumped up accordingly, especially east of the Divide. Elevated fire weather conditions will be possible Tuesday, as gusty SW winds return to the Wind Corridor as well. .LONG TERM...Tuesday night through Saturday night Issued at 106 PM MDT Sat Oct 14 2017 Mean longwave pattern shows us transitioning from a flat ridge overhead to a mean trough along the West Coast by Friday which moves inland some Saturday. Overall, the end result is mild, above normal fall period Wednesday through Friday (except starting to deteriorate far west Friday) before another trough swings through Friday night and Saturday. The far west will likely start to cool Friday, already with increasing clouds and a chance of showers developing. East of the divide, it will remain mild, but with increasing wind. The wind corridor will be quite windy Friday with increase H8-H7 flow and surface low likely developing to the northeast. But temperature-wise, it will remain quite mild. Otherwise, the medium range period starts with a dry Wednesday and Thursday for all areas with highs in the 60s to possibly even some 70s east of the divide (especially by Thursday) with generally 50s to around 60 west of the divide. The high country will see 40s and 50s overall. Ahead of the main trough, we may get a shortwave in the southwest flow riding up on a jet streak. This system may get some light pcpn going in the west during the day Friday. The main trough then swings across on Friday night into Saturday with much cooler/colder temps. Overall, this system doesn't look as cold as the current system (especially central and srn zones) but it's still looks cold enough for some rain/snow or snow showers east of the divide Saturday with a period of snow in the west Friday night/early Saturday before shifting east of the divide. System could lay down some decent snowfall west of the divide, so we'll have to watch this with time. Quick hitter like the current system but could be an intense period of heavy snow. Current thinking is that this system will come through fairly quickly with clearing showing up from west to east Saturday night. The GFS is also showing a rapidly intensifying nw flow Saturday night into next Sunday so some strong west to northwest winds may rapidly follow our Saturday system. The warm advection pattern may also return some snow to the northwest mountains next Saturday night. Until then, though, several mild/warm days for late October! && .AVIATION...(For the 00Z TAFS through 00Z Sunday afternoon) Issued at 106 PM MDT Sat Oct 14 2017 VFR conds will cover the entire area then through Sunday. The one exception to that will be the potential for patchy fog across the low lying areas of the central and the far western valleys from 10-15z Sunday. West to southwest winds will increase along the east slopes of the Divide and along the southern wind corridor, 50SM NE KRKS-KCPR, and between KCOD and Clark after 03z Sunday. The west wind between KCOD and Clark could be in excess of 60 mph with LLWS also possible from 03z through 12z Sunday. && .FIRE WEATHER... Issued AT 106 PM MDT Sat Oct 14 2017 Snow has ended across the area this afternoon, with clearing skies. Winds remain gusty behind the front across western and southern portions. Strong winds are expected to quickly develop this evening, along the Cody Foothills to the Upper Wind River Basin and continue through late Sunday morning. These winds are expected to quickly diminish by the noon hour. High pressure will then bring dry and mild weather starting Sunday and lasting into much of next week. A gusty wind will blow at times across the areas favored by southwest flow, mainly from Rock Springs through Casper. Elevated fire conditions will be possible at times, especially Tuesday. && .RIW WATCHES/WARNINGS/ADVISORIES... High Wind Warning from 9 PM this evening to 10 AM MDT Sunday for WYZ003. && SHORT TERM...LaVoie LONG TERM...Skrbac AVIATION...Skrbac FIRE WEATHER...LaVoie
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</html>Special Weather Statement National Weather Service Riverton WY 317 PM MDT Sat Oct 14 2017 WYZ016-142330- Upper Wind River Basin- Including the city of Dubois 317 PM MDT Sat Oct 14 2017 ...Strong Gusty Winds to quickly develop this evening... Gusty winds this afternoon will continue near Dubois, increasing after sunset and spreading southeastward toward Crowheart. West- northwest winds 35 to 45 mph with gusts up to 55 mph will occur through the overnight hours, before quickly subsiding before the noon hour Sunday.
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</html>The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
The wind sensor 8 miles south-southwest of Clark recorded a maximum wind gust of 65 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2017Every state in 2017This day in weather historyWarnings in Wyoming, October 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 2026-10-01. Each event’s entry at NCEI: 721831.