Afternoon storms that lasted into the night, caused by an upper-level disturbance, produced an orphaned outflow boundary (an outflow boundary that is not located near the storm that produced it). The orphaned outflow caused a wind gust of 61 MPH.
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The episode as NWS GLD wrote it up.
Afternoon storms that lasted into the night, caused by an upper-level disturbance, produced an orphaned outflow boundary (an outflow boundary that is not located near the storm that produced it). The orphaned outflow caused a wind gust of 61 MPH. The storms that created the outflow formed in Colorado and then traveled northeast into western Nebraska.
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 Goodland, KS wrote its last area forecast discussion before the first event at May 29, 4:49 PM CST, 5 hours 35 minutes earlier.
Area Forecast Discussion National Weather Service Goodland KS 449 PM MDT Sun May 29 2022 .SHORT TERM...(This evening through Tuesday) Issued at 326 PM MDT Sun May 29 2022 This Afternoon-Tonight... As of 1940Z, the Tri-State area is sitting beneath a surface high, which is pushing the cloud deck observed across the area this morning and the frontal boundary to the east/northeast. Along the Front range, a surface low is surrounding the high to the west and south with rain and thunderstorms moving over the Denver metro to WY state line corridor of I-25. These storms and the low are expected to continue east-northeast and remain mainly north of our forecast area. Should any storms move into Yuma or along the Nebraska border, they are expected to remain mainly sub-severe given the unfavorable amount of MLCAPE and the amount of CIN. Lapse rates and shear are supportive of convection. Over the course of the evening, a few storms could clip south into the area mainly along and north of Hwy 36. Should storms enter the area, hazards include up to 60 mph wind gusts and up to quarter size hail. CAMs have been hinting at a second round of showers and sub- severe storms overnight that could impact areas along and NW of a line from Flagler, CO to McCook, NE. A few downbursts could be possible with any strong updrafts tonight. Overnight lows are forecast to be in the mid 40s to lower 60s. Memorial Day... Cooler temperature are anticipated on Monday with highs in the upper 60s to mid 80s. The trough axis will begin to move over the area tomorrow with the low expected to be around the SD/ND/MN borders and another low developing over the TX/OK Panhandles. A few showers and storms from the overnight hours could continue to the early afternoon hours tomorrow, with severe weather not anticipated given the less than 500 J/kg of MLCAPE. Most of the activity is expected to remain along the Nebraska border, moving northeast. During the late morning, areas south of the interstate are expected to dry out similar to today with RH values as low as 11 percent and westerly winds gusting up to 45 mph. After sunset, winds are expected to shift to be out of the northwest/north-northwest. Given the potential for several hours of critical fire weather conditions, decided to upgrade the Fire Weather Watch for Cheyenne County, Colorado to a Red Flag Warning. Outdoor burning is not advised. Once the rain/storms clear out, dry conditions are anticipated for the remainder of the day. Overnight lows are forecast to fall into the 40s to mid 50s. Tuesday... The area will be under southwest flow aloft as a broad upper trough containing several areas of low pressure rotates over the NW CONUS and into the Upper Midwest. Temperatures are expected to continue cooling off with highs forecast to be in the upper 60s to lower 80s and overnight lows in the 40s to around 50 degrees. Dry conditions are anticipated to stick around during the day, with chances for precipitation and non-severe storms increasing around sunset from west to east into the overnight hours while a shortwave trough swings across the Great Basin. .LONG TERM...(Wednesday through Sunday) Issued at 109 PM MDT Sun May 29 2022 A short wave trough aloft moves out of the central Rockies and over the central High Plains region during the day on Wednesday and east of the region on Thursday. A cooler area of high pressure pressure moves into the region at the surface Wednesday with upslope conditions moistening the lower layers while the short wave aloft assists in producing some embedded showers and thunderstorms. Thursday and Thursday night will remain mostly dry as high pressure pushes further across the Plains states and the Ridge over the Intermountain and Rocky Mountain regions flattens as individual waves approach from the west and diurnally driven convective activity over the Rockies produces vorticity maxes that are carried east over the plains each evening for an active period of showers and warmer temperatures through the end of the upcoming week and into the weekend. The lowest temperatures of this period are on Wednesday with highs in the middle 50s to middle 60s and lows in the upper 30s to middle 40s. by Saturday, highs will be back up into the 80-85 degree range. && .AVIATION...(For the 00Z TAFS through 00Z Monday evening) Issued at 445 PM MDT Sun May 29 2022 VFR conditions are anticipated to prevail through the TAF period.. with ceilings confined to cirrus An isolated thunderstorm cannot be ruled out at the MCK terminal this evening (00-06Z).. though confidence is too low to warrant explicit mention with the current TAF issuance. With widespread convection nearby and upstream of the area (northeast CO and western-central NE).. confidence in wind speed/direction this evening into tonight is well below average. In general, expect winds to become light and variable after sunset.. shifting to the NW/NNW at 10-15 knots after midnight. Winds will back to the W (anywhere from WNW to WSW) several hours after sunrise (~15Z).. increasing to 15-25 knots by late morning and early afternoon. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. CO...Red Flag Warning from 11 AM to 8 PM MDT Monday for COZ254. NE...NONE. && SHORT TERM...KMK LONG TERM...LOCKHART AVIATION...VINCENT
Hazardous Weather Outlook National Weather Service Goodland KS 900 PM MDT Sun May 29 2022 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-310300- Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas- Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock- Red Willow- 900 PM MDT Sun May 29 2022 /1000 PM CDT Sun May 29 2022/ This hazardous weather outlook is for extreme southwest Nebraska... northwest Kansas and east central Colorado. .DAY ONE...THROUGH TONIGHT... Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY... A Red Flag Warning is in effect late Monday morning through sunset Monday evening for Cheyenne County in Colorado. A deepening low pressure system will track north northeastward from western Kansas into central Nebraska on Memorial Day (Monday). Isolated severe thunderstorms are possible, mainly along and north of Interstate 70 between 7 AM and 2 PM MDT. Strong westerly winds will develop over portions of the area late Monday morning into Monday afternoon, as the aforementioned low pressure system lifts northward into Nebraska. Sustained winds ranging from 30 to 45 mph and gusts up to 60 mph are possible. Wind of this magnitude can create hazardous travel conditions, especially if accompanied by blowing dust. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report any severe or significant weather to the National Weather Service in Goodland via social media or telephone. Vincent
Special Weather Statement
National Weather Service Goodland KS
652 PM MDT Sun May 29 2022
KSZ001-002-NEZ079-080-300130-
Rawlins KS-Cheyenne KS-Hitchcock NE-Dundy NE-
652 PM MDT Sun May 29 2022
...Strong north to northwesterly winds will impact portions of
northern Cheyenne and northwestern Rawlins Counties in northwestern
Kansas, and western Hitchcock and Dundy Counties in southwestern
Nebraska through 730 PM MDT/830 PM CDT/...
At 646 PM MDT/746 PM CDT/, strong winds emanating from thunderstorms
in Colorado were progressing eastward into far southwest Nebraska
and far northwest Kansas, along a line extending from 6 miles south
of Enders Reservoir State Recreation Area to 7 miles northeast of
Haigler to 15 miles north of Bonny Reservoir. Movement was east at
45 mph.
HAZARD...Wind gusts up to 50 mph and locally reduced visibilities
associated with blowing dust.
SOURCE...At 539 PM MDT, the automated observation site in Yuma
reported sustained winds of 39 mph gusting to 48 mph with a
visibility reduced to two and a half miles in association
with blowing dust. At 615 PM MDT, the automated observation
site in Wray reported sustained winds at 43 mph and gusts
to 52 mph with a visibility reduced to 5 miles in
association with blowing dust.
IMPACT...Hazardous travel conditions. This includes Highway 34 in
Dundy and Hitchcock counties and areas along and north of
Highway 36 in Cheyenne and Rawlins counties.
Locations impacted include...
Benkelman and Palisade.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4035 10086 4001 10112 3978 10139 3979 10205
3994 10205 4006 10190 4035 10167
TIME...MOT...LOC 0046Z 271DEG 37KT 4034 10157 4006 10182 3984 10216
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
VincentPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
655 PM MDT SUN MAY 29 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0639 PM TSTM WND GST FLAGLER 39.29N 103.07W
05/29/2022 M55 MPH KIT CARSON CO PUBLIC
&&Special Weather Statement
National Weather Service Goodland KS
702 PM MDT Sun May 29 2022
COZ091-092-300145-
Kit Carson County CO-Cheyenne County CO-
702 PM MDT Sun May 29 2022
...Strong northerly winds will impact portions of northwestern
Cheyenne and western Kit Carson Counties in east central Colorado
through 745 PM MDT...
At 659 PM MDT, strong northerly winds emanating from thunderstorms
in Lincoln and Washington counties were progressing southward
through western Kit Carson county, along a line extending from 11
miles north of Vona to near Seibert to 9 miles southwest of Flagler.
Movement was south to southeast at 30 mph.
HAZARD...Wind gusts up to 55 mph and locally reduced visibilities
associated with blowing dust.
SOURCE...An observation site in Flagler, Colorado reported a 55 mph
wind gust at 639 PM MDT.
IMPACT...Hazardous travel conditions. This includes Interstate 70
from Flagler east to Bethune.
Locations impacted include...
Stratton.
This includes Interstate 70 in Colorado between mile markers 390 and
424.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3930 10316 3932 10303 3950 10266 3917 10244
3892 10277 3879 10316
TIME...MOT...LOC 0059Z 331DEG 25KT 3946 10268 3929 10289 3918 10315
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
VincentPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
811 PM MDT SUN MAY 29 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0753 PM NON-TSTM WND GST 5 S BURLINGTON 39.23N 102.28W
05/29/2022 M47 MPH KIT CARSON CO ASOS
THE ASOS IN BURLINGTON, CO (KITR) MEASURED A
NNW WIND GUST OF 47 MPH (41 KNOTS) AT 0153
UTC. WIND GUST ASSOCIATED WITH THE PASSAGE
OF AN ORPHANED OUTFLOW BOUNDARY, I.E.
OUTFLOW THAT PERSISTS WELL AFTER STORMS HAVE
DISSIPATED.
&&
VINCENTSpecial Weather Statement
National Weather Service Goodland KS
823 PM MDT Sun May 29 2022
KSZ013-014-027-028-300315-
Wallace KS-Thomas KS-Logan KS-Sherman KS-
823 PM MDT Sun May 29 2022
...Strong northerly winds will impact portions of Wallace, Thomas,
northwestern Logan and southeastern Sherman Counties through 915 PM
MDT/1015 PM CDT/...
At 816 PM MDT/916 PM CDT/, strong northerly winds emanating from
thunderstorms in Colorado were progressing southeastward into
northwest Kansas, the leading edge of which was situated along a
line extending from 12 miles south of McDonald to 6 miles southwest
of Goodland to 11 miles northeast of Cheyenne Wells. Movement was
southeast at 35 mph.
HAZARD...Wind gusts up to 55 mph and locally reduced visibilities
associated with blowing dust.
SOURCE...The automated observation site in Burlington, Colorado
measured a 47 mph north northwesterly wind gust at 753 PM
MDT. The National Weather Service in Goodland measured
north northwest winds sustained at 37 mph gusting to 49 mph
at 816 PM MDT.
IMPACT...Hazardous travel conditions. This includes Interstate 70
from Kanorado east to Oakley.
Locations impacted include...
Colby.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3870 10205 3913 10205 3920 10196 3957 10147
3956 10091 3929 10073 3870 10153
TIME...MOT...LOC 0216Z 320DEG 28KT 3961 10131 3927 10178 3894 10220
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
VincentPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
828 PM MDT SUN MAY 29 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0816 PM NON-TSTM WND GST 1 NNE GOODLAND 39.37N 101.70W
05/29/2022 M49 MPH SHERMAN KS ASOS
THE ASOS IN GOODLAND, KS (KGLD) MEASURED NNW
WINDS SUSTAINED AT 37 MPH GUSTING TO 49 MPH
AT 0216 UTC. STRONG WINDS WERE ASSOCIATED
WITH THE PASSAGE OF AN ORPHANED OUTFLOW
BOUNDARY, I.E. OUTFLOW THAT PERSISTS WELL
AFTER STORMS HAVE DISSIPATED.
&&
VINCENTThe national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
Station at Hill City airport. Peak southerly gust was at 61 MPH. Strong winds were associated with the passage of an orphaned outflow boundary (Outflow that persisted well after storms have dissipated).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2022Every state in 2022This day in weather historyWarnings in Kansas, May 2022
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: 1026400.