Thunderstorms produced torrential rainfall over a short period of time, with flash flooding reported in southwest Kimball County.
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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 CYS wrote it up.
Thunderstorms produced torrential rainfall over a short period of time, with flash flooding reported in southwest Kimball County.
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 Cheyenne, WY wrote its last area forecast discussion before the first event at Jun 30, 4:49 PM MST, 1 hour 25 minutes earlier.
Area Forecast Discussion National Weather Service Cheyenne WY 549 PM MDT THU JUN 30 2016 .SHORT TERM...(This evening through Saturday) Issued at 300 PM MDT Thu Jun 30 2016 .Short term... Tonight...At mid afternoon, we currently have isolated to scattered showers and thunderstorms across our counties. Precipitable water values this morning ranged from 120 to 170 percent of normal. NAM depicts a slow moving shortwave moving east across southern Wyoming overnight with deep moist low and mid level upslope southeast winds advecting deep moisture into southeast Wyoming and western Nebraska. Meanwhile, looking at the mid levels around 700 mb, we are seeing moderate to strong warm air advection looking at the winds blowing perpendicular to the impressive 700 mb theta-e ridge axis. With this in mind, expect scattered to numerous showers to develop overnight, with best areal coverage over southern Albany and Laramie counties of Wyoming and over the southern Nebraska panhandle. Based on slow movement of storms, some storms may produce locally heavy rain and possible flooding. Also, please see Mesoscale Precipitation Discussion 399 issued at 158 pm MDT from the Weather Prediction Center discussing the possibility of flash flooding. Where rain is less prevalent, patchy areas of fog will form. Thank you to NWS Denver/Boulder for their coordination on expected rainfall event tonight and Friday. Since we have not yet had widespread heavy rain the past few days, have decided to hold off for now on a flash flood watch, and have briefed our evening shift team who can see if and where showers and thunderstorms develop to assess the best location for a possible flash flood watch. Friday...Slow moving shortwave moves east across eastern Wyoming, and with a nearly saturated airmass in place over our eastern counties, expect numerous showers and scattered thunderstorms producing locally heavy rain due to slow movement of storms. Lesser POPS further west where the atmosphere is less moist and lift will be less prevalent. Lowered maximum temperatures from Laramie to Cheyenne to Kimball and Sidney, under guidance, where low clouds and rain will hamper warming significantly. Friday night...With the shortwave moving further east of our counties, lift will gradually wane with decreasing low and mid level moisture, thus most rain chances ending from west to east. Saturday...Shortwave ridging develops over western Wyoming. With a more stable airmass in place, much of our eastern counties should be shower and thunderstorm free in the afternoon. However, looks like enough low and mid level moisture along a theta-e ridge over our western counties for a chance of afternoon showers and thunderstorms. .LONG TERM...(Saturday night through Thursday) Issued at 300 PM MDT Thu Jun 30 2016 A warmer and drier weather pattern expected to set up over the CWA this period as the upper high over the southern Rocky Mtns weakens and drifts a little southeast. The stronger westerlies currently along the US/Canadian border will sink a bit to the south turning the flow over the CWA more westerly. This will shunt the monsoonal moisture south of the CWA by early next week while the surface flow becomes more westerly as well. This will bring warmer weather for next week and keep convection more isolated in nature...and primarily early in the period. && .AVIATION...(For the 00Z TAFS through 00Z Friday evening) Issued at 546 PM MDT Thu Jun 30 2016 Scattered to numerous showers and thunderstorms are likely through the TAF period. Heavier showers could yield periods of MVFR or IFR ceilings/visibilities. Otherwise, expect VFR conditions during the early evening with ceilings lowering. IFR conditions may occur for KCYS after 06z, with spotty MVFR conditions elsewhere. && .FIRE WEATHER... Issued at 300 PM MDT Thu Jun 30 2016 Minimal concerns through the weekend due to expected widespread rain, relatively high humidities and light winds. Concerns increasing again for the July 4th through Thursday period as temperatures warm, humidities fall and winds increase somewhat. && .CYS Watches/Warnings/Advisories... WY...None. NE...None. && SHORT TERM...RUBIN LONG TERM...RE AVIATION...CLH FIRE WEATHER...RUBIN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1102 AM MDT THU JUN 30 2016 NEZ019>021-054-055-WYZ106>108-115>119-011130- SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-LARAMIE VALLEY- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY- 1102 AM MDT THU JUN 30 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF PANHANDLE NEBRASKA AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING OVER SOUTHEAST ALBANY COUNTY...FAR SOUTHERN PLATTE COUNTY...SOUTHERN GOSHEN COUNTY...LARAMIE COUNTY AND THE SOUTHERN NEBRASKA PANHANDLE SOUTH OF A SCOTTSBLUFF TO BRIDGEPORT LINE. ANOTHER ROUND OF SCATTERED AFTERNOON AND EVENING THUNDERSTORMS CAN BE EXPECTED ACROSS SOUTHEAST WYOMING. SOME OF THESE THUNDERSTORMS WILL LIKELY PRODUCE TORRENTIAL RAIN WHICH MAY LEAD TO LOCALIZED FLOODING OR FLASH FLOODING ACROSS ALBANY...LARAMIE...PLATTE AND GOSHEN COUNTIES. A FEW STORMS WILL PRODUCE SMALL HAIL AND WIND GUSTS TO 50 MPH. AFTER MIDNIGHT...SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE...ESPECIALLY FROM ALBANY COUNTY OF WYOMING...ACROSS PLATTE...GOSHEN AND LARAMIE COUNTIES OF WYOMING...AND OVER THE SOUTHERN NEBRASKA PANHANDLE COUNTIES SOUTH OF A SCOTTSBLUFF TO ALLIANCE LINE. SOME OF THE STORMS TONIGHT...ESPECIALLY FROM LARAMIE TO CHEYENNE...TO KIMBALL AND TO SIDNEY...MAY PRODUCE LOCALLY HEAVY RAIN AND POSSIBLE FLOODING OR FLASH FLOODING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ON FRIDAY...NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS WILL OCCUR OVER THE NEBRASKA PANHANDLE...WITH THE HEAVIEST RAINFALL LIKELY OVER THE SOUTHERN NEBRASKA PANHANDLE SOUTH OF A SCOTTSBLUFF TO ALLIANCE LINE. SCATTERED AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE THROUGH SUNDAY. THE THREAT FOR SEVERE STORMS WILL DECREASE THROUGH THE HOLIDAY WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND THIS EVENING. NEZ002-003-095-096-WYZ101>105-109>114-011130- DAWES-BOX BUTTE-NORTH SIOUX-SOUTH SIOUX- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS- SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE- UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- 1102 AM MDT THU JUN 30 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF PANHANDLE NEBRASKA...EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL OCCUR THIS AFTERNOON AND EVENING. PATCHY FOG WILL BE POSSIBLE LATE TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS WILL AFFECT THE NORTHERN NEBRASKA PANHANDLE LATER TONIGHT...WITH LESSER CHANCES FOR SHOWERS AND THUNDERSTORMS ACROSS SOUTHEAST WYOMING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS WILL AFFECT THE NORTHERN NEBRASKA PANHANDLE ON FRIDAY...WITH LOCALLY HEAVY RAINFALL POSSIBLE FROM SOME OF THE STORMS...POSSIBLY PRODUCING LOCALIZED FLOODING OR FLASH FLOODING. ISOLATED AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE ACROSS PARTS OF THE AREA THROUGH SUNDAY. THE THREAT FOR SEVERE STORMS WILL DECREASE THROUGH THE HOLIDAY WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. RUBIN
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
653 PM MDT THU JUN 30 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0652 PM HEAVY RAIN 6 S BUSHNELL 41.15N 103.89W
06/30/2016 M1.51 INCH KIMBALL NE TRAINED SPOTTER
DRAW THAT RUNS BY HIS HOUSE IS RUNNING HIGH BUT NOT
FLOODED YET.
&&
GCLAYCOMThe Cheyenne radar (KCYS), 77 km away, was scanning. The volume nearest the first event began at 01:13 UTC.
1 flash flood. Local standard time, as filed.
One to two inches of rain in an hour produced flash flooding. County officials reported several county roads flooded south of Bushnell.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2016Every state in 2016This day in weather historyWarnings in Nebraska, June 2016
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: 641941.