1 hail, as filed by the National Weather Service.
Every event with a place to put it. 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 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 May 31, 9:05 AM MST, 3 hours 33 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 1005 AM MDT WED MAY 31 2006 .DISCUSSION...THE AREA OF SHOWERS AND THUNDERSTORMS CONTINUES TO MOVE EAST AT MID MORNING OVER MAINLY THE NORTHERN NEBRASKA PANHANDLE. A PERIOD OF HEAVY RAIN AND SMALL HAIL HAS OCCURRED THIS MORNING WITH THE STRONGER STORMS. THE ACTIVITY SEEMS TO BE NEAR THE RIGHT ENTRANCE REGION OF THE 300 MB JET JUST AHEAD OF THE SHORTWAVE TROUGH. IT APPEARS THAT THE STRONGER STORMS WILL REDEVELOP OVER OR NEAR THE SOUTHERN LARAMIE RANGE THIS AFTERNOON AND THEN SPREAS EAST. BEST BUOYANCY AND LAPSE RATES LOOK TO BE IN THE SOUTHERN PANHANDLE THIS AFTERNOON AND EVENING. WILL KEEP MENTION OF SEVERE IN THAT AREA IN A RECENT FORECAST UPDATE. && .PREVIOUS DISCUSSION (ISSUED AT 315 AM MDT MAY 31 2006) SHORT TERM...A SHORT WAVE WILL MOVE ACROSS THE CWA TODAY AND WILL BE EAST OF THE AREA BY 00Z THUR. NW FLOW WILL OCCUR ALOFT TONIGHT AS AN UPPER RIDGE BUILDS TO THE WEST OF THE FORECAST AREA. A PIECE OF ENERGY WILL MOVE ACROSS THE CWA IN THE NORTHWEST FLOW THIS EVENING. NW FLOW WILL CONT THUR AS THE UPPER RIDGE AXIS MOVES TO THE WESTERN PORTION OF THE CWA. MID LEVEL MOISTURE WILL BE PRESENT OVER THE AREA THIS AFTERNOON AND EVENING. LIS WILL BE FROM -2 TO -4 EAST OF THE LARAMIE RANGE THIS AFTERNOON AND EARLY EVENING WITH CAPE VALUES FROM 700 TO 800 J/KG. 500 MB WIND SPEEDS AT THIS TIME WILL BE FROM 30 TO 40 KTS IN THIS AREA. AGREE WITH SPC DAY ONE OUTLOOK AND WILL MENTION A CHANCE OF SEVERE STORMS...MAINLY IN EXTREME EASTERN WY AND THE NEB PANHANDLE THIS AFTERNOON AND EARLY EVENING. FOR THURSDAY...THUNDERSTORMS WILL BE LIMITED TO THE EXTREME SOUTHERN PORTION OF THE FORECAST AREA. HIGH TEMPERATURES TODAY WILL BE AROUND NORMAL AND AROUND 10 DEGREES ABOVE NORMAL FOR THURSDAY. LONG TERM...THURSDAY NIGHT THROUGH TUESDAY...AFTER A FEW EARLY EVENING TSTMS OVER SE PART OF CWA THU EVENING...A WARM AND DRY FORECAST REMAINS ON TAP INTO EARLY NEXT WEEK WITH STRONG UPPER RIDGE DOMINATING. A WEAK COLD FRONT DOES COME INTO PLAY EVENTUALLY. NAM IS FASTER IN SWEEPING MORE UPPER ENERGY ACROSS SOUTHWEST CANADA AND THUS IN BRINGING THIS COLD FRONT IN BY SUNDAY. GFS IS SLOWER WITH THE MAIN COOLING HOLDING OFF UNTIL LATE MONDAY AND TUESDAY. WENT WITH A COMPROMISE FOR NOW. ULTIMATELY...THERE MAY END UP BEING ENOUGH OF A COOL PUSH TO INCLUDE A FEW TSTMS EARLY NEXT WEEK BUT WILL CONTINUE TO LEAVE OUT FOR NOW. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...NONE. NE...NONE. && WEILAND
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1031 AM MDT WED MAY 31 2006 WYZ064>067-069-011645- NORTH LARAMIE RANGE-LARAMIE VALLEY-LARAMIE RANGE-PLATTE- CHEYENNE FOOTHILLS- 1031 AM MDT WED MAY 31 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP IN THE EARLY TO MID AFTERNOON NEAR THE MOUNTAINS AND THEN MOVE EAST. THE ATMOSPHERE BECOMES MARGINALLY UNSTABLE IN THE AFTERNOON AND EVENING AND THE TAIL END OF A DISTURBANCE MOVES OVER SOUTHEAST WYOMING. THOSE FACTORS SHOULD ALLOW FOR THE DEVELOPMENT OF THE STORMS. THE STILL FAIRLY COOLER SURFACE TEMPERATURES AND EXISTING CLOUD COVER WILL LIMIT THE INTENSITY OF THE THUNDERSTORMS. FROM MID AFTERNOON THROUGH THE EARLY EVENING...SMALL HAIL...A PERIOD OF MODERATE RAIN... LIGHTNING AND GUSTY WINDS CAN BE EXPECTED. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS A SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS MAINLY ALONG AND SOUTH OF I-80 ON THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. NEZ001>003-WYZ068-011645- SIOUX-DAWES-BOX BUTTE-GOSHEN- 1031 AM MDT WED MAY 31 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS OVER THIS AREA THIS MORNING HAVE PRODUCED SMALL HAIL. THE STORMS WILL CONTINUE TO MOVE EAST THROUGH EARLY THIS AFTERNOON. SOME STORMS WILL REDEVELOP BY MID AFTERNOON. THE ATMOSPHERE BECOMES MARGINALLY UNSTABLE IN THE AFTERNOON AND EVENING OVER SOUTHEAST WYOMING AND THE NORTHERN NEBRASKA PANHANDLE. THE STILL FAIRLY COOLER SURFACE TEMPERATURES AND EXISTING CLOUD COVER WILL LIMIT THE INTENSITY OF THOSE THUNDERSTORMS. FROM MID AFTERNOON THROUGH THE EARLY EVENING... SMALL HAIL...A PERIOD OF MODERATE RAIN... LIGHTNING AND GUSTY WINDS CAN BE EXPECTED. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. WYZ059>063-011645- CONVERSE-NIOBRARA-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE- 1031 AM MDT WED MAY 31 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT A FEW THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND CONTINUE INTO THE EARLY EVENING HOURS. THESE ARE EXPECTED TO REMAIN QUITE WEAK. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS A SLIGHT CHANCE OF THUNDERSTORMS THURSDAY AFTERNOON AND EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. NEZ019>021-054-055-WYZ070-011645- SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-PINE BLUFFS- 1031 AM MDT WED MAY 31 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL MOVE INTO THE SOUTHERN NEBRASKA PANHANDLE IN THE MID TO LATE AFTERNOON HOURS AND THEN MOVE EAST. THE ATMOSPHERE BECOMES UNSTABLE IN THE AFTERNOON AND EVENING AND THE TAIL END OF A DISTURBANCE MOVES OVER SOUTHEAST WYOMING AND THE SOUTHERN NEBRASKA PANHANDLE. THE STILL FAIRLY COOLER SURFACE TEMPERATURES WILL LIMIT THE INTENSITY OF THE THUNDERSTORMS. HOWEVER...NEAR THE COLORADO BORDER...SOME OF THE STORMS WILL BECOME STRONG ENOUGH TO PRODUCE HAIL TO ONE INCH IN DIAMETER... WIND GUSTS TO 60 MPH...DANGEROUS LIGHTNING AND A PERIOD OF MODERATE RAINFALL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS A SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS MAINLY ALONG AND SOUTH OF I-80 ON THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED BY MID AFTERNOON AND THROUGH THE EVENING ESPECIALLY SOUTH OG INTERSTATE 80. WEILAND
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1243 PM MDT WED MAY 31 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1236 PM HAIL 20 W CHEYENNE 41.14N 105.18W
05/31/2006 M0.75 INCH LARAMIE WY TRAINED SPOTTER
&&
MWEILANDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
121 PM MDT WED MAY 31 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0104 PM HAIL 17 W CHEYENNE 41.14N 105.12W
05/31/2006 M0.88 INCH LARAMIE WY TRAINED SPOTTER
&&
MWEILANDThe Cheyenne radar (KCYS), 4 km away, was scanning. The volume nearest the first event began at 19:37 UTC.
1 hail. Local standard time, as filed.
Mostly 3/4 to 1 inch diameter hail reported along a swath from just west to southwestof Cheyenne, WY.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2006Every state in 2006This day in weather historyWarnings in Wyoming, May 2006
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: 5505912.