A slow-moving supercell thunderstorm moved east across northern Yuma County, producing hail measured as large as 3 inches in diameter.
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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 GLD wrote it up.
A slow-moving supercell thunderstorm moved east across northern Yuma County, producing hail measured as large as 3 inches in diameter.
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 Jun 17, 4:33 PM MST, 1 hour 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 533 PM MDT WED JUN 17 2009 .SYNOPSIS... 204 PM MDT WED JUN 17 2009 ANALYSIS OF WATER VAPOR IMAGERY/UPPER AIR DATA INDICATES BROAD MID/UPPER TROUGH OVER THE WESTERN CONUS. 90KT JET STREAK CURRENTLY EJECTING FROM THE BASE OF THE TROUGH AND APPROACHING THE CWA AS A SHORTWAVE TROUGH BEGINS TO IMPACT THE REGION. SURFACE ANALYSIS SHOWS A WARM FRONT DRAPED GENERALLY ALONG THE KS/NE BORDER. MUCH OF THE CWA REMAINS SOUTH OF THE WARM FRONT IN THE WARM SECTOR. ATMOSPHERE OVER THE WARM SECTOR SIGNIFICANTLY CAPPED WITH H7 TEMPS APPROACHING 15C. FOLTZ && .DISCUSSION... 204 PM MDT WED JUN 17 2009 MAIN FOCUS IN THE NEAR TERM WILL BE ON POTENTIAL FOR CONVECTIVE ACTIVITY OVER THE NORTHERN ZONES THIS EVENING FOLLOWED BY FROPA THURSDAY AND ADDITIONAL PRECIP CHANCES OVER THE WEEKEND. 19Z MESOANALYSIS INDICATES WARM FRONT STRETCHING FROM IMPERIAL TO JUST MCCOOK. PARAMETERS ARE HIGHLY FAVORABLE FOR SUPERCELL THUNDERSTORMS WITH EFFECTIVE 0-6KM SHEAR IN EXCESS OF 50KTS. 0-1KM SHEAR IS WEAK AT THE MOMENT BUT PROGGED TO INCREASE AS THE LLJ BEGINS TO RAMP UP THIS EVENING. WITH SBCAPE VALUES IN EXCESS OF 5000 J/KG...VERY LARGE HAIL WILL BE A DISTINCT POSSIBILITY. CERTAINLY CANT RULE OUT ISOLATED TORNADOES...PARTICULARLY ALONG AND NORTH OF THE WARM FRONT. MAIN QUESTION FOR THIS EVENING WILL BE SOUTHERN EXTENT OF CONVECTIVE ACTIVITY. BOTH THE NAM AND GFS BREAK OUT QPF OVER SOUTHWEST KANSAS BY 03Z SO INSERTED SLIGHT CHANCE POPS OVER THE SOUTHEAST PORTION OF THE CWA. CONVECTIVE ACTIVITY SHOULD COME TO AN END ACROSS THE REGION AROUND 06Z. FOCUS THEN SHIFTS TO FROPA THURSDAY NIGHT/FRIDAY MORNING. NAM IS ABOUT 3 HORUS FASTER AS COMPARED TO THE GFS. EC IS SIMILAR IN TIMING AS THE GFS SO WILL GENERALLY FOLLOW THIS SOLUTION. BRIEF WINDOW FOR POST-FRONTAL ELEVATED CONVECTION AND HAVE CHANCE POPS OVER THE NORTH. BUFKIT POINT SOUNDINGS INDICATE GENERALLY WEAK DEEP LAYER SHEAR SO ANTICIPATING LITTLE MORE THAN MODERATE TO HEAVY RAIN FROM THESE STORMS. MEAN LONGWAVE TROUGH OVER THE WESTERN CONUS CONTINUES INTO SATURDAY WITH ANOTHER SHORTWAVE TROUGH MAKING ITS WAY INTO THE CENTRAL HIGH PLAINS. WITH BROAD MID/UPPER RIDGE OVER THE CENTRAL GULF OF MEXICO WILL AID IN MOISTURE TRANSPORT INTO THE REGION. HAVE INSERTED LOW SLIGHT CHANCE POPS GIVEN REASONABLE CONTINUITY IN DETERMINISTIC NUMERICAL GUIDANCE. MID/UPPER RIDGE OVER THE GULF COAST WILL BEGIN TO EXPAND NORTHWARD BY EARLY NEXT WEEK ALLOWING TEMPS TO REACH THE LOW 90S ONCE AGAIN. FOLTZ && .AVIATION... 532 PM MDT WED JUN 17 2009 FOR THE 00Z TAF CYCLE...VFR CONDITIONS WILL GENERALLY PREVAIL, BUT CONVECTION CURRENTLY FORMING TO THE WEST AND SOUTHWEST MAY IMPACT EITHER TERMINAL THIS EVENING RESULTING IN INTERMITTENT MVFR/IFR CIGS AND/OR VIS..PARTICULARLY AT KMCK. BOTH TERMINALS SHOULD BE DONE WITH THUNDERSTORM ACTIVITY BY ABOUT 06Z, BUT ANOTHER CHANCE OF THUNDERSTORMS EXISTS AT BOTH SITES JUST OUTSIDE THIS TAF VALID PERIOD TOMORROW EVENING. GJG && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. NE...NONE. CO...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GOODLAND KS 1027 AM MDT WED JUN 17 2009 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-181645- YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON- SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA- DUNDY-HITCHCOCK-RED WILLOW- 1027 AM MDT WED JUN 17 2009 /1127 AM CDT WED JUN 17 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST NEBRASKA...NORTHWEST KANSAS AND EAST CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT ISOLATED TO SCATTERED THUNDERSTORMS WILL DEVELOP NORTH OF INTERSTATE 70 THIS AFTERNOON AND EVENING. A FEW OF THESE STORMS MAY BECOME SEVERE MAINLY NORTH OF U.S. HIGHWAY 36 ACROSS FAR NORTHEAST COLORADO, SOUTHWEST NEBRASKA AND NORTHWEST KANSAS NEAR THE NEBRASKA BORDER. THE MAIN THREAT WITH THESE STORMS WILL BE LARGE HAIL. HEAVY RAINFALL IS ALSO POSSIBLE WITH THE STRONGER STORMS. ANY AREAS RECEIVING HEAVY RAINFALL HAVE THE POTENTIAL FOR FLASH FLOODING DUE TO THE RAINFALL ALREADY RECEIVED DURING THE PAST SEVERAL DAYS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY ADDITIONAL CHANCES FOR THUNDERSTORMS WILL ARRIVE LATE THURSDAY AS A COLD FRONT MOVES OVER THE REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING.
The Goodland radar (KGLD), 129 km away, was scanning. The volume nearest the first event began at 00:50 UTC.
3 hail. Local standard time, as filed.
Several reports by storm chasers and storm spotters of large hail occurring over a 22 minute period north of Yuma. Hail sizes ranged from 1.75 and 2.50 up to 3.75. Several reports received via The Spotter Network.
Most hailstones were 1.0 to 1.5 inches in diameter, but largest was 2.5 inches.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2009Every state in 2009This day in weather historyWarnings in Colorado, June 2009
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: 169934, 169936, 169937.