A man suffered minor injuries when the tree he took shelter under was struck by lightning. He was jogging at City Park Golf Course when the incident occurred.
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The episode as NWS BOU wrote it up.
A man suffered minor injuries when the tree he took shelter under was struck by lightning. He was jogging at City Park Golf Course when the incident occurred. The jogger was taken to the hospital for observation.
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 Denver/Boulder, CO wrote its last area forecast discussion before the first event at May 12, 1:56 PM MST, 1 hour 59 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER/BOULDER CO 256 PM MDT TUE MAY 12 2015 .SHORT TERM...(THIS EVENING THROUGH WEDNESDAY) ISSUED AT 256 PM MDT TUE MAY 12 2015 AIRMASS IS BECOMING UNSTABLE ALONG THE FRONT RANGE AND NEAR BY EASTERN PLAINS WHERE CAPES ARE UP TO 1000 J/KG. SHOWERS AND STORMS HAVE BEEN SLOW TO FORM OVER THE HIGHER TERRAIN WHERE DEW POINTS ARE IN THE 20S. THE HRRR AND RAP CONTINUE TO SHOW ISOLATED TO SCATTERED CONVECTION LATER THIS AFTERNOON. AS THESE STORMS MOVE OFF THE HIGHER TERRAIN...THEY WILL ENCOUNTER GREATER MOISTURE AND INSTABILITY. EXPECT THE STORMS TO BE CAPABLE OF PRODUCE BRIEF HEAVY...GUSTY OUTFLOW WINDS TO 40 MPH AND SMALL HAIL. WILL KEEP THE ISOLATED TO SCATTERED POPS IN THE FORECAST FOR THE EVENING HOURS. A SHORT WAVE TROUGH CURRENTLY OVER BAJA CALIFORNIA WILL LIFT NORTHEAST ACROSS THE REGION ON WEDNESDAY. EXPECT MOSTLY CLOUDY SKIES AHEAD OF THIS FOR WEDNESDAY. BEST LIFT AND MOISTURE WILL REMAIN TO THE SOUTH AND EAST OF THE AREA. HOWEVER SHOULD BE ENOUGH MOISTURE AND LIFT WITH FOR SCATTERED SHOWERS AND THUNDERSTORMS. CAPES WILL BE LESS THAN 500 J/KG...SO EXPECT STORMS TO STAY BELOW SEVERE THRESHOLDS. LOWERED HIGH TEMPERATURES A FEW DEGREES DUE TO THE CLOUDINESS. .LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY) ISSUED AT 256 PM MDT TUE MAY 12 2015 WEAK QG ASCENT SHOULD STILL BE IMPACTING MUCH OF THE CWA AT 00Z THURSDAY AND WILL GRADUALLY TRANSITION TO SUBSIDENCE OVERNIGHT AS UPPER LEVEL RIDGING MOVES IN. THIS WILL ALLOW THURSDAY TO HAVE LOWER POPS ALTHOUGH PROBABLY NOT COMPLETELY ZERO...ESPECIALLY IN THE MOUNTAINS. THE NEXT WAVE AND QG ASCENT BEGINS IN THE MORE SOUTHERLY FLOW ON FRIDAY WHICH SHOULD ALLOW FOR A BIT MORE SHOWER COVERAGE IN THE MOUNTAINS DURING THE NORMAL DIURNAL TIMES BUT STILL NOTHING TREMENDOUS. SHOWER ACTIVITY ON THE PLAINS WILL BE BATTLING A LACK OF UPSLOPE SO PRECIPITATION THERE WILL BE SPOTTY AT BEST. THE SYSTEM FOR SATURDAY IS LOOKING A BIT LESS PROMISING THAN EARLIER. SOME SPREAD IN THE SOLUTIONS OF THE UPPER LOW POSITION BUT THE MODELS ARE SHOWING SOME QG ASCENT OVER THE CWA ALONG WITH LIGHT QPF. AGAIN...NOTHING TERRIBLY NOTEWORTHY. STRONG QG SUBSIDENCE IS FORECAST ON SUNDAY ALONG WITH A PUSH OF LOW LEVEL HIGH PRESSURE FROM THE NORTH WHICH MAY PUT A SIGNIFICANT DAMPER ON THE PRECIPITATION THREAT SUNDAY. THE UPPER RIDGE MOVES EAST OF COLORADO ON MONDAY FOR A SLIGHT INCREASE IN CONVECTIVE ACTIVITY BY TUESDAY. ALL IN ALL AT THIS TIME IT APPEARS THAT THERE IS A RATHER LOW RISK OF HEAVY PRECIPITATION THAT COULD WORSEN THE FLOODING SITUATION. MOREOVER...TEMPERATURES WILL REMAIN ON THE COOL SIDE WHICH WILL LESSEN THE MELTING OF THE SNOWPACK. && .AVIATION...(FOR THE TAFS THROUGH 00Z WEDNESDAY LATE AFTERNOON) ISSUED AT 256 PM MDT TUE MAY 12 2015 VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGH WEDNESDAY. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED 22-03Z TODAY. ANOTHER ROUND OF AFTERNOON THUNDERSTORMS ARE EXPECTED FOR WEDNESDAY...LIKELY A LITTLE EARLIER. THE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 35 KNOTS...BRIEF HEAVY RAIN AND SMALL HAIL. OUTSIDE OF OUTFLOW WINDS FROM THUNDERSTORMS...WINDS WILL BE SOUTHERLY AT KAPA AND KDEN. THROUGH WEDNESDAY. A WEAK DENVER CYCLONE MAY CAUSE WINDS TO TURN NORTHWESTERLY AFTER 12Z WEDNESDAY AT KDEN. && .HYDROLOGY... ISSUED AT 256 PM MDT TUE MAY 12 2015 THE SOUTH PLATTE RIVER IS CRESTING OVER WESTERN MORGAN COUNTY. THE CREST IS EXPECTED TO MOVE DOWN STREAM THROUGH MORGAN COUNTY THE NEXT 24 HOURS. FORECAST CRESTS HAVE BEEN SLIGHTLY LOWERED THIS MORNING ALONG THE SOUTH PLATTE RIVER. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THIS EVENING AND WEDNESDAY AFTERNOON AND EVENING. BRIEF HEAVY RAIN IS POSSIBLE WITH THE THUNDERSTORMS. BEST CHANCE FOR HEAVY RAIN WILL BE WEDNESDAY AFTERNOON WHERE UP TO AN INCH WILL BE POSSIBLE UNDER THE STRONGEST STORMS. && .BOU WATCHES/WARNINGS/ADVISORIES...NONE. && SHORT TERM...MEIER LONG TERM...ET AVIATION...MEIER HYDROLOGY...MEIER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1046 AM MDT TUE MAY 12 2015 COZ030>051-131700- JACKSON COUNTY BELOW 9000 FEET- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- CENTRAL AND SOUTHEAST PARK COUNTY- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 1046 AM MDT TUE MAY 12 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT FLOODING WILL CONTINUE ALONG THE SOUTH PLATTE RIVER IN EASTERN WELD...MORGAN AND FAR NORTHWEST WASHINGTON COUNTIES. THE SOUTH PLATTE RIVER IS EXPECTED TO CLIMB ABOVE FLOOD STAGE LATER TODAY AND TONIGHT IN LOGAN COUNTY. SWOLLEN STREAMS ELSEWHERE WILL CONTINUE TO SLOWLY RECEDE TODAY. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE HIGHER TERRAIN THIS AFTERNOON AND SPREAD ONTO THE FRONT RANGE AND NEAR BY EASTERN PLAINS LATE THIS AFTERNOON AND EVENING. GUSTY OUTFLOW WINDS TO 40 MPH AND BRIEF HEAVY RAIN WILL BE POSSIBLE WITH THE STORMS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS FOR WEDNESDAY AFTERNOON INTO THE EVENING AS A WEAKENING WEATHER DISTURBANCE CROSSES THE REGION. A RETURN TO NEAR NORMAL CONDITIONS WILL OCCUR ON THURSDAY AND FRIDAY FEATURING SOME AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. ANOTHER SYSTEM WILL LIKELY IMPACT THE OUTLOOK AREA SATURDAY AND SATURDAY NIGHT INCREASING THE POSSIBILITY OF A MORE WIDESPREAD PRECIPITATION EVENT AT THAT TIME. SOME DRYING IS THEN EXPECTED ON SUNDAY. THE SOUTH PLATTE RIVER WILL CONTINUE RUNNING HIGH THROUGHOUT NORTHEAST COLORADO THROUGH MOST OF THE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
The national radar mosaic for the moment the first event began.
1 avalanche. Local standard time, as filed.
A jogger suffered minor injuries when the tree he was standing under was struck by lightning.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2015Every state in 2015This day in weather historyWarnings in Colorado, May 2015
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: 566067.