Some strong thunderstorms rolled across Montezuma County.
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 episode as NWS GJT wrote it up.
Some strong thunderstorms rolled across Montezuma 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 Grand Junction, CO wrote its last area forecast discussion before the first event at May 19, 11:09 AM MST, 2 hours 41 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1209 PM MDT TUE MAY 19 2015 .UPDATE... ISSUED AT 1209 PM MDT TUE MAY 19 2015 SNOW SHOWERS AND THUNDERSTORMS WILL CONTINUE OFF AND ON THROUGHOUT THE DAY OVER THE HIGHER TERRAIN WITH SCATTERED SHOWERS MOVING OVER THE VALLEYS. HOWEVER...AS TEMPERATURES CLIMB THE POTENTIAL FOR ACCUMULATING SNOW AT AND BELOW 10000 FEET BECOMES MARGINAL. AS A RESULT... EXPECT ROADWAYS OVER THE HIGH PASSES WILL REMAIN ICE FREE THROUGHOUT THE REMAINDER OF THE AFTERNOON. THEREFORE...THE WINTER WEATHER ADVISORY FOR MOST OF THE DIVIDE MOUNTAINS WAS ALLOWED TO EXPIRE. && .SHORT TERM...(TODAY THROUGH WEDNESDAY) ISSUED AT 351 AM MDT TUE MAY 19 2015 THE UPPER LOW CLOSES OFF OVER WESTERN UTAH THIS MORNING AND WILL EVENTUALLY EJECT NORTHEAST ACROSS WYOMING THIS AFTERNOON AND EVENING. EXPECTED WIDESPREAD RAIN AND MOUNTAIN SNOW SHOWERS TO GRADUALLY BECOME MORE SCATTERED IN NATURE BY THIS AFTERNOON WITH SNOW LEVELS CLIMBING BACK TO ABOVE 10K. WEBCAMS SHOW SOME ACCUMULATING SNOW OVER THE GRAND MESA SO ADDED THAT AREA TO THE GOING ADVISORIES. NO OTHER CHANGES PLANNED IN THAT REGARD. SHOWERS END THIS EVENING WITH DRIER AIR SWEEPING IN FROM THE WSW AS WEAK RIDGING TRIES TO BUILD OVER. LINGERING MOISTURE UNDER THE FLAT RIDGE COMBINED WITH WARMER CONDITIONS WILL KICK OFF ISOLATED SHOWERS WEDNESDAY AFTERNOON...GENERALLY CONFINED TO THE HIGHER TERRAIN. TEMPS WILL BE RUNNING A GOOD 10 TO 15 DEGREES BELOW NORMAL TODAY...BUT SHOULD REBOUND NICE ON WEDNESDAY UNDER THE RIDGE SLIDING OVERHEAD. .LONG TERM...(WEDNESDAY NIGHT THROUGH MONDAY) ISSUED AT 351 AM MDT TUE MAY 19 2015 TRANSITORY RIDGE MOVES OVER THE AREA WEDNESDAY NIGHT AND WILL KEEP PRECIP TO A MINIMUM FOR THE CWA THROUGH THURSDAY NIGHT. MUCH LIKE THE LAST RIDGE...AREAS FAVORED FOR PRECIP WILL BE ALONG THE CONTINENTAL DIVIDE BUT QPF AMTS DO LOOK ON THE LOW SIDE. FRIDAY LOOKS TO BE AN IN BETWEEN DAY AS THE RIDGE BREAKS DOWN AND HGT FALLS INDICATE LOW PRESSURE APPROACHING. THE DIFFERENCES BETWEEN THE GFS AND EC CONTINUE WITH THE EC OVERSPREADING PRECIP FOR MUCH OF THE REGION WHILE THE GFS IS REALLY HOLDING OFF. THE CANADIAN BRINGS IN PRECIP FRIDAY AFTERNOON AND DRYS OUT SIGNIFICANTLY THROUGH THE WEEKEND. OBVIOUSLY SOME INCONSISTENCIES REMAIN SO CONFIDENCE NOT AS HIGH AS WOULD LIKE FOR THIS UPCOMING STORM. WIDESPREAD CHC TO SCHC SHOWERS AND STORMS LOOKS GOOD FOR NOW THROUGH MUCH OF THE WEEKEND. BY SUNDAY...THE LOW WILL HAVE MOVED NORTH TO WY BUT UNSETTLED WX CONTINUES AS GENERAL TROUGHINESS PERSISTS OVER THE AREA WITH WEAK WAVES MOVING THROUGH THE MEAN FLOW. AFTERNOON SHOWERS AND STORMS WILL BE COMMON...GENERALLY FAVORING HIGHER TERRAIN THOUGH SOME CONVECTION WILL LIKELY DRIFT INTO VALLEYS FROM TIME TO TIME. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z WEDNESDAY AFTERNOON) ISSUED AT 1042 AM MDT TUE MAY 19 2015 UNSTABLE CONDITIONS LATE THIS MORNING AND INTO THE EVENING PERIOD WILL KEEP SHOWERS AND THUNDERSTORMS IN THE PICTURE FOR EASTERN UTAH AND WESTERN COLORADO. THREATS TO AVIATION INCLUDE GUSTY WINDS AND SMALL HAIL AND IMPACTS TO FLIGHT CONDITIONS AND MVFR TO IFR CONDITIONS FORM UNDER HEAVIER PASSING SHOWERS. WILL USE RADAR TO FINE TUNE FIRST PART OF FORECAST BUT EXPECT SOME TEMPO GROUPS FOR UNPREDICTABILITY OF THE CONVECTIVE CONDITIONS. MOUNTAIN OBSCURATION WILL ALSO CONTINUE UNTIL EARLY WEDNESDAY MORNING WHEN THIS STORM PULLS FARTHER EAST. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...NONE. UT...NONE. && UPDATE...NL SHORT TERM...JDC LONG TERM...TGR AVIATION...TGJT
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
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1240 PM MDT TUE MAY 19 2015 COZ009-011-191930- GRAND AND BATTLEMENT MESAS CO- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN CO- 1240 PM MDT TUE MAY 19 2015 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN DELTA COUNTY UNTIL 130 PM MDT... AT 1240 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER DELTA...OR 23 MILES NORTHWEST OF MONTROSE...MOVING NORTHEAST AT 15 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... DELTA...ORCHARD CITY...CEDAREDGE...CORY...ECKERT AND AUSTIN. LAT...LON 3869 10808 3883 10823 3902 10787 3882 10771 TIME...MOT...LOC 1840Z 239DEG 13KT 3878 10807 NL
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1248 PM MDT TUE MAY 19 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0624 AM HEAVY RAIN 2 NW ARRIOLA 37.46N 108.68W
05/19/2015 M0.68 INCH MONTEZUMA CO TRAINED SPOTTER
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1500740
MALEKSAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1249 PM MDT TUE MAY 19 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0656 AM HEAVY RAIN 6 W PAGOSA SPRINGS 37.27N 107.13W
05/19/2015 M0.87 INCH ARCHULETA CO TRAINED SPOTTER
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1500741
MALEKSAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1252 PM MDT TUE MAY 19 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0744 AM HEAVY RAIN 4 NNE CEDAREDGE 38.95N 107.90W
05/19/2015 M0.72 INCH DELTA CO TRAINED SPOTTER
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1500742
MALEKSAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1253 PM MDT TUE MAY 19 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0746 AM HEAVY RAIN 1 SSW HERMOSA 37.41N 107.86W
05/19/2015 M0.67 INCH LA PLATA CO TRAINED SPOTTER
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1500743
MALEKSAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1254 PM MDT TUE MAY 19 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0903 AM HEAVY RAIN 6 W DURANGO 37.29N 107.98W
05/19/2015 M0.70 INCH LA PLATA CO TRAINED SPOTTER
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1500744
MALEKSAThe Grand Junction radar (KGJX), 187 km away, was scanning. The volume nearest the first event began at 20:50 UTC.
1 funnel cloud, 1 thunderstorm wind. Local standard time, as filed.
A persistent funnel cloud was seen just northeast of Cortez and traveled northeast about four miles before it dissipated over the Summit Ridge area. The funnel clouds was photographed and reported by many people.
An intense thunderstorm produced strong outflow winds which destroyed a farm shed at a location between Mancos and Cortez.
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: 612463, 612584.