Cooling temperatures overnight after light rain the previous evening led to isolated dense fog over the Mojave Desert.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 VEF wrote it up.
Cooling temperatures overnight after light rain the previous evening led to isolated dense fog over the Mojave Desert.
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 Las Vegas, NV wrote its last area forecast discussion before the first event at Jan 27, 9:48 AM PST, 12 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 948 AM PST TUE JAN 27 2015 .SYNOPSIS...SCATTERED SHOWERS WILL LINGER ACROSS THE SOUTHERN GREAT BASIN THROUGH EARLY THIS EVENING BEFORE DISSIPATING. DRY CONDITIONS ARE EXPECTED WEDNESDAY BUT UNSETTLED CONDITIONS MAY RETURN THURSDAY THROUGH THE WEEKEND ALTHOUGH CONFIDENCE IS LOW AT THIS TIME. && .UPDATE...RADAR SHOWING ISOLATED TO SCATTERED SHOWERS LIFTING NORTH OUT OF CLARK AND MOHAVE COUNTIES INTO LINCOLN COUNTY AND SOUTHWEST UTAH. ACROSS THE MOJAVE DESERT PLENTY OF LOW CLOUDS/PATCHY FOG DEVELOPED THIS MORNING IN THE WAKE OF THE UPPER LOW. CEILINGS STARTING TO LIFT WITH PATCHES OF BLUE SKY BECOMING VISIBLE. PARTIAL CLEARING WILL CONTINUE INTO THE AFTERNOON. WILL SEND OUT ANOTHER UPDATE AROUND 10 AM. && .AVIATION...FOR MCCARRAN...IMPROVING CEILINGS CONTINUE WITH BREAKS IN OVERCAST ALREADY MORE APPARENT OVER THE LAS VEGAS VALLEY. CONDITIONS CONTINUE TO IMPROVE IN THE AFTERNOON WITH SCT-BKN CLOUDS WITH BASES AROUND 4K OR 5K FEET BEFORE CEILINGS SCATTER OUT THIS EVENING. WINDS WILL BE AT OR BELOW 9KTS THROUGH THE PERIOD. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...ISOLATED TO SCATTERED SHOWERS FROM INYO COUNTY NORTHEAST INTO LINCOLN COUNTY TODAY AND THIS EVENING. LOW CEILINGS/FOG WILL PERSIST ACROSS PORTIONS OF THE MOJAVE DESERT UNTIL EARLY AFTERNOON BEFORE CONDITIONS IMPROVE. LOCALIZED FOG AND LOW STRATUS MAY AGAIN DEVELOP TONIGHT. && .PREV DISCUSSION... 345 AM PST TUE JAN 27 2015 .SHORT TERM...THROUGH WEDNESDAY MORNING PRECIPITATION CONTINUES EARLY THIS MORNING ACROSS MUCH OF THE REGION NORTH OF INTERSTATE 40. OVERALL THE RAIN EVENT HAS UNFOLDED PRETTY MUCH AS ANTICIPATED WITH BETWEEN A TENTH AND A QUARTER INCH FALLING IN THE LAS VEGAS VALLEY. AMOUNTS ACROSS SAN BERNARDINO COUNTY AND ALONG THE LOWER COLORADO RIVER VARIED BETWEEN A TENTH AND AS MUCH AS A HALF AN INCH NEAR LAKE HAVASU. PARTS OF SOUTHERN INYO COUNTY HAVE ALSO RECEIVED A GOOD SOAKING OF BETWEEN A QUARTER OF AN INCH AND NEARLY SEVEN-TENTHS OF AN INCH OF RAIN IN SOME LOCATIONS. AS THE TROUGH DRIVING THIS ACTIVITY LIFTS NORTH THIS MORNING IT WILL DRAG THE MOISTURE AND PRECIPITATION WITH IT... ALLOWING FOR THINGS TO DRY OUT BY SUNRISE ACROSS MOST OF THE AREA SOUTH OF THE GREAT BASIN. FURTHER NORTH...RAIN SHOWERS WILL LINGER THROUGH THE DAY ACROSS THE SOUTHERN GREAT BASIN BUT ADDITIONAL AMOUNTS WILL BE ON THE LIGHT SIDE. SNOW LEVELS WILL REMAIN ABOVE 7000 FEET. BY TONIGHT THE TROUGH WILL HAVE LIFTED INTO THE NORTHERN GREAT BASIN AND BECOME AN OPEN WAVE ALLOWING WEAK HIGH PRESSURE TO BEGIN TO BUILD INTO THE REGION. FAIRLY HIGH MOISTURE CONTENT WILL REMAIN IN THE LOWER ATMOSPHERE AS THIS SYSTEM NEVER REALLY SCOURED THINGS OUT AS IT DEPARTED...SO WE WILL NEED TO WATCH FOR AREAS OF FOG OR STRATUS DEVELOPMENT BUT FOR NOW I HAVE LEFT THAT OUT OF THE GRIDS. .LONG TERM...WEDNESDAY THROUGH MONDAY... WHILE MODEL GUIDANCE CONTINUES TO BE IN REASONABLE AGREEMENT REGARDING THE TRACK OF THE APPROACHING PACIFIC IMPULSE...TIMING DIFFERENCES CONTINUE TO EXIST BETWEEN MODEL RUNS. THAT SAID...CONFIDENCE IS HIGHER THAN LAST NIGHT REGARDING THE LOCATION OF HIGHEST POPS. CLOUDS ARE EXPECTED TO INCREASE IN COVERAGE AREA WIDE WEDNESDAY INTO THURSDAY AS THE DISTURBANCE BEGINS TO MOVE INTO THE AREA. AS MENTIONED IN THE PREVIOUS DISCUSSION...THERE WILL BE ENOUGH MOISTURE AVAILABLE TO JUSTIFY POPS ACROSS MUCH OF THE CWA BY THURSDAY EVENING/NIGHT. HOWEVER...DESPITE THE TIMING DIFFERENCES BETWEEN MODELS...THE GFS AND ECMWF FOR EXAMPLE...GUIDANCE HAS BEEN CONSISTENT IN POINTING TOWARD EASTERN PORTIONS OF THE CWA...IN PARTICULAR MOHAVE COUNTY...AS THE AREA WHERE THE BEST MOISTURE WILL BE AVAILABLE. THIS COMBINED WITH THE MOST FAVORABLE UPPER LEVEL SUPPORT IN THIS AREA JUSTIFIED AN INCREASE IN POPS FOR FRIDAY. WHILE TIMING DIFFERENCES EXIST WITH THE PROGRESSION OF THIS DISTURBANCE...IT CONTINUES TO LOOK LIKELY THAT A DRYING TREND WILL TAKE PLACE DURING THE DAY SATURDAY FROM NORTHWEST TO SOUTHEAST WITH THE ENTIRE CWA SEEING DRY CONDITIONS SUNDAY INTO MONDAY. GUSTY NORTHERLY WINDS WILL BE THE MAIN WEATHER CONCERN AS THE LOW DEPARTS SATURDAY INTO SUNDAY WITH THE NORMAL WIND PRONE AREAS... ESPECIALLY THE COLORADO RIVER VALLEY...LIKELY BEING AFFECTED THE MOST. TEMPERATURES WILL REMAIN A FEW DEGREES ABOVE NORMAL THROUGHOUT THIS PERIOD BEFORE A SLIGHT WARMING TREND OCCURS SUNDAY AND MONDAY WITH THE DEPARTURE OF THE CLOUD COVER ASSOCIATED WITH THE SYSTEM. && .SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED BUT SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT RAIN OR SNOW THAT OBSERVED. && UPDATE...PIERCE SHORT TERM/AVIATION...OUTLER LONG TERM...PULLIN FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE: HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
607 AM PST TUE JAN 27 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0556 AM DENSE FOG 7 W TWENTYNINE PALMS 34.14N 116.19W
01/27/2015 SAN BERNARDINO CA TRAINED SPOTTER
TRAINED SPOTTER REPORTS DENSE FOG WITH VISIBILITY REDUCED
TO BETWEEN 1/8 TO 1/4 MILE ALONG HWY 62 WEST OF
TWENTYNINE PALMS.
&&
JPULLINPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
737 AM PST TUE JAN 27 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 AM DENSE FOG 1 NNE YUCCA VALLEY 34.12N 116.42W
01/27/2015 SAN BERNARDINO CA TRAINED SPOTTER
FOG HAS REDUCED VISIBILIY TO BELOW 1/4 MILE IN THE YUCCA
VALLEY/YUCCA MESA AREA.
&&
JPULLINThe national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Dense fog forced the closure of the Red Rock Scenic Loop in Red Rock Canyon.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2015Every state in 2015This day in weather historyWarnings in Nevada, January 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: 551769.