An upper low moving down the coast pulled in just enough monsoon moisture to trigger isolated thunderstorms over the Desert Southwest.
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 VEF wrote it up.
An upper low moving down the coast pulled in just enough monsoon moisture to trigger isolated thunderstorms over the Desert Southwest.
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 Sep 20, 1:45 PM PST, 2 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 245 PM PDT SAT SEP 20 2014 .SYNOPSIS...A LOW PRESSURE SYSTEM CIRCULATING NEAR THE SOUTHERN CALIFORNIA COAST WILL PULL MOISTURE ACROSS SOUTHERN NEVADA AND NORTHWEST ARIZONA THROUGH SUNDAY LEADING TO SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS. THE SYSTEM WILL LIFT AWAY TO THE NORTHEAST BY LATE SUNDAY FOLLOWED BY DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES THROUGH THE FIRST HALF OF NEXT WEEK. && .SHORT TERM /THROUGH MONDAY NIGHT/... THE UPPER LOW WE HAVE BEEN WATCHING THE LAST FEW DAYS OVER THE WESTERN CALIFORNIA COAST IS STARTING TO MOVE NORTHEAST AND WILL CONTROL OUR WEATHER THROUGH SUNDAY. THIS WILL PROVIDE SHOWER AND THUNDERSTORM CHANCES AS WELL AS COOLER TEMPERATURES. DRY CONDITIONS AND A WARMING TREND WILL COMMENCE MONDAY. MOISTURE CONTINUES TO INCREASE ACROSS OUR AREA...WRAPPING CYCLONICALLY AROUND THE UPPER LOW TO OUR WEST. SCATTERED SHOWERS AND THUNDERSTORMS HAVE BEEN AROUND THROUGHOUT THE DAY AND WILL INCREASE IN COVERAGE THROUGH THIS EVENING. AREA PW VALUES RANGING FROM 1 INCH IN OUR NORTHWEST TO 1.5 INCHES ALONG THE COLORADO RIVER NEAR NEEDLES ARE FORECAST BY EARLY EVENING...WHICH WOULD PROMOTE HEAVY RAIN. AREA AVERAGE RAIN AMOUNTS OF 0.25-0.50 INCHES WITH LOCALIZED AMOUNTS OVER 1 INCH WILL BE POSSIBLE. THE AVERAGE STORM MOTION WILL BE AROUND 20 MPH OR SO...WITH STORMS MOVING FROM SOUTHEAST TO NORTHWEST. THIS MOTION WOULD GENERALLY LIMIT THE AMOUNT OF TIME ANY ONE CELL IS OVER ONE PARTICULAR AREA. HOWEVER...THERE CAN BE SOME ISOLATED AREAS WHERE REDEVELOPMENT OR TRAINING CONVECTION FOR A SHORT PERIOD OF TIME MAY WARRANT THE ISSUANCE OF A FLASH FLOOD WARNING HERE AND THERE. WITH WIDESPREAD FLASH FLOODING NOT ANTICIPATED AT THIS TIME...WILL NOT ISSUE ANY WATCH PRODUCTS BUT TRENDS WILL BE MONITORED. THE STRONGEST STORMS MAY ALSO PRODUCE SOME GUSTY WINDS IN EXCESS OF 45 MPH AS WELL AS SOME HAIL. SO PLEASE KEEP ALERT OF CHANGING WEATHER CONDITIONS THIS AFTERNOON AND EVENING PARTICULARLY IF YOU HAVE OUTDOOR PLANS. THE LOW WILL CONTINUE A NORTHEAST TRACK ACROSS CALIFORNIA AND NEVADA TONIGHT AND SUNDAY. THE FOCUS FOR CONVECTION WILL SHIFT NORTH...WITH DRIER AIR WORKING INTO OUR CALIFORNIA AREAS LATE TONIGHT AND ESPECIALLY BY SUNDAY AFTERNOON. SO...SHOWER AND THUNDERSTORM CHANCES WILL BE MAINLY CONFINED TO SOUTHERN NEVADA AND NORTHWEST ARIZONA SUNDAY. THE LOW WILL EXIT THE REGION BY SUNDAY NIGHT WITH DRY AIR PUSHING ACROSS THE REST OF THE AREA OVERNIGHT...BRINGING AN END TO SHOWER AND STORM CHANCES. .LONG TERM...TUESDAY AND WEDNESDAY. HIGH PRESSURE EXPANDS OVER THE AREA IN RESPONSE TO A DEEPENING PACIFIC TROUGH OFF THE WEST COAST. OVERALL, DRY AND MOSTLY CLEAR CONDITIONS ALONG WITH LIGHT WINDS ARE EXPECTED. TEMPERATURES ARE FORECAST TO BE 4-8 DEGREES ABOVE NORMAL. WEDNESDAY THROUGH SATURDAY...CONTINUED TRENDING THE FORECAST WITH THE MORE CONSISTENT GFS DURING THIS PERIOD BUT DID NOT COMPLETELY RULE OUT THE ECMWF GIVEN ITS AGREEMENT WITH THE GFS REGARDING A CLOSED LOW MOVING OVER THE GREAT BASIN. THE GFS BRINGS A SHARP SHORTWAVE AROUND THE BASE OF A PACIFIC TROUGH AND INTO NORTHERN AND CENTRAL CALIFORNIA THURSDAY. THIS WOULD RESULT IN BREEZY TO LOCALLY WINDY CONDITIONS ACROSS THE AREA WITH POSSIBLE WEAK DOWNSLOPE FLOW OCCURRING ALONG THE EASTERN SIERRA SLOPES. THE GFS SOLUTION LIFTS THE SHORTWAVE QUICKLY TO THE NORTHEAST WITH THE MAIN TROUGH AXIS THEN PUSHING INTO CALIFORNIA AND NEVADA FRIDAY. IF THE GFS IS CORRECT, THERE COULD BE A PERIOD OF STRONG WINDS ACROSS PORTIONS OF THE AREA FRIDAY WITH WARM TEMPERATURES AGAIN OVER THE DESERTS BUT COOLING CONDITIONS OVER INYO COUNTY AND THE SOUTHERN GREAT BASIN. COOLER WEATHER WOULD THEN BE IN STORE FOR THE BEGINNING OF THE WEEKEND WITH TEMPERATURES POTENTIALLY WELL BELOW NORMAL FOR LATE SEPTEMBER. THE ECMWF IS MUCH WETTER THAN THE GFS ON SATURDAY DUE TO THE LOCATION OF THE LOW SO THE OFFICIAL FORECAST TAKES THIS INTO ACCOUNT WITH A SLIGHT CHANCE OF SHOWERS IN THE FAVORED REGIONS OF THE LOW WHICH INCLUDES PORTIONS OF THE SIERRA, THE NORTHERN CWA AND MOHAVE COUNTY. && .AVIATION...FOR MCCARRAN...MOISTURE CONTINUES TO INCREASE LEADING TO SCATTERED SHOWERS AND THUNDERSTORMS OVER SOUTHERN NEVADA THIS AFTERNOON THROUGH TONIGHT. PREVAILING WINDS WILL BE SOUTH-SOUTHEAST AROUND 5-8 KTS THIS AFTERNOON AND EARLY EVENING BUT GUSTY AND ERRATIC WINDS CAN BE EXPECTED THROUGH THE EVENING DUE TO SHOWERS AND THUNDERSTORMS NEAR THE TERMINAL AREA. STORM COVERAGE WILL BE MOST EXTENSIVE IN BEATTY...PEACH SPRINGS...AND MORMON MESA CORRIDORS. BKN-OVC CLOUDS WILL GENERALLY HAVE BASES 8-10 KFT BUT WILL LIKELY LOWER TO AROUND 6 KFT NEAR ANY SHOWERS AND THUNDERSTORMS. A CLEARING TREND WILL OCCUR SUNDAY. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...MOISTURE CONTINUES TO INCREASE OVER MUCH OF SOUTHERN NEVADA AND NORTHWEST ARIZONA WITH SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS EXPECTED THROUGH TONIGHT. LOWERING CLOUDS BASES WILL LEAD TO MARGINAL VFR CONDITIONS OVER SOUTH CENTRAL NEVADA AND NORTHWEST ARIZONA WITH MOUNTAIN OBSCUREMENT LIKELY. A CLEARING TREND WILL OCCUR FROM SOUTHWEST TO NORTHEAST SUNDAY. && .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER....SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && SHORT TERM/AVIATION...PADDOCK LONG TERM...SALMEN FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE: HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LAS VEGAS NV
258 PM PDT SAT SEP 20 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0315 PM FLASH FLOOD NNW JOSHUA TREE 34.13N 116.32W
09/16/2014 SAN BERNARDINO CA BROADCAST MEDIA
MEDIA REPORTS HOME SEVERELY BY FLASH FLOODING IN JOSHUA
TREE. INFANT WASHED AWAY IN FLOOD WATERS RUSHING THROUGH
HOME BUT SURVIVED. TIME ESTIMATED.
0330 PM FLASH FLOOD 2 WSW JOSHUA TREE 34.12N 116.34W
09/16/2014 SAN BERNARDINO CA BROADCAST MEDIA
*** 1 FATAL *** MEDIA REPORTS 1 FATALITY FROM FLOOD
WATERS SWEEPING SUV OFF ROAD
0330 PM FLASH FLOOD 1 NNE JOSHUA TREE 34.14N 116.32W
09/16/2014 SAN BERNARDINO CA FIRE DEPT/RESCUE
FIRE DEPARTMENT REPORTS SIGNIFICANT FLOODING ACROSS
HIGHWAY 62 NEAR PARK BLVD. FLOOD CHANNELS ARE FLOWING BUT
NOT YEAT AT CAPACITY.
0333 PM HAIL 2 S JOSHUA TREE 34.10N 116.32W
09/16/2014 E1.00 INCH SAN BERNARDINO CA TRAINED SPOTTER
SPOTTER REPORTS QUARTER SIZE HAIL WITH VERY HIGH WIND
GUSTS ESTIMATED AT 40 MPH
0333 PM HEAVY RAIN 2 S JOSHUA TREE 34.10N 116.32W
09/16/2014 M0.00 INCH SAN BERNARDINO CA TRAINED SPOTTER
OVER 1.0 INCH OF RAIN IN ABOUT 25 MIN REPORTED BY A
SPOTTER IN JOSHUA TREE.
0337 PM FLASH FLOOD 4 N JOSHUA TREE 34.18N 116.32W
09/16/2014 SAN BERNARDINO CA FIRE DEPT/RESCUE
FIRE DEPARTMENT REPORTS HOME FLOODED ON OUTPOST ROAD IN
JOSHUA TREE
0344 PM FLASH FLOOD 2 SW JOSHUA TREE 34.11N 116.34W
09/16/2014 SAN BERNARDINO CA FIRE DEPT/RESCUE
HOUSE FLOODED ON NAVAJO TRAIL NEAR SUNNY VISTA
0509 PM FLASH FLOOD 9 ESE CEDAR HILLS 35.12N 113.65W
09/16/2014 MOHAVE AZ DEPT OF HIGHWAYS
MOHAVE CO. DEPT OF TRANSPORTATION TWEETED THAT HACKBERRY
ROAD WAS CLOSED FROM AZ-93 TO I-40 DUE TO FLOODING.
0522 PM HEAVY RAIN 4 NNW LAKE HAVASU CITY 34.53N 114.35W
09/16/2014 E1.00 INCH MOHAVE AZ TRAINED SPOTTER
1 INCH OF RAIN IN 30 MINUTES. LOTS OF STANDING WATER
0540 PM FLASH FLOOD 3 NW LAKE HAVASU CITY 34.51N 114.36W
09/16/2014 MOHAVE AZ PUBLIC
GENERAL PUBLIC POSTED A VIDEO AND PICTURES OF WATER
RUNNING RAPIDLY THROUGH A WASH OVER LONDON BRIDGE ROAD.
ROAD WAS IMPASSABLE.
0540 PM FLASH FLOOD 3 NW LAKE HAVASU CITY 34.51N 114.36W
09/16/2014 MOHAVE AZ PUBLIC
GENERAL PUBLIC POSTED A PICTURE AND VIDEO ON FACEBOOK OF
WATER RUNNING RAPIDLY THROUGH A WASH OVER LONDON BRIDGE
ROAD. ROAD WAS IMPASSABLE.
0540 PM FLASH FLOOD 3 NW LAKE HAVASU CITY 34.51N 114.36W
09/16/2014 MOHAVE AZ PUBLIC
GENERAL PUBLIC POSTED PICTURE OF WATER RAPIDLY RUNNING
THROUGH A WASH OVER AVIATION DR. ROAD WAS IMPASSABLE.
0558 PM HAIL 4 NE DOLAN SPRINGS 35.64N 114.22W
09/16/2014 E1.00 INCH MOHAVE AZ TRAINED SPOTTER
0609 PM FLASH FLOOD 7 SSW MUSIC MOUNTAIN RA 35.53N 113.86W
09/16/2014 MOHAVE AZ DEPT OF HIGHWAYS
MOHAVE COUNTY DEPT OF TRANSPORTATION TWEETED THAT ANTARES
ROAD IS CLOSED AT THE TRUXTON WASH DUE TO FLOODING.
0645 PM FLASH FLOOD 3 SSE NEEDLES 34.77N 114.60W
09/16/2014 SAN BERNARDINO CA LAW ENFORCEMENT
CHP HAS CLOSED US 95 AT THE INTERSECTION OF FIVE MILE
ROAD SOUTH OF NEEDLES DUE TO FLOODING IN MANY LOCATIONS
SOUTH OF THE CLOSURE. THE TIME IS ESTIMATED.
0701 PM FLASH FLOOD NE VIDAL JUNCTION 34.19N 114.57W
09/16/2014 SAN BERNARDINO CA LAW ENFORCEMENT
CHP REPORTS ABOUT 5 FEET OF WATER FLOWING WITH DEBRIS AND
MUD OVER THE ROAD WITH TRAFFICE STOPPED ON BOTH SIDES.
CHP HAS CLOSED US-95 NORTH OF CA-62 AS OF 804 PM.
0809 PM FLASH FLOOD 8 ENE CHLORIDE 35.43N 114.04W
09/16/2014 MOHAVE AZ DEPT OF HIGHWAYS
MOHAVE COUNTY DEPT OF TRANSPORTATION TWEETED THAT N.
STOCKTON HILL ROAD WAS CLOSED FROM PIERCE FERRY ROAD TO
VOCK WASH DUE TO FLOODING.
0815 PM FLASH FLOOD 6 WSW DOLAN SPRINGS (MD 35.56N 114.39W
09/16/2014 MOHAVE AZ FIRE DEPT/RESCUE
DOLAN SPRINGS FD REPORTED WATER FLOWING THROUGH WASH
ACROSS 7TH STREET. ROAD WAS IMPASSABLE AND FIRE TRUCK WAS
STRANDED THERE OVERNIGHT.
&&
SUMMARY OF REPORTS FROM TUESDAY, SEPTEMBER 16TH ASSOCIATED WITH A
PUSH OF MOISTURE FROM HURRICANE ODILLE.
VEF STAFFPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LAS VEGAS NV
300 PM PDT SAT SEP 20 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 AM FLOOD 1 NNW TOPOCK 34.73N 114.48W
09/17/2014 MOHAVE AZ DEPT OF HIGHWAYS
MOHAVE COUNTY DEPT OF TRANSPORTATION TWEETED THAT US-95
AT THE SACRAMENTO WASH WAS CLOSED DUE TO FLOODING. WEBCAM
SHOWED WATER OVER ROAD AT SUNRISE. TIME IS ESTIMATED.
0255 PM HEAVY RAIN 3 W RACHEL 37.64N 115.76W
09/17/2014 M1.02 INCH LINCOLN NV TRAINED SPOTTER
TRAINED SPOTTER REPORTED 1.02 INCHES OF RAINFALL IN
AUTOMATED GAUGE...1.2 INCHES IN OLDER MANUAL GAUGE. RAIN
FELL OVER APPROXIMATELY 1.5 HOURS. SPOTTER ALSO REPORTED
BB SIZED HAIL AT 220 PM.
&&
SUMMARY OF REPORTS FROM WEDNESDAY, SEPTEMBER 17TH, ASSOCIATED WITH A
MOISTURE PUSH FROM HURRICANE ODILLE.
VEF STAFFPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
443 PM PDT SAT SEP 20 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0426 PM HEAVY RAIN FURNACE CREEK 36.45N 116.85W
09/20/2014 E0.40 INCH INYO CA LAW ENFORCEMENT
CALIFORNIA HIGHWAY PATROL REPORTED 2 TO 3 INCHES OF WATER
WAS ACROSS THE ROADWAY BETWEEN BADWATER AND COW CREEK.
&&
STACHELSKIThe Edwards AFB radar (KEYX), 160 km away, was scanning. The volume nearest the first event began at 00:02 UTC.
1 flash flood, 1 lightning, 1 thunderstorm wind. Local standard time, as filed.
Twenty Mule Team Road, Salt Creek Road, and Titus Canyon Road were all damaged by flash flooding.
Lightning struck and damaged Southern California Edison equipment, knocking out power to 15 customers.
Thunderstorm winds blew a tree onto Sunland Lane, blocking half of the road. The Bishop ASOS recorded a peak gust of 56 mph several minutes before the tree fell.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2014Every state in 2014This day in weather historyWarnings in California, September 2014
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: 542866, 542929, 542867.