1 flash flood, as filed by the National Weather Service.
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 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 Feb 20, 12:01 PM PST, 1 hour 14 minutes earlier.
AREA FORECAST DISCUSSION...CORRECTED NATIONAL WEATHER SERVICE LAS VEGAS NV 1201 PM PST SUN FEB 20 2005 .SYNOPSIS...A STRONG STORM SYSTEM OFF THE CENTRAL CALIFORNIA COAST WILL SPREAD RAIN AND SNOW ACROSS THE SOUTHERN GREAT BASIN AND MOHAVE DESERT THROUGH TUESDAY...BEFORE MOVING OVER AND EAST OF THE AREA INTO THE MIDDLE OF THE WEEK. LOCALLY HEAVY RAIN AND SNOW AMOUNTS MAY BE SEEN AS THIS SYSTEM MOVES ACROSS THE AREA. && .UPDATE...UPDATED FIRST PERIOD OF THE ZONES TO REMOVE MORNING WORDING. OVERALL REMAINDER OF THE FORECAST ON TRACK AS UPPER LOW CONTINUES TO DEVELOP OFF THE CENTRAL CALIFORNIA COAST. && .PREV DISCUSSION...225 AM PST...SHORT TERM...WEAK SHORTWAVE RIDGING WILL ALLOW FOR LESS AREAL COVERAGE OF SHOWERS THIS AFTERNOON AS WARMER TEMPS ALOFT HELP TO STABILIZE THE ATMOSPHERE. DROPPED POPS A LITTLE FOR THE FIRST PERIOD TO FOLLOW CURRENT TRENDS. 00Z MODELS DID A GOOD JOB INITIALIZING THE CHUNK OF ENERGY DROPPING OFF THE PACNW COAST AND THE LOW NEAR 35N/135W. THESE SYSTEMS ARE EXPECTED TO MERGE TOMORROW INTO ONE GENERAL AREA OF LOW PRESSURE...ALTHOUGH THE NORTHERN CHUNK OF ENERGY WILL EVENTUALLY ROTATE AROUND THE BASE OF THE ALREADY EXISTING PACIFIC LOW. WHOLE SYSTEM WILL BEGIN TO MOVE ONSHORE MONDAY NIGHT. STRONG DIFFLUENCE AHEAD OF SYSTEM SUNDAY NIGHT/MONDAY WILL COMBINE WITH VORT LOBE ROTATING AROUND THE LOW CENTER TO CREATE DEEP LAYER LIFT. THIS WILL BRING ANOTHER SIGNIFICANT STRATIFORM PRECIP ONSHORE AND OVER THE REGION. NAM HAS COME AROUND TO THE TIMING OF THE GFS AS FAR AS PRECIP SO HAVE DECENT CONFIDENCE ON TIMING. BIGGEST CHALLENGE RIGHT NOW IS SNOW FORECAST FOR THE SIERRA SUNDAY NIGHT/MONDAY. THE GFS IS BRINGING A LOT MORE PRECIP INTO THE SOUTHERN SIERRA THAN THE NAM...AND FURTHER NORTH. NAM SOLUTION WOULD NOT EVEN MEET ADVISORY CRITERIA FOR ASPENDELL. ATTM...AM LEANING TOWARDS THE GFS SINCE IT HAS DONE A BETTER JOB RECENTLY WITH PRECIP PLUMES AHEAD OF THESE LOWS. STEADY PRECIP FORECAST TO BEGIN OVER THE WESTERN CWA TONIGHT...SPREADING INTO SOUTHWESTERN NEVADA BY EARLY MORNING...FINALLY COVERING WHOLE CWA BY LATE MONDAY MORNING. AT THIS TIME...PRECIP AMOUNTS STILL NOT CERTAIN...BUT VALLEY LOCATIONS LOOK TO RECEIVE BETWEEN ONE HALF AND ONE INCH OF RAINFALL. AMOUNTS IN THIS RANGE USUALLY CAUSE LOCALIZED FLOODING OF ROADS AND WASHES. SIGNIFICANT SNOWFALLS ARE EXPECTED IN THE HIGHER ELEVATIONS...GENERALLY ABOVE 5500 FEET. SEE WINTER STORM PRODUCTS AND ZONE FORECAST PRODUCT FOR MORE DETAILS. GOOD CHANCES FOR PRECIP WILL CONTINUE INTO TUESDAY AS THE MAIN LOW CENTER MOVES ONSHORE. THIS WILL BRING ANOTHER ROUND OF RAIN/SNOW...ALTHOUGH AT THIS TIME IT LOOKS TO BE LESS ORGANIZED THAN WHAT IS EXPECTED ON MONDAY. && .LONG TERM...MODELS IN PRETTY GOOD AGREEMENT FOR THE WEDNESDAY THROUGH SATURDAY TIME FRAME WITH BASICALLY A REX BLOCK SITUATION THROUGH THE PERIOD. UPPER LOW REMAINS CLOSED WEDNESDAY THROUGH THURSDAY AS IT MOVES SLOWLY INTO NORTHERN ARIZONA. PRECIPITATION CHANCES WILL GRADUALLY DECREASE SOMEWHAT FROM THE WEST BUT THERE WILL STILL BE A CHANCE OR SLIGHT CHANCE OF PRECIPITATION OVER MUCH OF SOUTHERN NV AND NORTHWEST ARIZONA...ESPECIALLY IN THE FAR EAST. THE LOW WEAKENS INTO AN ELONGATED TROUGH ACROSS NORTHERN ARIZONA AND BACK INTO CENTRAL CA WHILE HIGH PRESSURE SETS UP OVER THE NORTHERN GREAT BASIN. WHILE DYNAMICS WILL BE LACKING...MOISTURE TRAPPED OVER THE REGION WILL ALLOW FOR AT LEAST A SLIGHT CHANCE OF DAYTIME MOUNTAIN SHOWERS. PRECIPITATION AMOUNTS SHOULD BE ON THE LIGHT SIDE. TEMPERATURES WILL WARM SLIGHTLY BY SATURDAY BUT MAX TEMPS ARE STILL EXPECTED TO REMAIN BELOW NORMAL. && .AVIATION...TAF ADEQUATELY COVERS ALL SIGNIFICANT WEATHER EXPECTED AT KLAS. && .VEF WATCHES/WARNINGS/ADVISORIES... .NV...WINTER STORM WATCH NVZ018-019 MONDAY AND MONDAY NIGHT. .AZ...NONE. .CA...WINTER STORM WATCH CAZ026 21/08Z-22/02Z. && JENSEN/DAVIS/HARRISON
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAS VEGAS NV 549 AM PST SUN FEB 20 2005 CAZ026-211348- OWENS VALLEY AND ADJACENT EASTERN SIERRA SLOPES CA- 549 AM PST SUN FEB 20 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST CALIFORNIA...SOUTHERN NEVADA AND NORTHWEST ARIZONA. .DAY ONE...TODAY. SNOW SHOWERS WILL BECOME LIKELY IN THE SIERRA THIS AFTERNOON WITH ACCUMULATION UP TO 2 INCHES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. A WINTER STORM WATCH IS IN EFFECT LATE TONIGHT AND MONDAY FOR THE MOUNTAINS. SNOWFALL OF 1 TO 2 FEET IS POSSIBLE DURING THIS TIME. RAIN IS EXPECTED IN THE VALLEY WHICH COULD CAUSE SOME NUISANCE FLOODING OF LOW LYING AREAS. RAIN AND MOUNTAIN SNOW IS POSSIBLE THROUGH WEDNESDAY BEFORE DIMINISHING FOR THE END OF THE WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER ACCORDING TO STANDARD OPERATING PROCEDURES. NVZ018-019-211348- SHEEP RANGE NV-SPRING MOUNTAINS-RED ROCK CANYON NV- 549 AM PST SUN FEB 20 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST CALIFORNIA...SOUTHERN NEVADA AND NORTHWEST ARIZONA. .DAY ONE...TODAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. A WINTER STORM WATCH IS IN EFFECT FOR MONDAY AND MONDAY NIGHT. SNOWFALL OF 10 TO 20 INCHES IS POSSIBLE ABOVE 5500 FEET AS A STRONG LOW PRESSURE SYSTEM MOVES INLAND. A CHANCE OF SNOW SHOWERS WILL CONTINUE THROUGH THURSDAY BEFORE DIMINISHING FOR THE END OF THE WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER ACCORDING TO STANDARD OPERATING PROCEDURES. AZZ001>003-036-CAZ027>029-NVZ014>017-020>022-211348- DEATH VALLEY NATIONAL PARK CA-ESMERALDA AND CENTRAL NYE COUNTY NV- LAKE HAVASU AND FORT MOHAVE AZ-LAKE MEAD NATIONAL RECREATION AREA AZ- LAKE MEAD NATIONAL RECREATION AREA NV-LAS VEGAS VALLEY NV- LINCOLN COUNTY NV-NORTHEAST CLARK COUNTY NV-NORTHWEST DESERTS AZ- NORTHWEST PLATEAU AZ-SAN BERNARDINO COUNTY DESERTS CA- SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY CA- SOUTHERN CLARK COUNTY NV-WESTERN CLARK AND SOUTHERN NYE COUNTY NV- 549 AM PST SUN FEB 20 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST CALIFORNIA...SOUTHERN NEVADA AND NORTHWEST ARIZONA. .DAY ONE...TODAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. WIDESPREAD RAIN AND HIGH ELEVATION SNOW WILL DEVELOP MONDAY. SNOWFALL UP TO 4 INCHES IS POSSIBLE ABOVE 5500 FEET WHILE RAINFALL AT LOWER ELEVATIONS COULD CAUSE SOME NUISANCE FLOODING OF LOW LYING AREAS. A CHANCE OF RAIN AND SNOW WILL CONTINUE THROUGH THURSDAY BEFORE DIMINISHING FOR THE END OF THE WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER ACCORDING TO STANDARD OPERATING PROCEDURES.
The Las Vegas radar (KESX), 57 km away, was scanning. The volume nearest the first event began at 21:17 UTC.
1 flash flood. Local standard time, as filed.
Heavy rains caused flash flooding in western Las Vegas with several roads flooded. Many of the roads were impassable and washed out in places.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2005Every state in 2005This day in weather historyWarnings in Nevada, February 2005
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: 5443150.