The Oasis fire started around 1244 PST on August 27 off Oasis Road south of Highway 138 and Pinion Hills, near the LA/San Bernardino County line. The fire, sparked by lightning from a nearby thunderstorm, burned though a total of 355 acres before it was finally contained around 1730 PST on the 30th.
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 SGX wrote it up.
The Oasis fire started around 1244 PST on August 27 off Oasis Road south of Highway 138 and Pinion Hills, near the LA/San Bernardino County line. The fire, sparked by lightning from a nearby thunderstorm, burned though a total of 355 acres before it was finally contained around 1730 PST on the 30th. Three firefighters were treated for minor injuries while fighting the blaze. No damage was reported with this fire.
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 San Diego, CA wrote its last area forecast discussion before the first event at Aug 27, 8:25 AM PST, 4 hours 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 925 AM PDT SAT AUG 27 2011 .SYNOPSIS... HOT CONDITIONS WILL CONTINUE ACROSS THE REGION THIS WEEKEND. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS POSSIBLE OVER THE MOUNTAINS AND DESERTS THIS AFTERNOON. A TROUGH OF LOW PRESSURE WILL DIG OVER THE WEST EARLY NEXT WEEK...WITH COOLER CONDITIONS PREVAILING AND A DEEPER MARINE LAYER DEVELOPING. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... WATER VAPOR IMAGERY CONDITIONS TO SHOW A STRONG RIDGE OF HIGH PRESSURE OVER THE FOUR CORNERS REGION THIS MORNING...WITH AN UPPER LEVEL LOW LIFTING ACROSS NORTHERN CALIFORNIA. AS A RESULT...HOT CONDITIONS WILL PREVAIL ONCE AGAIN. AT THIS TIME...TEMPERATURES ARE PRIMARILY RUNNING A FEW DEGREES WARMER THIS MORNING...AND EXPECT TEMPERATURES TO BE SIMILAR TO OR EVEN SLIGHTLY WARMER TODAY AS COMPARED TO YESTERDAY. SUBTROPICAL MOISTURE ALSO CONTINUES TO SPREAD ACROSS THE REGION...AND LOOKING OUT THE WINDOW...SOME ALTOCUMULUS CASTELLANUS CLOUDS ARE DRIFTING OVER THE REGION. THESE ACCAS CLOUDS ARE INDICATING OF MID MOISTURE AND INSTABILITY. THE 12Z KNKX SOUNDING ALSO SHOWS PW VALUES UP TO 1.71 INCHES...AND FORECASTING QUITE A BIT OF INSTABILITY FOR THIS AFTERNOON. THEREFORE...EXPECT ANOTHER ROUND OF AFTERNOON AND EARLY EVENING SHOWERS AND THUNDERSTORMS OVER THE MOUNTAINS AND DESERTS TODAY. THERE MAY EVEN BE A STRAY STORM OVER THE INLAND EMPIRE. AT THIS TIME...THE MAIN THREAT FROM THESE THUNDERSTORMS LOOKS TO BE HEAVY RAIN AND SOME LOCALIZED FLOODING...SIMILAR TO YESTERDAY. WILL NEED TO WATCH THESE STORMS CLOSELY THOUGH THIS AFTERNOON. OTHERWISE...JUST ISSUING A QUICK UPDATE THIS MORNING TO REFLECT CURRENT THINKING ON TEMPS. THESE HOT CONDITIONS WILL CONTINUE THROUGH SUNDAY...BEFORE COOLER WEATHER DEVELOPS NEXT WEEK. AT THIS TIME...THERE STILL LOOKS LIKE THERE MAY BE SOME POTENTIAL FOR SHOWERS AND THUNDERSTORMS TOMORROW...SO WILL NEED TO TAKE A CLOSER LOOK AT THAT FOR THIS AFTERNOONS FORECAST. OTHERWISE...EXPECT DRY AND COOLER CONDITIONS TO DEVELOP STARTING MONDAY...AS A TROUGH OF LOW PRESSURE DIGS ALONG THE WEST COAST...WITH THE MARINE LAYER RETURNING AND DEEPENING FOR LATE IN THE WEEK. && .AVIATION... 271530Z...COAST/VALLEYS...GENERALLY VFR THROUGH SUNDAY MORNING WITH SCT-BKN CLOUDS AOA 12000 FEET. MOUNTAINS/DESERTS...SCT-BKN CLOUDS AOA 12000 FEET...EXCEPT 20Z-01Z WHEN SCT TSRA ARE POSSIBLE WITH BASES 8000 FEET AND ISOLD TOPS TO 40000 FEET. && .SGX WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC...PALMER AVIATION/MARINE...MM NWS ON THE WEB AT WEATHER.GOV/SANDIEGO
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 300 AM PDT SAT AUG 27 2011 CAZ042-043-048-050-055>058-060>062-280100- ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN DIEGO COUNTY VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS- RIVERSIDE COUNTY MOUNTAINS-SANTA ANA MOUNTAINS AND FOOTHILLS- SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS- COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS- 300 AM PDT SAT AUG 27 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ALL OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TODAY AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH EARLY EVENING FOR THE MOUNTAINS...DESERTS...AND INLAND VALLEYS. THE FLASH FLOOD POTENTIAL INDEX IS MODERATE...THUNDERSTORMS ARE EXPECTED TO DEVELOP AND ISOLATED FLASH FLOODING IS POSSIBLE. FOR INLAND AREAS...IT WILL BE HOT AND HUMID THIS AFTERNOON. AVOID STRENUOUS OUTDOOR ACTIVITY IF POSSIBLE. IF YOU HAVE TO BE OUTSIDE...DRINK PLENTY OF NON-ALCOHOLIC...NON-CAFFEINATED FLUIDS. WEAR LIGHTWEIGHT LOOSE-FITTING CLOTHING. WEAR A HAT TO SHIELD YOURSELF FROM THE SUN...AND USE SUN SCREEN TO REDUCE POSSIBLE SUNBURN. TAKE ADVANTAGE OF AIR CONDITIONING AND SHADE IF POSSIBLE. NEVER LEAVE CHILDREN OR PETS IN ENCLOSED VEHICLES...EVEN BRIEFLY. THIS WEATHER COULD BE DEADLY FOR UNPREPARED CAMPERS OR HIKERS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY FOR SUNDAY...CONTINUED HOT AND HUMID FOR INLAND AREAS. .SPOTTER INFORMATION STATEMENT... SKYWARN WEATHER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EARLY EVENING. MARTIN
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 1230 PM PDT SAT AUG 27 2011 CAZ048-056-272030- RIVERSIDE COUNTY MOUNTAINS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS -THE INLAND EMPIRE- 1230 PM PDT SAT AUG 27 2011 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN RIVERSIDE COUNTY UNTIL 130 PM PDT... AT 1221 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES WEST OF ANZA...OR 19 MILES SOUTHEAST OF HEMET...MOVING NORTH AT 10 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. STRONG WINDS CAN CAUSE DAMAGE TO POWERLINES AND OBJECTS NOT SECURED. THIS STORM IS ALSO CAPABLE OF PRODUCING BRIEF HEAVY RAIN...AND SOME LOCALIZED FLOODING. AREAS AFFECTED BY THIS STORM INCLUDE...LAKE HEMET. LAT...LON 3371 11698 3375 11666 3345 11666 3343 11688 TIME...MOT...LOC 1929Z 166DEG 8KT 3354 11679 PALMER
The national radar mosaic for the moment the first event began.
1 wildfire. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2011Every state in 2011This day in weather historyWarnings in California, August 2011
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: 340277.