California, 2009

Wildfire in California, May 12, 2009

May 12, 2009 · NWS SGX · 1 event in 1 county or zone

A small fire fueled by gusty winds destroyed a shed and an abandoned house in Otay Mesa.

Where it happened

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

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.

What happened

The episode as NWS SGX wrote it up.

A small fire fueled by gusty winds destroyed a shed and an abandoned house in Otay Mesa.

What forecasters said that day

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 May 12, 8:30 AM PST, 3 hours 15 minutes earlier.

Area forecast discussion, May 12, 8:30 AM PST, 3 hours 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
930 AM PDT TUE MAY 12 2009

.SYNOPSIS...THE MARINE LAYER AND ONSHORE FLOW WILL CONTINUE LOW
CLOUDS AND FOG WEST OF THE MOUNTAINS DURING THE NIGHTS AND
MORNINGS...BECOMING LESS EXTENSIVE BY LATE THIS WEEK. LOCAL GUSTY
WINDS IN THE MOUNTAINS AND DESERTS THIS AFTERNOON AND EVENING.
OTHERWISE...FAIR WITH DRY NORTHWEST FLOW ALOFT. HOT INLAND EARLY
NEXT WEEK UNDER STRONG HIGH PRESSURE.

&&

.DISCUSSION...FOR SOUTHWEST CALIFORNIA INCLUDING SAN DIEGO...
ORANGE...SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES.

.SHORT TERM (TODAY-FRIDAY)...LOW CLOUDS AND LOCAL FOG WERE INTO THE
COASTAL AND VALLEY AREAS THIS MORNING. CLEAR ELSEWHERE. THE 12Z NKX
SOUNDING HAD AN INVERSION BASED NEAR 2700 FT WITH WLY WINDS ALOFT.
ONSHORE GRADIENTS WITH ABOUT 7 MB SAN-IPL.

FLAT TO WEAKLY CYCLONIC W TO NW FLOW ALOFT THROUGH FRIDAY. THE
STRONG ONSHORE GRADIENTS TODAY WILL SLOWLY WEAKEN INTO THE END OF
THE WEEK. THIS WILL RESULT IN LOCAL STRONG GUSTY WINDS IN THE
MOUNTAINS AND DESERTS INTO TONIGHT. WEAKER BREEZY CONDITIONS DURING
THE AFTERNOONS AND EVENINGS WEDNESDAY THROUGH FRIDAY. THE MARINE
LAYER DEPTH WILL SLOWLY DECREASE. LOW CLOUDS AND FOG WILL GET INTO
MOST COASTAL AND VALLEY AREAS TONIGHT BUT SHOULD BE CONFINED TO THE
COASTAL AND FAR WRN VALLEYS BY THURSDAY NIGHT. THE WEAKENING ONSHORE
FLOW WILL RESULT IN SLIGHT WARMING IN MOST AREAS.

&&

.LONG TERM (SATURDAY-TUESDAY)...STRONG UPPER LEVEL HIGH PRESSURE IN
THE ERN PAC WILL MOVE OVER THE WRN STATES SATURDAY THROUGH MONDAY.
ONSHORE GRADIENTS WILL DECREASE AND TURN WEAKLY OFFSHORE BY EARLY
NEXT WEEK. THIS WILL RESULT IN A SHALLOWER MARINE LAYER AND WARMING
TREND. HOT INLAND EARLY NEXT WEEK AND THE WARMER INLAND VALLEYS
COULD GET NEAR 100 DEGREES. THERMALS AND LIMITED MID LEVEL MOISTURE
MAY RESULT IN AFTERNOON CU OVER THE MOUNTAINS. THE HOT AND DRY
WEATHER EARLY NEXT WEEK ALONG WITH LOCAL ELY BREEZES WILL ELEVATE
THE FIRE WEATHER HAZARD IN THE MOUNTAINS. A LITTLE COOLER TUESDAY AS
THE HIGH BREAKS DOWN.

&&

.AVIATION...
121400Z...MARINE LAYER DEPTH THIS MORNING WAS AROUND 2500 FEET. SOME
LOWERING IS EXPECTED TONIGHT AND WEDNESDAY TO AROUND 2000 FEET.
STRATUS WITH BASES AROUND 2000 FEET MSL SHOULD BREAK UP OVER THE
INLAND AREAS BETWEEN 16Z AND 17Z AND TO NEAR THE COAST BETWEEN 17Z
AND 19Z. LITTLE OR NO BREAK UP IS EXPECTED ALONG THE IMMEDIATE COAST
TODAY. STRATUS SHOULD PUSH BACK INLAND AFTER SUNSET WITH  INLAND
VALLEY AND MESA AIRPORTS GETTING CEILINGS BETWEEN 03Z AND 07Z...AND
REACH KONT BY 10Z. A LITTLE EARLIER BREAKUP IS EXPECTED ON
WEDNESDAY.

ABOVE THE MARINE LAYER...A MOSTLY CLEAR SKY WITH UNRESTRICTED
VISIBILITIES WILL CONTINUE THROUGH WEDNESDAY.  HORTON

&&

.SGX WATCHES/WARNINGS/ADVISORIES...NONE

&&

PUBLIC...ATKIN
AVIATION...HORTON

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 wildfire. Local standard time, as filed.

Wildfire, San Diego County Coastal Areas

When
May 12, 11:45 AM PST to 12:45 PM PST
Where
San Diego County Coastal Areas forecast zone
Reported by
Newspaper
Coordinates
33.028, -116.770 (the zone’s center; the record gives no point)

A four acre fire began around 1145 PST in Otay Mesa along Airway Road near Caliente Avenue. The fire spread through light grass and into a pile of tires. A shed and an abandoned house were destroyed by the blaze. The fire was contained by about 1245 PST. No injuries were reported.

What these are

Wildfire
A fire burning in wildland vegetation, with its acreage and damage where known.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in California in 2009Every state in 2009This day in weather historyWarnings in California, May 2009

Sources

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: 173054.