A small microburst damaged six homes on Agosto Street and Marzo Street in Otay Mesa. The microburst blew over trees and fences, dislodged roof tiles, damaged a door, and destroyed a shed.
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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.
A small microburst damaged six homes on Agosto Street and Marzo Street in Otay Mesa. The microburst blew over trees and fences, dislodged roof tiles, damaged a door, and destroyed a shed. This event was not associated with any thunderstorm.
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 Dec 20, 9:30 PM PST, 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 930 PM PST THU DEC 20 2007 .SYNOPSIS...A COLD FRONT MOVING THROUGH WILL CAUSE SCATTERED SHOWERS TONIGHT WITH GUSTY WINDS IN THE MOUNTAINS AND DESERTS. OFFSHORE FLOW WILL DEVELOP LATE TONIGHT AND FRIDAY MORNING FOR MOSTLY CLEAR SKIES AND LOCAL STRONG GUSTY WINDS THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES. DRY WEATHER WITH PERIODS OF GUSTY OFFSHORE WINDS WILL PREVAIL THROUGH THE MIDDLE OF NEXT WEEK. WINTER BEGINS AT 1008 PM PST FRIDAY. && .DISCUSSION...FOR SOUTHWEST CALIFORNIA INCLUDING SAN DIEGO... ORANGE...SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES. .SHORT TERM (TONIGHT-SUN)...A WEAKENING COLD FRONT WAS MOVING THROUGH THE AREA THIS EVENING WITH SCATTERED LIGHT SHOWERS MOVING INTO SAN DIEGO COUNTY AND BEGINNING TO TAPER OFF IN ORANGE COUNTY. THERE WERE GUSTY WINDS TO ABOUT 40 MPH ACROSS THE MOUNTAINS AND INTO THE DESERTS. THE 00Z NKX SOUNDING SHOWED A LOW LEVEL MOIST LAYER TO ABOUT 6500 FT WITH STRONG W TO SW WINDS ALOFT. ONSHORE GRADIENTS AND TRENDS WITH ABOUT 5 MB SAN-IPL. THE PASSING UPPER TROUGH WITH AN ASSOCIATED COLD FRONT...COMBINED WITH A DEEP LOW LEVEL MOISTURE LAYER AND OROGRAPHICS WILL CAUSE SCATTERED SHOWERS OVER AND W OF THE MOUNTAINS TONIGHT. RAINFALL TOTALS WILL RANGE FROM A FEW HUNDREDTHS OF AN INCH NEAR THE COAST UP TO ABOUT A QUARTER OF AN INCH ON SOME W FACING MOUNTAIN SLOPES. THE SNOW LEVEL WILL LOWER TO NEAR 4000 FT BY EARLY FRI MORNING...BUT MOST OF THE PRECIP WILL BE OVER BY THEN. THE WINDS WILL RAPIDLY TURN OFFSHORE EARLY FRI MORNING WITH LOCAL GUSTS TO 50 MPH THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES. CURRENT WIND ADVISORIES FOR THE MOUNTAINS AND INLAND EMPIRE LOOK OK. THERE WILL ALSO BE LOCAL STRONG N WINDS THROUGH THE SRN DESERTS TONIGHT INTO FRI MORNING AND A WIND ADVISORY IS IN EFFECT THERE AS WELL. THE COOL OFFHORE FLOW WILL NOT PROVIDE MUCH WARMING FRI. WEAKER OFFSHORE FLOW WITH HIGH PRESSURE ALOFT WILL RESULT IN WARMING SAT AND SUN. && .LONG TERM (MON-THU)...WEAK OFFSHORE FLOW MON WILL STRENGTHEN TUE AFTER A TROUGH MOVES PAST TO THE NE. WEAKER OFFSHORE FLOW WILL CONTINUE THROUGH THU FOR CONTINUED DRY WEATHER. THE FIRE WEATHER HAZARD WILL INITIALLY BE MODERATED BY RECENT RAIN BUT COULD INCREASE A LITTLE TUESDAY WITH THE STRONGER OFFSHORE FLOW. && .AVIATION... 210500Z...COLD FRONT MOVING QUICKLY THRU SOCAL THIS EVENING. LOW STRATUS CLOUD BASES AND AREAS OF LIGHT RAIN WERE OCCURRING NEAR AND IN ADVANCE OF THE FRONTAL PASSAGE. TERRAIN AND MOUNTAINS OBSCURED IN CLOUDS/FOG AND LIGHT PRECIP. BASES APPROX 1500 TO 2500 FT MSL AND LOCALLY DOWN TO 800 FT. AREAS OF 3-5SM VISIBILITY IN RAIN AND LOCAL 1-2SM AT COASTAL AND INLAND VALLEY AIRPORTS. THE FRONT WILL CONTINUE AWAY TO THE EAST LATER TONIGHT WITH STRATUS GRADUALLY CLEARING OUT IN MOST AREAS BY 12Z. ON FRIDAY EXPECT MOSTLY CLEAR SKIES WITH LOCALLY STRONG GUSTY NORTH-NORTHEAST WINDS NEAR AND BELOW THE PASSES AND CANYONS. WINDS AT 10K FT WEST 30-40KT SHIFTING TO N BY FRI MORN. && .MARINE... WEST-NORTHWEST SWELL WILL BUILD THRU FRIDAY MORNING AND BRING INCREASED SURF TO THE BEACHES OF SAN DIEGO COUNTY WITH SOME INCREASE IN SURF ALONG THE ORANGE COUNTY BEACHES AS WELL. THE SWELL WILL SUBSIDE DURING THE EVENING ON FRIDAY. ALSO...MORNING ASTRONOMICAL HIGH TIDES OF 7 FEET OR HIGHER ARE EXPECTED BEGINNING FRIDAY MORNING AND CONTINUING THRU CHRISTMAS DAY. THIS COULD BRING SOME MINOR TIDAL OVERFLOW TO LOW LYING BEACH AREAS DURING THE MORNING HIGH TIDES. && .SGX WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY UNTIL 10 AM PST FRIDAY FOR COACHELLA VALLEY AND SAN DIEGO COUNTY DESERTS. SEE LAXNPWSGX. WIND ADVISORY UNTIL 2 PM PST FRIDAY FOR THE MOUNTAINS AND INLAND EMPIRE. SEE LAXNPWSGX. COASTAL FLOOD ADVISORY UNTIL 2 PM PST TUESDAY FOR ORANGE COUNTY COASTAL AREAS AND SAN DIEGO COUNTY COASTAL AREAS. SEE LAXCFWSGX. SMALL CRAFT ADVISORY UNTIL 7 AM PST FRIDAY FOR THE OUTER WATERS. SEE LAXCWFSGX. && PUBLIC...DA AVIATION...LAVIS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 4O0 PM PST THU DEC 20 2007 CAZ042-043-048-050-055>058-060>062-PZZ750-775-210000- 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- COASTAL WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER AND OUT 30 NM- WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER EXTENDING 30 TO 60 NM OUT INCLUDING SAN CLEMENTE ISLAND- 4O0 PM PST THU DEC 20 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST CALIFORNIA. .DAY ONE...REMAINDER OF TODAY AND TONIGHT A WIND ADVISORY IS IN EFFECT FOR THE MOUNTAINS AND DESERTS FOR STRONG WEST WINDS THROUGH THIS EVENING. THE WINDS WILL SHIFT NORTHEAST LATER TONIGHT...BRINGING LOCAL GUSTY OFFSHORE WINDS TO THE MOUNTAIN CANYONS AND PASSES AND TO THE INLAND EMPIRE AFTER MIDNIGHT. SEE LAXNPWSGX FOR DETAILS. A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE OUTER COASTAL WATERS. SEE LAXCWFSGX FOR DETAILS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH THURSDAY OFFSHORE FLOW WILL PREVAIL FRIDAY AND SATURDAY WITH LOCAL STRONG GUSTY WINDS THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES. LOCAL STRONG OFFSHORE WINDS ARE ALSO EXPECTED MONDAY NIGHT AND TUESDAY. A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE OUTER COASTAL WATERS FRIDAY MORNING. SEE LAXCWFSGX FOR DETAILS. HIGH ASTRONOMICAL TIDES AND ABOVE NORMAL SURF MAY CAUSE MINOR TIDAL OVERFLOW IN THE COASTAL AREAS DURING THE MORNINGS FRIDAY THROUGH TUESDAY. SEE LAXCFWSGX FOR DETAILS. THERE WILL ALSO BE AN INCREASED RIP CURRENT RISK. .SPOTTER INFORMATION STATEMENT...SKYWARN WEATHER ACTIVATION IS NOT REQUESTED FOR THIS AREA...HOWEVER WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.
The San Diego radar (KNKX), 39 km away, was scanning. The volume nearest the first event began at 06:24 UTC.
1 thunderstorm wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2007Every state in 2007This day in weather historyWarnings in California, December 2007
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: 72026.