Alert archive / California / Special Weather Statements in 2012
Special Weather Statement, NWS San Diego, CA
NWS San Diego, CA issued this special weather statement at Apr 13, 2012, 1:20 PM PDT for Orange County, California. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 13, 2012, 1:20 PM PDT (20:20 UTC)
- Expired
- Apr 13, 2012, 2:15 PM PDT
- In force
- 55 min
- Issued by
- NWS San Diego, CA
County Orange County, CA
The radar
The Santa Ana Mts radar (KSOX), 37 km from the middle of the area, began a volume at 20:20 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 8.3 hours before the alert went out and 134 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 608 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, 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 this special weather statement went out at Apr 13, 9:00 AM PDT, 4 hours 20 minutes earlier.
Area forecast discussion, Apr 13, 9:00 AM PDT, 4 hours 20 minutes before
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</html>Hazardous weather outlook, Apr 13, 4:40 AM PDT, 8 hours 40 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 440 AM PDT FRI APR 13 2012 CAZ042-043-048-050-057-PZZ750-775-140000- ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-SAN DIEGO COUNTY VALLEYS-SANTA ANA MOUNTAINS AND FOOTHILLS- 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- 440 AM PDT FRI APR 13 2012 ...SMALL CRAFT ADVISORIES IN EFFECT THROUGH SATURDAY EVENING... ...WIND ADVISORIES IN EFFECT LATE MORNING THROUGH THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TODAY AND TONIGHT A WINTER STORM WILL MOVE ACROSS THE AREA TODAY AND TONIGHT BRINGING GUSTY WINDS...MODERATE TO HEAVY RAIN...THUNDERSTORMS WITH SMALL HAIL...AND ISOLATED WATERSPOUTS. URBAN AND SMALL STREAM FLOODING IS POSSIBLE FROM LATE MORNING THROUGH THE EVENING HOURS. SNOW ACCUMULATIONS ARE LIKELY AT ELEVATIONS ABOVE 4000 FEET IN THE SANTA ANA MOUNTAINS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY MOST SHOWERS WILL END BY SATURDAY AFTERNOON. GUSTY WEST TO NORTHWEST WINDS WILL DIMINISH SATURDAY EVENING. EAST TO MODERATE NORTHEAST WINDS ARE POSSIBLE THROUGH AND BELOW CANYONS AND PASSES SUNDAY NIGHT INTO TUESDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE ENCOURAGED TO STAY TUNED AS A SKYWARN ACTIVATION MAY BE REQUIRED TODAY. CAZ060>062-140000- APPLE AND LUCERNE VALLEYS-COACHELLA VALLEY- SAN DIEGO COUNTY DESERTS- 440 AM PDT FRI APR 13 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. ...HIGH WIND WARNINGS IN EFFECT TODAY AND TONIGHT... .DAY ONE...TODAY AND TONIGHT DAMAGING WINDS LIKELY THROUGH SATURDAY MORNING. AREAS OF BLOWING SAND WITH VISIBILITY NEAR ZERO. THUNDERSTORMS POSSIBLE THIS EVENING. WASHES AND CREEKS MAY BE RUNNING FULL HIS EVENING AND INTO THE NIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WINDS DIMINISHING SATURDAY. NORMALLY DRY WASHES MAY STILL BE FLOWING THROUGH TUESDAY DUE TO RUNOFF FROM MELTING SNOW. OTHERWISE...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE ENCOURAGED TO STAY TUNED AS A SKYWARN ACTIVATION MAY BE NEEDED FRIDAY. CAZ055-056-058-140000- SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY MOUNTAINS- 440 AM PDT FRI APR 13 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TODAY AND TONIGHT HEAVY RAIN AND SNOW SPREADING EAST AND SOUTH ACROSS THE AREA BETWEEN MID MORNING AND THIS AFTERNOON. PERIODS OF HEAVY RAIN AND SNOW WITH THUNDERSTORMS CONTINUING INTO THE EVENING. SEVERAL INCHES OF SNOW ACCUMULATING ON MAJOR HIGHWAYS AND INTERSTATES IN THE PASSES AND OVER THE SUMMITS. WHITEOUT CONDITIONS POSSIBLE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY MOST SNOW SHOWERS ENDING BY SATURDAY AFTERNOON. RAPID SNOW MELT EXPECTED SUNDAY THROUGH TUESDAY. OTHERWISE...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE ENCOURAGED TO STAY TUNED AS A SKYWARN ACTIVATION MAY BE NEEDED FRIDAY. BALFOUR
In the hours before
Local storm report, Apr 13, 12:02 PM PDT, 1 hour 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1202 PM PDT FRI APR 13 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1151 AM NON-TSTM WND GST 7 E LUCERNE VALLEY 34.44N 116.84W
04/13/2012 E60 MPH SAN BERNARDINO CA TRAINED SPOTTER
WIND GUST OF 60 MPH FOR THE PAST FEW MINUTES. ELECTRICAL
POWER POLLS MADE OF WOOD LOOK LIKE THEY ARE READY TO
BREAK.
&&
MWATKINSSpecial weather statement, Apr 13, 1:20 PM PDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
120 PM PDT FRI APR 13 2012
CAZ042-132115-
ORANGE COUNTY COASTAL AREAS-
120 PM PDT FRI APR 13 2012
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ORANGE COUNTY UNTIL
215 PM PDT...
AT 116 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR SANTA ANA. THIS STORM WAS NEARLY STATIONARY.
HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM.
AREAS AFFECTED BY THIS STORM INCLUDE...STANTON...FULLERTON...BUENA
PARK...CYPRESS...LOS ALAMITOS...LA HABRA AND ROSSMOOR.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 3376 11810 3378 11811 3394 11795 3379 11784
3370 11804 3375 11812
TIME...MOT...LOC 2020Z 180DEG 0KT 3378 11789
MMThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 11:04 PM PDT | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 43 hr |
| Apr 13, 1:09 PM PDT | Special Marine Warning | SGX | 51 min | |
| Apr 13, 1:50 PM PDT | Severe Thunderstorm Warning | SGX | Orange | 25 min |
| Apr 13, 2:01 PM PDT | Special Marine Warning | SGX | 17 min | |
| Apr 13, 2:13 PM PDT | Special Weather Statement | SGX | Orange | 62 min |
| Apr 13, 2:14 PM PDT | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 106 min |
| Apr 13, 2:34 PM PDT | Special Weather Statement | SGX | Orange | 56 min |
| Apr 13, 2:45 PM PDT | Special Marine Warning | SGX | 90 min | |
| Apr 13, 3:07 PM PDT | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 113 min |
| Apr 13, 3:25 PM PDT | Special Weather Statement | SGX | Orange | 5 min |
| Apr 13, 3:33 PM PDT | Special Weather Statement | SGX | San Diego | 57 min |
Nearby
Special Weather Statements in California, 2012Every special weather statement in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.