Alert archive / California / Special Weather Statements in 2012
Special Weather Statement, NWS Los Angeles, CA
NWS Los Angeles, CA issued this special weather statement at Oct 11, 2012, 6:31 AM PDT for Los Angeles County, California. It was in force for 44 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
- Oct 11, 2012, 6:31 AM PDT (13:31 UTC)
- Expired
- Oct 11, 2012, 7:15 AM PDT
- In force
- 44 min
- Issued by
- NWS Los Angeles, CA
County Los Angeles County, CA
The radar
The Santa Ana Mts radar (KSOX), 33 km from the middle of the area, began a volume at 13:33 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, 1.5 hours before the alert went out and 144 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
- 64 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 719 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 54 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 Los Angeles, CA wrote its last area forecast discussion before this special weather statement went out at Oct 11, 4:40 AM PDT, 1 hour 51 minutes earlier.
Area forecast discussion, Oct 11, 4:40 AM PDT, 1 hour 51 minutes before
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</html>Hazardous weather outlook, Oct 11, 6:00 AM PDT, 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 600 AM PDT THU OCT 11 2012 CAZ034>041-044>046-051>054-059-087-088-547-548-121300- SAN LUIS OBISPO COUNTY CENTRAL COAST- SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY- SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST- LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES- VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS- SANTA MONICA MOUNTAINS RECREATIONAL AREA- SAN LUIS OBISPO COUNTY MOUNTAINS- SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- ANTELOPE VALLEY-CATALINA ISLAND-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- 600 AM PDT THU OCT 11 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA. .DAY ONE... TODAY AND TONIGHT THERE WILL BE A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THIS EVENING. SNOW LEVELS WILL BE ABOVE 7000 FEET. RAINFALL WILL BE LIGHT EXCEPT UNDER THUNDERSTORMS. * SPECIAL WEATHER STATEMENT..SEE WWUS86 KLOX - SPSLOX FOR DETAILS * .DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. RORKE
In the hours before
Special weather statement, Oct 11, 4:09 AM PDT, 2 hours 22 minutes before
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</html>Special weather statement, Oct 11, 6:31 AM PDT, 0 minutes before
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</html>The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 4:02 AM PDT | Special Marine Warning | LOX | 28 min | |
| Oct 11, 4:09 AM PDT | Special Weather Statement | LOX | Los Angeles | 51 min |
| Oct 11, 5:41 AM PDT | Special Marine Warning | LOX | 49 min | |
| Oct 11, 6:26 AM PDT | Special Marine Warning | LOX | 34 min | |
| Oct 11, 6:32 AM PDT | Special Weather Statement | LOX | Los Angeles | 43 min |
| Oct 11, 8:32 AM PDT | Special Marine Warning | LOX | 58 min | |
| Oct 11, 8:50 AM PDT | Special Marine Warning | LOX | 55 min | |
| Oct 11, 10:00 AM PDT | Special Marine Warning | LOX | 60 min | |
| Oct 11, 12:39 PM PDT | Areal Flood Advisory | LOX | Los Angeles | 111 min |
| Oct 11, 12:54 PM PDT | Areal Flood Advisory | LOX | 111 min | |
| Oct 11, 1:02 PM PDT | Flash Flood Warning | LOX | Ventura | 3 hr |
| Oct 11, 1:35 PM PDT | Areal Flood Advisory | LOX | Los Angeles | 115 min |
| Oct 11, 1:51 PM PDT | Areal Flood Advisory | LOX | Santa Barbara | 114 min |
| Oct 11, 2:47 PM PDT | Special Weather Statement | LOX | Los Angeles | 28 min |
| Oct 11, 2:55 PM PDT | Flash Flood Warning | LOX | Los Angeles | 98 min |
| Oct 11, 3:29 PM PDT | Special Weather Statement | LOX | Los Angeles | 31 min |
| Oct 11, 3:35 PM PDT | Areal Flood Advisory | LOX | Los Angeles | 115 min |
| Oct 11, 4:37 PM PDT | Flash Flood Warning | LOX | Los Angeles | 113 min |
| Oct 11, 4:46 PM PDT | Special Marine Warning | LOX | 29 min | |
| Oct 11, 4:54 PM PDT | Special Weather Statement | LOX | Orange | 51 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.