Alert archive / California / Heavy Snow Warnings in 2008
Heavy Snow Warning 1, NWS San Diego, CA
NWS San Diego, CA issued this heavy snow warning at Jan 5, 2008, 5:05 AM PST for Riverside County, San Bernardino County, California. It was in force for 51 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 5, 2008, 5:05 AM PST (13:05 UTC)
- Expired
- Jan 7, 2008, 8:00 AM PST
- In force
- 51 hr
- Issued by
- NWS San Diego, CA
The radar
The Santa Ana Mts radar (KSOX), 152 km from the middle of the area, began a volume at 13:07 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, 1.1 hours before the alert went out and 195 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 579 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 401 m²/s²
- 0-3 km storm-relative helicity
- 426 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heavy snow warning 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 heavy snow warning went out at Jan 4, 9:30 PM PST, 7 hours 35 minutes earlier.
Area forecast discussion, Jan 4, 9:30 PM PST, 7 hours 35 minutes before
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</html>Hazardous weather outlook, Jan 4, 5:45 PM PST, 11 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 545 PM PST FRI JAN 4 2008 CAZ042-043-048-050-055>058-060>062-PZZ750-775-051200- 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- 545 PM PST FRI JAN 4 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST CALIFORNIA AND PZ. .DAY ONE...TONIGHT A PACIFIC STORM WILL BRING HEAVY RAIN...FLOODING AND STRONG WINDS. SEE LAXFFASGX...LAXNPWSGX AND LAXCWFSGX OR DETAILS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY RAIN TAPERING TO SHOWERS SATURDAY. SCATTERED SHOWERS SATURDAY NIGHT AND SUNDAY BECOMING MORE WIDESPREAD SUNDAY EVENING. HIGH SURF INTO TUESDAY. SEE LAXFFASGX...LAXNPWSGX...LAXCWFSGX AND LAXCFWSGX FOR DETAILS. .SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION HAS BEEN REQUESTED. MOEDE
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 4, 7:54 PM PST | Flash Flood Warning | SGX | Riverside, San Bernardino | 9 hr |
| Jan 5, 1:25 AM PST | Flash Flood Warning | SGX | Orange | 3 hr |
| Jan 5, 2:36 AM PST | Flash Flood Warning | SGX | San Bernardino | 114 min |
| Jan 5, 4:00 AM PST | Flash Flood Warning | SGX | San Diego | 4 hr |
| Jan 5, 4:21 AM PST | Flash Flood Warning | SGX | San Bernardino | 4 hr |
| Jan 5, 4:37 AM PST | Flash Flood Warning | SGX | Orange | 4 hr |
| Jan 5, 5:18 AM PST | Dense Fog Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 51 hr |
| Jan 5, 10:25 AM PST | Flash Flood Warning | SGX | San Diego | 2 hr |
Nearby
Heavy Snow Warnings in California, 2008Every heavy snow warning in 2008
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.