Alert archive / California / Heat Advisories in 2015
Heat Advisory 2, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this heat advisory at Jun 30, 2015, 9:02 AM PDT for 6 counties in California. It took effect at Jun 30, 2015, 10:00 AM PDT. It was in force for 35 hr.
The area
The counties it named.
The facts
- Issued
- Jun 30, 2015, 9:02 AM PDT (16:02 UTC)
- In effect from
- Jun 30, 2015, 10:00 AM PDT
- Expired
- Jul 1, 2015, 9:00 PM PDT
- In force
- 35 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Alameda County, CA, Contra Costa County, CA, Marin County, CA, Napa County, CA, Santa Clara County, CA, Sonoma County, CA
The radar
The Sacramento radar (KDAX), 77 km from the middle of the area, began a volume at 16:02 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
Reno, NV (KREV), launched 12:00Z, 4.0 hours before the alert went out and 394 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
- 2 J/kg
- Mixed-layer CIN
- -346 J/kg
- Mixed-layer LCL
- 2589 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this heat advisory went out at Jun 30, 4:25 AM PDT, 4 hours 37 minutes earlier.
Area forecast discussion, Jun 30, 4:25 AM PDT, 4 hours 37 minutes before
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</html>Hazardous weather outlook, Jun 30, 5:04 AM PDT, 3 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN FRANCISCO CA 504 AM PDT TUE JUN 30 2015 CAZ506-507-510>513-516>518-528-PZZ530-531-011215- NORTH BAY INTERIOR VALLEYS-NORTH BAY MOUNTAINS- EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND DIABLO RANGE- SANTA CRUZ MOUNTAINS-SANTA CLARA VALLEY...INCLUDING SAN JOSE- SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL PARK- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- SAN PABLO BAY SUISUN BAY THE WEST DELTA AND SAN FRANCISCO BAY NORTH OF THE BAY BRIDGE-SAN FRANCISCO BAY SOUTH OF THE BAY BRIDGE- 504 AM PDT TUE JUN 30 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CALIFORNIA AND PACIFIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT A BUILDING RIDGE OF HIGH PRESSURE WILL LEAD TO VERY WARM INLAND TEMPERATURES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE RIDGE OF HIGH PRESSURE WILL LEAD TO VERY WARM INLAND READINGS ON WEDNESDAY. .SPOTTER INFORMATION STATEMENT...
In the hours before
Special weather statement, Jun 30, 5:02 AM PDT, 4 hours before
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</html>Nearby
Heat Advisories in California, 2015Every heat advisory in 2015
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.