Weather Alert in California
Special Weather Statement issued July 29 at 6:46PM PDT by NWS San Francisco CA
AREAS AFFECTED: San Francisco; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
DESCRIPTION: ...TSUNAMI ADVISORY IS IN EFFECT FROM THE SONOMA COASTLINE DOWN THROUGH THE BIG SUR COASTLINE INCLUDING SF AND MONTEREY BAY... * LOCAL IMPACTS... For people in the advisory area...A tsunami capable of producing strong currents that may be hazardous to swimmers, boats, and coastal structures is expected. * RECOMMENDED ACTIONS... For people in the advisory area...If you are located in this coastal area, move off the beach and out of harbors and marinas. Do not go to the coast to watch the tsunami. Be alert to instructions from your local emergency officials * FORECAST TSUNAMI START TIMES... Monterey California 1215 AM PDT on Jul 30 San Francisco California 1240 AM PDT on Jul 30 Tsunamis often arrive as a series of waves or surges which could be dangerous for many hours after the first wave arrival. The first tsunami wave or surge may not be the highest in the series. * FORECAST PEAK TSUNAMI WAVE HEIGHTS... Monterey California less than 1 ft San Francisco California less than 1 ft * PRELIMINARY EARTHQUAKE INFORMATION... An earthquake occurred with a preliminary magnitude of 8.7. This product will be updated as new information becomes available. Stay tuned to your local news source and NOAA weather radio for further information and updates.
INSTRUCTION: N/A
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Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
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