Issued Zones: Eastern San Bernardino County / CO River Zone Needles …
Site: Southern California Weather Force has issued a Tornado Watch effective now for later Wednesday
Date: 10/3/18 at 7:30am PT
Forecast: Pacific Storm Ophelia will be moving into the forecast area. It is placing itself in the Martin Storm Diamond, a sweet spot southwest of the Southern California area. Thunderstorms are expected as a result.
For this watch zone, strong lifting later today/evening will promote thunderstorms. Instability under the early October sky will give way to severe thunderstorms forming. These storms will form in the upper divergent section of the storm itself and move off to the north and northeast.
Storms developing will also have a low level moisture zone.. and this .. with low level shearing will promote the risk of tornadoes.
In addition to the tornado risk, damaging winds and larger hail is also possible along with frequent lightning. Traveling in this area must be met with extreme caution.
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10 mile rule: These alerts issued on this site means that within your zone and 10 miles from you will see the event forecast for. You may or may not see the event but it means you are in the zone or 10 miles from where someone will.