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[实况关注] 北加州沿海地区也出现了高温天气

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发表于 2010-8-24 01:12 | 显示全部楼层 |阅读模式
位于旧金山的美国国家气象服务中心分中心周一发布了高温预警
Issued by The National Weather Service
San Francisco/Monterey, CA
3:45 am PDT, Mon., Aug. 23, 2010

... EXCESSIVE HEAT WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED AN EXCESSIVE HEAT WATCH... WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING.

* TEMPERATURE: 90S AROUND THE BAY TO 105 INLAND VALLEYS.

* IMPACTS: HEAT EXHAUSTION OR POSSIBLE HEAT STROKE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS EXCESSIVE HEAT WATCH IS BEING ISSUED UTILIZING A HEAT HEALTH WARNING SYSTEM. IT IS SPECIFIC TO THE AREAS INCLUDED IN THIS EXCESSIVE HEAT WATCH. IT IS TARGETED AT THE ELDERLY AND VERY YOUNG... AND THE INFIRMED... WHO MIGHT BE MUCH MORE SENSITIVE TO HEAT AND THUS AT GREATER RISK. INDIVIDUALS WHO FALL INTO THIS CATEGORY SHOULD BE ESPECIALLY CAREFUL BY DRINKING PLENTY OF WATER... SEEKING A COOLER LOCATION FOR THE DAY IF NO AIR CONDITIONING IS AVAILABLE IN YOUR LIVING QUARTERS... AND OR ASK FOR A FRIEND OR RELATIVE TO CHECK ON YOU FREQUENTLY. IT IS VERY IMPORTANT THAT RELATIVES CHECK FREQUENTLY ON FRIENDS OR RELATIVES WHO MIGHT BE MORE PRONE TO HEAT SENSITIVITY. YOUNG CHILDREN AND PETS SHOULD NEVER BE LEFT IN VEHICLES UNDER ANY CIRCUMSTANCES DURING WARM OR HOT WEATHER. BEAT THE HEAT CHECK THE BACK SEAT!

;;

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... EXCESSIVE HEAT WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR ALL AREAS EXCEPT THE IMMEDIATE COAST...

.STRONG HIGH PRESSURE WILL BRING SIGNIFICANTLY WARMER TEMPERATURES TO THE AREA ON MONDAY AND TUESDAY. TEMPERATURES WILL BE THE HOTTEST ON TUESDAY WITH HIGHS REACHING THE 90S TO AS HIGH AS 107.
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 楼主| 发表于 2010-8-24 01:20 | 显示全部楼层
湾区的高温天气可以说较少,但并不罕见。
说并不罕见,因为几乎每年都有几天,在强大的暖高压和焚风的影响下,出现高温。如果大家仔细看气象统计,会发现湾区一带虽然夏季均温低(本人所在半岛和南湾交界地区最热月均温20度以下,旧金山市区更是要低2-3摄氏度),但夏季极端高温记载却并不低,经常突破40度,这比夏季均温类似的西欧、中欧一带高了不是一点半点。

今年盛夏季节总体偏凉,七月底以来,25摄氏度以上的气温都极少见。上次突破华氏90度还在7月初。这回8月下旬的增温,也算是最后享受一下夏天。

但这种高温在当地一般只能持续2-3天,过后最高气温又降到25摄氏度以下,对较低的月均温影响较小。

还有一个有趣之处:高温出现之前之后,天气都是一样的晴朗,对气象不敢兴趣的人,看不出有天气系统过境,只会感觉体感的温差。殊不知在平静的蓝天下,原来还有这么多有趣的天气现象!
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发表于 2010-8-24 08:18 | 显示全部楼层
那个地方也有焚风?
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 楼主| 发表于 2010-8-24 08:37 | 显示全部楼层
高山向山谷或平原等低海拔地区吹的风,很多地方都有啊。
只不过和我们风向相反,加州沿海一带的焚风自东向西吹。
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 楼主| 发表于 2010-8-25 03:35 | 显示全部楼层
8月23日的实测结果:

旧金山市区32度
San Jose 34度
Palo Alto 35度

温度已换算成摄氏。
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 楼主| 发表于 2010-8-25 03:36 | 显示全部楼层
高温预警继续生效:
Issued by The National Weather Service
San Francisco/Monterey, CA
11:14 am PDT, Tue., Aug. 24, 2010

... HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

A HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING.

* TEMPERATURE: MID 90S TO AROUND 100 NEAR THE BAY TO 110 INLAND.

* IMPACTS: HEAT EXHAUSTION AS WELL AS COMPLICATIONS FROM ANY PREEXISTING CONDITIONS ESPECIALLY FOR THE ELDERLY AND INFIRM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS HEAT ADVISORY IS BEING ISSUED UTILIZING A HEAT HEALTH WARNING SYSTEM. IT IS SPECIFIC TO THE AREAS INCLUDED IN THIS HEAT ADVISORY. IT IS TARGETED AT THE ELDERLY AND VERY YOUNG... AND THE INFIRM... WHO MIGHT BE MUCH MORE SENSITIVE TO HEAT AND THUS AT GREATER RISK. INDIVIDUALS WHO FALL INTO THIS CATEGORY SHOULD BE ESPECIALLY CAREFUL BY DRINKING PLENTY OF WATER... SEEKING A COOLER LOCATION FOR THE DAY IF NO AIR CONDITIONING IS AVAILABLE IN YOUR LIVING QUARTERS... AND OR ASK FOR A FRIEND OR RELATIVE TO CHECK ON YOU FREQUENTLY. IT IS VERY IMPORTANT THAT RELATIVES CHECK FREQUENTLY ON FRIENDS OR RELATIVES WHO MIGHT BE MORE PRONE TO HEAT SENSITIVITY. YOUNG CHILDREN AND PETS SHOULD NEVER BE LEFT IN VEHICLES UNDER ANY CIRCUMSTANCES DURING WARM OR HOT WEATHER. BEAT THE HEAT CHECK THE BACK SEAT!

;;

More Information
.STRONG HIGH PRESSURE WILL BRING TO HOT TEMPERATURES TO THE AREA TODAY AND AGAIN WEDNESDAY. HIGH TEMPERATURES WILL RANGE FROM THE UPPER 80S TO AROUND 100 AROUND THE BAYS TO NEAR 110 WARMEST INTERIOR VALLEYS TODAY AND AGAIN ON WEDNESDAY ALTHOUGH SLIGHT COOLING IS POSSIBLE AT THE IMMEDIATE COAST.

Palo Alto, San Jose今天的高温预报高达38摄氏度。
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发表于 2010-8-25 09:42 | 显示全部楼层
其实湾区也就热了三天。周六还是很冷的天气,还有点风,穿短袖是招架不住的,还有人穿毛衣、戴围巾。不过后两天云雾完全消散,气温猛升,这两天已经稍有点加州内陆地区的感觉了。
南加州已经热了接近一个星期了,昨天LA Downtown到了37度。不过副高将在周末受西风槽影响减弱,西风槽后的冷平流和地面的上岸风将会使湾区和南加沿海都大幅度降温,最高回到30度以下,海边甚至可能在20度以下。
从\'95Kent开始追风,经历\'99寒潮和\'05的322飑线——春雨夏风秋干冬寒,岁月悄然已过。
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 楼主| 发表于 2010-8-25 11:41 | 显示全部楼层

回 6楼(temperature) 的帖子

对。周四的气温将比这三天有大幅度下降。晚上会重回多云状态。
话说湾区夏季的天气大多数时间简直可以看天认时间。如果起床就是艳阳高照,估计是睡了大懒觉,9点以后了。9点之前一般都阴云密布,阴冷。
当然这两天受暖高压控制就除外了。晚上满天星斗。
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发表于 2010-8-25 11:54 | 显示全部楼层
还阴冷
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发表于 2010-8-25 15:40 | 显示全部楼层
加州一带有一个高压中心
2010082500_500oa_naconf.gif
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