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[追击雷暴]美国中部4.26-27大规模强对流过程,龙卷风预报破产,飑线横扫之处最大阵风13-14级,最大冰雹直径4英寸 已确认:EF0:12 EF1:12

楼主#
更多 发布于:2016-04-25 21:56

图片:day2otlk_0600.gif

图片:day2probotlk_0600_any.gif


 ...SUMMARY...
   SIGNIFICANT SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS PARTS OF
   THE SOUTHERN AND CENTRAL GREAT PLAINS TUESDAY AFTERNOON INTO THE
   NIGHTTIME HOURS. TORNADOES...SOME STRONG...WILL BE POSSIBLE...IN
   ADDITION TO VERY LARGE HAIL AND DAMAGING WINDS.
ADDITIONAL ISOLATED
   STRONG STORMS ARE POSSIBLE ACROSS PARTS OF THE OHIO VALLEY TO THE
   MIDDLE ATLANTIC COAST REGION.

这个4月美国的强对流极其萎靡,终于在月底要迎来一波可看的过程。且对流活动中心位于堪萨斯俄克拉荷马等传统龙卷高发区...SPC已经比较高调地给了Moderate评级
[beta于2016-05-01 12:39编辑了帖子]
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禾愛糖
超强台风
超强台风
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1楼#
发布于:2016-04-25 23:25
評級應該是今年首次吧?
從前的我打倒今天的我。

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2楼#
发布于:2016-04-25 23:28
禾愛糖锛氃u級應該是今年首次吧?鍥炲埌鍘熷笘
之前2月23号那次评级也是Moderate
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海外追风者
论坛版主-副热带高压
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3楼#
发布于:2016-04-26 06:42
评级面积继续扩大。坐等明天好戏。GR2待命状态。
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4楼#
发布于:2016-04-26 14:23

图片:day1probotlk_1200_torn.gif

图片:day1probotlk_1200_hail.gif


...SUMMARY...
   SIGNIFICANT SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS PARTS OF
   THE SOUTHERN AND CENTRAL GREAT PLAINS THIS AFTERNOON INTO THE
   NIGHTTIME HOURS. TORNADOES...SOME STRONG...WILL BE POSSIBLE...IN
   ADDITION TO VERY LARGE HAIL AND DAMAGING WINDS.
ADDITIONAL ISOLATED
   STRONG TO SEVERE STORMS ARE POSSIBLE ACROSS PARTS OF THE OHIO VALLEY
   TO THE MIDDLE ATLANTIC COAST REGION.


最新评级已出,龙卷评级大面积10%,冰雹更是要爆@炸的节奏...相比起来大风还要好一点
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w8dtw
水汽
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5楼#
发布于:2016-04-26 16:18
西部落基山脉对气候影响
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6楼#
发布于:2016-04-27 03:47
THIS IS A PARTICULARLY DANGEROUS SITUATION


SPC10分钟前在奥州大部分地区和德州部分地区发了一报龙卷风消息报(Tornado Watch),并且注明这会是一个特别危险的天气局势。

URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 109
   NWS STORM PREDICTION CENTER NORMAN OK
   230 PM CDT TUE APR 26 2016

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * TORNADO WATCH FOR PORTIONS OF
     SOUTHWEST AND SOUTH CENTRAL THROUGH NORTH CENTRAL AND NORTHEAST
   OKLAHOMA
     WEST CENTRAL THROUGH NORTH CENTRAL TEXAS

   * EFFECTIVE THIS TUESDAY AFTERNOON FROM 230 PM UNTIL MIDNIGHT
     CDT. ...THIS IS A PARTICULARLY DANGEROUS SITUATION... * PRIMARY THREATS INCLUDE...
     SEVERAL TORNADOES AND A FEW INTENSE TORNADOES LIKELY
     WIDESPREAD LARGE HAIL AND SCATTERED VERY LARGE HAIL EVENTS TO 4
       INCHES IN DIAMETER EXPECTED
     WIDESPREAD DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
       TO 80 MPH POSSIBLE

   SUMMARY...NUMEROUS SEVERE THUNDERSTORMS EXPECTED TO RAPIDLY FORM IN
   THE NEXT COUPLE HOURS OVER WESTERN PART OF WATCH...INCLUDING A FEW
   STRONG SUPERCELLS CAPABLE OF VERY LARGE HAIL...DAMAGING WIND...AND
   TORNADOES. THE STORMS SHOULD MERGE INTO BROKEN LINES AND
   CLUSTERS...WITH EMBEDDED SUPERCELLS CONTINUING TO POSE A RISK FOR
   VERY LARGE HAIL...DAMAGING WIND.. AND A FEW TORNADOES AS THEY
   MOVE/DEVELOP EAST-NORTHEAST INTO TONIGHT.

   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
   MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHEAST OF
   PONCA CITY OKLAHOMA TO 35 MILES SOUTH SOUTHWEST OF BROWNWOOD
   TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
   WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
   AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
   THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
   AND POSSIBLE WARNINGS.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 106...WW 107...WW 108...

   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   600. MEAN STORM MOTION VECTOR 23040.


   ...CORFIDI


Tornadoes
Probability of 2 or more tornadoes
High (90%)
Probability of 1 or more strong (F2-F5) tornadoes
High (80%)
Wind
Probability of 10 or more severe wind events
High (90%)
Probability of 1 or more wind events > 65 knots
Mod (40%)
Hail
Probability of 10 or more severe hail events
High (>95%)
Probability of 1 or more hailstones > 2 inches
High (>95%)
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
High (>95%)
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论坛版主-副热带高压
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7楼#
发布于:2016-04-27 06:09
附一张云图
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8楼#
发布于:2016-04-27 12:32

图片:today.gif


图片:ww0109_radar.gif


今天中部形成了一道壮观的飑线,直接结果就是龙卷风特大差评,预报破产,目测只有几个EF0。冰雹确实比较给力,最大报告达到了4英寸(10.1厘米)另外也有数个90mph左右的飓风报告,报告中最大风力91mph。另外除了楼上发的,SPC还发了第二个PDS龙卷风警报。然而没什么卵用
[beta于2016-04-27 12:34编辑了帖子]
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发布于:2016-04-27 12:38

图片:latest.gif


今日横扫美国中部的壮观飑线系统
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