{"id":8536,"date":"2015-06-06T10:35:37","date_gmt":"2015-06-06T05:05:37","guid":{"rendered":"http:\/\/www.gujaratweather.com\/wordpress\/?page_id=8536"},"modified":"2015-06-09T23:05:28","modified_gmt":"2015-06-09T17:35:28","slug":"el-nino-classified-as-weak-till-date-update-6th-june-2015","status":"publish","type":"page","link":"https:\/\/www.gujaratweather.com\/?page_id=8536","title":{"rendered":"El Nino Classified As Weak Till Date – Update 6th June 2015"},"content":{"rendered":"

El Nino Status on 6th June 2015<\/h3>\n

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Full fledged EL Nino was confirmed at the end of March 2015 when the five consecutive 3 monthly seasons had ONI index of +0.5 C or higher.<\/h3>\n

The Table below shows the monthly SST of Nino3.4 Region and the Climate adjusted normal SST and SST anomaly for last one year.<\/h3>\n

<\/h3>\n

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2014   6   27.81   27.69    0.12\r\n2014   7   27.30   27.28    0.02\r\n2014   8   26.83   26.92   -0.09\r\n2014   9   27.01   26.83    0.18\r\n2014  10   27.25   26.79    0.46\r\n2014  11   27.57   26.74    0.83\r\n2014  12   27.36   26.69    0.67\r\n2015   1   27.21   26.68    0.53\r\n2015   2   27.31   26.84    0.47\r\n2015   3   27.84   27.34    0.51\r\n2015   4   28.62   27.81    0.81\r\n2015   5   28.82   27.91    0.91<\/pre>\n
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March, April & May 2015 SST anomaly for Nino3.4 region is used to calculate the ONI Index for MAM as\u00a0+0.7\u00baC.<\/h3>\n
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As per NOAA Officially El Nino is declared as per conditions laid down and shown in ONI Index graph below:<\/h3>\n
El Ni\u00f1o: characterized by a positive ONI greater than or equal to +0.5\u00baC. La Ni\u00f1a: characterized by a negative ONI less than or equal to -0.5\u00baC. By historical standards, to be classified as a full-fledged El Ni\u00f1o or La Ni\u00f1a episode, these thresholds must be exceeded for a period of at least 5 consecutive overlapping 3-month seasons.<\/h3>\n
 <\/p>\n
<\/h3>\n
\"ONI_MAM_2015\"<\/a><\/p>\n
Total of seven consecutive 3 monthly seasons have had ONI Index +0.5\u00baC or higher.\u00a0The respective seven ONI Index are SON 2014= +0.5\u00baC\u00a0and OND 2014 = +0.7\u00baC, NDJ 2015=+0.7\u00baC, \u00a0DJF 2015=+0.6\u00baC, JFM 2015=+0.5\u00baC, \u00a0FMA 2015=+0.6\u00baC & MAM 2015=+0.7\u00baC.<\/h3>\n
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This El Nino is currently classified as a Weak El Nino since the ONI Index is yet below +1.0\u00baC.<\/h3>\n
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CPC had issued an El Nino Advisory on 5th March 2015 in anticipation that\u00a0JFM 2015 ONI would be\u00a00.5\u00baC or more.<\/h3>\n
CPC considers El Ni\u00f1o or La Ni\u00f1a conditions to occur when the monthly Ni\u00f1o3.4 OISST departures meet or exceed +\/- 0.5\u00b0C along with consistent atmospheric features. These anomalies must also be forecasted to persist for 3 consecutive months.<\/h3>\n
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Southern Oscillation Index<\/h3>\n
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\n
As per BOM, Australia: The Southern Oscillation Index (SOI) has dropped further over the past two weeks, remaining firmly within El\u00a0Ni\u00f1o values. The latest 30-day SOI value to 24\u00a0May is \u221217.4. The 30-day SOI has remained below El\u00a0Ni\u00f1o thresholds for more than two weeks. The 90-day SOI has also dropped below \u221210; indicative of a persistent three-month period of higher atomspheric pressure in the western Pacific.<\/h3>\n
Sustained positive values of the SOI above +7 may indicate La\u00a0Ni\u00f1a, while sustained negative values below \u22127 may indicate El\u00a0Ni\u00f1o. Values of between about +7 and \u22127 generally indicate neutral conditions.<\/h3>\n
The latest 30-day SOI value as of 5th June has gone up to \u221213.3. <\/span><\/h3>\n<\/div>\n
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<\/h3>\n
SOI Monthly graph till end of May 2015 – The Long Paddock – Queensland Government. The Latest 5th June 2015 30 days SOI was -12.45 .<\/h3>\n
\"SOI_May_2015\"<\/a><\/p>\n
This is the only El Nino to have been declared as full fledged El nino at the end of March of any year from 1950 on wards.<\/h3>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
El Nino Status on 6th June 2015   Full fledged EL Nino was confirmed at the end of March 2015 when the five consecutive 3 monthly seasons had ONI index of +0.5 C or higher. The Table below shows the Read More …<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-8536","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/pages\/8536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8536"}],"version-history":[{"count":0,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/pages\/8536\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}