{"id":300680,"date":"2024-02-08T15:30:37","date_gmt":"2024-02-08T14:30:37","guid":{"rendered":"https:\/\/climatescience.press\/?p=300680"},"modified":"2024-02-08T15:30:40","modified_gmt":"2024-02-08T14:30:40","slug":"hurricane-category-6","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=300680","title":{"rendered":"Hurricane Category 6?"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

From Watts Up With That?<\/a><\/p>\n\n\n\n

Rud Istvan<\/p>\n\n\n\n

This simple guest post was prompted by an alarming WaPo report<\/a> \u2018today\u2019 of a new PNAS study seriously proposing an expansion of the Saffir-Simpson hurricane scale to a \u2018level 6\u2019<\/a>, (beyond the current peak of 5) because of intensified tropical cyclones caused by climate change.<\/p>\n\n\n\n

The PNAS<\/a> reasoning was that a few Pacific Hurricanes (aka tropical cyclones) have exceeded SF level 5. True, sort of. All 5 cited by PNAS only temporarily exceeded Cat 5. For example, quoting from the new paper, \u201cThe most intense of these hypothetical Cat 6 storms, Patricia, hit landfall in Jalisco, Mexico as a cat 4.\u201d OOPS.<\/p>\n\n\n\n

The PNAS paper reached its new and alarming future \u2018Cat 6\u2019 conclusion by applying \u2018bias corrections\u2019 to CMIP5. Although it then states, \u201cNone of these high resolution climate model projection should be taken too literally.\u201d Especially after PNAS \u2018bias corrections\u2019. But IPCC said CMIP5 was then the best and brightest.<\/p>\n\n\n\n

There are two basic skeptical problems with this newly alarming \u2018climate science\u2019\u2014albeit \u2018not to be taken too literally\u2019.                                                                                                <\/p>\n\n\n\n

First, almost all the recent \u2018worst satellite wind speed\u2019 Florida hurricane alarms were not ground truthed by observations near eye wall ground wind speeds\u2014by a lot.<\/p>\n\n\n\n

Ian was an exception to this, unfortunately as bad as predicted. So the satellite and hurricane hunter CatX estimates are generally high compared to ground truth. That is probably OK when NHC warnings a threatened Florida populace to evacuate\u2014but not for \u2018climate science\u2019 in PNAS.<\/p>\n\n\n\n

Second, Ryan Maui\u2019s ACE shows no such \u2018Cat 6\u2019 strengthening over time.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

So PNAS published an alarming model speculation based on \u201ccorrections to climate model biases\u2019, then failed to publish the observed facts.<\/p>\n\n\n\n

Feynman is surely rolling over in his true science grave.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

The\u00a0PNAS\u00a0reasoning was that a few Pacific Hurricanes (aka tropical cyclones) have exceeded SF level 5. True, sort of. All 5 cited by PNAS only temporarily exceeded Cat 5. For example, quoting from the new paper, \u201cThe most intense of these hypothetical Cat 6 storms, Patricia, hit landfall in Jalisco, Mexico as a cat 4.\u201d OOPS.<\/p>\n","protected":false},"author":121246920,"featured_media":300684,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"The\u00a0PNAS\u00a0reasoning was that a few Pacific Hurricanes (aka tropical cyclones) have exceeded SF level 5. True, sort of. All 5 cited by PNAS only temporarily exceeded Cat 5. For example, quoting from the new paper, \u201cThe most intense of these hypothetical Cat","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818056,691818103,691823529,691825233],"class_list":{"0":"post-300680","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-climate-change","9":"tag-hurricane","10":"tag-pnas","11":"tag-tropical-cyclones","13":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/02\/0hurricane-patricia.jpg?fit=1240%2C696&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1gdG","jetpack-related-posts":[{"id":404544,"url":"https:\/\/climatescience.press\/?p=404544","url_meta":{"origin":300680,"position":0},"title":"Hurricane Bloating Discovery \u2013 No Global Warming Needed","author":"uwe.roland.gross","date":"09\/24\/2025","format":false,"excerpt":"When people hear about hurricanes, they often focus on the category rating: Category 1 through 5, based on maximum wind speeds. But not all hurricanes with the same wind speeds are alike. Some are compact storms while others can span the size of entire states. Larger hurricanes bring far greater\u2026","rel":"","context":"In \"Category 1 through 5\"","block_context":{"text":"Category 1 through 5","link":"https:\/\/climatescience.press\/?tag=category-1-through-5"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/09\/AQNE9m-vHY2t7WraL5DSk1JXgkxMzZfhaVDHKgXNooIqw78rE_GwnRL6-D_E0OXHArIjfyv3vqH_zw14HBKobSWHY1ihcptMxn0PRXJ01bT0Xj0j8u5Ivlq_4RZwR_X-Mcp5AOR2fqdYuLYtvTDINwOkOZx4-1.jpeg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/09\/AQNE9m-vHY2t7WraL5DSk1JXgkxMzZfhaVDHKgXNooIqw78rE_GwnRL6-D_E0OXHArIjfyv3vqH_zw14HBKobSWHY1ihcptMxn0PRXJ01bT0Xj0j8u5Ivlq_4RZwR_X-Mcp5AOR2fqdYuLYtvTDINwOkOZx4-1.jpeg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/09\/AQNE9m-vHY2t7WraL5DSk1JXgkxMzZfhaVDHKgXNooIqw78rE_GwnRL6-D_E0OXHArIjfyv3vqH_zw14HBKobSWHY1ihcptMxn0PRXJ01bT0Xj0j8u5Ivlq_4RZwR_X-Mcp5AOR2fqdYuLYtvTDINwOkOZx4-1.jpeg?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/09\/AQNE9m-vHY2t7WraL5DSk1JXgkxMzZfhaVDHKgXNooIqw78rE_GwnRL6-D_E0OXHArIjfyv3vqH_zw14HBKobSWHY1ihcptMxn0PRXJ01bT0Xj0j8u5Ivlq_4RZwR_X-Mcp5AOR2fqdYuLYtvTDINwOkOZx4-1.jpeg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/09\/AQNE9m-vHY2t7WraL5DSk1JXgkxMzZfhaVDHKgXNooIqw78rE_GwnRL6-D_E0OXHArIjfyv3vqH_zw14HBKobSWHY1ihcptMxn0PRXJ01bT0Xj0j8u5Ivlq_4RZwR_X-Mcp5AOR2fqdYuLYtvTDINwOkOZx4-1.jpeg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":251352,"url":"https:\/\/climatescience.press\/?p=251352","url_meta":{"origin":300680,"position":1},"title":"Climate Expert: Misinformation In The IPCC – Hurricanes","author":"uwe.roland.gross","date":"04\/05\/2023","format":false,"excerpt":"The\u00a0IPCC AR6\u00a0failed spectacularly on tropical cyclones\u00a0in\u00a0concluding that both detection and attribution\u00a0have not only\u00a0been achieved\u00a0related to an increasing proportion of major hurricanes but that\u00a0such conclusions have strengthened since 2014.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/04\/02SQPBD2I6ZYPSAFC4RHYMVGKJU.jpg?fit=1200%2C856&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/04\/02SQPBD2I6ZYPSAFC4RHYMVGKJU.jpg?fit=1200%2C856&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/04\/02SQPBD2I6ZYPSAFC4RHYMVGKJU.jpg?fit=1200%2C856&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/04\/02SQPBD2I6ZYPSAFC4RHYMVGKJU.jpg?fit=1200%2C856&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/04\/02SQPBD2I6ZYPSAFC4RHYMVGKJU.jpg?fit=1200%2C856&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":209413,"url":"https:\/\/climatescience.press\/?p=209413","url_meta":{"origin":300680,"position":2},"title":"Mainstream Media Isn\u2019t Telling the Truth About Hurricanes, New Study Shows","author":"uwe.roland.gross","date":"07\/20\/2022","format":false,"excerpt":"Despite the claims of climate activists and the mainstream media that climate change is causing\u00a0more tropical cyclones and major hurricanes to form\u00a0and making\u00a0hurricane seasons worse, a recent study indicates these claims are false. In fact, the study shows tropical cyclones have declined 13 percent over the past century. 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