Wikipedia

Draft:List of particularly dangerous situation watches

This is a list of "particularly dangerous situation" (PDS) watches issued by the National Weather Service.[1][2] Particularly dangerous situation watches are issued to convey special urgency in some watch or warning messages for unusually extreme and life-threatening severe weather events, above and beyond the average severity for the type of event. There are three types of PDS watches which have been issued by the National Weather Service: PDS tornado watches (PDS TOA), PDS severe thunderstorm watches (PDS SVA), and PDS flash flood watches (PDS FFA).

List

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Tornado watches

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Year Date Event link States F/EF# Max non-tornadic wind gust Max hail size Image Refs
2018 March 19
April 13
2019 May 20 Tornado outbreak sequence of May 2019
May 22
2020 March 28 Tornado outbreak of March 28-29, 2020
April 12 2020 Easter tornado outbreak
2021 March 17 Tornado outbreak of March 16–18, 2021 Alabama, Mississippi EF2 85 mph (137 km/h) 2.75 inches (7.0 cm)
EF2 85 miles per hour (137 km/h) 2.75 inches (7.0 cm)
EF2 85 miles per hour (137 km/h) 2.75 inches (7.0 cm)
March 25 Tornado outbreak sequence of March 24–28, 2021 Alabama, Georgia, Mississippi, Tennessee EF4 105 miles per hour (169 km/h) 3 inches (7.6 cm)
May 26 Tornadoes of 2021#May 26–28 (United States) Colorado, Kansas, Nebraska EF2
2022 May 30 Tornadoes of 2022#May 30 (United States and Canada) Minnesota, South Dakota EF3 [3]
November 29 Tornado outbreak of November 29-30, 2022 Arkansas, Louisiana, Mississippi EF3 3 inches (7.6 cm) [4]
Arkansas, Louisiana, Mississippi EF3 3 inches (7.6 cm) [5]
December 14 Tornado outbreak of December 12–15, 2022 Alabama, Louisiana, Mississippi EF3 [6]
2023 March 31 Tornado outbreak of March 31 – April 1, 2023 Iowa, Illinois, Missouri, Wisconsin EF4 81 miles per hour (130 km/h) 3.5 inches (8.9 cm) [7]
Arkansas, Illinois, Kentucky, Missouri, Mississippi, Tennessee, Texas EF3 73 miles per hour (117 km/h) 2.00 inches (5.1 cm) [8]
Alabama, Mississippi, Tennessee EF3 60 miles per hour (97 km/h) 1.50 inches (3.8 cm) [9]
2024 April 27 Tornado outbreak of April 26–28, 2024 Oklahoma, Texas EF4 60 miles per hour (97 km/h) 2.75 inches (7.0 cm) [10]
May 6 Tornado outbreak of May 6–10, 2024 Kansas, Oklahoma, Texas EF4 89 miles per hour (143 km/h) 2.75 inches (7.0 cm) [11]
May 21 Tornado outbreak sequence of May 19–27, 2024 Iowa, Illinois, Minnesota, Wisconsin EF4 100 miles per hour (160 km/h) 2.00 inches (5.1 cm)   [12]
May 25 Kansas, Oklahoma, Texas EF3  
May 26 Arkansas, Illinois, Kentucky, Missouri, Tennessee EF3  

Severe thunderstorm watches

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Year Date Event link States F/EF# Max non-tornadic wind gust Max hail size Image Refs
2019 June 15
July 19
August 11
2020 July 17 No link
August 10 August 2020 Midwest derecho EF1
2021 July 28 Tornado outbreak of July 28–29, 2021 Minnesota, Wisconsin EF3
2022 May 12 May 2022 Midwest derecho Iowa, Minnesota, Nebraska, South Dakota EF2 107 miles per hour (172 km/h)
2023 June 14. Tornado outbreak sequence of June 14–19, 2023 Arkansas, Louisiana, Mississippi EF3 100 miles per hour (160 km/h) 4.75 inches (12.1 cm) [13]
2024 May 19 Tornado outbreak sequence of May 19–23, 2024 Kansas, Oklahoma, Texas TBD [14][15]

Flash flood watches

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Year Date Event link States Max observed rainfall Watch for ... Refs
2011 April 24 2011 Mississippi River floods Arkansas, Mississippi, Tennessee Rainfall in excess of 12 inches (30 cm) in Clay, Greene, Lawrence and Randolph counties in Arkansas, Dunklin and Pemiscot counties in Missouri and Lake and Obion counties in Tennessee. When issuing the PDS flash flood watch, the National Weather Service stated, "This event may be as severe as the May 1-2 2010 flooding in many places." [16]

See also

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References

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  1. ^ Belles, James E.; Borghoff, William R.; Howell, Jonathan L. (23 June 2011). "Using 'Particularly Dangerous Situation" Wording to Improve Public Response to National Weather Service Watches and Warnings" (PDF). The Conference on Weather Warnings and Communication. P1.8. Memphis, Tennessee and Tulsa, Oklahoma: National Weather Service via the American Meteorological Society: 1–4. Retrieved 20 May 2024.
  2. ^ "IEM :: Particularly Dangerous Situation SPC Watches Listing".
  3. ^ "Storm Prediction Center PDS Tornado Watch 293".
  4. ^ "Storm Prediction Center PDS Tornado Watch 572".
  5. ^ "Storm Prediction Center PDS Tornado Watch 575".
  6. ^ "Storm Prediction Center PDS Tornado Watch 588".
  7. ^ "Storm Prediction Center PDS Tornado Watch 93".
  8. ^ "Storm Prediction Center PDS Tornado Watch 94".
  9. ^ "Storm Prediction Center PDS Tornado Watch 97".
  10. ^ "Storm Prediction Center PDS Tornado Watch 146".
  11. ^ "Storm Prediction Center PDS Tornado Watch 189".
  12. ^ "Storm Prediction Center PDS Tornado Watch 277".
  13. ^ "Storm Prediction Center PDS Severe Thunderstorm Watch 293".
  14. ^ Wikisource contributors (19 May 2024). "Severe Thunderstorm Watch Number 260 (2024)". Wikisource (Historical text). San Francisco, California: Wikimedia Foundation. Archived from the original on 21 May 2024. Retrieved 21 May 2024. {{cite web}}: |author1= has generic name (help)
  15. ^ Hart, John (19 May 2024). "Particularly Dangerous Situation (PDS) Severe Thunderstorm Watch 260". Storm Prediction Center. National Weather Center: National Oceanic and Atmospheric Administration. Archived from the original on 19 May 2024.
  16. ^ National Weather Service (24 April 2011). "...VERY HEAVY RAINFALL THROUGH THE MIDDLE OF THIS WEEK WILL LIKELY LEAD TO SIGNIFICANT...WIDESPREAD FLASH FLOODING..." Iowa Environmental Mesonet (Emergency population warning / Press release). Memphis, Tennessee: National Oceanic and Atmospheric Administration. Archived from the original on 20 May 2024. Retrieved 20 May 2024.
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