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|Numerous intense (EF3+) tornadoes likely, with widespread "very large hail" possibly reaching up to {{convert|4|in|cm}} in diameter, and isolated wind gusts up to {{convert|75|mph|km/h}}.<ref>{{cite web |last1=Smith |first1=Bryan |title=Particularly Dangerous Situation (PDS) Tornado Watch 189 |url=https://www.spc.noaa.gov/products/watch/2024/ww0189.html |website=[[Storm Prediction Center]] |publisher=[[National Oceanic and Atmospheric Administration]] |access-date=20 May 2024 |location=[[National Weather Center]] |date=6 May 2024}}</ref> |
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Revision as of 18:26, 21 May 2024
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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
 | This list is incomplete; you can help by adding missing items. |
Tornado watches
| Year | Date | Event link | States | F/EF# | Max non-tornadic wind gust | Max hail size | Watch for ... |
|---|---|---|---|---|---|---|---|
| 2021 | May 26 | ||||||
| 2022 | May 30 | Tornadoes of 2022#May 30 (United States and Canada) | Minnesota, South Dakota | EF3 | Insert reason of issuance here | ||
| 2022 | November 29 | Tornado outbreak of November 29-30, 2022 | Arkansas, Louisiana, Mississippi | EF3 | 3 inches (7.6 cm) | Insert reason of issuance here. | |
| 2022 | November 29 | Tornado outbreak of November 29-30, 2022 | Arkansas, Louisiana, Mississippi | EF3 | 3 inches (7.6 cm) | Insert reason of issuance here. | |
| 2022 | December 14 | Tornado outbreak of December 12–15, 2022 | Alabama, Louisiana, Mississippi | EF3 | A few intense (EF3+) tornadoes expected. Possibility of hailstones up to 1.5 inches in diameter and wind gusts up to 70 mph. | ||
| 2023 | March 31 | Tornado outbreak of March 31 – April 1, 2023 | Iowa, Illinois, Missouri, Wisconsin | EF4 | 100 miles per hour (160 km/h) | 3.5 inches (8.9 cm) | Several tornadoes and a few intense tornadoes likely. Widespread damaging winds up to 70 mph possible. Scattered large hail and isolated very large hail events to 3 inches in diameter possible |
| 2023 | March 31 | Tornado outbreak of March 31 – April 1, 2023 | Arkansas, Illinois, Kentucky, Missouri, Mississippi, Tennessee, Texas | EF4 | 100 miles per hour (160 km/h) | 3.5 inches (8.9 cm) | Several tornadoes and a few intense tornadoes likely. Scattered damaging winds up to 70 mph possible. Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible |
| 2023 | March 31 | Tornado outbreak of March 31 – April 1, 2023 | Alabama, Mississippi, Tennessee | EF4 | 100 miles per hour (160 km/h) | 3.5 inches (8.9 cm) | Several tornadoes and a few intense tornadoes likely. Scattered damaging winds and isolated significant gusts to 80 mph likely. Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible |
| 2024 | April 27 | Tornado outbreak of April 26–28, 2024 | Oklahoma, Texas | EF4 | 80 miles per hour (130 km/h) | 3 inches (7.6 cm) | A few intense (EF3+) tornadoes likely, with widespread "very large hail" possibly reaching up to 3 inches (7.6 cm) in diameter, and isolated wind gusts up to 75 miles per hour (121 km/h).[6] |
| 2024 | May 6 | Tornado outbreak of May 6–10, 2024 | Kansas, Oklahoma, Texas | EF4 | 100 miles per hour (160 km/h) | 6.25 inches (15.9 cm) | Numerous intense (EF3+) tornadoes likely, with widespread "very large hail" possibly reaching up to 4 inches (10 cm) in diameter, and isolated wind gusts up to 75 miles per hour (121 km/h).[7] |
| 2024 | May 21 | N/A | TBD | TBD | TBD |
Severe thunderstorm watches
| Year | Date | Event link | States | F/EF# | Max non-tornadic wind gust | Max hail size | Watch for ... |
|---|---|---|---|---|---|---|---|
| 2021 | July 28 | Insert reason here… | |||||
| 2022 | May 12 | May 2022 Midwest derecho | Iowa, Minnesota, Nebraska, South Dakota | EF2 | 107 miles per hour (172 km/h) | Insert reason here… | |
| 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) | Widespread wind gusts up to 90 miles per hour (140 km/h) expected, scattered very large hail up to 3 inches (7.6 cm) in diameter, and the possibility of a few tornadoes. [8] |
| 2024 | May 19 | Tornadoes of 2024#May 19 (United States) | Kansas | TBD | Widespread wind gusts up to 90 miles per hour (140 km/h) expected, very large hail up to 4 inches (10 cm) in diameter, and the possibility of a few tornadoes.[9][10] |
Flash flood watches
| Year | Date | Event link | States | Watch for ... |
|---|---|---|---|---|
| 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."[11] |
See also
- List of SPC High Risk days
- List of Storm Prediction Center meso—gamma mesoscale discussions
- List of United States tornado emergencies
References
- ^ 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.
- ^ "IEM :: Particularly Dangerous Situation SPC Watches Listing".
- ^ "Storm Prediction Center PDS Tornado Watch 93".
- ^ "Storm Prediction Center PDS Tornado Watch 94".
- ^ "Storm Prediction Center PDS Tornado Watch 97".
- ^ "Storm Prediction Center PDS Tornado Watch 146".
- ^ Smith, Bryan (6 May 2024). "Particularly Dangerous Situation (PDS) Tornado Watch 189". Storm Prediction Center. National Weather Center: National Oceanic and Atmospheric Administration. Retrieved 20 May 2024.
- ^ "Storm Prediction Center PDS Severe Thunderstorm Watch 293".
- ^ 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) - ^ 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.
- ^ 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.