Here is a concise summary of the weather update:
**Current Situation:**
* The "Death Ridge" (a high-pressure system) that blocked severe weather in the Eastern US is breaking down.
* An omega block pattern that protected the East Coast is dissipating.
**Upcoming Weather:**
* **Saturday:** Severe weather outbreak expected in the Southern Plains (OK to LA), with large hail, damaging winds, and possible tornadoes.
* **Sunday:** Thunderstorms to develop in the Mid-Mississippi and Ohio River valleys, capable of producing hail, damaging winds, and isolated tornadoes.
* **Monday:** Severe thunderstorms with isolated tornadoes possible in the Southern Mid-Atlantic region.
* **Late Next Week (around June 15th):** Potential for a significant severe weather outbreak with multiple tornadoes, as a powerful trough develops.
**Long-term Context:**
* The US has entered an El Niño phase, which is contributing to the unusual weather patterns.
* The Gulf of Mexico is unusually warm, increasing the potential for explosive tropical development later this month.
**Action Items:**
* Be prepared for severe weather returns to populated areas.
* Review emergency plans with your family.
* Consider using a reliable radar app, such as RadarOmega.
Here are the key facts extracted from the text, each with a number and in short sentence form, excluding opinions:
**Weather Patterns and Events**
1. A high-pressure ridge, nicknamed the "Death Ridge", formed in the US center last month, creating an omega block pattern.
2. The Death Ridge and omega block are now falling apart.
3. A new, rare weather pattern is emerging, expected to cause unexpected problems in the US by mid-June.
**Severe Weather Alerts**
4. The Storm Prediction Center issued an Enhanced Risk of severe weather for over 8 million people, effective Saturday.
5. The affected area includes the southern plains, with risks of large hail, damaging winds, and possibly tornadoes.
6. This marks the easternmost elevated risk of severe weather in nearly a month.
**May Weather Statistics**
7. May was the fourth consecutive May without a violent tornado in the US.
8. This breaks the previous record of three consecutive Mays (2000-2002) without violent tornadoes.
9. New York and Pennsylvania had no reported wind, hail, or tornadoes in May.
**Upcoming Weather Events**
10. Severe weather is expected from Oklahoma City to Shreveport on Saturday.
11. Thunderstorms, possibly with hail and damaging winds, are forecast for the mid-Mississippi and Ohio River valleys on Sunday.
12. A potential for tornadoes exists in these areas, particularly around sunset on Sunday.
13. Monday may see severe thunderstorms with isolated tornadoes in South Carolina and the southern Mid-Atlantic region.
14. A powerful trough will form in the west on Monday, aiming for the Central Plains, potentially leading to several days of significant severe weather.
**El Nino and Jet Stream**
15. The US is currently in an El Nino phase, affecting the jet stream's position.
16. The subtropical jet, amplified during El Nino phases, is influencing US weather.
17. The jet stream's usual position is farther north at this time of year.
**Future Weather Concerns**
18. A significant severe weather outbreak is possible late next week (around Thursday, June 15th), involving a trough and moisture from the Gulf of Mexico.
19. The Gulf of Mexico's water temperature is unusually warm for this time of year, potentially leading to intensified tropical activity.
20. A consistent signal suggests a tropical system might enter the Gulf later in June.