
ALT Line graph showing observed and predicted temperatures in the key ENSO-monitoring region of the tropical Pacific from spring 2025 through the fall. By late summer, the shading spans from El Niño to La Niña, showing the range of potential ENSO states. However, the majority of model forecasts are concentrated in the neutral range, meaning the highest chance is that the temperature in the Niño-3.4 region of the tropical Pacific will be near average.

ALT A yellow flyer with the NIHHIS logo. The flyer says, “2025 Heat Safety Week. Use #HeatSafety to follow along! Monday, 5/19: Heat-related illness awareness. Tuesday, 5/20: Check on your family, friends, teammates, colleagues, & neighbors. Wednesday, 5/21: Heatstroke prevention tips. Thursday, 5/22: Heat safety and outdoor recreation. Friday, 5/23: Staying safe in the sun (Don’t Fry Day)”


























