The Dominican Republic's Emergency Operations Center (COE) has placed seven provinces on yellow alert as a weather system brings heavy rain, thunderstorms and strong wind gusts to much of the country. Another 17 provinces, including Greater Santo Domingo and the National District, are on green alert — the lowest level of the three-tier system.

The provinces on yellow alert are Puerto Plata, Pedernales, Independencia, Bahoruco, Barahona, Espaillat and Santiago. On green alert are Santo Domingo, the National District, San Cristóbal, Monseñor Nouel, La Vega, San Pedro de Macorís, Dajabón, San José de Ocoa, Valverde, La Romana, Azua, Peravia, La Altagracia, Santiago Rodríguez, Elías Piña, Hermanas Mirabal and Monte Cristi — a list that touches most of the country's best-known tourist areas, from Punta Cana (La Altagracia) to Puerto Plata on the north coast.

According to the Dominican Institute of Meteorology (INDOMET), an upper-level trough combined with a very humid air mass is driving dense cloud formation and locally intense downpours. Thunderstorms, even hail, and strong gusts are possible, with a risk of fallen branches and damage to weaker structures. The worst conditions are expected to start in the southwest, the border region with Haiti, the Caribbean coastal zone and the eastern plains, before moving across other parts of the country.

The COE's advice is simple and worth following if you're on the ground: don't attempt to cross rivers, streams or ravines when water levels are high, and stay out of the sea and swimming areas in provinces under alert. Flash flooding is the main killer in tropical downpours, and rip currents spike during storms even when the beach looks swimmable between showers.

If you have a trip booked, there's no need to panic. Yellow and green alerts are precautionary — flights and resorts typically operate normally — but expect some washed-out beach afternoons and potentially bumpy excursions. Keep an eye on COE and INDOMET updates, follow your hotel's guidance on water activities, and build some flexibility into any outdoor plans like hikes, waterfall trips or boat outings. Inland destinations such as Jarabacoa and Constanza (La Vega, Monseñor Nouel) sit in terrain where swollen rivers can close roads, so check conditions before driving.

For anyone already travelling in the Dominican Republic this week, the practical takeaway is to treat weather warnings seriously, avoid river crossings and coastal swimming during the alert period, and keep devices charged in case of localised power cuts. The system should pass; the beaches, waterfalls and mountains will still be there afterwards.