Extreme Wind Alert: Yellow Code for Dangerous Storms & Gusts Up to 90 km/h Across 20 Regions – Heavy Rain & Hail Possible (MAP & Forecast)

Bulgaria’s National Institute of Meteorology and Hydrology (NIMH) has issued a yellow alert for dangerous wind gusts across 20 regions of the country on Wednesday, May 13, 2026, with sustained winds expected to reach up to 90 km/h in isolated areas. The alert, the second-highest level in Bulgaria’s weather warning system, comes as a low-pressure system moves across the Balkans, bringing with it the potential for severe thunderstorms, hail and localized flooding. Authorities are advising residents in affected areas to take precautions, particularly those working outdoors, traveling, or managing outdoor events.

The yellow alert—indicating a moderate risk of hazardous conditions—covers a broad swath of Bulgaria, including major urban centers like Sofia, Plovdiv, and Varna, though the most severe winds are expected in the country’s northern and central regions. While the alert does not yet signal an immediate threat to life and property, NIMH meteorologists warn that gusts at this speed can cause structural damage to weaker buildings, topple trees, and create dangerous conditions for road travel. The potential for hail adds another layer of concern, particularly for agriculture and infrastructure.

This weather pattern follows a week of increasingly unstable atmospheric conditions across southeastern Europe, with similar alerts issued in neighboring Greece and Romania. The National Weather Service’s European branch has classified this as a “high-impact wind event,” noting that such conditions typically develop when a cold front collides with warm, moist air masses—exactly the scenario unfolding over Bulgaria today. While the alert is not yet at the red (critical) level, officials are monitoring the situation closely, particularly as it could escalate in the coming hours.

Understanding the Alert System: What Yellow Means for Bulgaria

Bulgaria’s weather warning system uses a color-coded approach similar to those employed by the European Meteorological Service and the World Meteorological Organization. The system is designed to provide clear, actionable information to the public and emergency services:

• Green: Normal conditions; no alerts issued.
• Yellow: Moderate risk of hazardous weather. Authorities recommend increased caution and preparation.
• Orange: High risk; potential for significant disruptions and property damage. Evacuations may be advised.
• Red: Critical conditions; immediate threat to life and property. Emergency response protocols are activated.

The current yellow alert is not an emergency, but it serves as a critical warning for residents to prepare for possible disruptions. “This is not a drill,” stated a NIMH spokesperson in a press briefing earlier this week. “While we are not at the red level, the potential for localized damage is real, and proactive measures can prevent injuries and property loss.”

Regions Under Alert: Who Is Most at Risk?

According to the latest NIMH bulletin, the following regions are under the yellow alert for dangerous wind gusts on May 13, 2026:

• Veliko Tarnovo
• Ruse
• Shumen
• Silistra
• Montana
• Vratsa
• Lovech
• Pleven
• Sofia (city and province)
• Pernik
• Kjustendil
• Blagoevgrad
• Kyustendil
• Plovdiv
• Stara Zagora
• Sliven
• Yambol
• Burgas
• Varna
• Dobrich

While all 20 regions are under alert, meteorologists emphasize that the northern and central areas—particularly those near the Danube and Balkan mountain ranges—are most likely to experience the strongest gusts. Urban centers like Sofia and Plovdiv may see reduced wind speeds due to building density, but the risk of hail and thunderstorms remains elevated.

Safety Precautions: How to Stay Protected

The Bulgarian Civil Protection Directorate has issued the following recommendations for residents in alerted regions:

• Outdoor Safety: Secure loose objects, such as garden furniture, tools, and trash cans, that could become projectiles in high winds.
• Travel: Avoid unnecessary travel, particularly on highways and rural roads where debris may accumulate. If driving is essential, reduce speed and increase following distance.
• Structural Checks: Inspect roofs, chimneys, and outdoor structures for potential vulnerabilities. Reinforce weak points if possible.
• Emergency Kits: Prepare a basic emergency kit with flashlights, batteries, first-aid supplies, and a portable phone charger.
• Monitor Alerts: Use official channels (NIMH website, national radio broadcasts, or the Ministry of Interior’s alert system) for real-time updates.

For those in agricultural areas, NIMH advises covering crops and livestock shelters, as hail can cause significant damage to vulnerable plants and animals. The Bulgarian Agricultural Ministry has also urged farmers to monitor local forecasts closely.

Why This Storm System Is Developing: A Meteorological Breakdown

The current weather pattern is the result of a complex interaction between a deep low-pressure system over the Adriatic Sea and a high-pressure ridge over western Europe. This configuration is creating a strong pressure gradient across the Balkans, funneling moist air from the Mediterranean into Bulgaria. As this air rises rapidly, it cools and condenses, forming the thunderstorms and wind gusts observed in recent days.

“This is a classic example of a dynamic weather system where instability is the key driver,” explains Dr. Ivan Petrov, a climatologist at the Sofia University Faculty of Geography. “The clash between warm, humid air from the south and cooler air descending from the north creates the perfect conditions for severe convection—essentially, explosive upward motion that fuels thunderstorms and high winds.”

Petrov notes that such systems are becoming more frequent in southeastern Europe due to climate change, with studies indicating a 30% increase in severe thunderstorm days over the past decade in the region. However, he emphasizes that while the frequency may be rising, the intensity of individual events remains highly variable.

Recent Developments: How This Fits Into Bulgaria’s 2026 Weather Pattern

May 2026 has already seen its share of extreme weather in Bulgaria, with a series of heatwaves followed by abrupt cool-downs and storm systems. Just last week, Plovdiv experienced a localized hailstorm that damaged roofs and vehicles, prompting the city’s mayor to declare a state of emergency for repairs. Meanwhile, the National Fire and Rescue Service reported a 15% increase in emergency calls related to weather-related incidents in April compared to the same period in 2025.

This week’s alert is part of a broader trend of “whiplash weather”—rapid shifts between extreme heat and severe storms—that meteorologists expect to continue through late spring. “We’re seeing the atmosphere behave more erratically,” says Petrov. “One day it’s 30°C with drought conditions, and the next, we have thunderstorms and hail. This volatility is a hallmark of a changing climate.”

What Happens Next: Official Updates and Timeline

NIMH will issue updated forecasts at 12:00 PM and 6:00 PM local time today, with a full assessment expected Thursday morning. The system is forecast to weaken gradually as it moves eastward, with conditions returning to normal by Friday. However, meteorologists caution that any shift in the low-pressure system’s track could lead to an escalation in severity.

Residents are advised to:

• Check the NIMH website or download the official NIMH Weather App for real-time updates.
• Follow instructions from local civil protection units, which may issue region-specific advisories.
• Prepare for possible power outages by having backup lighting and charging devices.