Credits: YellowstoneNPS — public domain.
This Wednesday, November 19, Météo-France places 44 departments under yellow snow-ice alert, sometimes wind and storm-surge. Snow-ice showers are moving from Normandy toward Hauts-de-France then Île-de-France and the east, with gusts up to 80–90 km/h on the English Channel and a rain-snow threshold around 600 m. Why now, which areas, until when, and how to travel safely? Our guide answers.
Weather – Snow-Ice Alert: The Essentials
Météo-France places 44 departments under yellow snow-ice alert this Wednesday 11/19/2025 (sometimes also wind, rain-flooding or storm-surge). In its 10 a.m. bulletin, the agency already shows 46 departments on yellow alert for Thursday 11/20/2025. The shift to winter intensifies and becomes cold-weather alert: frequent frosts (often −2 to 0 °C, locally −3 to −4 °C in the east) and limited highs (4 to 8 °C from the northeast quarter to the mountain ranges) versus 13 to 19 °C in Corsica. Snow showers arrive in Normandy and reach the Hauts-de-France. Then they move toward Île-de-France. Finally, they progress toward the east during the evening and night. In the mountains (Vosges, Jura, Massif Central, Northern Alps, Pyrenees), the rain-snow limit drops to 600 m (Vosges/Jura/Massif Central/Northern Alps) and to 1,000 m in the Pyrenees by the end of the day.
Departments on Snow-Ice Alert Today
The yellow snow-ice alert covers the large northern half and the center-east. The departments listed by Météo-France for at least one phenomenon are: Ain, Aisne, Ardennes, Aube, Aveyron, Calvados, Cantal, Corrèze, Côte-d’Or, Côtes-d’Armor, Creuse, Doubs, Ille-et-Vilaine, Jura, Loire, Manche, Marne, Haute-Marne, Meurthe-et-Moselle, Meuse, Moselle, Nièvre, Nord, Oise, Orne, Pas-de-Calais, Puy-de-Dôme, Bas-Rhin, Haut-Rhin, Haute-Saône, Saône-et-Loire, Paris, Seine-Maritime, Seine-et-Marne, Yvelines, Somme, Vosges, Yonne, Territoire de Belfort, Essonne, Hauts-de-Seine, Seine-Saint-Denis, Val-de-Marne, Val-d’Oise. On the English Channel coast, a northwest flow brings gusts sometimes 80–90 km/h and, for Pas-de-Calais, a storm-surge risk associated with wind and tide.
Local notes: in Côte-d’Or, the snow-ice alert runs from 10 p.m. to 10 a.m. (Wednesday night to Thursday), mainly on the heights (Châtillonnais, Morvan). In the Marne, it runs from 11 p.m. to 10 a.m. with mixed rain and snow and light accumulations possible around Étoges, Suippes, Sainte-Ménehould or Vanault-les-Dames. Impacts vary by altitude and exposure: caution on plateaus and roads sheltered from the sun.
Timeline: From Wednesday Evening To Saturday
Wednesday 11/19
- 6 a.m.: first national extension to yellow snow-ice alert across a core of 25 departments (northeast quarter, part of the Massif Central and Île-de-France).
- 10 a.m.: rises to 44 departments for the day. The showers organize behind a front, advected by a northwest flow.
- Late afternoon/evening: snow showers more frequent over Normandy and Hauts-de-France, then spilling into Île-de-France, Champagne-Ardenne and the Grand Est. In plains, surface cover remains heterogeneous; the risk of black ice increases as road surfaces cool.
Thursday 11/20
- 46 departments expected under yellow snow-ice alert (mostly snow-ice). Snow or sleet over Centre, Burgundy, Franche-Comté, northern Rhône-Alpes; mixed rain/snow possible in Île-de-France.
Friday 11/21 and Saturday 11/22
- Coldest period of the sequence: values 4 to 6 °C below normal. Highs around 3–6 °C in Paris, Nancy, Toulouse.
Methodological note: the vigilance map is updated at least twice a day (generally 6 a.m. and 4 p.m.). Colors and the list of departments change according to the latest observations and models.
Why This Winter Episode Now?
A northward drop of polar air brings cold, dry air aloft. Meanwhile, milder, moist disturbances slide across the country. This creates a conflict of air masses, favorable to convective showers (snow showers). It also promotes graupel, ice pellets, and black ice if road surfaces cool below 0 °C. After an abnormally mild week for November, the transition to a winter regime is abrupt: the thermal gradient favors localized snow squalls and isothermal effects near persistent precipitation.
What This Means For Travel
Yellow snow-ice alert = be attentive: phenomena are common but locally dangerous. Main risks include icy roads and reduced visibility under showers. Also, gusts can cause falling branches. This may lead to temporary power outages. Finally, delays are possible on school transport or regional rail services.
Winter Travel Tips (Aligned With Safety Recommendations)
- Adjust your speed and increase following distances, especially at dawn and early evening.
- Anticipate travel time; postpone nonessential trips if conditions worsen along your route.
- Equip the vehicle: good tires, wipers, antifreeze washer fluid, flashlight, scraper, blanket.
- Watch for hazard areas: bridges, wooded sections, wet roads and shaded stretches, prone to black ice.
- Prefer, when possible, remote work or public transit to limit exposure to brief but treacherous events.
Weather alert France: consult the official Météo-France vigilance map and Bison Futé traffic maps.
Which Departments, What Intensities?
- North / northeast: mixed rain and snow or graupel, snow episodes sometimes down to lowlands, black ice possible on cold pavement.
- English Channel coast: frequent showers driven by a northwest flow; gusts up to 80–90 km/h. Winter storm alert: gusts up to 80–90 km/h on the Channel.
- Mountains: more persistent snowfall; 5 to 20 cm depending on altitude and range, more on the Alps.
- Burgundy-Franche-Comté / Grand Est: mixed rain-snow and snow on plateaus and rounded peaks; Côte-d’Or and Marne: nocturnal alert focused on 10 p.m.–10 a.m. and 11 p.m.–10 a.m..
Weather Keywords: A Small Useful Glossary
- Yellow alert: baseline alert level. Phenomena to watch for; stay aware of Météo-France updates.
- Shower: brief and unstable burst, sometimes mixed with graupel or snow. It can make roads slippery within minutes.
- Black ice: ice formed by supercooled rain or by cooling of water on a surface below 0 °C. Very low traction.
- Rain-snow limit (RSL): altitude above which snow replaces rain. It lowers as cold air pushes in.
Uncertainty For Thursday: 37 Or 46 Departments?
Some outlets mention 37 departments on snow-ice alert for Thursday, while the national bulletin lists 46 (all phenomena combined). The difference comes from the scope considered (snow-ice alone vs. all phenomena) and intra-day updates. Reference: the national map from Météo-France.
At A Glance: Useful Tools And Official Sources
- Météo-France vigilance map: updated at least twice daily (6 a.m., 4 p.m.), with details by phenomenon and department: vigilance.meteofrance.fr.
- Understanding Vigilance (official guidance): meteofrance.com/actualites-et-dossiers/quest-ce-que-la-vigilance.
- Real-time road traffic: Bison Futé maps: bison-fute.gouv.fr/maintenant.html.
- Useful definitions: black ice: fr.wikipedia.org/wiki/Verglas; shower: fr.wikipedia.org/wiki/Giboulée.
Prepare Your Evening And Thursday Morning
- Before leaving: check your route, the alert level in your department, traffic and road conditions. Allow extra time.
- On the road: drive smoothly, avoid sudden braking, use engine braking, lights on during showers.
- On foot: watch for icy sidewalks and stairs; favor shoes with grippy soles.
- Local authorities: anticipate salting rounds, secure school access and bus stops.
Reference time: elements consolidated from the 6 a.m. and 10 a.m. bulletins of Wednesday 11/19/2025. Vigilance information may evolve during the day and overnight Wednesday to Thursday.
Editor’s note: Possible local upgrade to orange alert by Météo-France, depending on updates.
