{"id":60499,"date":"2026-07-17T19:33:58","date_gmt":"2026-07-17T17:33:58","guid":{"rendered":"https:\/\/alertes-meteo.com\/?page_id=60499"},"modified":"2026-07-17T19:33:58","modified_gmt":"2026-07-17T17:33:58","slug":"cartes-meteo-en-france-precipitations-sur-24h-climatologie-en-france","status":"publish","type":"page","link":"https:\/\/alertes-meteo.com\/index.php\/cartes-meteo\/cartes-meteo-en-france-precipitations-sur-24h-climatologie-en-france\/","title":{"rendered":"Cartes M\u00e9t\u00e9o en France &#8211;  Pr\u00e9cipitations sur 24h climatologie en France"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1575px;margin-left: calc(-5% \/ 2 );margin-right: calc(-5% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-blend:overlay;--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.375%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:2.375%;--awb-width-medium:100%;--awb-spacing-right-medium:2.375%;--awb-spacing-left-medium:2.375%;--awb-width-small:100%;--awb-spacing-right-small:2.375%;--awb-spacing-left-small:2.375%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><h1 align=\"center\"><b>Comment lire une carte des\u00a0<\/b><b>pr\u00e9cipitations sur 24h climatologie ? (actualis\u00e9es en temps r\u00e9el)<\/b><\/h1>\n<p><strong>Lecture d\u2019une carte de pluie 24h<\/strong><br \/>\nUne carte de pluie 24h montre la quantit\u00e9 totale de pr\u00e9cipitations tomb\u00e9e sur une p\u00e9riode continue de 24 heures, g\u00e9n\u00e9ralement calcul\u00e9e de 06h UTC \u00e0 06h UTC le lendemain en France. Les valeurs sont exprim\u00e9es en millim\u00e8tres de pluie (mm), chaque couleur de la l\u00e9gende correspondant \u00e0 une tranche de cumuls (par exemple 1\u20115 mm, 10\u201125 mm, etc.). Sur les cartes d\u2019observation, les cumuls proviennent de r\u00e9seaux de pluviom\u00e8tres (SYNOP, METAR, r\u00e9seaux principaux et secondaires de M\u00e9t\u00e9o\u2011France) et, parfois, d\u2019une lame d\u2019eau radar corrig\u00e9e par les pluviom\u00e8tres.<\/p>\n<\/div><div style=\"text-align:center; margin:20px 0;\">\n  <button\n    type=\"button\"\n    onclick=\"window.location.href='https:\/\/alertes-meteo.com\/index.php\/cartes-meteo\/calculer-lindice-humidex-temperature-ressentie-avec-lhumidite\/';\"\n    style=\"padding:14px 28px; background:#1683c5; color:white; border:none; border-radius:8px; font-size:18px; font-weight:bold; cursor:pointer;\">\n    Calcul indice humidex\n  <\/button>\n<\/div><div style=\"text-align:center;\">\n  <img class=\"lazyload\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-orig-src=\"https:\/\/www.meteociel.fr\/cartes_obs\/rr.png\" \n       style=\"max-width:100%; height:auto;\" \n         alt=\"Carte des Cumuls de pluie sur 24h climatologie sur la France\">\n<\/div><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8902396130105212\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- bas de page -->\n<ins class=\"adsbygoogle\"\n     style=\"display:block\"\n     data-ad-client=\"ca-pub-8902396130105212\"\n     data-ad-slot=\"7724440717\"\n     data-ad-format=\"auto\"\n     data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><div class=\"fusion-text fusion-text-2\"><div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"faq-cartes-de-pluie-24h-en-france\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-lg first:mt-0 md:text-lg &#091;hr+&amp;&#093;:mt-4\">FAQ cartes de pluie 24h en France<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"1-questce-quune-carte-de-pluie-24h-en-france\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">1. Qu\u2019est\u2011ce qu\u2019une carte de pluie 24h en France ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Une carte de pluie 24h repr\u00e9sente le cumul des pr\u00e9cipitations tomb\u00e9es sur la France au cours des 24 derni\u00e8res heures, exprim\u00e9 en millim\u00e8tres de lame d\u2019eau au sol. Elle permet de visualiser rapidement o\u00f9 les pluies ont \u00e9t\u00e9 les plus fortes et o\u00f9 les cumuls sont rest\u00e9s faibles ou nuls.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"2-comment-sont-calculs-les-cumuls-de-pluie-sur-24h\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">2. Comment sont calcul\u00e9s les cumuls de pluie sur 24h ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Les cumuls de pluie sur 24h sont calcul\u00e9s en additionnant toutes les pr\u00e9cipitations mesur\u00e9es par les pluviom\u00e8tres sur une p\u00e9riode de 24 heures, souvent de 06h UTC \u00e0 06h UTC le lendemain pour les cartes nationales fran\u00e7aises. Certaines cartes utilisent une estimation appel\u00e9e \u00ab lame d\u2019eau radar \u00bb, qui combine les donn\u00e9es de r\u00e9flectivit\u00e9 radar et les mesures au sol avec un facteur correctif pour am\u00e9liorer la pr\u00e9cision.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"3-quelle-unit-est-utilise-pour-les-cumuls-de-pluie\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">3. Quelle unit\u00e9 est utilis\u00e9e pour les cumuls de pluie ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Les cumuls de pluie sont exprim\u00e9s en millim\u00e8tres (mm), ce qui correspond \u00e0 l\u2019\u00e9paisseur de la lame d\u2019eau au sol si la pluie s\u2019accumulait uniform\u00e9ment sur une surface horizontale. Par exemple, 10 mm de pluie signifient qu\u2019une couche d\u2019eau de 10 mm d\u2019\u00e9paisseur s\u2019est d\u00e9pos\u00e9e sur le sol sur la p\u00e9riode consid\u00e9r\u00e9e.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"4-comment-lire-les-couleurs-dune-carte-de-pluie-24\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">4. Comment lire les couleurs d\u2019une carte de pluie 24h ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Les couleurs d\u2019une carte de pluie 24h correspondent \u00e0 des classes de cumuls en millim\u00e8tres, indiqu\u00e9es dans la l\u00e9gende : du bleu ou vert pour les faibles cumuls jusqu\u2019au jaune, orange ou rouge pour les pluies fortes \u00e0 tr\u00e8s fortes. En observant la l\u00e9gende, tu peux associer chaque couleur \u00e0 une plage de valeurs et identifier rapidement les zones les plus arros\u00e9es.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"5-quelle-diffrence-entre-carte-dobservation-et-car\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">5. Quelle diff\u00e9rence entre carte d\u2019observation et carte climatologique de pluie ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Une carte d\u2019observation montre uniquement les cumuls mesur\u00e9s sur 24h pour une date donn\u00e9e, sans tenir compte du climat pass\u00e9. Une carte climatologique compare ces cumuls aux normales de pr\u00e9cipitations \u00e9tablies sur une p\u00e9riode de r\u00e9f\u00e9rence (par exemple 1991\u20112020), ce qui permet de qualifier la p\u00e9riode comme normale, d\u00e9ficitaire ou exc\u00e9dentaire.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"6-comment-savoir-si-un-pisode-pluvieux-est-excepti\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">6. Comment savoir si un \u00e9pisode pluvieux est exceptionnel ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Un \u00e9pisode est consid\u00e9r\u00e9 comme exceptionnel lorsque les cumuls de pluie 24h d\u00e9passent largement les valeurs habituelles pour la saison et la r\u00e9gion, par rapport aux normales climatiques et aux quantiles historiques (par exemple au\u2011del\u00e0 du 90e quantile). Les cartes climatologiques montrent ces exc\u00e9dents par des couleurs ou des indicateurs d\u00e9di\u00e9s, ce qui aide \u00e0 d\u00e9tecter les \u00e9pisodes tr\u00e8s humides ou tr\u00e8s secs.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"7-comment-utiliser-une-carte-de-pluie-24h-pour-la\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">7. Comment utiliser une carte de pluie 24h pour la pr\u00e9vention des risques ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Une carte de pluie 24h permet d\u2019identifier imm\u00e9diatement les secteurs ayant re\u00e7u de forts cumuls, zones potentiellement expos\u00e9es aux ruissellements, crues rapides et glissements de terrain. En combinant ces informations avec la connaissance locale des bassins versants et des sols, tu peux anticiper les impacts et adapter la communication de vigilance vers le public.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"8-quelles-sont-les-principales-sources-de-donnes-d\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">8. Quelles sont les principales sources de donn\u00e9es des cartes de pluie 24h ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Les cartes de pluie 24h s\u2019appuient sur les r\u00e9seaux de stations m\u00e9t\u00e9orologiques au sol (SYNOP, METAR, r\u00e9seaux principal et secondaire de M\u00e9t\u00e9o\u2011France) qui mesurent en continu les pr\u00e9cipitations. Elles peuvent \u00eatre compl\u00e9t\u00e9es par des lames d\u2019eau radar issues des radars de pr\u00e9cipitations, corrig\u00e9es par les pluviom\u00e8tres pour fiabiliser les cumuls.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"9--quelle-heure-sont-actualises-les-cartes-de-plui\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">9. \u00c0 quelle heure sont actualis\u00e9es les cartes de pluie 24h en France ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Pour de nombreux services d\u2019observation, le cumul de pr\u00e9cipitations sur 24h est arr\u00eat\u00e9 \u00e0 06h UTC (07h en hiver, 08h en \u00e9t\u00e9 en heure locale fran\u00e7aise) et la carte quotidienne est actualis\u00e9e peu apr\u00e8s cette heure. Les cartes radar de pr\u00e9cipitations sont quant \u00e0 elles rafra\u00eechies en g\u00e9n\u00e9ral toutes les 15 minutes, permettant un suivi quasi temps r\u00e9el de la pluie.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<h2 id=\"10-comment-interprter-une-carte-de-pluie-24h-pour\" class=\"font-editorial font-bold mb-2 mt-4 &#091;.has-inline-images_&amp;&#093;:clear-end text-base first:mt-0\">10. Comment interpr\u00e9ter une carte de pluie 24h pour mon d\u00e9partement ?<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"has-inline-images my-2 first:mt-0 &#091;&amp;:has(&#091;data-inline-type=image&#093;)+&amp;:has(&#091;data-inline-type=image&#093;)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;:has(table)_&#091;data-inline-type=image&#093;&#093;:hidden &#091;&amp;_h1:first-of-type&#093;:mt-8 &#091;&amp;_h2:first-of-type&#093;:mt-6\">\n<div>\n<div class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 &#091;word-break:break-word&#093; &#091;&amp;_&gt;*:first-child&#093;:mt-0 &#091;&amp;_&gt;*:last-child&#093;:mb-0\" data-renderer=\"lm\">\n<p class=\"my-2 &#091;&amp;+p&#093;:mt-4 &#091;&amp;_strong:has(+br)&#093;:inline-block &#091;&amp;_strong:has(+br)&#093;:align-top\">Pour ton d\u00e9partement, commence par localiser la zone sur la carte, puis lis la couleur dominante et reporte\u2011toi \u00e0 la l\u00e9gende pour conna\u00eetre la plage de cumuls correspondante. Tu peux ensuite comparer ces cumuls aux normales ou aux indicateurs locaux de pr\u00e9cipitations et de s\u00e9cheresse pour savoir si la situation est plut\u00f4t s\u00e8che, normale ou tr\u00e8s arros\u00e9e.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"fusion-text fusion-text-3\"><p>Source : www.meteociel.fr<\/p>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":14485,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"Cartes m\u00e9t\u00e9o de pluie 24h en France : comment lire les cumuls et la climatologie des pr\u00e9cipitations","_seopress_titles_desc":"Apprends \u00e0 lire une carte de pluie 24h en France : cumuls en millim\u00e8tres, couleurs, lame d\u2019eau radar et comparaison \u00e0 la climatologie pour identifier \u00e9pisodes pluvieux, exc\u00e9dents et d\u00e9ficits.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"temperature mer","footnotes":""},"class_list":["post-60499","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages\/60499","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/comments?post=60499"}],"version-history":[{"count":1,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages\/60499\/revisions"}],"predecessor-version":[{"id":60500,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages\/60499\/revisions\/60500"}],"up":[{"embeddable":true,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages\/14485"}],"wp:attachment":[{"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/media?parent=60499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}