NEW : Portuguese military has dispatched at least 38 teams to help with search and rescue efforts . NEW : Weather has substantially improved , civil protection official says . CNN 's Umaro Djau contributed to this report . Madeira hit by heavy downpours overnight , triggering mudslide that killed five . Unknown number of people , perhaps dozens , are missing , official tells Barbosa .
NEW : Portuguese military has dispatched at least 38 teams to help with search and rescue efforts . NEW : Weather has substantially improved , civil protection official says . Madeira hit by heavy downpours overnight , triggering mudslide that killed five . Unknown number of people , perhaps dozens , are missing , official tells Barbosa .