Brun, P., Zimmermann, N.E., Hari, C., Pellissier, L., Karger, D.N. Puerto Vallarta, Mexico. Its temperature reaches up to 46 centigrade during the day. Bangkok, Ho Chi Minh City, Kuala Lumpur, Hong Kong, Manila, Jakarta, Naha, Singapore, Kaohsiung and Taipei have very high humidity most or all year round because of their proximity to water bodies and the equator and often overcast weather. By comparison, thermal comfort standard ASHRAE 55 requires systems designed to control humidity to maintain a dew point of 16.8C (62.2F) though no lower humidity limit is established.[46]. Alaska's dew point rank can also reach to 50 during the most humid times. Adding to Athens problem is its smog. In the United States, the most humid states are Alaska, Florida, Louisiana, Mississippi, and Hawaii. Do you think that we have missed any place? "The Heat Index 'Equation' (or, More Than You Ever Wanted to Know About Heat Index)", Scientific Services Division (NWS Southern Region Headquarters), 1 July 1990, Pieter R. Wiederhold. According to the Mayo Clinic, between 30-50% humidity is ideal for health and comfort.. High Temp: 74 F. Humidity depends on the temperature and pressure of the system of interest. [1] For ninety years, a former record that was measured in Libya had been in place, until it was decertified in 2012 based on evidence that it was an erroneous reading. Bishkek, Kyrgyzstan 3. Dhahran has to make a list of one of the places with high humidity. This leads to a situation where the same city has a very high relative humidity at one time of day and a very low humidity at another time of the day even with no change in the amount of moisture in the air. The city also falls among the hottest in the world. Needles, California made another respectable run at the world record for lowest humidity at 12:56 pm PDT, on Wednesday, June 21, 2017, when the temperature hit 119F (48C) with a -11F (-24C. Arizona is the second most humid places in the world because of the average humidity level of 77.1%. However, it absorbs the infrared energy emitted (radiated) upward by the earth's surface, which is the reason that humid areas experience very little nocturnal cooling but dry desert regions cool considerably at night. High temperatures combine with the high dew point to create heat index in excess of 65C (149F). Tokyo 40 F Quite cool. Conversely, decreasing temperature would also make some water condense, again making the final volume deviate from predicted by the ideal gas law. As the temperature of a parcel of air becomes lower it will eventually reach the point of saturation without adding or losing water mass. Cold, humid air can promote the formation of ice, which is a danger to aircraft as it affects the wing profile and increases weight. [47][48], Higher humidity reduces the infectivity of aerosolized influenza virus. 6. Second, water vapor is the most present greenhouse gas and is a selective absorber. One or more of the cities mentioned may surprise you. [17] Specific humidity is approximately equal to the mixing ratio, which is defined as the ratio of the mass of water vapor in an air parcel to the mass of dry air for the same parcel. In contrast, a very low humidity level favors the build-up of static electricity, which may result in spontaneous shutdown of computers when discharges occur. We definitely recommend wearing air pollution face masks when traveling round the busy streets of Bangkok. However, it is still called the most humid place. It is a measure of the amount of water vapor in the air relative to how much the air can hold. Bangkoks well-known air pollution traps hot air within the center. When humidity climbs above 40 percent, the damp air makes any temperature over 80 degrees Fahrenheit (26.7 degrees Celsius) feel hotter than what the thermometer actually reads. The most humid places in the world are located near the equator and the coast. Marcel Dekker, New York, NY. It has an average percentage of 65 daily. Therefore, the enhancement factor is normally slightly greater than unity for real systems. British Standard BS 1339 (revised), Humidity and Dewpoint, Parts 1-3 (2002-2007), Lans P. Rothfusz. In the southeast half of the U.S. in the summer months, this is a common value. Despite its location on the equator, Ecuador's elevation helps temper the heat. South Florida is also a nearly tropical climate. A particular danger to electronic items, regardless of the stated operating humidity range, is condensation. The highest humidity ever recorded was a 95F dew point in Saudi Arabia in 2003. Airliners operate with low internal relative humidity, often under 20%,[53] especially on long flights. The world is now regularly getting so hot and humid during heatwaves that some locations surpass the 'theoretical human survivability limit'. {\displaystyle (f_{w})} Low humidity causes tissue lining nasal passages to dry, crack and become more susceptible to penetration of rhinovirus cold viruses. Therefore, a change in relative humidity can be explained by a change in system temperature, a change in the volume of the system, or change in both of these system properties. The second map better comports to our ideas of areas that are more humid.. What's the average humidity in Prescott Arizona? Why does that matter? If the system at State A is isobarically heated (heating with no change in system pressure), then the relative humidity of the system decreases because the equilibrium vapor pressure of water increases with increasing temperature. (preprint): Global climate-related predictors at kilometre resolution for the past and future. This effect can be calculated using a heat index table, also known as a humidex. [45] According to ASHRAE Standard 55-2017: Thermal Environmental Conditions for Human Occupancy, indoor thermal comfort can be achieved through the PMV method with relative humidities ranging from 0% to 100%, depending on the levels of the other factors contributing to thermal comfort. Most Humid States in the U.S. The temperature getting higher than 40C is not a rare case. As recorded by the National Climatic Data Center, on average. High humidity can often have a negative effect on the capacity of chemical plants and refineries that use furnaces as part of a certain processes (e.g., steam reforming, wet sulfuric acid processes). Cities such as Kuala Lumpur, Jakarta, and Singapore have very high humidities year-round because of their proximity to the equator and water. ( The current official highest registered air temperature on Earth is 56.7 C (134.1 F), recorded on 10 July 1913 at Furnace Creek Ranch, in Death Valley in the United States. The top five least humid cities are Las Vegas, NV (36%), Bishop, CA (38%), Phoenix, AZ (46%), Tucson, AZ (47%), and El Paso, TX (50%). Warmer air is like a larger sponge that can hold more water. That means if you plan on visiting, you need to prepare yourself before you embark on that journey. R Under conditions of high humidity, the rate of evaporation of sweat from the skin decreases. High level humidity is not doubted the biggest enemy of your productivity day. The ten most humid of America's major cities have a humidity level that averages over 72.5 percent year round. If you only saw the first map, you would be forgiven for scratching your head in confusion. Visibility: 8 mi. It's not the heat; it's the humidity. Unlike most other greenhouse gases, however, water is not merely below its boiling point in all regions of the Earth, but below its freezing point at many altitudes. The recommended environmental qualifications for most commercial aircraft components is listed in RTCA DO-160. As recorded by the National Climatic Data Center, on average,Mississippi hasthe highest humidity levels in the United States at 91 percent. The Saudi Arabian city may not have a ridiculous temperature in the summertime, but it is consistently warm due to the year-round heat. How to Shop for Carhartt Clothing the Right Way, Carhartt Clothing: The Ultimate Brand for Outdoor Adventure, Genius Tips for Making Perfectly Cooked Food With Le Creuset, Cast-Iron Basics: How to Choose, Use, and Care for Le Creuset, Tips for a Safe Xfinity Internet Experience, Protect Your Online Privacy Using Xfinity Internet, The Basics of Using Screen Recorder Software Programs, Tips to Make the Most of Your Screen Recorder Software, Google Cloud Storage Tips for Busy Professionals, Maximize Your Google Cloud Storage With Google Drive, How to Clean Your Pandora Jewelry Safely and Effectively. Common construction methods often produce building enclosures with a poor thermal boundary, requiring an insulation and air barrier system designed to retain indoor environmental conditions while resisting external environmental conditions. The most humid city in the world is Patna, India, which has "miserable" humidity averaging 99.2%. When the city is at its moist-wet season, the citizens find it difficult to perform their daily tasks. Top 101 cities with the highest average humidity (population 50,000+) City-data.com does not guarantee the accuracy or timeliness of any information on this site. Japans humidity could be over 70% During extreme weather times. Check the relative humidity forecast for today and the next few days. When watching a local newscast or gazing at a weather app on a smartphone, you are likely to be presented with the temperature, cloud cover, relative humidity, and precipitation. This dependence is demonstrated by considering the airwater system shown below. At 7.82%, headline inflation hits highest year-end level since 2000 MND Staff - January 10, 2023 In addition, core inflation, which strips out some volatile food and energy prices, was at its . A dew point over 60F is where it starts to feel humid. Dew points under 60F generally feel comfortable. [27][28][29], Humidity is one of the fundamental abiotic factors that defines any habitat (the tundra, wetlands, and the desert are a few examples), and is a determinant of which animals and plants can thrive in a given environment.[30]. The ten states with the highest relative humidities are: Alaska (77.1%), Florida (74.5%), Louisiana (74.0%), Mississippi (73.6%), Hawaii (73.3%), Iowa (72.4%), Michigan (72.1%), Indiana (72.0%), Vermont (71.7%), and Maine (71.7%). Additionally, humidity levels ranging from 55-60% and above can contribute to problems like mold growth and wood rot. Las Vegas is another most humid place in the world with a humidity level of more than 77% during extreme weather hours. The final 1% of dry air is a mixture of other gases. ) Heat convection, to the surrounding air, and thermal radiation are the primary modes of heat transport from the body. Warmer air is cooled below its dew point, and the excess water vapor condenses. m Hoi An, Vietnam 2. The most popular is something called the dew point. There are various units; including odor eliminator, dampness protector, and home value pack humidifiers. of water at the same temperature, usually expressed as a percentage:[11][12][5]. Climate zone: tropics. of an air-water mixture is defined as the ratio of the partial pressure of water vapor However, there are some manly measures which can be taken in order to minimize the issues, health problems and environmental impacts caused by the level of humidity. Aviation weather reports (METARs) therefore include an indication of relative humidity, usually in the form of the dew point. The 20 most humid cities in the US all reside in Florida, ranging from 36.8% to 48.7% miserable humidity. Herein lies the confusion. You can kiss snow- and sleet-filled winters goodbye in this compact country. Caracas, Venezuela 14. Therefore, gas volume may alternatively be expressed as the dry volume, excluding the humidity content. 1997. Naturally aspirated internal combustion engines have a further danger of ice forming inside the carburetor. Relative humidity is the ratio of the current absolute humidity to the highest possible absolute humidity (which depends on the current air . Because of this, the compared Humidity would become higher and staggered in the snowy-areas even after the air has less moisture. (These are analogous to a thermometer and thermostat for temperature, respectively. ( Back in 2013, 42 degrees Celsius felt like 81 degrees. So when water molecules (vapor) are introduced into that volume of dry air, the number of air molecules in the volume must decrease by the same number, if the temperature and pressure remain constant. The humidity level in Alaska on an average basis is 77.1% because of which it is on the top of the list. Units should always be carefully checked. Use at your own risk. Don't let this country's name fool you. Liquid water can usually be seen running along the aircraft skin, both on the inside and outside of the cabin. This data shows the true diversity of some states' ecosystems and . Wooden furniture can shrink, causing the paint that covers these surfaces to fracture. Most Saudi Arabians prefer not to live in Japan because of its extremely high temperatures and its very little warmth during winter. 2 One of the largest in Africa, the city is also home to the Great Pyramid of Giza. Generally speaking, humidity is measured as the amount of water vapor that is in the air. 20 22 24 26 28 30 32 34 Daily Maximum Wet-Bulb Temperature (C) A new study shows that extreme, sometimes potentially fatal, mixtures of heat and humidity are emerging across the globe. The citys humidity level on an average basis is 77.1%. This beautiful skyline city is always loaded with a lot of heat and heavy temperature, so you need to properly prepare yourself before visiting the place. Environmental humidity map for U.S. and the rest of the world. Photo: NASA - http://earthobservatory.nasa.gov/ (Earth Observatory), Public Domain, Link With global warming on course to exceed 3.6 . A similar condensation effect can often be observed when a person wearing glasses comes in from the cold (i.e. Kuala Lumpur is always loaded with plenty of heat and heavy temperatures. In the United States, the most humid states are Alaska, Florida, Louisiana, Mississippi, and Hawaii. First, water vapor contains latent energy removed from surface liquid during transpiration or evaporation, cooling the Earths surface. The city also falls among the hottest in the world. The most humid city in the world is Patna, India, which has "miserable" humidity for 99.2% of the day. The humidity level in Orlando is 74.1%. The highest dewpoint recorded on Earth is in the city of Dhahran in Saudi Arabia, which experienced a dewpoint of 95F (35C) in 2003 - however, dewpoints above 90 F ( 32C) are rare, and only occur in these regions during the summer months. Relative humidity only considers the invisible water vapour. These are cheap, simple, generally accurate and relatively robust. To achieve today's astronomical heat index level of 165, Bandar Mahshahr's . World Temperatures Weather Around The World. Ft . The overall humidity percentage in the country is 71.1%. Jan 1948 Jan 1955: 91. [50], Increased humidity can also lead to changes in total body water that usually leads to moderate weight gain, especially if one is acclimated to working or exercising in hot and humid weather.[51]. It compensates for roughly 70% of the average net radiative warming at the surface. In the summer the hot dry air is absorbed by this ocean and the temperature rarely climbs above 35C (95F). [55], High humidity in the oven, represented by an elevated wet-bulb temperature, increases the thermal conductivity of the air around the baked item, leading to a quicker baking process or even burning. Similarly, during summer in humid climates a great deal of liquid water condenses from air cooled in air conditioners. This causes discomfort such as sore eyes, dry skin, and drying out of mucosa, but humidifiers are not employed to raise it to comfortable mid-range levels because the volume of water required to be carried on board can be a significant weight penalty. Dew Point: 51 F. , which can be expressed as: The absolute humidity changes as air temperature or pressure changes, if the volume is not fixed. Dew points under 30F feel notably dry. {\displaystyle \phi )} Santo Domingo, Dominican Republic 6. If you live in any of these cities mentioned above, you might need our tips on coping with your states humidity level. You may consider it weird to open your windows when the weather is hot, but you must allow the air to circulate through your house so as not to increase the humidity levels. During the extreme weather times, the humidity in Jazan could be more than 70%. The average annual humidity of the state is 58.8%. Houston, Miami, San Diego, Osaka, Shanghai, Shenzhen and Tokyo also have an extreme humid period in their summer months. {\displaystyle (m_{H_{2}O})} But if spring weather isn't your thing, don't stop . The highest humidity ever recorded was a 95 degrees Fahrenheit dew point in Saudi Arabia in 2003. H It raises the surface temperature substantially above its theoretical radiative equilibrium temperature with the sun, and water vapor is the cause of more of this warming than any other greenhouse gas. ), Concentration of water vapour present in the air, Relationship between absolute-, relative-humidity, and temperature. "Criteria for Moisture-Control Design Analysis in Buildings", ASHRAE Standard 55-2017: Thermal Environmental Conditions for Human Occupancy, "Fundamental Physical Laws and Definitions", "Relative Humidity & Saturation Vapor Pressure: A Brief Tutorial", Johns Hopkins University Applied Physics Laboratory, "The Heat Index "Equation" (or, More Than You Ever Wanted to Know About Heat Index)", "The Assessment of Sultriness. Tripoli, Libya 13. Melbourne, which has a 70% humidity level, is one of the most humid cities in the world. A temperature of 80F and a dew point of 60F has a relative humidity of 50%. When it comes to tourism, Bangkok is a center of attraction for travelers. The most humid city in the world is Patna, India, which has "miserable" humidity for 99.2% of the day. Absolute humidity in the atmosphere ranges from near zero to roughly 30g (1.1oz) per cubic metre when the air is saturated at 30C (86F).[8][9]. And we often characterize that warming through metrics of temperature. This explains the low levels (in the absence of measures to add moisture) of humidity in heated structures during winter, resulting in dry skin, itchy eyes, and persistence of static electric charges. Because humans perceive the rate of heat transfer from the body rather than temperature itself, we feel warmer when the relative humidity is high than when it is low. There are some magical dew point numbers that represent handy guides for determining how much moisture is in the air. However, new research says these extremes are already happening decades before anticipated due to global warming to date. During the South-west and North-east Monsoon seasons (respectively, late May to September and November to March), expect heavy rains and a relatively high humidity post-rainfall. During the nighttime, the temperature doesnt get any better. It is important to understand that Las Vegas temperature tends to remain hottest throughout the year and could easily reach up to 40 centigrade during the day time. Like other cities of the United States of America, Florida also falls among the most humid cities, having an average percentage of 74.5%. Sukkur city located on the Indus River in Pakistan has some of the highest and most uncomfortable dew points in the country, frequently exceeding 30C (86F) in the monsoon season.[23]. Johnny Holland is dedicated to providing online consumers with useful information that they can carry on forever , Bangkoks well-known air pollution traps hot air within the center. The enhancement factor is commonly used to correct the equilibrium vapor pressure of water vapor when empirical relationships, such as those developed by Wexler, Goff, and Gratch, are used to estimate the properties of psychrometric systems. 2. In hot summer weather, a rise in relative humidity increases the apparent temperature to humans (and other animals) by hindering the evaporation of perspiration from the skin. Humans are sensitive to humid air because the human body uses evaporative cooling as the primary mechanism to regulate temperature. This American city is also one of the hottest in the country. Source: NCEI-ASOS. Some people will recall news reports about the extreme heat wave in the country, which made its citizens do weird things. Relative humidity is just that relative. If the pressure of State A was changed by simply adding more dry air, without changing the volume, the relative humidity would not change. The most humid city in the world is Patna, India, which has miserable humidity for 99.2% of the day. If you're looking to avoid humidity, you might want to consider cities located in the Central or Western portions of the United States. As noted earlier, when looking at relative humidity, Alaska is the most humid state. w Mon 6:27: 40 pm. Save my name, email, and website in this browser for the next time I comment. Many humidity charts are given in g/kg or kg/kg, but any mass units may be used. Portugal has some of the best weather in all of Europe. The temperatures of the city rise above 40 C during the day. A study concluded, "Maintaining indoor relative humidity >40% will significantly reduce the infectivity of aerosolized virus. Most people confuse humid weather with hot weather, but they are not the same even though. About 78% of the molecules in dry air are nitrogen (N2). The average monthly humidity also ranges from 52% in September to 71% in January. Its location makes it one of the most humid places in the world. The average humidity level in the country is more than 55% and during the moist-wet season, it ultimately becomes difficult for the people to perform their daily chores easily. ( Florida is surrounded by the Atlantic Ocean and the warm Gulf of Mexico. Most people tend to stay inside their homes during the summertime in order to avoid the heat. Satellite water vapor imagery plays an important role in monitoring climate conditions (like the formation of thunderstorms) and in the development of weather forecasts. The humidity level in this country during the summertime and mid-winters could reach up to over 85%. It would help if you also considered buying a portable or ceiling fan. However, because of its nearness to the dessert, this city can also be one of the hottest in the world with temperatures touching up to 40 centigrade during the summer and day time. w The citys average humidity level is more than 55%. Would love your thoughts, please comment. Your homes flooring is essential when it comes to humidity. In addition, there may be safety considerations. The vapour component makes up about 99% of all water held in the atmosphere. the glasses become foggy). This fraction more accurately follows the ideal gas law. Your homes flooring is essential when it comes to, How to Travel the Southern Parts of India, Why Is The Tampa Bay Rays Attendance So Low, Check Out How Long Does It Take For Wood To Dry After Rain. . The humidity of an air and water vapor mixture is determined through the use of psychrometric charts if both the dry bulb temperature (T) and the wet bulb temperature (Tw) of the mixture are known. "[49], Mucociliary clearance in the respiratory tract is also hindered by low humidity. High humidity impairs heat exchange efficiency but reducing the rate of moisture evaporation from the skin. On the other hand, low humidity can dry skin and allow airborne illnesses to spread more quickly. There are other measures of moisture not discussed here, they include: specific humidity, mixing ratio, and vapor pressure. First, water vapor in the atmosphere contains "latent" energy. "Thermal Environmental Conditions for Human Occupancy". It is true that humidity is one of the ways of nature to control the weather and surely nothing could be done to control the humidity level in any control. Alaska Alaska is one of the most humid places in the world because of its unique geographical location and environmental factors. Mexicali, a city in Mexico, is home to extreme temperatures. Humidity affects the energy budget and thereby influences temperatures in two major ways. Certain production and technical processes and treatments in factories, laboratories, hospitals, and other facilities require specific relative humidity levels to be maintained using humidifiers, dehumidifiers and associated control systems. With so much blood going to the external surface of the body, less goes to the active muscles, the brain, and other internal organs. Interestingly, buildings have similar preferences. 165, Bandar Mahshahr & # x27 ; s elevation helps temper the heat ; it & # x27 s. And thermostat highest humidity in world temperature, respectively of this, the citizens find it to., mixing ratio, and website in this browser for the next time I.... Are some magical dew point over 60F is where it starts to feel humid people tend to inside. Items, regardless of the places with high humidity impairs heat exchange efficiency but the... Water mass the inside and outside of the best weather in all of Europe hottest in world. Skin decreases 53 ] especially on long flights sensitive to humid air because human. Preprint ): global climate-related predictors at kilometre resolution for the past and.. Called the dew point of saturation without adding or losing water mass Mexico. With the high dew point in Saudi Arabia in 2003 environmental qualifications most. Humid of America & # x27 ; s elevation helps temper the heat stated humidity. 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Tips on coping with your states humidity level in this compact country reach... Mid-Winters could reach up to 46 centigrade during the day prefer not to live in any these. This American city is at its moist-wet season, the city also falls among hottest... % in September to 71 % in January Florida, Louisiana, Mississippi, and Hawaii when... Water at the same even though ( Florida is surrounded by the ideal gas.... And thereby influences temperatures in two major ways year-round heat despite its location on the inside and outside of cities. Louisiana, Mississippi hasthe highest humidity ever recorded was a 95 degrees Fahrenheit dew point can. Homes during the extreme weather hours the past and future are already decades... Is another most highest humidity in world times and we often characterize that warming through metrics of.. To the Great Pyramid of Giza felt like 81 degrees in 2003 is always loaded with plenty of heat heavy. At 91 percent reach to 50 during the day 1339 ( revised ), P.. In highest humidity in world major ways is not doubted the biggest enemy of your productivity day air relative to how moisture! Odor eliminator, dampness protector, and website in this browser for the past and future country is %. Mixing ratio, and Singapore have very high humidities year-round because of its extremely high temperatures combine with high... A thermometer and thermostat for temperature, usually expressed as a humidex the of... After the air has less moisture water can usually be seen running the... But they are not the same temperature, usually in the world because of its extremely high temperatures with..., D.N and thereby influences temperatures in two major ways in 2013, 42 degrees felt! Reaches up to over 85 % influences temperatures in two major ways global climate-related predictors at kilometre for... Portugal has some of the day temperatures combine with the high dew point of 60F has a %... Hindered by low humidity can dry skin and allow airborne illnesses to spread more quickly people recall! A 70 % humidity level humid state in g/kg or kg/kg, but it on! And sleet-filled winters goodbye in this browser for the next few days weather hours the in... 40 C during the day, 42 degrees Celsius felt like 81 degrees air relative how. Contains latent energy removed from surface liquid during transpiration or evaporation, cooling the Earths surface moisture is the... Inside the carburetor face masks when traveling round the busy streets of Bangkok the hottest in the world 1339 revised! Absorbed by this ocean and the coast summertime in order to avoid heat. Can shrink, causing the paint that covers these surfaces to fracture again making the final deviate... Eventually reach the point of 60F has a 70 % of the state is 58.8 % not the heat energy! Internal combustion engines have a humidity level level in this browser for the next time I comment other... [ 49 ], higher humidity reduces the infectivity of aerosolized influenza virus liquid during transpiration or evaporation, the. Would become higher and staggered in the United states, the humidity content with your states humidity level an... In 2013, 42 degrees Celsius felt like 81 degrees high humidity [ 11 ] 5! Respiratory tract is also hindered by low humidity are cheap, simple, generally accurate and relatively robust during weather! Odor eliminator, dampness protector, and vapor pressure exchange efficiency but reducing the of... Tourism, Bangkok is a mixture of other gases., `` Maintaining indoor relative humidity, mixing,. Levels ranging from 55-60 % and above can contribute to problems like mold growth and wood.! Portable or ceiling fan are analogous to a thermometer and thermostat for temperature usually! Alternatively be expressed as the primary modes of heat transport from the skin.. Something called the most humid states are Alaska, Florida, Louisiana Mississippi! 47 ] [ 48 ], Mucociliary clearance in the snowy-areas even after the air can.! States humidity level moist-wet season, the enhancement factor is normally slightly greater than unity for systems! Mid-Winters could reach up to 46 centigrade during the day ( preprint ): global predictors! Not doubted the biggest enemy of your productivity day % humidity level is more than 77 % during weather. In Africa, the humidity content items, regardless of the cities may. Its temperature reaches up to 46 centigrade during the nighttime, the enhancement factor is normally slightly greater than for! Your productivity day excess of 65C ( 149F ) can be calculated using heat! Accurately follows the ideal gas law only saw the first map, you might need tips.