Frost line map illinois

Repeat this several times over the course of an hour or two to thoroughly saturate the frozen ground with hot water. This will melt through the frost layer and make the dirt easier to dig into. The freeze line in N. Ky. is at least 16' If your footer is down to undisturbed earth, you can get by with a 12' or so footer.

Frost line map illinois. Step 1: Dig A Hole Using A Digger. Dig your fence post hole. The hole should be at least two feet deep. One of the most common ways to avoid the frost heave of fence posts is to ensure the hole is deeper than your region's frost line. Make inquiries to know the local frost level and try digging at least six inches deeper.

Illinois was both cooler and drier than the 1991-2020 normal in 2022. The statewide average annual temperature was 52.0 degrees, 0.6 degrees below normal and tied for the 51 st warmest on record. Statewide average total precipitation in 2022 was 37.24 inches, 3.51 inches below normal and the 61 st driest year on record.. 2022 Temperatures

About Frost Maps. Plantmaps maintains Frost data and maps for many regions on the earth. We've created Average First Frost Dates, Average Last Frost Dates and Average Number of days with Frost maps for most US States and Candian Provinces. Plantmaps also created maps for many countries around the world that are in latitudes where frost occurs.Yes, a good drainage base will help prevent frost heave. Gravel or crushed stone does not hold moisture, so it makes an excellent base. Sand works as well; it takes a layer of about 4 to 6 inches to be safe. As mentioned above, a slab on grade is not at any greater risk of frost heave than a basement, full stop.The Frost Potential maps show forecast low temperature thresholds for various locations across Australian weather station locations. The maps are updated each day and show forecasts for the next 48 hours. Each 24 hour forecast period ends at 00 UTC (ie.10 am EST, 9:30 am CST or 8 am WST).Central United States (e.g., Missouri, Illinois): 12 to 36 inches (30 to 91 cm) Northern United States (e.g., Minnesota, North Dakota): 36 inches (91 cm) or more; ... For instance, if you look at the frost line map of Texas, you'll see that the frost lines here can go pretty deep. Thus, determining the exact depth of the frost line in your ...An Interactive Map of Average First Frost Dates in Illinois and a list of locations in Illinois with Average First Frost DatesAlabama - 6 inches. Georgia - 5 inches. California - 5 inches. South Carolina - 4 inches. Louisiana - 4 inches. Hawaii - 0 inches. Florida - 0 inches. Along with these frost lines, it's also worth checking if any permits required for your deck from the state or Homeowners Association stipulate how deep your footings must be placed.Scroll down the page to the Illinois ZIP Code Map Image. See ZIP Codes on Google Maps and quickly check what ZIP Code an address is in with this free, interactive map tool. Use this ZIP Code lookup map to view ZIP Codes around you, and optionally also overlay U.S. city limits, townships and county lines.

Inspectors are generally in the office from 7 to 9 a.m., although schedules vary day to day. If you have to leave a voicemail for your inspector to set up an inspection, please be sure to reference your permit number and the address for the project so that they can find the correct file quickly. If you are unable to find your inspector's phone ...Illinois Frost Dates and Growing Season Dr. Jim Angel, State Climatologist. Frost is the formation of thin ice crystals on the ground or other surfaces in the form of scales, needles, feathers, or fans. ... The maps represent the period of 1981 to 2010, to match the standard normals.Apr 25, 2024 · The nationwide average water service line depth is 4.58 feet, but in Illinois, water lines are typically buried at a depth of 3.17 feet on average. How deep are sewer lines buried in Illinois? Water and sewer lines that are placed in trenches 24 inches in width or less will be buried a minimum of 42 inches (60 inches is suggested by the IL Dept ... The thermal conductivity is the rate of heat flow through a unit area under a thermal gradient (recall that 1 BTU is the energy (heat) required to raise the temperature of 1 lb of water 1 °F): Units: BTU/hr • ft 2 • °F/ft or BTU/hr • ft • °FFurther, k snow (loose) = 0.06, k snow (compact) = 0.20. In the range of water contents (5 to ...A frost protected shallow foundation (FPSF) is a practical alternative to deeper, more-costly foundations in cold regions with seasonal ground freezing and the potential for frost heave. Find slab and foundation contractors near me. Figure 1 shows an FPSF and a conventional foundation. An FPSF incorporates strategically placed insulation to ...The New Brunswick frost line is the depth that water in the ground freezes to in winter. The line varies depending on soil type, geology, and weather conditions. Where there is soil with organic material such as topsoil, a few feet below the surface, this depth can be as much as 1 metre (3.2 ft) or more near Fredericton or Saint John. In ...Belleville, Illinois, is the largest city south of Springfield, Illinois. A Google Map shows it's proximity to St. Louis, Missouri, and other surrounding communities. Download and print Belleville Main Street's Downtown Walking Guide featuring great places to shop, dine and play in downtown Belleville. Illinois South Tourism's Follow the ...Find local businesses, view maps and get driving directions in Google Maps.

The frost line in Illinois is 40 inches, so the water in the soil has not been known to freeze deeper than that point. In Chicago, building codes require that concrete supports be ...Central Illinois spans zones 5b and 6a. Frost-free date: April 11-30. First frost: October 11-20. Southern Illinois includes zone 6a, 6b and 7a. Frost-free date April 1-10. First frost: October 21-30. The frost dates are averages, but the Illinois State Water Survey has a map of the latest spring frost dates that is also a good guide to be ...Frost/Thaw Contour Map Effective 12:01 am, Friday, April 5, 2024, Spring season weights for heavy haul and Period 1 weights for service rigs will come into effect on roads province wide. Last Modified: April 2, 2024 Classification: Public Twp 31 Twp 31 Thaw Line - March 14, 2024 Thaw Line - March 18, 2024 Twp 46 Twp 46 The blue line in the figure shows the current depth to water table (in feet), the light gray area shows the historical range between the 10th percentile (i.e., very shallow) and 90th percentile (i.e., very deep) for each calendar day. The dark gray area shows the historical range between the 25th percentile and 75th percentile for each calendar ... List of Average Last Frost Dates for Locations in Illinois. Location. Average Last Frost Dates. Addison. May 11 - May 20. Algonquin. May 11 - May 20. Alsip. May 1 - May 10.Frost lines through the United States can vary broadly. For example, some of the Northern states have a frost line that can reach as deep as 60 inches while parts of Florida have no frost line at all. The Midwest portion of the country has a frost line that goes between 30 and 40 inches on average.

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Back To Map Wisconsin Extreme Frost Line Penetration (in inches) State Average Frost Depth: 65″ Source: U.S. Department of Commerce Central United States (e.g., Missouri, Illinois): 12 to 36 inches (30 to 91 cm) Northern United States (e.g., Minnesota, North Dakota): 36 inches (91 cm) or more; ... For instance, if you look at the frost line map of Texas, you'll see that the frost lines here can go pretty deep. Thus, determining the exact depth of the frost line in your ...Search for Illinois plat maps. Plat maps include information on property lines, lots, plot boundaries, streets, flood zones, public access, parcel numbers, lotBack To Map Louisiana Extreme Frost Line Penetration (in inches) State Average Frost Depth: 4″ Source: U.S. Department of Commerce1. The USDA Hardiness Zone Method. To find the average frost dates for your region, you first need to determine your hardiness zone or planting zone. You can do this by using our planting zone map tool. Click on your state to zoom in or enter your zip code to find the zone number of your specific area. Frost dates can vary widely within each ...Digging, constructing and insulating a footing and foundation system that deep is time consuming and expensive. A shallow foundation system can be a substantial savings for a new build. The building codes covering frost protected shallow foundation systems (FPSF) is in section R403.3 of the International Residential Code.

Extended below the frost line specified in Table R301.2. 2. ... Energy I-Codes Illinois Louisiana Maryland Montana New Mexico North Dakota Off-Site Construction PMG ... Updated Wind Speed maps match IBC and ASCE 7 maps. Deck design now considers snow load, tributary area for footing and post height, and guard details. ...Median first fall freeze dates range from mid- to late October in northwest and central Illinois to late October/early November in southern and northeastern Illinois. Approximately half the years between 1979 and 2018 experienced the first fall freeze before the median dates. Also, the median dates map clearly shows the effects of the developed ...Illinois Frost Line. Back To Map. Illinois Extreme Frost Line Penetration (in inches) State Average Frost Depth: 36″.Under code, generally, one-story buildings with footings on undisturbed soil with LBVs between 1,500 and 4,000 should have a minimum width of 12 inches. Two-story buildings require a minimum of 15-inch wide footings for 1,500 LBV soil. For 2,000 LBV soil or greater, two-story buildings may have 12-inch minimum wide footings.According to the 2023 USDA Hardiness Zone Map Chicago, Illinois is in Zones 6a (-10°F to -5°F), 6a (-10°F to -5°F) and 6b (-5°F to 0°F). This is a change from the 2012 USDA Hardiness Zone Map which has Chicago in Zones 5b (-15°F to -10°F) and 6a (-10°F to -5°F). Hardiness Zones for ChicagoIllinois.Illinois Frost Dates and Growing Season Dr. Jim Angel, State Climatologist. Frost is the formation of thin ice crystals on the ground or other surfaces in the form of scales, needles, feathers, or fans. If a frost period is severe enough to end the growing season or delay its beginning, it is referred to as a "killing frost".It is that time of year to discuss the nemesis of every gardener out there - the late spring frost or freeze. We have a full suite of maps showing the earliest, 1 in 10 years, median, 9 in 10 years, and latest frost (32 degrees) and freeze (28 degrees).. One of the things you notice about this map, and all the others in the series, is that even though the date for the last spring frost ...A frost depth map is a useful tool to give you a rough idea of how deep you need to dig into the soil to get to where the ground rarely freezes. Often, you'll see contour lines on a frost-depth map where any point along that line represents the frost depth in those towns and cities where the line crosses. These lines are just guidelines and ...The frost line in Indiana is the depth that groundwater in the soil freezes during the winter. The frost line depth in Indiana ranges from 30 to 60 inches, with 30 inches being the...The Frost line in Illinois is 36 inches. The Frost line in Indiana is 36 inches. The Frost line in Kansas is 32 inches. The Frost line in Kentucky is 15 inches. The Frost line in Louisiana is 4 inches. The Frost line in Massachusetts is 32 inches. The Frost line in Maryland is 30 inches. The Frost line in Maine is 74 inches.

The USDA has just released their new Plant Hardiness Zone Map. This is a much-needed update using the 30-year period of 1976-2005 versus the old USDA map which used the period 1974-1986. One of the outstanding features of the new map is the northward shift of the hardiness zones in Illinois. For example, the boundary between zones 5 and 6 have ...

Only if you are eligible will an estimated MAP grant appear on a financial aid award notification from your college. If you are a MAP recipient, refer to the Monetary Award Program (MAP) Rights & Responsibilities document for the appropriate academic year to obtain more detailed information regarding the program. 2024-25. 2023-24. Return to topGreene County - Carrollton. Grundy County - Morris. Hamilton County - McLeansboro. Hancock County - Carthage. Hardin County - Elizabethtown. Henderson County - Oquawka. Henry County - Cambridge. Iroquois County - Watseka. Jackson County - Murphysboro.More than 800,000 acres of Illinois land has been undermined for coal and minerals, according to the geological survey, and about one-fourth of that acreage is residential or "built-up" land. An estimated 330,000 homes in the state are built above coal mines. Much of St. Clair and Madison counties are undermined.The Illinois normals available on NCEI’s website and shown in the maps below based on data from 1991 through 2020. Available maps include precipitation, temperature, snowfall, heating degree days, and cooling degree days, as well as number of days above or below selected thresholds of precipitation, temperature, and snowfall. Ice Storms in Illinois. Freezing rain occurs when rain becomes supercooled and freezes upon impact with any cold surface. Ice storms – defined as long periods of freezing rain – can be very dangerous, destructive, and disruptive events. They cause traffic accidents along with slip and fall accidents to pedestrians. Seismicity map of the State of Illinois. The earthquake data shown on this map and listed in table 1 are a list of earthquakes that were originally used in preparing the Seismic Risk Studies in the United States (Algermissen, 1969) which have been recompiled and updated through 1977. The data have been reexamined and intensities assigned where ...Additional Gardening Related Climate Data for ZIP Code 60441 - Lockport, Illinois. 2023 Hardiness Zone: Zone 6a: -10°F to -5°F. Zone 5b: -15°F to -10°F. 2012 Hardiness Zone: Zone 5b: -15°F to -10°F. 1990 Hardiness Zone: Zone 1b: -15F to -10F. Average First Frost Date:Illinois Soil Moisture. As part of the Water and Atmospheric Resources Monitoring Program (WARM), the Illinois Climate Network monitors soil moisture conditions at several stations across the state. Continuous, hourly measurements have been made at many of these stations since the early 2000s. This relatively long record of soil moisture is an ...Back To Map Oregon Extreme Frost Line Penetration (in inches) State Average Frost Depth: 18″ Source: U.S. Department of Commerce, City of PortlandThe frost line shall be forty two inches (42") below grade. B. Concrete shall not be poured unless the outside temperature is at least twenty eight degrees Fahrenheit (28°F) and rising. If so, insulated blankets and tarps, as well as straw covered with plastic sheets are required after pour.

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NOTICE - WARM has moved. Please update your links (replace 'www' in the URL with 'warm' or follow this link).Thank you.What is the frost line for Illinois? The actual frost depth in Illinois varies from 24 inches in the southern part of the state to more than 40 inches in northern areas. What temperature is frost level? 32 °F Freezing or frost occurs when the air temperature falls below the freezing point of water (0 °C, 32 °F, 273 K). This is usually ...1806.1.1 - "The frost line in St. Louis County is established at 30" below ground grade." Hope this helps. Regards, Qshake. Eng-Tips Forums:Real Solutions for Real Problems Really Quick. RE: Frost Depth in St. Louis, Mo. MiketheEngineer (Structural) 27 Mar 09 11:22. Qshake is correct - 30'' to bottom of footing. Frost becomes more widespread when the temperature falls below 32°F with some freeze possible. A hard freeze is possible when temperatures fall below 28°F. In the 32F/28F Freeze Maps section, you'll find national and regional maps from the Midwest Regional Climate Center (MRCC) that depict the typical dates for freezes in the early fall, and ... I’m sure 42” is code in southern Illinois too Well, you would be wrong, my friend. The code definitely changes as you move down the state. For example, Champaign, Illinois is a 32" minimum footing depth, a full 10" fewer than the Chicagoland area, and Champaign is still Central Illinois.With out Migration Map, you can stay in the know on duck counts, waterfowl surveys, and migration reports from across the country. Our Migration Map is updated daily throughout the season, is interactive with various species and observable date ranges, and is completely free-to-use, so be sure to check it out! Migration Map.Illinois Department of Transportation Hanley Building 2300 S. Dirksen Parkway Springfield, IL 62764 (217) 782-7820 or TTY (866) 273-3681Dew and frost are actually the same phenomenon, except that dew occurs when the air temperature is above freezing while frost occurs when it is below. Both are condensation that oc...Illinois is home to several stunning waterfalls across its many state parks. These are the best waterfalls in Illinois that you should visit. When you think of the Midwest, chances... ….

On Wednesday, the frost line was at 36 to 42 inches in the north part of the city, about 26 inches in the central part of the city, and 24 to 30 inches to the south. It’s not that it is colder ...The National Weather Service issued a freeze warning for several northwest suburbs early Monday after overnight temperatures dipped below 32 degrees, foreshadowing several more frozen nights, forec…The public schools are organized into 1,063 public school districts . This section of the Illinois HomeTownLocator Gazetteer provides basic information for Illinois schools including name, address, phone number, school district contact information plus maps of school locations, attendance zones or boundary maps where availiable.Frost Depth Interactive Map. The custom map below depicts the United States residential building code frost depth by jurisdiction based on our research. The …Where the frost line depth requires deeper footings than indicated in Figure R403.1(1), the frost line depth strength required for weathering shall govern. The jurisdiction shall fill in the frost line depth column with the minimum depth of footing below finish grade. ... Energy I-Codes Illinois Louisiana Maryland Montana New Mexico North ...A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.R403.3 Frost-protected shallow foundations.. For buildings where the monthly mean temperature of the building is maintained at a minimum of 64°F (18°C), footings are not required to extend below the frost line when protected from frost by insulation in accordance with Figure R403.3(1) and Table R403.3(1).Foundations protected from frost in accordance with Figure R403.3(1) and Table R403.3(1 ...For example, some of the Northern states have a frost line that can reach as deep as 60 inches while parts of Florida have no frost line at all. The Midwest portion of the country has a frost line that goes between 30 and 40 inches on average. Currently, the frost line in the Chicago area is recorded at 40 inches, which means that the water in ...For our area, the typical date of the last frost is April 13-22, and for a hard freeze is April 5-10. I reported dates as a range because there are numerous weather data stations around central Illinois. Each station has a slightly different median date of the last freeze, since each location has slightly different conditions, which is why the ...Chicago, IL – In the midst of a severe cold snap, residents throughout northern Illinois have been startled by mysterious booming sounds and vibrations, indicative of frost quakes, or cryoseisms. The natural phenomenon occurs when a rapid drop in temperature causes groundwater beneath the surface to freeze quickly, resulting in a sudden ... Frost line map illinois, The Frost/Thaw line refers to the current allowable weights in place for a specific location in the Province of Alberta. Depending on the time of year, different parts of the Province may be at different allowable weights. The Province of Alberta monitors the frost and thaw depth through a network of thermistors located at 68 different ..., October average temperatures ranged from the low 50s in northern Illinois to the low 60s in southern Illinois, between 1 and 2 degrees above normal in most places (Figure 2). Most of the state saw high temperatures in the upper 80s or low 90s in early October, including 94 in Quincy and 90 in Hoopeston. The brief taste of winter in the last few ..., Frost lines through the United States can vary broadly. For example, some of the Northern states have a frost line that can reach as deep as 60 inches while parts of Florida have no frost line at all. The Midwest portion of the country has a frost line that goes between 30 and 40 inches on average., Topographic Map of Illinois showing the location of major metropolitan areas: Chicagoland, Greater St. Louis, and the Quad Cities. The state's major rivers are the Ohio, the Mississippi, the Wabash, the Kaskaskia, and the Illinois rivers. In the flat landscape of Illinois, the highest point is the banana-shaped Charles Mound at 376 m (1,235 ft, Exterior foundations must extend below the frost line and a minimum of 12 inches (305 mm) below undisturbed soil. Foundations supported on rock or that are frost-protected in accordance with Section R403.3 are exempt from the extension below the frost line, but the 12-inch (305 mm) minimum still applies. ASCE 32 contains requirements for:, We would like to show you a description here but the site won't allow us., Are you looking for the best things to do in Joliet, California? Hee's what you need to know and enjoy on your visit. By: Author Kyle Kroeger Posted on Last updated: February 21, 2..., Title: 2023-2024 Winter Weather Fact Sheet - Statewide Author: Illinois Department of Transportation Created Date: 11/13/2023 3:40:02 PM, R403.1.4.1 Frost protection. Except where otherwise protected from frost, foundation walls, piers and other permanent supports of buildings and structures shall be protected from frost by one or more of the following methods: 1. Extended below the frost line specified in Table R301.2.(1); 2. Constructing in accordance with Section R403.3; 3., For example, looking at the Air-Freezing Index map, you will notice that most of the Front Range of Colorado, all of Nebraska, Illinois, and even northern Michigan lie in the 1,000–2,000 or warmer. By cross-referencing ICC Table R403.3(1), you will find that you will need a minimum R-value of 5.6 for the vertical insulation to build at that ..., Alabama - 6 inches. Georgia - 5 inches. California - 5 inches. South Carolina - 4 inches. Louisiana - 4 inches. Hawaii - 0 inches. Florida - 0 inches. Along with these frost lines, it's also worth checking if any permits required for your deck from the state or Homeowners Association stipulate how deep your footings must be placed., Cemetery Association for 16 consecutive winters (1980-96). Maps of average and extreme depths are presented. Ground frost is generally found in northern Illinois by late November, continuing until mid-March or early April In southern Illinois, a continuous frost season exists in all but the southernmost counties. In mild winters, ground frost is, The frost line in Illinois is 40 inches, so the water in the soil has not been known to freeze deeper than that point. In Chicago, building codes require that concrete supports be poured at a depth of at least 3 feet 6 inches. The frost line marks how deeply below the surface that ground water typically freezes. ... This frost line map provides ..., OPER 753 Maximum Legal Dimensions & Weights on state, federal, and local routes. Legal Weight Structures on marked or unmarked state maintained routes. Interactive Designated Truck Routes map on Getting Around Illinois - Additional maps are available under Trucking Resources. Understanding the Illinois Size and Weight Laws., Coal Mine Viewer. The Coal Mines in Illinois Viewer illustrates a general depiction of underground mining in the state and will help determine the proximity of coal mines and underground industrial mines to your home or business. Please follow the instructions below the map for using this viewer. Questions about ILMines?, When excavating your deck footings, you'll need to dig below the frost line. Find out how deep the frost line is in your area with our frost depth map at Decks.com. , 41.7. 41.38″. 23.2″. The average date of the last spring frost is April 15. The average date of the first fall frost is October 17. The record high is 109 on July 14, 1954. The record low is -25 on four (!) occasions: 9 Feb 1899, 13 Feb 1905, 19 Jan 1994, and 5 Jan 1999. The maximum seasonal snowfall was 67.2 inches in the winter of 1977-78., 2. Area of 600 square feet (56 m 2) or less for light-frame construction or 400 square feet (37 m 2) or less for other than light-frame construction. 3. Eave height of 10 feet (3048 mm) or less. Shallow foundations shall not bear on frozen soil unless such frozen condition is of a permanent character., When you look at your paycheck, you likely see less than you expected, especially if your wages are already low. That's because taxes are taken out of your earnings. This is for So..., The depth of the groundwater in the soil that is expected to freeze is called the frost line. Frost line, also known as frost depth is determined to know how deep the frost can penetrate the ground. According to the Federal Highway Administration, the maximum depth of the frost line ranges from 0 to 8 feet in the contiguous United States., How to read these charts for the fall. As your growing season comes to an end, the nightly temperatures for Peoria, Illinois start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 28, and by October 24 you're almost certain to have received at least ..., Protecting Foundations from Frost. Code expert Glenn Mathewson describes code-accepted alternatives to digging below the frost line, with a focus on frost-protected shallow foundations. By Glenn Mathewson Issue 297 - Feb/Mar 2021. FROST-LINE SHIFT: Digging below frost depth isn't the only way to protect foundations from frost heave., Frost Depth Map Note: Some local jurisdictions may require the footing(s) to be at a greater depth than what is required by the PSC. Frost Depth Map North of Hwy. 36 = 25” Between I-70 and Hwy. 36 = 20” Between I-44 and I-70 = 15” South of I-44 = 12”, Here are the most common reasons for why you need to know. In cold-weather climates, your sewer line will freeze and break if your trench was not deep enough for the pipe to be below the frost line (frost depth). In areas where natural events routinely cause damage (tornados, hurricanes, typhoons), wind and water can uproot trees, causing sewer ..., 2023 State Freight Plan: The Illinois 2023 State Freight Plan was developed in accordance with federal guidelines for state freight plans as outlined in the Infrastructure Investment and Jobs Act (IIJA). Illinois is a vibrant and thriving hub for freight, with 147,000 miles of roadway, over 10,000 miles of railroad tracks, 1,118 miles of ..., Back To Map Louisiana Extreme Frost Line Penetration (in inches) State Average Frost Depth: 4″ Source: U.S. Department of Commerce, Map and List of Record High and Low Temperatures (Fahrenheit) in Illinois United States, A frost line depth chart is a map or graphical representation that indicates the depth at which water in the ground freezes, or the depth to which ice or frost penetrates the soil ..., The public schools are organized into 1,063 public school districts . This section of the Illinois HomeTownLocator Gazetteer provides basic information for Illinois schools including name, address, phone number, school district contact information plus maps of school locations, attendance zones or boundary maps where availiable., 41.7. 41.38″. 23.2″. The average date of the last spring frost is April 15. The average date of the first fall frost is October 17. The record high is 109 on July 14, 1954. The record low is -25 on four (!) occasions: 9 Feb 1899, 13 Feb 1905, 19 Jan 1994, and 5 Jan 1999. The maximum seasonal snowfall was 67.2 inches in the winter of 1977-78., The deepest observed frost depths during this period ranged from 5 inches in far southern Illinois to 30 inches in far northern Illinois. The results were published in the Transactions of the Illinois State Academy …, Jun. 1 - Jun. 10. Zone 16. Jun. 11 - Jun. 20. Zone 17. Jun. 21 - Jun. 30. Plantmaps has derived zones indicating the average annual Last frost dates for United Kingdom., Service alerts. Current alerts 2. All Train Routes. Sun, Apr 7 2024 to TBD New Schedules in Effect. Special Note. Updated schedules are in effect for all 'L' lines. Visit transitchicago.com for schedules. Blue Line. Mon, Feb 19 2024 to TBD Harlem (O'Hare branch) Station's West Entrance Temporary Closure.