Temperature is forecast for all wind levels that are 2,500 feet or more above the station. If the wind speed is forecast to be 200 kt. A developing storm complex may produce severe storms and locally heavy rain in the Southeast, a wintry mix and gusty winds to the Great Lakes, and locally heavy rain in the Mid-Atlantic and New England. x- [ 0}y)7ta>jT7@t`q2&6ZL?_yxg)zLU*uSkSeO4?c. R
-25 S>Vd`rn~Y&+`;A4 A9 =-tl`;~p Gp| [`L` "AYA+Cb(R, *T2B- The wind is from 230 true (73 50 = 23) at 119 kt. 0000006625 00000 n
For example, Monte Gordo in Portugal. Dependent upon station elevation, wind forecasts are issued for the following levels: 3, 6, 9, 12, 18, 24, 30, 34, and 39 thousand foot levels. 0000002273 00000 n
Temperatures are always negative above 24,000 feet (MSL). or . Terminal aerodrome forecasts (TAFs) are issued four times a day and give forecasts 24 hours into the future, as do winds and temperature aloft forecasts, forecast icing potential (FIP) guidance, and surface-to-Flight Level 240 prog charts. : LZHK0i\Y\[_T_X 6X(8(u,c`Y"X,`tlp OH It can get a little tricky understanding how to interpret the textual forecast. 3. 24,000 feet (MSL). Air Quality Fair. No temperature is forecast for the 3,000 foot level. The weather forecast, all info about spots and content of the articles is provided for personal non-commercial use. 1. Temperatures Aloft Check the Weather. Please do not use these aviation weather forecasts for navigational purposes but aviation flight planning only. add 100 to the wind group. In the Windy.app you can find the wind forecast for different heights in a special Air weather profile. Click on a location to view current TAFs and METARs . Just the other day I was on a commercial airline flight on my way home from vacation. The questions are similar in nature to what may appear on your Private Pilot Knowledge Exam. Codes reported as 9900 are light & variable. There could be a cloud layer between FB forecast levels but an FB user would not be aware of it. the month at 1200 Zulu for use 0900 to 1500 Zulu. a. Wind and temperature data are included for altitudes of 3, 6, 9, 12, 18, 24, 30, 34, and 39 thousand feet. Understanding what the winds are doing aloft will allow you to estimate several different factors, including your time en-route, approximate time of arrival, fuel burn, and compass headings. September 13, 2022 Allison Allen Date Director Analyze, Forecast, and Support Office NATIONAL WEATHER SERVICE INSTRUCTION 10-812 SEPTEMBER 27, 2022 Operations and Services Aviation Weather Service, NWSPD 10-8 Global Winds Aloft. aloft reports are used to calculate
199 knots. Page loaded: 09:44 UTC | 02:44 AM Pacific | 03:44 AM Mountain | 04:44 AM Central | 05:44 AM Eastern. To read the winds aloft chart, first, locate the time period you want to look at on the chart. Hb``c``^ (- "PxC@I!!_p&t!!1H3@ s
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If you continue to browse this site, you are agreeing to our, Read Mini guide to paragliding with Windy.app, Watch the Windy.app's first webinar on better weather forecasting, Up to 8 times more frequent forecasts for three weather models at once. +Rh7>_;3cxT?TDS&
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?! AVIATION WEATHER CENTER . The wind forecast at altitudes is generally not different from the standard forecast at 10 meters (33 feet) in terms of what it contains and what it looks like. What does this tell us about the real winds? Now available. 3qf4 }M;
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Kqk]xn*UJ|;S9B6wW.+ jh U.S. Only These images are updated four times a day following the model runs at 00, 06, 12 or 18 UTC. The wind is from 230 true (73 50 = 23) at 119 kt. 2023 Copyright Windy Weather World Inc. Here you can also create your own weather profile in the Pro version of the app by adding additional elements to it. Switch the profile to Air through the icon on the right side of the list of weather models. National Weather Service Strongest updrafts and heaviest precipitation in eyewall. Data from NOAA forecast models. Simple: at ground level, there are many obstacles to the wind, including trees, buildings, and other things that prevent making the most accurate measurement. You will either see a + or displayed with the temperature to indicate positive or negative, above 24,000 feet no + or sign is noted as all temperatures will be negative. (Refer to Figure 17.) Sorry, the location you searched for was not found. . Dry and gusty winds will create critical fire weather threats in the north and central Plains. At some point in the future the products above will no longer be available. Prior to departure, the captain came on the overhead to advise the passengers that we would be arriving about 15 minutes late due to headwinds along the route. Hbd`ad`ddssqtsrM(f!CGjcnZ1BL1IE% Other remote sensing methods include lidar (light detection and ranging), which sends laser pulses into . The first two numbers 23 represent the direction of the wind in degree true, 230 (you will need to add on a 0). trailer
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Forecast is valid from 3:00 am to 10:00 am (EST), 29th day of this month. or more. So far pretty simple, but it can get a bit trickier. NWS "F$H:R!zFQd?r9\A&GrQhE]a4zBgE#H *B=0HIpp0MxJ$D1D, VKYdE"EI2EBGt4MzNr!YK ?%_&#(0J:EAiQ(()WT6U@P+!~mDe!hh/']B/?a0nhF!X8kc&5S6lIa2cKMA!E#dV(kel
}}Cq9 The story that forever changed aviation search and rescue. How do you read a wind and temperature aloft forecast? I already have one feeding the JPI 930. southwest at 35 knots. Lets try one more, 8242-15 decodes as 320 @ 142 knots and a temperature of negative 15. 4:56 AM. direction and
Text:Ivan Kuznetsov, an outdoor journalist, editor and writer from the Dolomites, Italy, and Karelia, Finland, with 10 years of professional experience. endstream
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Issuance & Validity: Wind and Temperature Aloft Forecast (FB) Periods; Winds and Temperatures Aloft Forecast Header; FBs are produced by the NWS National Centers for Environmental Prediction (NCEP); Issued 4 times daily, valid for the time stated on the chart [Figure 2] If the scheduled forecast is delayed, the existing valid forecast based on the earlier 6-hourly data can be used until a new . FAA's Aviation Weather Services : AC 00-45E Field Value; Last Updated: June 20, 2017, 17:06: Created: June 20, 2017, 17:06: access_constraints . Chapter 7. Please report any errors you might find, here's how. The forecast is issued four times a day and includes data that is valid for 6, 12, and 24 hours. Above 7,315 m (24,000 ft) the +/- signs for temperature are not used because the temperature at higher altitudes is below zero Celsius (32 F). A station is forecasting wind and temperature aloft at FL 390 to be 300 at 200 knots, temperature is -54 C. How would this data be encoded in the FD? than 360, subtract a 5 from the first number to determine wind
Read Mini guide to paragliding with Windy.app. What wind is forecast for STL at 12,000 feet? We strives to maintain current and accurate data. The last two figures are the air temperature in degrees Celsius, i.e. I know 9900 means light and variable winds less than 5kts but how do I determine the ave. There are several formulas for this. . So the G5 has some cool new capabilities with TAS and winds, however, it seems you need a gad13 computer, and a temp probe. Winds
Anyone who has ever climbed a mountain knows themselves that air temperature drops as the altitude increases, and so does pressure. MOS forecasts surface wind, visibility, clouds, weather conditions, temperature, and dewpoint, with forecast periods up to 3 days in advance. *Air Pressure drops more rapidly with altitude in a column of cold dense air than in warm less dense air. V)gB0iW8#8w8_QQj@&A)/g>'K t;\
$FZUn(4T%)0C&Zi8bxEB;PAom?W= Lets try one more, 8242-15 decodes as 320 @ 142 knots and a temperature of negative 15. Pilots weaned away from the FB to the Skew-T report that they feel much more comfortable using it to determine wind direction and velocity without interpolation, cloud bases and tops, etc. 0000006336 00000 n
w+:e'0~OVt]Z#?:LdB1 //OKg/GQMjNWOJ]8tB{$.%u ")e>_ ykFAR[}m~$:zi:#6u0_vW~WD;fr0 0000006042 00000 n
The minus signs are deleted preceding the temperatures at the 30, 34, 39, 45, and 53 thousand foot . This website uses cookies to improve your experience. Temperature influences air pressure. Please Contact Us. Please Contact Us. A forecast at altitude is necessary for all those who are engaged in air sports because data on the wind on the ground is of little use to them. There are two main elements to a winds and temperatures aloft forecast: "FD" indicates a Winds and Temperatures Aloft, "FD1US1" is a standard line regardless of reported region, Data is collected at the date time group (DTG) listed, "TEMPS NEG ABOVE 24000" is a standard line, Since temperatures above 24,000' are always negative, the minus sign is omitted, Issued for a variety of altitudes based on location [, "FT" indicates the levels of the wind and temperatures data, A four-digit group shows wind direction in tens of degrees, the second two are wind speed in knots, Altitudes up to 15,000' the levels are true altitude (references to MSL), Altitudes at or above 18,000' the levels are pressure altitudes (references to FL). The 930 and my garmin 430w are connected and exchange. Winds/Temps Data. Before we go to the next part, it is also important to note that the other two basic weather elements in the general weather forecast, air temperature and atmospheric pressure, are also measured at about sea level. To decode, you must subtract 50 from the wind direction and add 100 to the wind speed. Therefore, wind instruments are usually placed on the roofs of low buildings or weather stations located there. No temperature is forecast for the 3,000 foot level. headwinds to
Your email is never shared. 06 hr Temperature Forecast Chart for New York, NY. HWVFShzN.&=^{
jBo]3_w3|3ZpW,WnX--pBI\Hh5DE What wind is forecast for STL at 12,000 feet? The minus signs are deleted preceding the temperatures at the 30, 34, 39, 45, and 53 thousand foot levels. It is the same wind direction and speed. It can be different depending on the source of information. Trigger Temperature - The surface temperature required to make the first 4000 feet of the atmosphere dry adiabatic. Three sets of forecast charts valid at model run plus +3, +9 and +15 hours from the initial model time. endstream
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The initial images are valid at either 00 or 12 UTC and the forecast maps are valid +06 or +12 hours from those initial times. 1. 0000024973 00000 n
Next take 60 (wind speed) and add on 100 to get 160. Read the forecast in the table below the models. | Privacy Policy | Terms of Service | Sitemap | Patreon | Contact, NWS National Centers for Environmental Prediction (NCEP), Aviation Weather Services: FAA Advisory Circular 00-45H, Change 1&2 (FAA Handbooks series) [Amazon], Advisory Circular (00-45), Aviation Weather Services, Federal Aviation Administration (FAA-H-8083-28) Aviation Weather Handbook, Federal Aviation Administration - Pilot/Controller Glossary, Advisory Circular (00-45), Aviation Weather Services (7.4) Wind and Temperature Aloft Forecast (FB), National Weather Service (NWS) National Centers for Environmental Prediction (NCEP), Winds and Temperatures Aloft (FBs) are computer prepared forecasts for specific locations in the contiguous U.S. and a network of locations in Alaska and Hawaii based on the, "FDWinds," now "FBwinds," are produced in both a, Determining the most favorable altitude based on winds and direction of flight, Predicting turbulence by observing abrupt changes in wind direction and speed at different altitudes, Issued 4 times daily, valid for the time stated on the chart [, If the scheduled forecast is delayed, the existing valid forecast based on the earlier 6-hourly data can be used until a new forecast is transmitted, FB data is always forecasted, vice observed, Amendments are not issued to winds aloft forecasts. 0000007044 00000 n
National Oceanic and Atmospheric Administration. 0000011798 00000 n
N')].uJr Learn to Fly Blog ASA (Aviation Supplies & Academics, Inc.). It is our mission to be the go to leaders in the aviation industry. Send your comments regarding this website. Usually, the wind is measured at about 10 meters (33 feet), which is counted from the Mean Sea Level (MSL). Wind and temperature aloft forecasts (FB) are computer-prepared and issued by the National Centers for Environmental Prediction (NCEP) at Suitland, Maryland. Go to aviationweather.gov/windtemp. reported in degrees true north, temperature in Celsius. Why do meteorologists place anemometers at this height? n3kGz=[==B0FX'+tG,}/Hh8mW2p[AiAN#8$X?AKHI{!7. C230 true at 39 knots. After all, it is known that winds blow stronger at a higher altitude. Winds-Aloft; air_temperature; wind_from_direction; wind_shear; wind_speed; Additional Info. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. 0000001280 00000 n
Distribution by the WMSCR is accomplished in accordance with established program requirements. convection, PIREP, METAR, TAF, AIRMET, SIGMET, satellite, radar, surface, winds aloft, temperature, NEXRAD, precipitation, rain, snow, sleet, thunderstorm, enroute, and prognostic charts. Advisory circular 00-45 "Aviation Weather Services" documents the winds and temperature aloft (FB) product on page 7-39. Well, its easy to do the math: 111 m (364 ft) is 55 sofas and 1,949 m (6,394 ft) is 974 couches. These products are from the NAM atmospheric model at Flight Level (in 100s of feet). Then find the wind indicator for the desired height range. See National Weather Service Instruction 10-812, Aviation Wind and Temperature Aloft Forecasts. Describe hurricane anatomy (wind, pressure, and precipitation) Composed of an organized mass of thunderstorms. For example, in the Windy.app you can see the wind forecast at altitudes for the following values: How high is it? It is also useful for predicting wind speed. a. Elev. Winds
I encourage Learn to Fly Blog readers to check it out. These products are from the NAM atmospheric model at levels which are significant to the Aviation Community. It is also useful for predicting wind speed. Dry, gusty winds from these two system swill keep fire weather threats critical in the Southwest and Upper Midwest. Wind speed at different altitudes can also be calculated independently by knowing, in fact, the speed at 10 meters (33 feet) and the desired altitude. Our brand new newsletter provides information on the newest products from ASA, as well as updates to existing ASA products and textbooks, Federal Aviation Regulation updates, changes to the Practical Test Standards, updates to FAA Knowledge Exams, the latest posts from the Learn to Fly Blog, training tips, links to resources and social media outlets, and much moreall in one place! Balloon pilots are tested on their knowledge of the use of the Skew-T diagramwhy not train all pilots in its use? Like the captain did, it is an important part of your cross country flight planning to check the forecasted winds, known as the Winds and Temperatures Aloft Forecast (FB). 2y.-;!KZ ^i"L0-
@8(r;q7Ly&Qq4j|9 EXAMPLE: 7799 is decoded as 270 true at 199 kt. Loon's fleet of balloons, carrying communications technology that would allow mobile coverage in remote or disaster-affected areas, were designed to operate at a height of 19-25km (62,700-82,500ft . Winds and temperatures aloft are 6 hourly forecasts of wind speed, direction, From daily weather forecasts, severe storm warnings and climate monitoring to fisheries management, coastal restoration and supporting marine commerce, NOAAs products and Winds & Temperatures Aloft Forecast. So the wind and temperature were listed together. Get sea level pressure & surface wind speeds, as well as winds aloft data at various altitude levels for United States aviation weather forecasts. The symbolic form of the forecasts is DDff+TT in which: No winds are forecasted within 1,500' of station elevation, Winds are forecasted true, indicated in tens of degrees (two digits) with reference to true north and wind speed is given in knots (two digits), If forecast speed is less than 5 knots, the coded group is 9900 which means, "light and variable", If forecast speed is greater than 100 knots, 100 is subtracted from the wind speed and 50 is added to the wind direction, If the wind speed forecast to be 200 knots or greater, the wind group is coded as 99 knots, No temperatures are forecasted within 2,500' AGL of station elevation, No temperatures are forecasted in the 3,000' column, A six-digit group includes forecast temperatures in degrees Celsius, Winds and temperatures aloft have log validity times for conditions which can fluctuate often, Consider cross-checking wind readings with the, Winds and temperatures are not forecasted within 1500 and 2500 feet respectively, meaning these blocks will appear blank for some stations in mountainous areas. All FBs are transmitted to the WMSCR by NCEP. variable. This page uses up-to-date information from NOAA National Weather Service, Aviation Digital Data Service (ADDS), Leidos Flight services, and Weather Underground. Also, no temperatures are forecasted for any level within 2,500 feet of station elevation. Take the first two numbers 77 (our wind direction) and subtract 50 to get 27. The AAWU is transitioning to new Winds Aloft Images that provide more detail. 3. In the wind forecast that you see in your weather app, there is one small and important detail that not everyone knows about: it is the wind at 10 meters (33 feet) high. The first two digits are the wind direction: 310 degrees true north. variable. b. To convert wind directions reported greater than 360, subtract a 5 from the first number to determine wind direction and add 100 to the wind group. Wind Gusts 6 mph. The second two digits are wind speed: 27 knots (aviation and sailing traditionally use knots to measure speed, as they are more convenient). Enter four character ICAO code. We use cookies to help you get the best experience when using our website. Example: 7508 = 250 at 108 knots. Since in-flight icing is most likely to occur between +2C and -20C, you will generally want to know at which altitudes you will . With ForeFlight's Global Winds Engine, view winds aloft forecasts for any point on the planet up to 54,000 ft. . All NOAA, A nearly-stationary low in the Northwest will continue bringing wet, heavy snow to parts of the Upper Great Lakes and locally heavy rain that could cause flash flooding to interior Maine. However, GlobalAir.com cannot guarantee the data received from these government sources is accurate or complete. GlobalAir.com is your partner in connecting you with relevant information and resources.
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V:I""8!_Ki7DvU#{Zy4W2-{Lf cfJxOatOho4 ;j.~gCEV6S!P@b knIE,2X4$xAj$`Db2z_HG+e"4 WINDS AND TEMPS ALOFT . Questions? US Dept of Commerce To activate the profile and get the forecast, do the following: 1. determine time to destination. Link to this tab directly: https: . Learn More About MOS . Table 7-11 lists the standard forecast periods for these products. Winds aloft report issued on the 14th
HTPn0tP,/)xu]hG@L Hjri0B2~dp Next, the 21 represents the wind speed, in this case 21 knots. 0000003964 00000 n
day of
Enter Zipcode or City, State. From this table you can see that the 6-hour forecasts are usable from the time they are issued until 3 hours after the valid time. Codes reported as 9900 are light &
Current Weather. The actual difference is that the forecast indicates the altitude. 4. This is due to the altitude at which the station is located. By continuing to use this website, you are agreeing to our Cookie Policy. What wind is forecast for STL at 9,000 feet? Now if you take another look at our example forecast below you will notice that no information is given for AMA at 3,000 feet MSL. Once you have your ta. Except for the fact that it is the basis for knowledge test questions, the FB is a waste of time: Too few reporting stations, too infrequent soundings, interpolation required, etc. Try your hand at the three sample questions below, you can use figure 17 included here to answer each questions. Something else to take note of is anytime winds are light and variable or less than 5 knots it will be express as 9900. GlobalAir.com receives its data from NOAA, NWS, FAA and NACO, and Weather Underground. Windy.app is a professional weather app, created for water and wind sports and all outdoor activities. TBL 8-3-1Wind/Temperature Aloft Forecast Schedules. -1 hr. Questions? The winds/temperatures aloft table presents forecast temperatures that you can use to help generate your icing exit strategy. Using the forecast from below lets look at DEN (Denver) at 9,000 feet MSL, 2321-04. A230 true at 56 knots. Yes, northwest winds are common at mid latitudes in North America. A slow moving weather system will slide south along the West Coast with rain and mountain snow. As a result, you should not rely solely on the data available on this site in planning any flight. If you are a user of the images above, please check out our new images below and send any comments, questions or concerns to the web authorsvia the link at the bottom of the page. At about 2,000 meters, trees and other vegetation stop growing and only rocks remain. Please consider this product experimental until further verified! NOTE: While we're experimenting with these new charts, please check the valid times to be sure they are current. NCEP Winds Aloft Forecasts for Alaska - Model based upper level winds produced by NCEP in a text format. Forecasters generate the aviation Winds and Temperatures Aloft Forecast using models made with the help of balloon radiosonde data. The wind direction and velocity on the Observed Winds Aloft Chart (arrow A) is indicated from the. In the case of the map, you can also select absolutely any point and get the forecast for it. But they could be measured at different altitudes, too. Continue searching. The vertical wind shear depends on the horizontal temperature gradient. USWX was developed to support the encoding aviation products in XML. Winds/Temps Page. or greater, the wind group is coded at 199 kt. Forecast winds aloft will be provided using degrees of the compass. Wind forecasts are not issued for altitudes within 1,500 of the locations elevation and temperatures within 2,500 feet. You can buy an aircraft from one of them. 1O?7w}^6wxSV%d[r4@VPc '5GW
+jzaL`m2IKd5d5PV.w22:XgyyVLM2*b;LL
1'[4/J(2| read more, [{"type": "creation", "value": "2011-11-11"}], urn:fdc:aviationweather.gov:Dataset:Winds-Aloft:Metadata, ["Disclaimer - While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. Please . 3. The profile also has the altitude pressure forecast we mentioned above. 0000005972 00000 n
44 F. RealFeel 45. "], [{"name": "", "roles": ["pointOfContact"]}], {"type": "Polygon", "coordinates": [[[167.375, 16.281], [-45.383, 16.281], [-45.383, 75.705], [167.375, 75.705], [167.375, 16.281]]]}. b. wind is from 280 degrees at 26 knots and the temperature is negative 14 degrees Celsius. They carry small instrument packages that transmit altitude, temperature, humidity, pressure, and GPS-derived wind information as they ascend. The winds blow from the west aloft. 0000001107 00000 n
37F 22F. Winds and temperatures aloft are 6 hourly forecasts of wind speed, direction, and temperature at several altitudes. First, its important to understand that the winds are given in degrees true and that winds are specified in knots. However, there is no consensus about which one is better. B230 magnetic at 25 knots. Or another example: this altitude is also a good altitude for any real rocky mountain. Extending outward from the eyewall with alternating rain band (updrafts) and rain . For example, suppose you want to see the winds aloft for the past 24 hours. I think you are wondering how much is 10 meters (33 feet)? Next take 60 (wind speed) and add on 100 to get 160. 0000005123 00000 n
There are three main reasons for this: So the winds aloft forecast is a special forecast that differs from the standard one and can only be obtained from specialized meteorological services. 0000006814 00000 n
850 mb 700 mb 500 mb 300 mb 200 mb; Forecast Winds Aloft (+06 hour) 6,000 ft 9,000 ft 12,000 ft 18,000 ft 24,000 ft 30,000 ft; Forecast Winds Aloft (+12 hour) 6,000 ft 9,000 ft 12,000 ft 18,000 ft 24,000 ft 30,000 ft; NCEP Winds Aloft Forecasts for Alaska - Model based upper level winds produced by NCEP . Winds aloft forecast for Monte Gordo in Portugal in the Windy.app for iOS. Temperature information will be provided on request. In this short article, we will understand what the winds aloft forecast is and how to read it. Click here to read the most recent issue and to subscribe to ENROUTE. Required fields are marked *. By selecting one of over 160 continental cities in the U.S.A. or one of 30 cities in Alaska, you can obtain wind direction, speed, and temperature forecasts. (100 + 19 = 119), and the temperature is 60C. 0000000930 00000 n
First, find the time period (in this case, the last 24 hours) on the top line of the chart. Anchorage Center Weather Service Unit 700 North Boniface ParkwayAnchorage, AK 995061-907-338-1010Comments? Wind and Temperature Aloft Forecasts," dated October 25, 2016. ACD{YO9LFI"A@8zhoAr4GsF,Fepm>m "+\zowb^|K]Y?x3+\-Mc6yv^%=#y{1Yh1`[7,(8$8\L9#{ Additional models runs can be found here. Initial Geopotential Heights and Winds. Temperatures
The good news is that this kind of wind forecast can also be obtained. See TBL 8-3-1 for wind/temperature aloft forecast schedules. Sample winds and temperatures aloft text table data. -Warm air aloft tends to exhibit a higher pressure than cold air at the same altitude (rate at which pressure decreases with increase in altitude is greater near Earth's surface than aloft. ,G@i Z@dXClHc]uXUnNaExzN0Xc%PYuk5TVj?Na[me|?R!!H )!PU|(^5cepeL58p:RnQeJ]RbPC:h+=qB6z
*qfHf8%Q=52Rrp.=KNd$~n. Winds aloft. Dataset:Winds-Aloft:Metadata: licence ["Disclaimer - While every effort has been made to ensure that these data are accurate and reliable within the . A code indicating 7760-20 would decode as 270 degrees true at 160 knots and a temperature of negative 20 degree Celsius. 0000000827 00000 n
1312+05 means the wind direction is from 130 (i.e., - southeast), the wind speed is 12 knots, and the temperature is 5C. nQt}MA0alSx k&^>0|>_',G! Temp: Wind Chill: 3000: No Data: No Data No Data No Data 6000: Calm: Calm No Data No Data 9000: 260: 11 mph: 53 F: 49 F: 12000: 290: 17 mph: 37 F: 27 F: 18000: 300: 24 mph: 6 F-15 F: 24000: 290: 29 mph-14 F B230 magnetic at 56 knots. National Oceanic and Atmospheric Administration 2. endstream
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>>
endobj
25 0 obj
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>>
endobj
26 0 obj
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>>
endobj
27 0 obj
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>>
endobj
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>>
endobj
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<< /Filter /FlateDecode /Length 203 /Subtype /Type1C >>
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